Description

Isocyanic Acid, Polymethylenepolyphenylene Ester, Polymer With Oxybis[Propanol] is a specialized polymeric isocyanate, commonly recognized as a key polyisocyanate component in advanced polyurethane systems. This compound is essential for creating high-performance materials with superior durability, chemical resistance, and structural integrity. It is primarily sought after by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing rigid and flexible foams.

Application

• High-Performance Polyurethane Coatings: Used as a curing agent or crosslinker in industrial, automotive, and marine coatings for enhanced hardness, gloss, and weather resistance.
• Adhesives and Sealants: Serves as a critical component in formulating structural adhesives and high-strength sealants with excellent bonding properties.
• Elastomers: Employed in the production of polyurethane elastomers for applications requiring exceptional tensile strength, abrasion resistance, and flexibility.
• Rigid and Flexible Foams: Acts as a core isocyanate in the manufacture of insulation foams and cushioning materials.
• Composite Materials: Used as a resin matrix binder in fiber-reinforced plastics and other composite structures.
• Waterborne Polyurethane Dispersions (PUDs): A key raw material for developing environmentally friendly, low-VOC coating and adhesive systems.

Basic Information

Item	Detail
Product Name	Isocyanic Acid, Polymethylenepolyphenylene Ester, Polymer With Oxybis[Propanol]
CAS No.	57288-53-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polymeric MDI (pMDI); Polymethylene polyphenylene polyisocyanate; Polyisocyanate based on MDI; Oxybis[propanol]-modified polymeric isocyanate; Isocyanic acid, polymer with oxybis[propanol] and methylenebis[phenyl isocyanate]; MDI prepolymer; Polymeric diphenylmethane diisocyanate; Aromatic polyisocyanate resin
EINECS	Contact for details

Quality Control

Our production of Isocyanic Acid, Polymethylenepolyphenylene Ester, Polymer With Oxybis[Propanol] adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure consistent NCO content, viscosity, and hydrolyzable chloride levels, meeting precise customer and industry specifications. Certificates of Analysis (COA) documenting purity and key physical-chemical parameters are available upon request, supporting 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 room temperature (typically 15-25°C). This material is hygroscopic (moisture-sensitive); containers must be kept sealed under a dry atmosphere (e.g., under dry nitrogen) to prevent moisture ingress and premature reaction. Keep away from heat, sparks, open flames, and incompatible materials such as alcohols, amines, and water.

Specification

Item	Specification
Appearance	Clear, pale yellow to brown viscous liquid
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Hydrolyzable Chloride	≤ 0.1%
Specific Gravity (25°C)	Contact for details
Flash Point	> 200 °C (closed cup)

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