Title:
LAMINATE, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2022/230547
Kind Code:
A1
Abstract:
The present invention provides a laminate including an acrylic-resin-containing layer and a thermoplastic-polyurethane-resin-containing layer, the laminate being such that the uniformity in the thickness of the thermoplastic-polyurethane-resin-containing layer is excellent, roughening of the interface between the acrylic-resin-containing layer and the thermoplastic-polyurethane-resin-containing layer is suppressed, and exceptional scratch resistance and chemical resistance are exhibited. The laminate (1) according to the present invention includes a laminate structure formed from a base-material layer (21) composed of a resin composition (A) that contains an acrylic resin, and a surface layer (22) composed of a resin composition (B) that contains a thermoplastic polyurethane resin (b1) having structural units derived from polyols and aliphatic diisocyanates, the laminate satisfying formula (1), where ηA and ηB represent the melt viscosity of the resin composition (A) and the resin composition (B), respectively, as measured at a temperature of 220°C and a shear rate of 50 s-1. Formula (1): 0.03≤ηB/ηA≤2.00
Inventors:
OZAWA YUSHI (JP)
YAMANO MASAHARU (JP)
YAMANO MASAHARU (JP)
Application Number:
PCT/JP2022/015281
Publication Date:
November 03, 2022
Filing Date:
March 29, 2022
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
B32B27/08; B32B27/30
Domestic Patent References:
| WO2018221580A1 | 2018-12-06 |
Foreign References:
| JP2021037751A | 2021-03-11 | |||
| JP2021059665A | 2021-04-15 | |||
| JP2018203993A | 2018-12-27 |
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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