- 专利标题： Multilayer film and interlayer film for laminated glass therefrom
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申请号： US15031315申请日： 2013-10-25
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公开(公告)号： US10016959B2公开(公告)日： 2018-07-10
- 发明人: Takeshi Kusudou , Yoshiaki Asanuma
- 申请人： KURARAY CO., LTD.
- 申请人地址： JP Kurashiki-shi
- 专利权人： KURARAY CO., LTD.
- 当前专利权人： KURARAY CO., LTD.
- 当前专利权人地址： JP Kurashiki-shi
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 国际申请： PCT/JP2013/079022 WO 20131025
- 国际公布： WO2015/059830 WO 20150430
- 主分类号： B32B17/10
- IPC分类号： B32B17/10 ; C08L29/14 ; C08F216/38 ; B29B17/00 ; B29C43/02 ; C08J5/18 ; B29C43/20 ; B29K31/00 ; B29K61/00 ; B29K105/00 ; B29K105/26 ; B29L7/00 ; B29L9/00
摘要：
There is provided a multilayer film comprising a layer (X) containing a polyvinyl acetal (I) having an acetalization degree of 55 to 80 mol %, a content of a vinyl ester monomer unit of 0.1 to 1.5 mol % and a viscosity-average degree of polymerization of 1,400 to 5,000; and a layer (Y) containing a polyvinyl acetal (II) having an acetalization degree of 70 to 85 mol %, a content of a vinyl ester monomer unit of 5 to 15 mol % and a viscosity-average degree of polymerization of 1,400 to 5,000, wherein the multilayer film satisfies formulas (1) and (2): (A−B)/A