发明名称 |
Thin film monomer removal from polyvinyl chloride latexes |
摘要 |
A process for extracting vinyl chloride monomer from polyvinyl chloride latexes is disclosed, characterized in that the latex is continuously flowed on and along a heat exchange surface in the form of a thin film having a thickness ranging from 0.5 to 1.2 mm, said latex having a temperature between 40 DEG and 70 DEG C. and under a pressure ranging from 45 to 210 mm Hg., and for a time ranging from 10 to 70 seconds. The gaseous vinyl chloride monomer is removed concurrently with the flow of the latex. Suitable apparatus is also disclosed.
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申请公布号 |
US4315843(A) |
申请公布日期 |
1982.02.16 |
申请号 |
US19800153605 |
申请日期 |
1980.05.27 |
申请人 |
MONTEDISON S.P.A. |
发明人 |
VIDOTTO, GRAZIANO;SELLAN, FEBO;BACCHETTA, ENZO;MAINARDI, SANDRO;BENUSSI, GIOVANNI |
分类号 |
C08F14/00;C08F6/00;C08F6/06;C08F6/14;C08F6/16;C08F14/06;(IPC1-7):C08F6/16 |
主分类号 |
C08F14/00 |
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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