Title:
MULTILAYER FILM AND INTERMEDIATE FILM FOR LAMINATED GLASS FORMED OF SAME
Document Type and Number:
WIPO Patent Application WO/2015/059829
Kind Code:
A1
Abstract:
A multilayer film which has a layer (X) that contains a polyvinyl acetal (I) having an acetalization degree of 55-80% by mole and a content of a vinyl ester monomer unit of 0.1-1.5% by mole, an ultraviolet absorbent and a plasticizer, and a layer (Y) that contains a polyvinyl acetal (II) having an acetalization degree of 70-85% by mole and a content of a vinyl ester monomer unit of 5-15% by mole, heat blocking fine particles, a surfactant, an alkali metal salt and/or an alkaline earth metal salt, and a plasticizer, and wherein the layer (X) is arranged on both outer surfaces of the layer (Y) and both the polyvinyl acetal (I) and the polyvinyl acetal (II) satisfy formulae (1) and (2).
(A - B)/A < 0.60 (1)
0.50 × 10-3 ≤ b ≤ 1.00 × 10-2 (2)
Consequently, there can be provided a film which has sufficient heat blocking performance, sufficient sound absorption performance, reduced inclusion of foreign substances (unsolved contents) and excellent recyclability, while being suppressed in coloration caused by heating.
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Inventors:
KUSUDOU TAKESHI (JP)
YUI TAIGA (JP)
YUI TAIGA (JP)
Application Number:
PCT/JP2013/079021
Publication Date:
April 30, 2015
Filing Date:
October 25, 2013
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
B32B27/30; B32B17/10; C03C27/12; C08F8/28; C08F16/38; C08L29/14
Foreign References:
| JP2003252655A | 2003-09-10 | |||
| JP2004002108A | 2004-01-08 | |||
| JP2012025645A | 2012-02-09 | |||
| JP2011251906A | 2011-12-15 | |||
| JP2011084468A | 2011-04-28 | |||
| JP2011508802A | 2011-03-17 |
Attorney, Agent or Firm:
NAKATSUKASA, Shigeki et al. (JP)
Shigeki Nakamu (JP)
Shigeki Nakamu (JP)
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