发明授权
US4094849A Process for producing aqueous dispersion of ethylene-vinyl acetate
copolymer containing no formalin
失效
制备不含福尔马林的乙烯 - 乙酸乙烯酯共聚物水分散体的方法
- 专利标题： Process for producing aqueous dispersion of ethylene-vinyl acetate copolymer containing no formalin
- 专利标题（中）： 制备不含福尔马林的乙烯 - 乙酸乙烯酯共聚物水分散体的方法
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申请号： US736100申请日： 1976-10-27
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公开(公告)号： US4094849A公开(公告)日： 1978-06-13
- 发明人: Takeo Oyamada , Kazuhisa Satoh , Shinobu Tsuru , Masahiro Domoto , Shizuo Narisawa
- 申请人： Takeo Oyamada , Kazuhisa Satoh , Shinobu Tsuru , Masahiro Domoto , Shizuo Narisawa
- 申请人地址： JA
- 专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人地址： JA
- 优先权： JA50-132694 19751104
- 主分类号： C08L23/00
- IPC分类号： C08L23/00 ; C08F2/00 ; C08F2/16 ; C08F2/22 ; C08F4/00 ; C08F4/40 ; C08F10/00 ; C08F210/00 ; C08F210/02 ; C08F218/00 ; C08F218/02 ; C08F218/08 ; C08L1/00 ; C08L27/00 ; C08L31/04 ; C08L33/00 ; C08L33/02 ; C08L101/00 ; C08L31/00
摘要：
A process for producing an aqueous dispersion of ethylene-vinyl acetate copolymer containing no formalin by emulsion-polymerizng ethylene and vinyl acetate and optionally other copolymerizable vinyl monomers in the presence of a redox catalyst consisting of an oxidizing agent and a reducing agent, which is characterized in that a reaction product of a glyoxal compound and an alkali metal, ammonium or zinc salt of a reductive sulfur oxide is used as the reducing agent for the redox catalyst, in which process the polymerization temperature is easily controlled.
公开/授权文献
- US5689486A Optical disc reproducing apparatus 公开/授权日：1997-11-18
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