Description

Isocyanic Acid, Polymethylenepolyphenylene Ester, Polymer With α,α',α''- 1,2,3-Propanetriyltris[ω-Hydroxypoly[Oxy(Methyl -1,2-Ethanediyl)]] is a specialized polymeric isocyanate, commonly recognized as a key component in polyurethane chemistry. This compound matters as a versatile and reactive building block, enabling the formulation of high-performance polyurethane materials with tailored properties. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing rigid and flexible foams.

Application

• Polyurethane Coatings: Serves as a crosslinking agent in high-durability industrial and protective coatings for metal, wood, and concrete.
• Adhesives & Sealants: Used to formulate strong, flexible polyurethane adhesives and sealants with excellent chemical and environmental resistance.
• Elastomers: A critical component in the production of cast, thermoplastic, and millable polyurethane elastomers for wheels, rollers, and gaskets.
• Rigid Polyurethane Foam: Acts as a core isocyanate in the production of rigid foams used for thermal insulation in construction and appliances.
• Flexible Polyurethane Foam: Employed in formulations for flexible foams used in furniture, bedding, and automotive interiors.
• Binder Systems: Utilized as a reactive binder in composite materials, foundry sands, and filtration media.
• Specialty Polymers: Enables the synthesis of specialty polymers with enhanced weatherability, abrasion resistance, and mechanical strength.

Basic Information

Product Name	Isocyanic Acid, Polymethylenepolyphenylene Ester, Polymer With α,α',α''- 1,2,3-Propanetriyltris[ω-Hydroxypoly[Oxy(Methyl -1,2-Ethanediyl)]]
CAS No.	57029-46-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polymeric MDI (pMDI); Polymethylene polyphenylene polyisocyanate; Polymeric diphenylmethane diisocyanate; Isocyanic acid, polymer with alpha,alpha',alpha''-1,2,3-propanetriyltris[ω-hydroxypoly[oxy(methyl-1,2-ethanediyl)]]; Polyurethane prepolymer; Modified MDI; PMDI; Crude MDI; Polymeric isocyanate; Aromatic polyisocyanate.
EINECS	Contact for details

Quality Control

Our production of Isocyanic Acid, Polymethylenepolyphenylene Ester, Polymer With α,α',α''- 1,2,3-Propanetriyltris[ω-Hydroxypoly[Oxy(Methyl -1,2-Ethanediyl)]] adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. The product is manufactured under a quality management system and is compliant with relevant industry standards. Certificates of Analysis (COA) detailing key parameters such as NCO content, viscosity, and acidity 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under a dry atmosphere (e.g., under dry nitrogen) to prevent moisture ingress and premature reaction. Isolate from sources of heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Brown viscous liquid
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Acidity (as HCl)	Contact for details
Hydrolyzable Chlorine	Contact for details
Specific Gravity (25°C)	Contact for details

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