发明授权
- 专利标题: Polyvinyl ester dispersions, process for preparation thereof and use thereof
- 专利标题(中): 聚乙烯酯分散体,其制备方法和用途
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申请号: US12173329申请日: 2008-07-15
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公开(公告)号: US08993668B2公开(公告)日: 2015-03-31
- 发明人: Ivan Cabrera
- 申请人: Ivan Cabrera
- 申请人地址: DE Kronberg
- 专利权人: Celanese Emulsions GmbH
- 当前专利权人: Celanese Emulsions GmbH
- 当前专利权人地址: DE Kronberg
- 代理机构: Dority & Manning, P.A.
- 优先权: DE102007033595 20070719
- 主分类号: C08F2/16
- IPC分类号: C08F2/16 ; C08L11/02 ; C08F2/22 ; C08F218/08 ; C08F220/18 ; C08F263/00 ; C08F263/02 ; C08F263/04 ; C08L51/00 ; C09D131/02 ; C09D143/04 ; C09D151/00 ; C08F230/08
摘要:
What are described are polyvinyl ester dispersions which are prepared in a multistage process and have a low content of polymerized acids or acid anhydrides. They can be obtained by a multistage process in which a polyvinyl ester dispersion is obtained in a first stage, monomers in dissolved or pure form are added to the reaction mixture in a second stage and then the polymerization is started again. The polymer dispersions obtained in this way are notable for a low coagulum content and for increased tensile strengths of the films formed therefrom.
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