发明名称 |
Process for the preparation of colour stabilised vinyl chloride polymers. |
摘要 |
<p>The present invention provides a process in which effective colour stabilisation of polyvinyl chloride is achieved by incorporating during vinyl chloride polymerisation a very small quantity (0.005 to 0.04% by weight) of an acyl acetophenone stabiliser of the formula: <CHEM> wherein R represents an alkyl or aryl group optionally substituted by a carboxyl group, or an alkylene group linking with another 3-phenyl-1,3-oxopropyl moiety, and subsequently blending the resulting polyvinyl chloride with one or more divalent metal carboxylates.</p> |
申请公布号 |
EP0014508(A1) |
申请公布日期 |
1980.08.20 |
申请号 |
EP19800200087 |
申请日期 |
1980.01.31 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
HEEMSKERK, JOHANNES;ONDERWATER, MARTINUS ADRIANUS G. |
分类号 |
C08F2/44;C08F14/06;(IPC1-7):08F14/06;08F2/44 |
主分类号 |
C08F2/44 |
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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