Multilayer film for decorative molding

Patent metadata

Field	Value
Publication number	US-10000667-B2
Application number	US-201715479436-A
Country	US
Kind code	B2
Filing date	Apr 5, 2017
Priority date	Dec 28, 2011
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

A multilayer film includes a protective layer, a color layer and an adhesive layer, with a molding film disposed between either of the adjoining pairs of layers or on an opposite surface of the protective layer to the color layer, wherein the protective layer contains a polyurethane resin (U) formed at least from an active hydrogen component (A) and an organic isocyanate component (B) and having a polycarbonate skeleton with an alicyclic hydrocarbon group and conditions (1) and/or (2) are satisfied:
(1): the polyurethane resin (U) is a polyurethane resin (U1) having an alkoxysilyl and/or a silanol group in a molecule, (2): the protective layer contains a compound (X) having a glycidyl ether and an alkoxysilyl and/or a silanol group, and the polyurethane resin (U) is a polyurethane resin (U2) having an amino group or a carboxyl group and/or a salt thereof.

First claim

What is claimed is:

1. A multilayer film for decorative molding having a multilayer structure comprising a protective layer having a thickness of 20 to 50 μm, a color layer and an adhesive layer arranged in this order, with a molding film disposed between either of adjoining pairs of layers or on an opposite surface of the protective layer to the color layer, wherein the protective layer contains a polyurethane resin (U) formed at least from an active hydrogen component (A) and an organic isocyanate component (B) and having a polycarbonate skeleton with an alicyclic hydrocarbon group and condition (1) and/or condition (2) are satisfied:
(1): the polyurethane resin (U) is a polyurethane resin (U1) having an alkoxysilyl group and/or a silanol group in a molecule,
(2): the protective layer contains a compound (X) having a glycidyl ether group and an alkoxysilyl group and/or a silanol group, and the polyurethane resin (U) is a polyurethane resin (U2) having an amino group or a carboxyl group and/or a salt thereof.

2. The film as described in claim 1 , wherein the active hydrogen component (A) contains a polycarbonate polyol (a1) having an alicyclic hydrocarbon group.

3. The film as described in claim 2 , wherein the number average molecular weight of the polycarbonate polyol (a1) is 500 to 5,000 and a mass fraction of the alicyclic hydrocarbon group contained in the polycarbonate polyol (a1) is 1 to 30 mass% relative to the combined mass of the active hydrogen component (A) and the organic isocyanate component (B).

4. The film as described in claim 1 , wherein the combined mass fraction of the Si atoms attributed to the alkoxy silyl group and/or the silanol group contained in the polyurethane resin (U) and the Si atoms attributed to the alkoxy silyl group and/or the silanol group contained in the compound (X) is 0.05 to 2.0 mass% relative to the combined mass of the active hydrogen component (A) and the organic isocyanate component (B).

5. The film as described in claim 1 , wherein the organic isocyanate component (B) comprises an alicyclic polyisocyanate (b 1) with a carbon number of 6 to 18and/or an aliphatic polyisocyanate (b2) with a carbon number of 4 to 22.

6. The film as described in claim 1 , wherein the organic isocyanate component (B) comprises isophorone diisocyanate and/or 4,4-dicyclohexyl methane diisocyanate.

Assignees

• Toray Industries
• Sanyo Chemical Ind Ltd

Inventors

• Minomo Katsuhiro
• Mori Kentaro
• Matsui Yosuke

Classifications

• B32B33/00

  Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class · CPC title

• C08G18/44

  Polycarbonates · CPC title

• C08G18/758

  containing two or more cycloaliphatic rings · CPC title

• C09J7/255

  Polyesters · CPC title

• C08G18/3228

  acyclic · CPC title