发明名称 |
Polymer scale preventive process |
摘要 |
A polymer scale preventive process for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising an alkaline solution containing (A) a condensation product of (A-1) an aromatic compound having at least two amino groups with (A-2) an aromatic tetracarboxylic acid anhydride, and (B) at least one member selected from the group consisting of (B-1) a water-soluble polymeric compound and (B-2) an inorganic colloid. The scale preventive process is low in virulence or the like, and high in safety. The process is used for forming a coating on inner wall surfaces of a polymerization vessel. Where such a polymerization vessel is used to carry out the polymerization, polymer scale deposition can be effectively prevented, not only on areas in the liquid-phase region but on areas around the gas-liquid interface in the vessel, and the resulting polymeric product shows few fish eyes and good whiteness when formed into sheets or the like.
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申请公布号 |
US5484855(A) |
申请公布日期 |
1996.01.16 |
申请号 |
US19940181091 |
申请日期 |
1994.01.13 |
申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
SHIMIZU, TOSHIHIDE;WATANABE, MIKIO |
分类号 |
C08F2/00;C08F10/00;(IPC1-7):C08F2/00 |
主分类号 |
C08F2/00 |
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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