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 JP6698542
Kind Code:
B2
Abstract:
There is provided an interlayer film for laminated glass with which the flexural rigidity of laminated glass can be enhanced and the sound insulating properties of laminated glass can be enhanced. The interlayer film for laminated glass according to the present invention includes first, second, and third layers containing a polyvinyl acetal resin and a plasticizer, the content of the hydroxyl group of the polyvinyl acetal resin in the first layer is lower than the content of the hydroxyl group of the polyvinyl acetal resin in each of the second and third layers, when absolute values of a difference between the content of the hydroxyl group of the polyvinyl acetal resin in the second and third layers and the content of the hydroxyl group of the polyvinyl acetal resin in the first layer are defined as XA and XB, respectively, each of the absolute values XA and XB is 9% by mole or more and 11% by mole or less, and when a content of the plasticizer in the interlayer film relative to 100 parts by weight of the polyvinyl acetal resin in the interlayer film is defined as Y, XA, XB, and Y satisfy the equations of Y ‰¤ -1.68XA + 56 and Y ‰¤ -1.68XB + 56.
Inventors:
Tatsuya Iwamoto
Nami Mizuguchi
Nami Mizuguchi
Application Number:
JP2016558413A
Publication Date:
May 27, 2020
Filing Date:
September 08, 2016
Export Citation:
Assignee:
Sekisui Chemical Co.,Ltd.
International Classes:
C03C27/12; B32B17/10; B32B27/00; C08L29/14
Domestic Patent References:
| JP2015516934A | ||||
| JP2013006727A | ||||
| JP2010525967A |
Foreign References:
| WO2012043817A1 | ||||
| WO2012091117A1 | ||||
| WO2011081190A1 |
Attorney, Agent or Firm:
Patent business corporation Miya saki, table of contents patent office