发明名称 |
HIGH VINYLIDENE CHLORIDE CONTENT INTERPOLYMER COATING RESINS AND METHOD OF PREPARATION |
摘要 |
<p>A process for preparing in aqueous emulsion an interpolymer composition have polymerized therein 86 to 92 mole percent vinylidene chloride, 14 to 8 mole percent of a comonomer mixture of methyl methacrylate and a comonomer selected from the group consisting of acrylonitrile, methacrylic acid and methacrylonitrile in a ratio of the comonomer to methyl methacrylate of from 0.5:1 to 2:1, and 0.5 to 1.0 weight percent itaconic acid, based on weight of vinylidene chloride plus comonomer mixture. The interpolymers are prepared in a three step process wherein the monomer feeding is step-wise reduced for a portion of Step III and a polymerization initiator is added at the same constant rate as in Steps I and II. The process reduces the amount of unreacted mixed monomers remaining after monomer addition is completed and the detrimental results of a large variation in polymer composition particularly from high vinylidene chloride fractions. 28,791B-F</p> |
申请公布号 |
CA1218790(A) |
申请公布日期 |
1987.03.03 |
申请号 |
CA19820405928 |
申请日期 |
1982.06.24 |
申请人 |
DOW CHEMICAL COMPANY (THE) |
发明人 |
GIBBS, DALE S.;TREPTOW, WARREN L. |
分类号 |
C08F214/00;C08F2/22;C08F14/00;C08F214/08;C09D127/04;C09D127/08;(IPC1-7):C08F2/22 |
主分类号 |
C08F214/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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