Flame-retardant thermoplastic copolymers based on vinyl phosphon

Details Flame-retardant thermoplastic copolymers based on vinyl phosphon Flame-retardant thermoplastic copolymers based on vinyl phosphon

1992-07-30

1994-05-10

Jagannathan, Vasu S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525285, 525301, 525308, 525316, 525289, C08F25506, C08F27902

Patent

active

053108086

ABSTRACT:
Flame-retardant, thermoplastic copolymers and processes for making them are disclosed. The compositions are copolymers of a vinyl aromatic monomer, a vinyl phosphonic acid derivative, and optionally, an unsaturated organic diacid, ester, or anhydride that are grafted onto a rubber. Processes for making polymers having high molecular weight, good mechanical properties, and a high level of evenly distributed, chemically incorporated vinyl phosphonate flame retardant are also disclosed.

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