Stabilization of post-chlorinated vinyl chloride polymers by pho

Details Stabilization of post-chlorinated vinyl chloride polymers by pho Stabilization of post-chlorinated vinyl chloride polymers by pho

1980-06-16

1982-08-17

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 85, 521145, 525192, 525227, 525 83, 524417, 524567, 524156, C08J 940

Patent

active

043450407

ABSTRACT:
The invention relates to porous post-chlorinated polyvinyl chloride resins which contain or have incorporated therein a salt of phosphoric acid resulting in a substantial improvement in the thermal stability thereof during subsequent processing. The phosphate salt is added to the porous post chlorinated polymer from an aqueous solution thereof which optionally contains a surfactant, which wets the polymer particles and allows the penetration thereof by the solution. Post chlorinated polyvinyl chloride (CPVC) is the most preferred polymer or resin.

REFERENCES:
patent: 4170696 (1979-10-01), Hirohara
patent: 4224374 (1980-09-01), Priest

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