发明公开
- 专利标题： Process for producing raw rubber
- 专利标题（中）： Verfahren zur Herstellung von Rohkautschuk。
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申请号： EP94107308.2申请日： 1994-05-10
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公开(公告)号： EP0624601A1公开(公告)日： 1994-11-17
- 发明人: Tanaka, Yasuyuki , Hioki, Yuichi , Hayashi, Masaharu , Ichikawa, Naoya , Sakaki, Toshiaki
- 申请人： KAO CORPORATION , SUMITOMO RUBBER INDUSTRIES LIMITED
- 申请人地址： 14-10, Nihonbashi Kayaba-cho, 1-chome Chuo-ku Tokyo JP
- 专利权人： KAO CORPORATION,SUMITOMO RUBBER INDUSTRIES LIMITED
- 当前专利权人： KAO CORPORATION,SUMITOMO RUBBER INDUSTRIES LIMITED
- 当前专利权人地址： 14-10, Nihonbashi Kayaba-cho, 1-chome Chuo-ku Tokyo JP
- 代理机构： Hansen, Bernd, Dr. Dipl.-Chem.
- 优先权： JP111766/93 19930513; JP111767/93 19930513
- 主分类号： C08C1/14
- IPC分类号： C08C1/14 ; C08C1/15 ; C08C1/04
摘要：
A process for producing raw rubber from a deproteinized natural rubber is disclosed, which comprises coagulating rubber particles in the deproteinized natural rubber latex by: (1) adding a nonionic surfactant having a cloud point of from 20 to 100°C and a molecular weight of 300 or more to the deproteinized natural rubber latex and heating the latex to a temperature not lower than the cloud point of the nonionic surfactant; or (2) adding a coagulation assistant selected from the group consisting of: (a) an anionic surfactant, (b) an amphoteric surfactant, (c) a nonionic surfactant, (d) a nonionic or amphoteric oligomer or polymer, and (e) an anionic oligomer or polymer, to the deproteinized natural rubber latex; and then recovering the coagulated rubber particles. According to the process of the present invention, raw rubber containing substantially no metal ion can be produced with a high efficiency.
公开/授权文献
- EP0624601B1 Process for producing raw rubber 公开/授权日：1997-08-06
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