Description

Isocyanic acid, polymethylenepolyphenylene ester, polymer with 1,3-diisocyanato-2-methylbenzene, 2,4-diisocyanato-1-methylbenzene and α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)] is a specialized polymeric isocyanate, commonly recognized as a key prepolymer or intermediate in advanced polyurethane chemistry. This compound matters for its ability to impart specific performance characteristics, such as enhanced flexibility, adhesion, and chemical resistance, to final polyurethane formulations. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing high-performance foams and composite materials.

Application

• High-Performance Polyurethane Coatings: Used as a reactive component in two-component (2K) coatings for industrial maintenance, automotive refinish, and protective marine coatings, offering excellent durability and chemical resistance.
• Specialty Adhesives and Sealants: Serves as a key prepolymer in formulating construction adhesives, automotive sealants, and flexible bonding agents where strong adhesion and elasticity are required.
• Elastomer Production: Employed in the manufacture of cast, thermoplastic, and millable polyurethane elastomers for applications like industrial wheels, rollers, and gaskets.
• Flexible and Microcellular Foams: Acts as an intermediate for producing foams with tailored density and resilience, used in automotive interiors, footwear, and technical cushioning.
• Composite Binders and Matrix Materials: Utilized in the production of fiber-reinforced plastics (FRP) and other composite materials to enhance interfacial bonding and mechanical properties.
• Waterborne Polyurethane Dispersions (PUDs): Can be modified and incorporated into environmentally friendly, low-VOC dispersion systems for textiles, leather finishing, and wood coatings.

Basic Information

Product Name	Isocyanic acid, polymethylenepolyphenylene ester, polymer with 1,3-diisocyanato-2-methylbenzene, 2,4-diisocyanato-1-methylbenzene and α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)]
CAS No.	92271-14-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polymeric MDI prepolymer with polyether polyol; TDI-modified polymeric isocyanate; Polyurethane prepolymer based on PMDI and TDI; Isocyanate-terminated polyether prepolymer; Modified diphenylmethane diisocyanate (MDI) prepolymer; Aromatic polyisocyanate prepolymer; Polymeric isocyanate adduct; CAS 92271-14-2
EINECS	Contact for details

Quality Control

Our production of this polymeric isocyanate adheres to rigorous quality testing protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as NCO content, viscosity, and hydrolyzable chlorine are strictly monitored. Certificates of Analysis (COA) detailing all specifications are provided with each shipment. While produced under a quality system, specific grades can be tailored to meet customer requirements for applications demanding compliance with various industry standards.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive) and must be stored under a dry, inert atmosphere (e.g., nitrogen blanket) to prevent premature reaction and gelation. Recommended storage temperature is between 15°C and 25°C (59°F and 77°F) in a cool, dry, well-ventilated area away from heat, sparks, and open flame. Keep container tightly sealed when not in use.

Specification

Item	Specification
Appearance	Clear, pale yellow to amber liquid
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Density @ 25°C	Contact for details
Hydrolyzable Chlorine	≤ 0.1%
Identification (IR)	Conforms

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