Title:
MULTILAYER FILM
Document Type and Number:
WIPO Patent Application WO/2021/002342
Kind Code:
A1
Abstract:
The present invention provides a film having excellent scratch-resistance and also having excellent flex-resistance. The present invention relates to a multilayer film comprising a base layer and a surface layer formed upon the base layer. The surface layer contains a polyurethane resin (U1) comprising: an active hydrogen ingredient (A1) containing, as an essential ingredient, a compound (a1) having a polyorganosiloxane group and an active hydrogen group; and an isocyanate ingredient (B1). The elastic recovery rate of the polyurethane resin (U1) at 100% elongation is 50 to 100%. The base layer contains a polyurethane resin (U2) comprising an active hydrogen ingredient (A2) and an isocyanate ingredient (B2). The active hydrogen ingredient (A2) contains a polymer polyol (a2) as an essential ingredient, and does not contain the compound (a1) having the polyorganosiloxane group and the active hydrogen group. The elastic recovery rate of the polyurethane resin (U2) at 100% elongation is 80 to 100%.
Inventors:
SAWADA MASAFUMI (JP)
YANAGIDA MASAKI (JP)
YANAGIDA MASAKI (JP)
Application Number:
PCT/JP2020/025615
Publication Date:
January 07, 2021
Filing Date:
June 30, 2020
Export Citation:
Assignee:
SANYO CHEMICAL IND LTD (JP)
International Classes:
B32B27/40; C08G18/38; C08G18/44
Foreign References:
| JP2019073497A | 2019-05-16 | |||
| JP2013147614A | 2013-08-01 | |||
| JP2003026755A | 2003-01-29 | |||
| JP2009024060A | 2009-02-05 | |||
| JP2015131871A | 2015-07-23 | |||
| JPH09235460A | 1997-09-09 | |||
| JP2020097214A | 2020-06-25 |
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (JP)
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