发明授权
- 专利标题: Process for recovering thermoplastic polymers from dispersion
- 专利标题(中): 从分散体中回收热塑性聚合物的方法
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申请号: US358954申请日: 1989-05-30
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公开(公告)号: US4960864A公开(公告)日: 1990-10-02
- 发明人: Christian Lindner , Claus Wulff , Karl-Heinz Ott
- 申请人: Christian Lindner , Claus Wulff , Karl-Heinz Ott
- 申请人地址: DEX Leverkusen
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DEX Leverkusen
- 优先权: DEX3605798 19860222
- 主分类号: C08J11/00
- IPC分类号: C08J11/00 ; C08C1/15 ; C08F6/16 ; C08F6/22 ; C08J11/06
摘要:
Recovery of thermoplastic polymer solids from dispersions thereof by coagulation and subsequent washing of the solids is improved by contacting the polymer in the coagulation stage or the washing stage or in both stages with at least one tricarboxylic acid of the formula ##STR1## wherein X is a single covalent bond, --CH.sub.2 -- or --C.sub.2 H.sub.4 -- and R is H, --OH or ##STR2##
公开/授权文献
- US5594224A Vacuum circuit interrupter 公开/授权日:1997-01-14
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