Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-11-22
1990-07-31
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525260, 525286, 525302, 525306, 525316, 525313, 525344, C08F 834
Patent
active
049451332
ABSTRACT:
An oxidized halogenated polymer is prepared by a process comprising (a) forming an admixture of an acidic oxidizing agent and a suspension of a particulate halogenated polymer in a polar liquid; (b) heating the admixture to a temperature sufficient to initiate the reaction between the polymer and the oxidizing agent; and (c) continuing the reaction until an oxidized polymer having a preselected extent of oxidation is obtained. At least one addition polymerizable compound is, optionally, grafted to the oxidized halogenated polymer. The oxidized halogenated polymer and graft copolymers thereof have physical properties different from the halogenated polymer and graft copolymers thereof. Certain graft copolymers are non-caking or free flowing.
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Allison Joseph L.
Pennington Donald W.
Guarriello John J.
Schofer Joseph L.
The Dow Chemical Company
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