发明授权
US08809490B2 Method for producing unsaturated carboxylic acid-modified vinyl alcohol polymer, and gas barrier film or gas barrier laminate using the same
有权
不饱和羧酸改性乙烯醇聚合物的制造方法以及使用该乙烯醇聚合物的阻气性膜或阻气性层叠体
- 专利标题： Method for producing unsaturated carboxylic acid-modified vinyl alcohol polymer, and gas barrier film or gas barrier laminate using the same
- 专利标题（中）： 不饱和羧酸改性乙烯醇聚合物的制造方法以及使用该乙烯醇聚合物的阻气性膜或阻气性层叠体
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申请号： US12302993申请日： 2007-05-31
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公开(公告)号： US08809490B2公开(公告)日： 2014-08-19
- 发明人: Kou Tsurugi , Yoshihisa Inoue , Isao Hara , Hiroyoshi Watanabe , Tomoyoshi Hakamata , Akira Nomoto , Osamu Nakamura
- 申请人： Kou Tsurugi , Yoshihisa Inoue , Isao Hara , Hiroyoshi Watanabe , Tomoyoshi Hakamata , Akira Nomoto , Osamu Nakamura
- 申请人地址： JP Tokyo
- 专利权人： Tohcello Co., Ltd.
- 当前专利权人： Tohcello Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Westerman, Hattori, Daniels & Adrian, LLP
- 优先权： JP2006-155031 20060602
- 国际申请： PCT/JP2007/061499 WO 20070531
- 国际公布： WO2007/142279 WO 20071213
- 主分类号： C08F8/14
- IPC分类号： C08F8/14 ; C08F16/06 ; C08L29/04 ; C08F6/08 ; C08F6/02 ; B01J41/04 ; C08F6/00
摘要：
A method for producing a solution containing at least an unsaturated carboxylic acid-modified vinyl alcohol polymer is characterized by reacting a vinyl alcohol polymer and an unsaturated carboxylic acid compound in the presence of an acid catalyst soluble in the reaction system or a solid acid catalyst, and a gas barrier film is obtained by using the same. An example thereof is a method for producing a solution (A) containing an unsaturated carboxylic acid-modified vinyl alcohol polymer (b), the method comprising following two steps of: (1) a reaction step in which the unsaturated carboxylic acid-modified vinyl alcohol polymer (b) is formed by reacting a vinyl alcohol polymer and an unsaturated carboxylic acid compound (a) in the presence of an acid catalyst soluble in the reaction system; and (2) an ion exchange step in which at least the acid catalyst of acidic compounds is removed by an anion exchange resin.
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