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Title:
POLYVINYL ACETAL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2015/152394
Kind Code:
A1
Abstract:
A composition which contains, per 100 parts by mass of a polyvinyl acetal having an average residual hydroxyl group amount 15-50% by mole, X parts by mass of a compound (I) and Y parts by mass of one or more diester compounds (II) that are selected from among compounds represented by formula (1) and compounds represented by formula (2), while satisfying X = 3-100, Y = 5-60 and X + Y = 42-120. Consequently, the present invention provides a composition which is free from bleeding of a plasticizer even if stored at low temperatures, and which is also free from a problem caused by extraction of a component even in cases where the composition is in contact with water. This composition exhibits excellent sound insulation performance in cases where the composition is used as an intermediate film for laminated glass.

Inventors:
ASANUMA YOSHIAKI (JP)
KUSUDOU TAKESHI (JP)
Application Number:
PCT/JP2015/060587
Publication Date:
October 08, 2015
Filing Date:
April 03, 2015
Export Citation:
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Assignee:
KURARAY CO (JP)
International Classes:
C08L29/14; B32B17/10; B32B27/30; C03C27/12; C08K5/06
Domestic Patent References:
WO2007125868A12007-11-08
WO2009057645A12009-05-07
WO2007142095A12007-12-13
Foreign References:
JP2006077251A2006-03-23
Other References:
See also references of EP 3127961A4
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