Ammonium chloride as a PVC co-stabilizer

Details Ammonium chloride as a PVC co-stabilizer Ammonium chloride as a PVC co-stabilizer

1995-04-27

1996-07-02

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524181, 524236, 524428, C08K 558

Patent

active

055323030

ABSTRACT:
The presence of ammonium halide in a PVC composition along with conventional primary heat stabilizers enhances the heat stability during the early stages of extrusion into pipe and other articles of manufacture. The ammonium halide which is formed as a by-product of the reaction of a metal halide such as zinc chloride or an organotin chloride with a mercaptoester in the presence of ammonia or an amine may be left in the product or a separate source of the ammonium halide may be used to provide the enhanced heat stability.

REFERENCES:
patent: 5444111 (1995-08-01), Beekman et al.

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