Castor Oil Polyols

What Castor Oil Polyols Do & Buyer Problems They Solve

What They Do:

• React directly with isocyanates to form polyurethane polymers – the high hydroxyl functionality of castor oil polyols enables efficient urethane linkage formation, yielding PU products with strong mechanical properties including tensile strength, abrasion resistance, and chemical resistance.
• Deliver thermal stability and hydrophobic performance – castor oil polyols maintain structural integrity at elevated temperatures and provide inherent hydrophobic characteristics that improve moisture resistance in coatings, elastomers, and foams.
• Provide a sustainable, cost-stable bio-based feedstock – as a derivative of castor oil grown primarily in India, these polyols are renewable, biodegradable, and less exposed to the price volatility of petrochemical feedstocks.

Buyer Problems They Solve:

• If you’re under pressure to reduce the petroleum content in your PU formulations due to sustainability mandates – castor oil polyols offer a direct, drop-in bio-based alternative that meets performance requirements without compromising quality.
• If your polyurethane products require improved flexibility combined with chemical and corrosion resistance – castor polyols create PU networks with excellent balance between rigidity and toughness, ideal for floor coatings and industrial linings.
• If you’re struggling with inconsistent batch quality from your current polyol supplier – Nova Industries’ in-house manufacturing ensures stable hydroxyl values, viscosity, and acid values across every production lot.
• If your formulation requires compatibility with both aromatic and aliphatic isocyanates – castor oil polyols offer broad isocyanate compatibility (MDI, TDI, HDI), giving your R&D team formulation flexibility across PU systems.

Key Properties & Performance Characteristics

• Appearance: Clear to pale yellow viscous liquid
• Hydroxyl Value: 150–400 mg KOH/g depending on grade and molecular weight
• Acid Value: ≤ 2 mg KOH/g (controlled for clean urethane reaction)
• Viscosity: 800–5000 cP at 25°C depending on grade
• Moisture Content: ≤ 0.1% (critical for isocyanate systems to prevent CO₂ foam formation)
• Colour: ≤ 50 APHA (clear, light-coloured – important for coating applications)
• Flash Point: > 200°C (safe for handling and transportation)
• Functionality: 2.0–4.5 hydroxyl groups per molecule depending on modification
• Thermal Stability: Withstands processing temperatures above 200°C without significant degradation
• Isocyanate Compatibility: Reacts effectively with MDI, TDI, IPDI, and HDI

Stability, Shelf Life & Storage

• Shelf Life: 12 months from date of manufacture under recommended storage conditions
• Storage Temperature: Below 30°C in a cool, dry, well-ventilated area
• Moisture Sensitivity: Keep containers tightly sealed – moisture contamination leads to CO₂ generation in isocyanate systems and compromises product quality
• Avoid exposure to: Direct sunlight, heat sources, strong acids and bases, and oxidizing agents
• Container Material: MS drums or HDPE containers – avoid reactive metals
• Packaging: Standard 200 kg drums and 1000 kg IBC containers; custom quantities on request

Manufacturing & Quality Control

Nova Industries produces Castor Oil Polyols using castor oil as the primary bio-based feedstock. Our controlled manufacturing process involves:

• Feedstock Selection: High-purity refined castor oil with verified ricinoleic acid content
• Polyol Preparation: Controlled reaction conditions including precise temperature management to achieve target hydroxyl values and molecular weight
• Refining: Post-reaction processing to remove by-products and control final colour and viscosity
• Batch Testing: Every production batch is tested for Hydroxyl Value, Acid Value, Viscosity, Moisture, and Colour before release
• Documentation: Full CoA issued per batch; MSDS available on request
• Manufacturing facility: ISO-compliant processes with in-house analytical quality control