- 专利标题： VERFAHREN ZUR HERSTELLUNG VON POLYVINYLACETALEN
- 专利标题（英）： Method for producing polyvinylacetals
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申请号： EP03757786.3申请日： 2003-09-04
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公开(公告)号： EP1539830A1公开(公告)日： 2005-06-15
- 发明人: STARK, Kurt , TSCHIRNER, Peter , EICHEL, Karl-Heinz , FRIEDL, Georg , EICHBERGER, Franz
- 申请人： Wacker Polymer Systems GmbH & Co. KG
- 申请人地址： Johannes-Hess-Strasse 24 84489 Burghausen DE
- 专利权人： Wacker Polymer Systems GmbH & Co. KG
- 当前专利权人： Wacker Polymer Systems GmbH & Co. KG
- 当前专利权人地址： Johannes-Hess-Strasse 24 84489 Burghausen DE
- 代理机构： Schuderer, Michael, Dr.
- 优先权： DE10242417 20020912
- 国际公布： WO2004026917 20040401
- 主分类号： C08F8/28
- IPC分类号： C08F8/28
摘要：
The invention relates to a method for producing polyvinylacetals that can be obtained by saponifying a vinylester polymer and subsequently acetalizing the polyvinyl alcohol, which is obtained therewith, with one or more aldehydes selected from the group consisting of aliphatic and aromatic aldehydes having 1 to 15 C atoms, whereby: a) the polyvinyl alcohol is present in an aqueous medium; b) a pH value of
公开/授权文献
- EP1539830B1 VERFAHREN ZUR HERSTELLUNG VON POLYVINYLACETALEN 公开/授权日：2005-11-23
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