Description

Isocyanic Acid, Methylenedi-p-Phenylene Ester, Polymer With 1,2-Propanediol And Propylene Oxide is a specialized polymeric isocyanate, commonly recognized as a key intermediate in polyurethane chemistry. This compound matters for its role as a reactive building block, enabling the formulation of high-performance polyurethane foams, coatings, and elastomers with tailored properties. Industrial manufacturers in the polyurethane, adhesives, and specialty polymer sectors require this material to develop products with specific mechanical strength, flexibility, and chemical resistance.

Application

• Primary raw material for the production of flexible and rigid polyurethane foams used in insulation, automotive seating, and furniture.
• Key component in the synthesis of polyurethane coatings and adhesives for industrial, construction, and automotive applications.
• Intermediate for manufacturing elastomers and sealants requiring durability and resistance to environmental factors.
• Used in the formulation of binders and composites for specialized industrial materials.
• Research and development of novel polymer systems with enhanced thermal or mechanical properties.

Basic Information

Product Name	Isocyanic Acid, Methylenedi-p-Phenylene Ester, Polymer With 1,2-Propanediol And Propylene Oxide
CAS No.	34149-87-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polymeric MDI; PMDI; Polymeric Methylene Diphenyl Diisocyanate; MDI Polymer; Polymeric Diphenylmethane Diisocyanate; Isocyanic Acid, Polymer with Formaldehyde and 4,4'-Methylenedianiline; Polymeric Isocyanate; Polymeric Aromatic Isocyanate
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Every batch is controlled against stringent specifications for isocyanate content, viscosity, and hydrolyzable chlorine to guarantee consistency and performance in downstream applications. Certificates of Analysis (COA) are available upon request, providing full transparency and traceability.

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). This material is hygroscopic (moisture-sensitive) and must be kept under a dry inert atmosphere (e.g., nitrogen) to prevent reaction with atmospheric moisture, which can lead to gelation or loss of reactivity.

Specification

Item	Specification
Appearance	Brown viscous liquid
Identification (IR)	Conforms
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Hydrolyzable Chlorine	≤ 0.1%
Acidity (as HCl)	≤ 0.05%
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.