Title:
合わせガラス用中間膜及び合わせガラス
Document Type and Number:
Japanese Patent JP5064606
Kind Code:
B2
Abstract:
The present invention provides an intermediate film for laminated glass which can improve the sound-insulating property. The intermediate film for laminated glass according to the present invention has a layered structure including at least two layers, comprising: a first layer containing a polyvinyl acetal resin and a plasticizer; and a second layer positioned on a first surface of the first layer. In a phase diagram of three values including a degree of acetalization, a degree of acetylation, and a hydroxy group content of the polyvinyl acetal resin contained in the first layer, the values of the degree of acetalization, the degree of acetylation, and the hydroxy group content each fall within a region surrounded by a line including four straight lines connecting a first coordinate (degree of acetalization:degree of acetylation:hydroxy group content = 70 mol%: 30 mol%: 0 mol%), a second coordinate (degree of acetalization:degree of acetylation:hydroxy group content = 34 mol%:30 mol%:36 mol%), a third coordinate (degree of acetalization:degree of acetylation:hydroxy group content = 94 mol%: 0 mol%:6 mol%), and a fourth coordinate (degree of acetalization:degree of acetylation:hydroxy group content = 100 mol%: 0 mol%: 0 mol%) in the stated order.
Inventors:
Shimamoto Michio
Matsuda Takuta
Liang Noboru
Kani Kohei
Tatsuya Iwamoto
Matsuda Takuta
Liang Noboru
Kani Kohei
Tatsuya Iwamoto
Application Number:
JP2012508839A
Publication Date:
October 31, 2012
Filing Date:
February 10, 2012
Export Citation:
Assignee:
Sekisui Chemical Co.,Ltd.
International Classes:
C03C27/12; C08F18/04; B60J1/00
Foreign References:
| WO2010008053A1 | 2010-01-21 | |||
| WO2010095749A1 | 2010-08-26 |
Attorney, Agent or Firm:
Patent business corporation Miya saki, table of contents patent office