Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1990-05-08
1992-02-25
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
428415, 428441, 428442, 524527, 524531, 524548, 526266, 526273, C08F21406, B32B 1710
Patent
active
050914871
ABSTRACT:
A vinyl chloride resin for safety glass, comprising either particles of a copolymer of a vinyl chloride monomer and an epoxy-containing monomer, having a particle diameter up to 5 .mu.m and a greater epoxy content in an outer portion than in a an inner portion of the particles, or agglomerates of the particles, and process for the preparation of this resin, comprising either adding an epoxy-containing monomer into a polymerization reaction mixture of a vinyl chloride monomer substantially during a latter half of the polymerization reaction of the polymerization mixture or adding an epoxy-containing monomer and a vinyl chloride monomer either in the form of a mixture solution or separately but at the same time into a polymerization mixture of the vinyl chloride monomer.
REFERENCES:
patent: 4382996 (1983-05-01), Takeshi
patent: 4389508 (1983-06-01), Takeshi
patent: 4397976 (1983-08-01), Takeshi
patent: 4829101 (1989-05-01), Kraemer
Arai Toyoichi
Hori Toshihiko
Nakamura Eitaro
Nippon Zeon Co. Ltd.
Schofer Joseph L.
Zitomer Fred
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