Description

Castor Oil/2,4-Toluenediisocyanate Copolymer is a specialized polyurethane prepolymer derived from the reaction of castor oil and 2,4-toluene diisocyanate (2,4-TDI). This copolymer is valued for its unique combination of flexibility, hydrolytic stability, and adhesion properties imparted by the castor oil backbone. It is primarily utilized in industrial formulations requiring durable, moisture-resistant polymers, such as in coatings, sealants, and adhesive systems for various substrates.

Application

• Polyurethane Coatings & Paints: Serves as a key resin component in high-performance, flexible, and chemical-resistant coatings for industrial flooring, automotive parts, and marine applications.
• Sealants & Caulks: Used as a base polymer in one- and two-component sealant formulations, offering excellent adhesion to concrete, metal, and wood with good weatherability.
• Adhesives & Binders: Functions as a toughening agent and binder in structural and elastic adhesive systems, particularly where moisture resistance is critical.
• Elastomer Modification: Employed to modify the properties of polyurethane and other elastomers, enhancing flexibility, impact resistance, and low-temperature performance.
• Waterproofing Membranes: A vital ingredient in liquid-applied waterproofing systems for roofs, foundations, and balconies due to its inherent hydrophobic nature.
• Composite Materials: Acts as a matrix resin or compatibilizer in fiber-reinforced composites and filled polymer systems.

Basic Information

Product Name	Castor Oil/2,4-Toluenediisocyanate Copolymer
CAS No.	66071-12-3
Molecular Formula	Contact for details
Molecular Weight	Varies (Polymer)
Synonyms	Castor Oil - TDI Copolymer; TDI-Castor Oil Adduct; Polyurethane Prepolymer from Castor Oil and TDI; Castor Oil/TDI Prepolymers; 2,4-TDI/Castor Oil Copolymer; Urethane Modified Castor Oil; Castor Oil Polyurethane Resin; Ricinoleic Acid/TDI Copolymer
EINECS	Contact for details

Quality Control

Our Castor Oil/2,4-Toluenediisocyanate Copolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including measurement of NCO content, viscosity, and residual monomer levels. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Due to its hygroscopic nature, containers must be kept sealed when not in use to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Viscous liquid, clear to pale yellow
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Residual TDI Monomer	< 0.5% (by HPLC)
Specific Gravity (25°C)	Contact for details
Moisture Content	< 0.1% (by Karl Fischer)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.