Description

Isocyanic acid, polymethylenepolyphenylene ester, polymer with .alpha.-hydro-.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and methyloxirane polymer with oxirane ether with 1,2,3-propanetriol is a specialized polymeric isocyanate, commonly recognized as a key component in the formulation of high-performance polyurethane systems. This compound is engineered to deliver enhanced reactivity control and tailored final material properties, making it a critical raw material for advanced manufacturing. It is primarily sought by formulators in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing rigid and flexible foams requiring specific mechanical and chemical resistance profiles.

Application

• High-Performance Polyurethane Coatings: Used as a crosslinking agent in industrial, automotive, and protective coatings for superior durability, chemical resistance, and gloss retention.
• Specialty Adhesives & Sealants: Serves as a core component in formulating structural adhesives and high-strength sealants with excellent bonding properties and flexibility.
• Elastomer Production: Key ingredient in the manufacture of cast, thermoplastic, and millable polyurethane elastomers for gaskets, wheels, and industrial parts.
• Rigid & Flexible Foam Systems: Imparts specific density, insulation value, and structural integrity to foam products used in construction, appliance, and automotive applications.
• Composite Materials: Acts as a matrix resin or modifier in fiber-reinforced composites, enhancing interlaminar shear strength and thermal stability.
• Binder Systems: Employed in foundry sands, abrasives, and non-woven fabrics to provide strong, resilient binding matrices.

Basic Information

Product Name	Isocyanic acid, polymethylenepolyphenylene ester, polymer with .alpha.-hydro-.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and methyloxirane polymer with oxirane ether with 1,2,3-propanetriol
CAS No.	84563-02-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polymeric MDI (pMDI) modified with polyether polyol; Polyurethane prepolymer based on polymeric MDI and polyoxypropylene glycol; Isocyanate-terminated polyether prepolymer; Modified polymeric diphenylmethane diisocyanate; Polymeric isocyanate prepolymer; Polyether-modified pMDI; PMDI-polyol adduct; Polymeric isocyanate resin
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. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures recommended for polyurethane prepolymers, typically between 15°C and 25°C. This product is hygroscopic (moisture-sensitive). Containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture ingress and premature reaction, which can lead to gelation or CO2 generation.

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.