Melt processable CPVC blends

Details Melt processable CPVC blends Melt processable CPVC blends

1986-08-11

1987-12-01

Ziegler, Jacob

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524399, 524414, 524423, 525238, 525239, C08K 509, C08L 2704

Patent

active

047105330

ABSTRACT:
Chlorinated polyvinyl chloride (CPVC) polymer alloys generally contain relatively large amounts of a flow enhancing polymer such as alpha-methyl styrene and a compatibilizing agent such as styrene acrylonitrile copolymer. The alloys are made from blends having a significant increase in processing stability, often more than double than CPVC compounds. Conventional salts can be utilized to co-stabilize the blends. Other improved physical properties of the alloys include dramatically reduced melt viscosities and good flexual modulus when compared to CPVC. Good impact resistance can be developed by the incorporation of impact modifiers such as acrylonitrile-butadiene-styrene copolymers. The smoothness of milled sheets made from the CPVC alloys is also significantly improved.

REFERENCES:
patent: 4304884 (1981-12-01), Okamoto
patent: 4501849 (1985-02-01), Bourland

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