Title:
INTERLAYER FOR LAMINATED GLASS, AND LAMINATED GLASS
Document Type and Number:
WIPO Patent Application WO/2018/181746
Kind Code:
A1
Abstract:
Provided is an interlayer for laminated glass with which it is possible to increase the flexural stiffness of laminated glass at 23°C, and improve the sound insulation properties and piercing resistance of the laminated glass. This interlayer for laminated glass contains polyvinyl acetal resin and a plasticizer, and the gel fraction determined by formula (X) falls within the range of 10% to 80% by weight, inclusive, the glass transition temperature falls within the range of -30°C to 0°C, inclusive, and the maximum value for tanδ in the temperature region of -30°C to 0°C is at least 0.1. Formula (X): gel fraction (% by weight)=W2/W1×100 (in the formula, W1 is the weight of the interlayer before being immersed in tetrahydrofuran at 23°C, and W2 is the weight of the interlayer which has been immersed in tetrahydrofuran at 23°C and subsequently dried)
Inventors:
OOHIGASHI YUJI (JP)
SHINDO KAORU (JP)
SHINDO KAORU (JP)
Application Number:
PCT/JP2018/013323
Publication Date:
October 04, 2018
Filing Date:
March 29, 2018
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
B32B7/02; C03C27/12; B32B17/10; B32B27/22; B32B27/30; C08J5/18; C08L29/14; C08L33/00
Domestic Patent References:
| WO2016158696A1 | 2016-10-06 | |||
| WO2016039477A1 | 2016-03-17 |
Foreign References:
| JP2015187075A | 2015-10-29 |
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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