Description

Benzene, 1,3-Diisocyanatomethyl-, Homopolymer is a polymeric isocyanate, commonly known as polymeric MDI (PMDI), which serves as a fundamental building block in polyurethane chemistry. This compound is essential for creating rigid, semi-rigid, and flexible polyurethane foams with excellent thermal insulation and structural properties. It is a critical raw material for manufacturers in the construction, automotive, appliance, and furniture industries seeking durable, lightweight, and energy-efficient materials.

Application

• Rigid Polyurethane Foam Production: Primary application for insulation panels, boards, and spray foam used in building and construction for walls, roofs, and refrigeration.
• Automotive Components: Used in the manufacture of interior parts, seating, headrests, and energy-absorbing foams.
• Appliance Insulation: Essential for the production of insulating foam in refrigerators, freezers, and water heaters.
• Adhesives and Binders: Serves as a key component in the formulation of wood adhesives for particleboard, MDF, and oriented strand board (OSB).
• Coatings and Elastomers: Used in the synthesis of high-performance polyurethane coatings, sealants, and elastomeric materials.
• Packaging Foams: Employed in the production of protective packaging materials and flotation devices.

Basic Information

Product Name	Benzene, 1,3-Diisocyanatomethyl-, Homopolymer
CAS No.	9017-01-0
Molecular Formula	(C15H10N2O2)n
Molecular Weight	Polymeric - Contact for details
Synonyms	Polymeric MDI; PMDI; Polymeric Methylene Diphenyl Diisocyanate; 4,4'-Methylenediphenyl Diisocyanate Homopolymer; MDI Homopolymer; Polymeric Diphenylmethane Diisocyanate; Isocyanic Acid, Polymethylenepolyphenylene Ester; Lupranat® M Series; Desmodur® 44V Series; PAPI®
EINECS	Contact for details

Quality Control

Our Benzene, 1,3-Diisocyanatomethyl-, Homopolymer is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing key parameters such as NCO content, viscosity, and acidity. Our quality protocols are designed to meet the demanding specifications of the polyurethane industry.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15-25°C (59-77°F). This product is hygroscopic (moisture-sensitive). Keep container tightly sealed under a dry, inert atmosphere (e.g., nitrogen blanket) to prevent moisture absorption and premature polymerization. Isolate from strong bases, amines, alcohols, and water.

Specification

Item	Specification
Appearance	Brown, viscous liquid
NCO Content	30.0 - 32.0 %
Viscosity (25°C)	150 - 250 mPa·s
Acidity (as HCl)	≤ 0.05 %
Hydrolyzable Chlorine	≤ 0.10 %
Specific Gravity (25°C)	1.22 - 1.25

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