INFRARED LIGHT SHIELDING MULTILAYER SHEET AND METHOD FOR PRODUCING SAME

WIPO Patent Application WO/2020/022426

A1

The present invention provides a multilayer sheet which has good color and good infrared light shielding properties, while exhibiting excellent weather resistance. The present invention relates to a multilayer sheet (10X) which is obtained by superposing a surface layer (12A, 12B) that contains a methacrylic resin on at least one surface of a base material layer (11) that contains a polycarbonate resin. The base material layer (11) contains a coloring agent. This multilayer sheet has a total thickness of 3.0-10.0 mm; and if T1 is the thickness of the base material layer (11) and T2 is the total thickness of the surface layers (12A, 12B), T1 > T2 is satisfied. The multilayer sheet has a total light transmittance of 3-60%, while having a transmittance at the wavelength of 1,500 nm of 60% or less. In the L*a*b* color space defined by JIS Z 8781-4, the absolute value of a* is 10.0 or less and the absolute value of b* is 10.0 or less.

OZAWA YUSHI (JP)
OHTA DAISUKE (JP)

PCT/JP2019/029207

January 30, 2020

July 25, 2019

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KURARAY CO (JP)

B32B27/36; B29C48/21; B32B27/18; B32B27/30; B60J1/00; B29K33/00; B29K69/00

WO2017217429A1	2017-12-21
WO2017030147A1	2017-02-23
WO2015133530A1	2015-09-11
WO2018003863A1	2018-01-04
WO2009054051A1	2009-04-30
WO2009054060A1	2009-04-30
WO2016104375A1	2016-06-30
WO2007105741A1	2007-09-20
WO1995017303A1	1995-06-29
WO2007008476A2	2007-01-18
WO2010013557A1	2010-02-04

JP2015128899A	2015-07-16
JP2019044109A	2019-03-22
JPH07187727A	1995-07-25
JPH09506837A	1997-07-08
JP2009501266A	2009-01-15
JP2004352837A	2004-12-16
JP2018141338A	2018-09-13

See also references of EP 3831600A4

IEIRI Takeshi (JP)

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