Description

Castor Oil, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] And 2,4-Tdi is a specialized polyurethane prepolymer derived from the reaction of castor oil with a blend of aromatic isocyanates. This product matters for its unique combination of bio-based content, excellent adhesion, and flexibility, making it a high-performance raw material for demanding formulations. It is primarily needed by manufacturers in the adhesives, sealants, coatings, and elastomers industries seeking to enhance product durability and environmental profiles.

Application

• High-Performance Adhesives & Sealants: Used as a key component in polyurethane-based adhesives for automotive, construction, and footwear assembly, offering strong bonding and flexibility.
• Protective & Decorative Coatings: Serves as a resin modifier in coatings for metal, concrete, and wood, providing enhanced chemical resistance, abrasion resistance, and weatherability.
• Flexible Elastomers & Castables: Employed in the production of cast polyurethane elastomers for industrial rollers, gaskets, and wear parts, delivering a balance of toughness and resilience.
• Composite Materials: Acts as a matrix resin or compatibilizer in fiber-reinforced composites, improving interfacial adhesion and impact strength.
• Waterproofing Membranes: Formulated into liquid-applied membranes for roofing and infrastructure, creating seamless, durable, and waterproof barriers.
• Binder Systems: Utilized as a binder in specialty applications such as foundry core binders or abrasive wheel manufacturing.

Basic Information

Product Name	Castor Oil, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] And 2,4-Tdi
CAS No.	68952-25-0
Molecular Formula	Complex Polymer (C, H, O, N)
Molecular Weight	Variable (Polymer)
Synonyms	Castor Oil Polyurethane Prepolymer; Castor Oil-MDI-TDI Copolymer; Polyurethane Prepolymer from Castor Oil and Aromatic Diisocyanates; MDI/TDI Modified Castor Oil Polymer; Urethane Modified Castor Oil; Castor Oil Based Polyurethane Resin; 1,1'-Methylenebis[4-isocyanatobenzene], polymer with 2,4-toluene diisocyanate and castor oil
EINECS	Contact for details

Quality Control

Our production of Castor Oil, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] And 2,4-Tdi adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as NCO content, viscosity, and color are rigorously monitored. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C / 59-77°F). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent moisture ingress, which can lead to premature reaction and gelation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Viscous liquid, clear to pale yellow
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Color (Gardner)	≤ 4
Specific Gravity @ 25°C	~1.05 - 1.15
Moisture Content	≤ 0.05%

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