1. Technical Overview

Castor Oil Fatty Acid (COFA) is the mixture of fatty acids obtained from the hydrolysis (splitting) of refined castor oil. Unlike the parent triglyceride, COFA exists as a free fatty acid, which significantly increases its chemical reactivity. It is characterized by its exceptionally high content of Ricinoleic acid (approx. 90%), which provides a unique trifunctional structure: a carboxyl group, a double bond, and a secondary hydroxyl group. In industrial R&D, COFA is a vital liquid intermediate used for the synthesis of high-performance alkyd resins, transparent soaps, and specialized surfactants where the presence of the glycerin backbone is not required.

2. Chemical Structure & Composition

COFA is primarily composed of 12-hydroxy-9-octadecenoic acid.

• Ricinoleic Acid: ~88–90%.

• Linoleic & Oleic Acid: ~7–9%.

• Saturated Acids (Stearic/Palmitic): ~1–2%.

• Functional Profile: The secondary hydroxyl group on the C12 position remains the defining feature, providing polarity and sites for cross-linking.

The high concentration of a single hydroxy-fatty acid makes COFA far more predictable in chemical reactors compared to mixed fatty acids from other vegetable sources.

3. Physical & Chemical Properties

• Appearance: Yellow to amber viscous liquid at room temperature.

• Viscosity: Higher than standard fatty acids due to intermolecular hydrogen bonding.

• Acid Value: 175 – 185 mg KOH/g.

• Iodine Value: 82 – 92.

• Saponification Value: 180 – 190.

• Titer (Solidification Point): 3°C to 6°C, ensuring it remains liquid in most industrial climates.

4. Reaction Chemistry

COFA’s trifunctionality allows for complex chemical engineering:

1. Esterification: Reacts with polyols (like pentaerythritol) to create flexible, non-yellowing alkyd resins.

2. Saponification: Reacts with lithium or sodium hydroxides to form high-solubility soaps and grease thickeners.

3. Ethoxylation: The hydroxyl group can be reacted with ethylene oxide to create non-ionic emulsifiers.

4. Condensation: Can be self-polymerized to form estolides, used as high-performance lubricant additives.

5. When to Use vs. When NOT to Use

Use COFA when:

• Manufacturing high-solids alkyd resins where glycerin must be avoided to control viscosity.

• Formulating liquid soaps or textile auxiliaries requiring high wetting power.

• Producing metallic ricinoleates for the rubber or plastics industry.

Do NOT use COFA when:

• A solid, saturated wax is required (use 12-HSA instead).

• The application requires a non-polar fatty acid (standard Stearic or Oleic acid would be more compatible with mineral oils).

• High-temperature oxidative stability in an open system is the only requirement (unsaturated bonds may oxidize).

6. Compatibility Profile

COFA exhibits excellent compatibility with:

• Solvents: Completely soluble in alcohols, ketones, and aromatic hydrocarbons.

• Resins: Highly compatible with epoxy, phenolic, and amino resins.

• Polymers: Acts as a secondary plasticizer for nitrocellulose and some rubbers.

7. Manufacturing Process (Product Focus)

The production of COFA at Nova Industries involves:

1. Splitting: Refined castor oil is subjected to high-pressure steam hydrolysis (Colgate-Emery process) to break the triglyceride into fatty acids and glycerin.

2. Separation: The fatty acid layer is separated from the “sweet water” (glycerin phase).

3. Washing: The crude acid is washed to remove trace mineral acids and residual glycerin.

4. Vacuum Drying: De-moisturization under vacuum ensures a moisture content below 0.5%, preventing premature oxidation.

8. Technical Specifications Table

Parameter	Specification (Standard Grade)
Appearance	Yellowish Amber Viscous Liquid
Acid Value (mg KOH/g)	175 – 185
Iodine Value (Wijs)	82 – 92
Saponification Value	180 – 190
Hydroxyl Value	150 – 165
Moisture & Volatiles	0.5% Max
Color (Gardner)	6.0 Max

9. Quality Grade Analysis

Nova Industries monitors the Degree of Splitting via the Acid Value. A low acid value indicates residual monoglycerides, which can cause cloudiness and inconsistent reaction times in resin manufacturing. Our high-conversion process ensures a nearly pure fatty acid profile with minimal unsaponifiables.

10. Impact of Impurities

• Residual Glycerin: Can cause smoke and unwanted charring during high-temperature resin cooking.

• Moisture: Promotes the development of dark oxidation products and can interfere with the stoichiometry of polyurethane reactions.

11. Industry-Wise Application 1: Alkyd Resins & Coatings

COFA is a premium choice for manufacturing “medium-oil” and “long-oil” alkyd resins. It provides the final coating with exceptional flexibility, adhesion, and “non-yellowing” characteristics, making it ideal for high-quality decorative paints and industrial finishes.

12. Industry-Wise Application 2: Textile & Leather Auxiliaries

Used to produce sulfonated and ethoxylated derivatives that act as powerful wetting agents, emulsifiers, and leveling agents in fabric dyeing and leather fat-liquoring.

13. Industry-Wise Application 3: Metallic Soaps

COFA is reacted with zinc, calcium, or aluminum to produce metallic ricinoleates. These are used as lubricants and stabilizers in the rubber and PVC industries.

14. Industry-Wise Application 4: Personal Care

Used in the manufacture of transparent bar soaps and specialized shampoos. The ricinoleic content provides a unique creamy lather and acts as a mild antimicrobial agent.

15. Formulation Guide

• Resin Cooking: COFA reacts faster than castor oil because it doesn’t require the initial heat to break the triglyceride bond. Monitor the exothermic peak carefully.

• Soap Making: Account for the high acid value when calculating the caustic soda (NaOH) requirements to ensure a neutral finished product.

16. Sustainability Data

COFA is a 100% bio-based, renewable fatty acid. It is fully biodegradable and offers a lower carbon footprint compared to synthetic fatty acids derived from petroleum paraffin.

17. Packaging & Logistics (Technical)

• Standard: 190kg/200kg HDPE or MS Drums.

• Bulk: ISO Tanks or 1000kg IBC Tanks.

• Logistics: Non-hazardous. However, because it is a liquid fatty acid, it can be corrosive to mild steel over long periods; epoxy-lined or HDPE containers are preferred.

18. Storage Science

Should be stored in a cool, dry place. COFA is sensitive to air exposure; once a drum is opened, it should be used promptly or blanketed with nitrogen. For bulk storage, 316-grade stainless steel tanks are mandatory to prevent iron contamination, which would turn the acid dark red.

19. Troubleshooting Guide

• Problem: Darkening of the resin batch. Solution: Check for iron contamination in the COFA or ensure the nitrogen flow in the reactor is sufficient.

• Problem: Unexpected viscosity increase in storage. Solution: This may indicate oxidative polymerization; ensure the drums are kept airtight.

20. Regulatory Compliance

Our COFA is REACH Compliant, meets the requirements for various international safety inventories (TSCA, DSL, IECSC), and is produced under strict quality control.

21. Safety (SDS Summary)

• Handling: Use protective gloves and goggles; it is a mild skin and eye irritant.

• Fire: Flash point >200°C. Use CO2, dry chemical, or foam extinguishers.

• Environment: Biodegradable, but large spills should be contained to prevent oxygen depletion in water bodies.

22. Sample Validation Process

Test for Acid Value and Hydroxyl Value. For resin manufacturers, a “Color Stability Test” (heating a sample to 200°C for 1 hour) is recommended to ensure the acid doesn’t darken excessively during production.

23. Commercial Efficiency

Direct procurement from Nova Industries ensures a high-purity product with a consistent ricinoleic profile. This consistency allows manufacturers to standardize their production cycles and reduce the need for batch-to-batch formulation adjustments.

24. Technical FAQs

1. Is COFA different from Ricinoleic Acid? COFA is the total mixture of acids from castor oil (approx. 90% RA), whereas “Ricinoleic Acid” usually refers to the more highly purified or distilled grade.

2. Can I use it to make biodiesel? Yes, it is a high-quality feedstock, though its high viscosity requires specialized transesterification parameters.

3. Does it stay liquid in winter? Yes, with a titer of ~5°C, it remains a liquid in most indoor industrial environments.

25. Contact CTA

For Technical Data Sheets (TDS), customized fatty acid profiles, or to request a sample, please contact our technical sales team: export@novaind.in

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1. Technical Overview

Distilled Castor Oil Fatty Acid (DCOFA) is the high-purity fraction of fatty acids obtained from the hydrolysis and subsequent vacuum distillation of castor oil. While standard COFA contains various fatty acid chains and minor impurities from the splitting process, the “Distilled” grade is refined to isolate the ricinoleic acid content and remove heavy ends, unsaponifiables, and coloring agents. This results in a much lighter color and a more consistent reactivity profile. In industrial R&D, DCOFA is the premium choice for manufacturers of high-end, non-yellowing alkyd resins, transparent polyurethanes, and pharmaceutical-grade surfactants where color integrity and chemical precision are non-negotiable.

2. Chemical Structure & Composition

The molecular profile of DCOFA is dominated by high-purity 12-hydroxy-9-octadecenoic acid ($C_{18}H_{34}O_3$).

• Ricinoleic Acid Content: Typically 90%–94% after distillation.

• Saturated Fatty Acids: Reduced to minimum levels (<1.5%), ensuring superior low-temperature fluidity.

• Secondary Hydroxyl Group: The C12 hydroxyl remains fully intact and accessible for reaction.

• Molecular Weight: Approximately 298.46 g/mol.

The distillation process removes short-chain volatile acids and long-chain polymerized fractions, resulting in a narrow molecular weight distribution that is ideal for high-precision polymerization.

3. Physical & Chemical Properties

• Appearance: Water-white to very pale yellow viscous liquid.

• Color (Gardner): 1.0 – 2.0 Max (significantly lighter than standard COFA).

• Acid Value: 180 – 190 mg KOH/g.

• Iodine Value: 82 – 90.

• Hydroxyl Value: 155 – 165 mg KOH/g.

• Specific Gravity: 0.940 – 0.950 at 25°C.

• Refractive Index: 1.469 – 1.473 at 25°C.

4. Reaction Chemistry

Distillation enhances the predictability of chemical reactions:

1. Polyesterification: Reacts with polyols to create resins with a very low initial color, allowing for the formulation of brilliant white and clear-coat finishes.

2. Urethane Formation: The secondary hydroxyl groups provide controlled cross-linking with isocyanates, essential for high-clarity elastomers and adhesives.

3. Transesterification: Ideal for producing high-purity methyl or ethyl ricinoleates used as specialized bio-based solvents.

5. When to Use vs. When NOT to Use

Use DCOFA when:

• Producing high-end “Water-White” alkyd resins or coatings.

• Formulating cosmetic-grade surfactants or pharmaceutical intermediates.

• Requiring a fatty acid with minimal odor and maximum chemical stability for sensitive formulations.

Do NOT use DCOFA when:

• The application is for crude industrial soaps or dark-colored textile lubricants where the extra cost of distillation provides no benefit.

• The process involves high-heat exposure in an open system where a cheaper, non-distilled grade would perform similarly.

6. Compatibility Profile

DCOFA exhibits excellent compatibility with:

• Resins: Fully compatible with acrylics, epoxies, and saturated/unsaturated polyesters.

• Solvents: Soluble in alcohols, ketones, and most aliphatic and aromatic hydrocarbons.

• Additives: Compatible with common UV stabilizers and hindered amine light stabilizers (HALS).

7. Manufacturing Process (Product Focus)

Nova Industries utilizes a multi-stage distillation process:

1. High-Pressure Splitting: Refined castor oil is hydrolyzed into fatty acids and glycerin.

2. Fractional Distillation: The crude fatty acids are fed into a high-vacuum distillation column.

3. Heart Cut: Only the “heart cut” (the purest middle fraction) is collected, leaving behind the dark, pitch-like heavy ends and light-end impurities.

4. Cooling and Nitrogen Blanketing: The distilled acid is immediately cooled and stored under nitrogen to prevent color degradation.

8. Technical Specifications Table

Parameter	Specification (Distilled Grade)
Appearance	Pale Yellow to Colorless Clear Liquid
Acid Value (mg KOH/g)	180 – 190
Iodine Value (Wijs)	82 – 92
Saponification Value	185 – 195
Hydroxyl Value	155 – 165
Color (Gardner)	2.0 Max
Moisture Content	0.20% Max

9. Quality Grade Analysis

The hallmark of DCOFA is its Color Stability. While standard COFA may darken rapidly when heated, our Distilled grade is processed to remove the pro-oxidants that cause yellowing. This ensures that when the acid is cooked at 200°C+ during resin synthesis, the resulting polymer maintains a high APHA clarity.

10. Impact of Impurities

• Unsaponifiables: Minimized to <1.0%; high levels can cause “sweating” or migration in finished coatings.

• Low-Boiling Acids: Removed during distillation to eliminate the pungent odor often associated with crude fatty acids.

11. Industry-Wise Application 1: High-Performance Coatings

DCOFA is the preferred binder component for high-solids, non-yellowing industrial enamels. It provides excellent pigment wetting, gloss retention, and flexibility to the film, making it ideal for automotive refinishes and appliance coatings.

12. Industry-Wise Application 2: Polyurethane Systems

Used as a bio-polyol in the synthesis of specialized PU elastomers and adhesives. Its high purity ensures a uniform cross-linking density, which translates to better mechanical strength and chemical resistance in the final product.

13. Industry-Wise Application 3: Cosmetics & Pharmaceuticals

Acting as a high-purity intermediate, it is used to produce esters and amides for the personal care industry. Its low odor and light color make it suitable for use in high-end lotions, shampoos, and topical ointments.

14. Industry-Wise Application 4: Printing Inks

Used in the manufacture of high-speed lithographic and offset printing inks. DCOFA improves the flow and “set” of the ink while ensuring that the colors remain vibrant and true to their pigment source.

15. Formulation Guide

• Batch Consistency: Because the hydroxyl value is concentrated during distillation, chemists should re-validate their stoichiometric ratios when switching from standard COFA to DCOFA.

• Oxidation Protection: Always use a nitrogen blanket in the reactor kettle to leverage the full “low-color” potential of the distilled grade.

16. Sustainability Data

DCOFA is 100% bio-based and renewable. It facilitates the creation of “Green” high-performance materials that match or exceed the properties of petroleum-based synthetics, supporting a circular economy.

17. Packaging & Logistics (Technical)

• Standard: 190kg HDPE or Epoxy-lined MS Drums.

• Bulk: 1000kg IBC Tanks or ISO Tanks with nitrogen padding.

• Stability: Highly stable when kept under nitrogen; however, exposure to air will cause gradual yellowing.

18. Storage Science

Must be stored in a cool, dry area. For bulk storage, 316L stainless steel tanks are mandatory. Even 304-grade steel can lead to trace iron pickup over time, which will darken this sensitive, high-purity acid. Use desiccant breathers to prevent moisture ingress.

19. Troubleshooting Guide

• Problem: Final resin is darker than expected. Solution: Check the temperature of the DCOFA during storage or check for air leaks in the reactor.

• Problem: Haze in clear coatings. Solution: Verify the moisture content; distilled grades are very dry, but can absorb moisture quickly if left open.

20. Regulatory Compliance

Our DCOFA is REACH Compliant, meets the requirements for use in food-contact materials (subject to local limits), and is produced under ISO-aware quality management systems.

21. Safety (SDS Summary)

• Handling: Wear protective eyewear and gloves. Non-hazardous, but a mild irritant.

• Fire: High flash point (>200°C). Use dry chemical or foam.

• Spillage: Use absorbent earth. DCOFA is biodegradable but should not be allowed to enter the sewage system in bulk.

22. Sample Validation Process

Verify the Color (Gardner) and Hydroxyl Value. A “Heat Stability Test” (heating to 205°C for 2 hours under nitrogen) is the best way to confirm the distillation quality for resin manufacturers.

23. Commercial Efficiency

Using Nova Industries’ DCOFA allows manufacturers to eliminate the need for corrective bleaching agents in their formulations. The high purity leads to more predictable reaction times and a superior final product that commands a premium in the market.

24. Technical FAQs

1. What is the difference between COFA and DCOFA? DCOFA has undergone vacuum distillation to remove impurities and color, whereas COFA is the crude acid mixture.

2. Is it better for non-yellowing than DCO? Yes, because as a fatty acid, it allows for more precise resin architecture than the triglyceride oil.

3. What is the shelf life? 12 months in a sealed, nitrogen-blanketed container.

25. Contact CTA

For detailed TDS, APHA color specifications, or to request a sample of our Distilled Grade, please contact our technical team at: export@novaind.in

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1. Technical Overview

Castor-Based Polyamide Resins are high-molecular-weight polymers synthesized through the polycondensation of dimer fatty acids (derived from castor oil) with diamines. Unlike petroleum-derived polyamides, these resins leverage the unique 18-carbon architecture of the ricinoleic chain. In industrial R&D, they are classified into Alcohol-Soluble and Co-Solvent grades. These resins are the industry standard for high-speed flexographic and gravure printing inks due to their exceptional adhesion to non-porous substrates (like PE, PP, and BOPP), high gloss, and superior resistance to water and chemicals.

2. Chemical Structure & Composition

The molecular structure of these polyamides is characterized by a repeating amide ($–CONH–$) linkage along a long-chain aliphatic backbone.

• Dimer Acid Base: Provides flexibility and excellent wetting properties.

• Amine Functionality: Determines the resin’s solubility and reactivity (reactive vs. non-reactive grades).

• Bio-Content: Depending on the formulation, these resins can achieve up to 100% renewable carbon content.

The long hydrocarbon segments between the amide groups provide these resins with a unique “soft-segment” character, offering far better flexibility than rigid Nylon 6 or Nylon 6,6.

3. Physical & Chemical Properties

• Appearance: Pale yellow to amber transparent pellets or granules.

• Softening Point: 105°C to 125°C (Customizable for heat-seal applications).

• Acid Value: <5.0 mg KOH/g.

• Amine Value: <5.0 mg KOH/g (for non-reactive ink grades).

• Solubility: Excellent in Ethanol/Isopropanol (Alcohol-soluble) or Hydrocarbon/Alcohol blends (Co-solvent).

• Viscosity: 2.0 to 6.0 Poise at 25°C (in 40% solution).

4. Reaction Chemistry

The performance of Castor-Based Polyamides is driven by their intermolecular interactions:

1. Hydrogen Bonding: The amide groups form strong bonds with the surface of plastic films, providing unmatched adhesion.

2. Thermoplasticity: These resins melt and solidify predictably, making them ideal for high-speed heat-sealing in packaging.

3. Chemical Resistance: The fatty acid backbone provides a hydrophobic shield, making the cured resin resistant to fats, oils, and moisture.

5. When to Use vs. When NOT to Use

Use Castor-Based Polyamides when:

• Formulating flexographic and gravure inks for plastic film packaging (snacks, bread bags).

• Manufacturing high-performance hot-melt adhesives for the footwear or automotive industries.

• Producing “Overprint Varnishes” (OPV) that require high gloss and scuff resistance.

Do NOT use Castor-Based Polyamides when:

• The application requires high-clarity optical lenses (the resins are transparent but have a slight amber tint).

• The service temperature exceeds 150°C, as the resin may begin to soften or undergo oxidative darkening.

6. Compatibility Profile

• Nitrocellulose (NC): Excellent compatibility; often blended to improve the heat resistance and hardness of printing inks.

• Solvents: Highly compatible with Isopropyl Alcohol (IPA), n-Propanol, and Toluene.

• Plasticizers: Works synergistically with Dibutyl Sebacate (DBS) to increase film elongation.

7. Manufacturing Process (Product Focus)

Nova Industries utilizes a precision polymerization process:

1. Dimerization: Castor fatty acids are dimerized to create a $C_{36}$ dicarboxylic acid.

2. Polycondensation: The dimer acid is reacted with diamines (like EDA or HMDA) in a vacuum reactor.

3. Molecular Weight Control: The reaction is timed to reach a specific viscosity and softening point.

4. Pelletization: The molten resin is extruded through a die, water-cooled, and cut into uniform granules.

8. Technical Specifications Table

Parameter	Alcohol Soluble Grade	Co-Solvent Grade
Appearance	Yellowish Granules	Yellowish Granules
Softening Point	115°C – 125°C	105°C – 115°C
Viscosity (40% in IPA)	2.5 – 4.5 Poise	3.5 – 5.5 Poise
Color (Gardner)	7 Max	8 Max
Acid Value	5.0 Max	5.0 Max
Amine Value	5.0 Max	5.0 Max

9. Quality Grade Analysis

Nova Industries monitors Solubility Clarity and Gel Resistance. A high-quality polyamide must dissolve completely to form a crystal-clear solution. We ensure that our resins do not “gel” or thicken significantly during storage, which is a common failure point in lower-grade bio-polyamides.

10. Industry-Wise Application 1: Flexible Packaging

This is the primary application for castor-based polyamides. They act as the binder in inks for PE and PP films. Their ability to “bite” into the non-polar surface of plastic ensures that the printing does not peel or scratch off during the packaging process or in the consumer’s hands.

11. Industry-Wise Application 2: Hot-Melt Adhesives

Due to their low melt viscosity and high bond strength, these resins are used as adhesives in the assembly of filter elements, side-seam bonding in cans, and in the “lasting” process of shoe manufacturing.

12. Industry-Wise Application 3: Thixotropic Alkyds

Reactive grades of polyamide resin are used to modify alkyd resins, creating “Thixotropic Paints” that are creamy in the can but flow easily under a brush, significantly reducing drips and splatters for the DIY market.

13. Formulation Guide

• Ink Formulation: Typically 20–30% resin, 10–15% pigment, and 50–60% solvent.

• Dilution: Always add the solvent to the resin under high-speed agitation to prevent the formation of “clumps” that are difficult to dissolve later.

14. Sustainability Data

Castor-Based Polyamide Resins are a flagship “Green” product. By utilizing the waste or byproduct fatty acids of the castor industry, we provide a high-value engineering resin that reduces the packaging industry’s reliance on crude oil derivatives.

15. Packaging & Logistics (Technical)

• Standard: 25kg Multi-wall paper bags.

• Logistics: Non-hazardous. Protect from moisture and high-heat environments (to prevent granules from sticking together).

16. Storage Science

Must be stored in a cool, dry place. Polyamide resins are slightly hygroscopic and can absorb moisture, which may affect the drying time of the finished ink. Keep bags sealed until use.

17. Troubleshooting Guide

• Problem: Ink is not adhering to the film. Solution: Check the “Dyne level” of the film (Corona treatment) or increase the resin percentage in the ink formulation.

• Problem: Ink “scums” on the printing press. Solution: This may indicate poor resin solubility; ensure the alcohol-to-hydrocarbon solvent ratio is correct.

18. Regulatory Compliance

Our Polyamide Resins are REACH Compliant, TSCA listed, and meet the FDA requirements for indirect food contact in packaging materials (21 CFR 175.300).

19. Sample Validation Process

Verify the Softening Point and Viscosity. For ink manufacturers, a “Drawdown Test” on a target PE film followed by a “Tape Adhesion Test” is the most effective way to validate performance.

20. Contact CTA

For Technical Data Sheets (TDS), specific solubility profiles, or to request a sample for your next packaging ink project, please contact our technical export team: export@novaind.in

 

1. Technical Overview

Oxidized or Modified Castor Wax (often referred to as Polyamide-Modified Castor Wax) is a high-performance rheological additive engineered for modern, high-solids solvent-borne systems. While standard Hydrogenated Castor Oil (HCO) relies purely on hydrogen bonding between hydroxyl groups, Modified Castor Wax incorporates additional functional groups—such as amides or oxygenated structures—to enhance its efficiency. These modifications provide superior sag resistance, better thermal stability during processing, and a wider “activation window,” making it the ideal choice for heavy-duty industrial coatings, automotive underbody sealants, and marine paints where standard waxes might fail due to high processing temperatures.

2. Chemical Structure & Composition

The structure of Modified Castor Wax is more complex than simple HCO:

• Base Backbone: Fully hydrogenated castor oil (Tri-12-hydroxystearin).

• Chemical Modification: Often “polyamide-modified,” where the wax is reacted with diamines to create amide linkages.

• Oxidation: In the oxidized variant, controlled aeration introduces polar oxygen groups along the fatty acid chain.

The introduction of amide groups ($–CONH–$) creates much stronger intermolecular forces than the simple hydroxyl bonds found in standard castor wax. This results in a more robust and temperature-resistant thixotropic structure.

3. Physical & Chemical Properties

• Appearance: Off-white to pale yellow flakes or powder.

• Melting Point: 105°C to 125°C (Significantly higher than the 85°C of standard HCO).

• Acid Value: 5.0 – 15.0 mg KOH/g.

• Hydroxyl Value: 130 – 150 mg KOH/g.

• Active Content: 100% (Solids).

• Specific Gravity: ~0.98 at 25°C.

4. Reaction Chemistry (Thermostable Thixotropy)

The primary advantage of Modified Castor Wax is its Resistance to Seeding:

1. High-Temperature Activation: Unlike standard HCO which can “over-activate” and dissolve at 60°C, modified waxes maintain their fiber network at temperatures up to 75°C–80°C.

2. Fiber Formation: The amide groups facilitate the formation of long, needle-like crystals that interlock more effectively in polar solvents (like Xylene, Butanol, and Esters).

3. Shear Recovery: The modified network recovers its viscosity almost instantly after high-shear application (like airless spraying), preventing “sagging” on vertical surfaces.

5. When to Use vs. When NOT to Use

Use Modified Castor Wax when:

• Formulating High-Solids (Low VOC) coatings where standard rheology modifiers cause excessive viscosity increase.

• The manufacturing process involves high-speed grinding where temperatures exceed 60°C (preventing “seeding” or grit).

• Formulating Marine or Protective coatings that require thick film builds (300+ microns) in a single pass.

Do NOT use Modified Castor Wax when:

• Formulating low-cost decorative paints where standard FSG or HCO flakes are economically sufficient.

• The solvent system is purely aliphatic (like mineral spirits) with no polar content; modified waxes require at least a small percentage of polar solvent (e.g., Alcohols or Glycol Ethers) for activation.

6. Compatibility Profile

• Resins: Highly compatible with Epoxy, Polyurethane (PU), Chlorinated Rubber, and Short-oil Alkyds.

• Solvents: Optimized for aromatic hydrocarbons (Xylene/Toluene) and oxygenated solvents (MEK, MIBK, Butanol).

• Pigments: Excellent wetting properties for heavy pigments like Zinc Rich primers or Micaceous Iron Oxide (MIO).

7. Manufacturing Process (Product Focus)

Nova Industries utilizes a multi-stage synthesis for Modified Castor Wax:

1. Hydrogenation: Castor oil is fully hydrogenated to form HCO.

2. Modification/Amidation: The HCO is reacted with specific amines or subjected to controlled oxidation under high pressure and temperature.

3. Quenching: The molten modified wax is rapidly cooled to freeze the crystalline structure.

4. Finishing: The product is either flaked or micronized according to the specific application requirement.

8. Technical Specifications Table

Parameter	Modified Polyamide Grade	Oxidized Grade
Appearance	Pale Yellow Flakes/Powder	Amber Flakes
Melting Point	115°C – 125°C	100°C – 110°C
Acid Value	5.0 – 10.0	12.0 – 20.0
Amine Value	2.0 – 5.0	N/A
Specific Gravity	0.98	0.99
Hydroxyl Value	130 – 150	140 – 160

9. Quality Grade Analysis

The critical differentiator for Nova Industries’ Modified Wax is the Narrow Activation Range. We ensure that the modification is uniform across batches, preventing the common industry problem of “Variable Sag Resistance” where one batch of paint performs well and the next “runs” off the wall.

10. Industry-Wise Application: Automotive & Sealants

Modified Castor Wax is the cornerstone of Automotive Underbody Sealants (PVC Plastisols). It allows the sealant to stay in place even when the car body moves through high-temperature curing ovens. It provides the “Tack” and “Thixotropy” needed for robotic spray applications.

11. Industry-Wise Application: Protective & Marine Coatings

In heavy-duty anti-corrosive coatings (like those used on ships or bridges), this wax allows for the application of high-thickness layers without dripping. It also prevents the “Hard Cake” settlement of heavy zinc dust during long-term storage in 20-liter pails.

12. Formulation & Activation Guide

• Pre-Gel Method: Many users prefer creating a 10–20% “Pre-gel” by dispersing the wax in a solvent/resin mix at 70°C before adding it to the main batch.

• Direct Addition: If adding during the grind, ensure the temperature reaches at least 55°C (for Xylene-based systems) to ensure full activation of the amide-modified fibers.

13. Troubleshooting Guide

• Problem: “Seeds” or grit in the paint. Solution: The processing temperature was either too low to activate the wax or exceeded the “Safe Temperature Limit.” Switch to a higher-melting modified grade.

• Problem: Low gloss in the finish. Solution: You may be over-dosing the rheology modifier. Reduce the dosage and increase the shear during dispersion.

14. Regulatory & Safety

Our Modified Castor Waxes are REACH Compliant and meet the safety requirements for industrial manufacturing. They are non-hazardous, but as with all waxes, they should be handled in well-ventilated areas to avoid dust inhalation.

15. Contact CTA

For technical comparison sheets between standard HCO and Modified Grades, or to request a sample for your lab trials, please contact our technical division: export@novaind.in

1. Technical Overview

Castor-Based Bio-Lubricant Base Oils are premium synthetic and semi-synthetic esters derived from the chemical modification of castor triglycerides and their fatty acids. Unlike conventional mineral oils, these bio-based fluids possess inherent polarity due to the presence of the 12th-carbon hydroxyl group and ester linkages. This provides a natural affinity for metallic surfaces, creating a robust, low-friction molecular film. In industrial R&D, they are recognized for their exceptional Viscosity Index (VI), high flash points, and superior biodegradability, making them the primary choice for environmentally sensitive applications and high-load mechanical systems.

2. Chemical Structure & Composition

The performance of these base oils is driven by their unique molecular architecture:

• Estolide Structures: Polymerized fatty acid chains that offer high oxidative stability and customized viscosity.

• Triglyceride Backbone: Provides high shear stability and high smoke points.

• Polarity: The oxygen-rich structure ensures that additives (anti-wear, extreme pressure) remain in a stable solution better than in non-polar hydrocarbon oils.

The absence of paraffinic waxes in these castor derivatives ensures that they maintain fluidity at lower temperatures without the need for high dosages of pour-point depressants.

3. Physical & Chemical Properties

• Viscosity Index (VI): Typically 180 to 220 (significantly higher than Group II or III mineral oils).

• Flash Point: >280°C (up to 310°C for specialized grades), offering a wide safety margin.

• Biodegradability: >80% in 28 days (CEC-L-33-A-93), meeting stringent environmental criteria.

• Pour Point: Range from -15°C to -45°C depending on the degree of esterification.

• Volatility (Noack): Exceptionally low, reducing oil consumption and thickening in high-heat service.

4. Reaction Chemistry (Lubrication Science)

The superiority of castor-based oils is rooted in surface chemistry:

1. Polar Adsorption: The ester and hydroxyl groups form a physico-chemical bond with the metal substrate, providing “boundary lubrication” even when the oil film is thin.

2. Solvency: They naturally dissolve carbon deposits and varnish, keeping engines and industrial gearboxes cleaner for longer periods.

3. Shear Stability: The molecular chains are resistant to mechanical shearing, maintaining consistent viscosity under high-pressure conditions.

5. When to Use vs. When NOT to Use

Use Castor-Based Bio-Lubricants when:

• Formulating Total Loss Lubricants (Chainsaw oils, 2-stroke marine oils, rail curve greases) where oil enters the environment.

• Operating in High-Temperature environments like oven chains, glass manufacturing, or steel mills.

• Requiring Food-Grade or “Environmentally Acceptable Lubricants” (EALs) for offshore or agricultural equipment.

Do NOT use Castor-Based Bio-Lubricants when:

• The system has seals made of low-quality Nitrile or natural rubber (these oils may cause excessive seal swell; use Viton or high-grade NBR instead).

• The application involves long-term storage in high-moisture environments without proper antioxidant and hydrolysis stabilizer packages.

6. Compatibility Profile

• Synthetic Esters: Fully miscible with TMP-Esters and Adipates.

• Mineral Oils: Limited compatibility; it is recommended to flush systems before switching from mineral to bio-based oils.

• Seals: Compatible with Fluorocarbons (Viton), Teflon, and high-nitrile elastomers.

7. Manufacturing Process (Product Focus)

Nova Industries utilizes a specialized refining and esterification process:

1. Refining: Elimination of gums and proteins to ensure high thermal stability.

2. Chemical Modification: Processes like transesterification or estolide synthesis to tailor the viscosity and pour point.

3. Additive Response Testing: The base oil is “pre-screened” to ensure maximum synergy with modern ashless anti-wear and anti-corrosion additives.

4. Micro-Filtration: Final filtration to NAS 6 / ISO 4406 standards for use in sensitive hydraulic systems.

8. Technical Specifications Table

Parameter	ISO VG 68 Grade	ISO VG 220 Grade
Appearance	Pale Yellow Liquid	Amber Liquid
Viscosity at 40°C	64 – 72 cSt	210 – 230 cSt
Viscosity Index	190 Min	210 Min
Flash Point (COC)	290°C	310°C
Pour Point	-25°C	-15°C
Total Acid Value	<1.0 mg KOH/g	<1.5 mg KOH/g

9. Quality Grade Analysis

Nova Industries focuses on Oxidative Induction Time (OIT). By using advanced natural antioxidants, we ensure that our bio-lubricant base oils do not “thicken” or oxidize as rapidly as crude vegetable oils. This allows for extended drain intervals, matching the performance of synthetic hydrocarbons.

10. Industry-Wise Application 1: Agriculture & Forestry

Used as the base fluid for chainsaw bar oils and tractor hydraulic fluids. In the event of a leak, the oil biodegrades naturally in the soil or water, preventing long-term environmental damage.

11. Industry-Wise Application 2: Marine & Offshore

Meets the requirements for VGP (Vessel General Permit) compliant lubricants. Used in stern tube seals, thrusters, and deck machinery where water contamination and environmental leakage are constant risks.

12. Industry-Wise Application 3: High-Performance Racing

In high-revving engines, castor-based oils provide unparalleled film strength. They are legendary in the racing industry for preventing “seizing” under extreme heat where mineral oils would lose their lubricating film.

13. Industry-Wise Application 4: Metalworking Fluids

Used as a lubricity additive in soluble cutting oils. It improves the surface finish of machined parts and extends the life of the cutting tools by reducing heat at the friction point.

14. Formulation Guide

• Antioxidants: Always use 0.5% to 1.5% of an aminic or phenolic antioxidant to maximize oil life.

• Seal Swell: These oils naturally swell seals; if used in a blend, they can act as a natural seal-swell agent for PAO-based lubricants.

15. Sustainability Data

Our Bio-Lubricant Base Oils are 100% renewable. They provide a carbon-neutral alternative to petroleum lubricants, helping industrial users meet ESG (Environmental, Social, and Governance) goals and reduce Scope 3 emissions.

16. Packaging & Logistics (Technical)

• Standard: 200kg New Steel Drums or 1000kg IBC Tanks.

• Bulk: ISO Tanks for large-scale industrial blending plants.

• Logistics: Non-hazardous and non-toxic for transport.

17. Storage Science

Must be stored in a cool, dry area. While stable, these oils can absorb moisture (hygroscopic). Ensure tanks are fitted with desiccant breathers. Nitrogen blanketing is highly recommended for bulk storage to prevent oxidative aging.

18. Troubleshooting Guide

• Problem: Oil is darkening in the machine. Solution: This may indicate high-temperature oxidation; check for hot spots in the system or increase the antioxidant dosage.

• Problem: Water contamination causes haziness. Solution: Castor-based oils have good demulsibility, but if haze persists, the oil may need to be centrifuged or passed through a water-removal filter.

19. Regulatory Compliance

Our Bio-Lubricant Base Oils are REACH Compliant, meet the criteria for the EU Ecolabel, and are compliant with the USDA BioPreferred program.

20. Sample Validation Process

Test for Kinematic Viscosity and Acid Value. For high-load applications, a “Four-Ball Weld Point” test is recommended to verify the extreme pressure (EP) capabilities of the base oil.

21. Contact CTA

For Technical Data Sheets (TDS), customized viscosity blending, or to request a sample for your lubricant formulation, please contact our technical export team: export@novaind.in