Polymethylene Polyphenyl Polyisocyanate (CAS 9016-87-9): A Versatile Chemical Intermediate

Polymethylene Polyphenyl Polyisocyanate, commonly identified by its CAS number 9016-87-9 and often referred to as PM-200 or polymeric MDI, stands as a crucial chemical intermediate in numerous industrial applications. At room temperature, this substance presents as a distinct brown liquid, characterized by its specific physical and chemical properties that make it invaluable for polymer synthesis, particularly in the field of polyurethanes.

This polyisocyanate is fundamentally a complex mixture primarily composed of diphenylmethane diisocyanate monomers and various higher functionality oligomers. This unique blend is meticulously controlled during manufacturing to achieve specific performance characteristics. One notable property of PM-200 (CAS 9016-87-9) is its excellent foam fluidity, which is essential in applications requiring the material to flow into intricate molds or cover large areas evenly before reacting and solidifying.

The applications for Polymethylene Polyphenyl Polyisocyanate (CAS 9016-87-9) are diverse and far-reaching. Its primary and most significant use lies in the production of rigid polyurethane foam insulation materials. These foams are critical components in construction, refrigeration, and various energy-saving applications due to their superior thermal insulation properties. Beyond rigid foams, this polyisocyanate is also integral to the creation of isocyanurate foams, providing enhanced fire resistance and structural integrity.

Furthermore, PM-200 (CAS 9016-87-9) is widely utilized in the manufacturing of coatings, adhesives, and sealants, where its reactive nature allows for the formation of durable and resilient polymer networks. Other specialized applications include anti-seepage plugging, the production of structural foams, and microporous integral skin foams used in items like shoe soles. The automotive industry also relies on this versatile chemical for components such as bumpers and interior parts, as well as in the production of high-resilience foams for seating and synthetic wood alternatives.

Understanding the technical specifications is key to selecting the appropriate grade for a given application. Polymethylene Polyphenyl Polyisocyanate (CAS 9016-87-9) typically exhibits properties within specific ranges:
Appearance: Brown Liquid
Viscosity at 25ºC: 150-250 mPa.S
NCO Content: 30.5-32.0 %
Density at 25ºC: 1.220-1.250 g/cm3
Acidity (as HCl): ≤0.05 %
Hydrolysable Chlorine: ≤0.2 %
These specifications ensure consistency and reliable performance in downstream processes.

For industries requiring a dependable source of high-quality Polymethylene Polyphenyl Polyisocyanate (CAS 9016-87-9), partnering with a reputable supplier is essential. NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to providing this critical chemical intermediate, manufactured under strict quality control standards to meet the demanding requirements of various applications. We understand the importance of product purity and consistency for achieving optimal results in rigid foams, flexible foams, coatings, and other uses.

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