Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1994-06-06
1995-08-22
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, 524567, C08K 558
Patent
active
054441110
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.
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Beekman George F.
Conroy Gary M.
Hyde Jeffrey R.
Norris Gene K.
Didrick Robert M.
Hoke Veronica P.
Morton International Inc.
White Gerald K.
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