Multilayer film for decorative moldnig, polyurethane resin, and method for producing decorative molded body

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 that 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) that has an amino group, or a carboxyl group and/or a salt thereof.

1 .- 19 . (canceled) 
     
     
         20 . A multilayer film for decorative molding having a multilayer structure comprising a protective layer, a color layer and an adhesive layer arranged in this order, 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 that condition (1) and/or condition (2) are satisfied:
 (1): The polyurethane resin (U) is a polyurethane resin (U1) that has an alkoxysilyl group and/or a silanol group in a molecule,   (2): The protective layer contains a compound (X) that has a glycidyl ether group, and an alkoxysilyl group and/or a silanol group, and the polyurethane resin (U) is a polyurethane resin (U2) that has an amino group, or a carboxyl group and/or a salt thereof.   
     
     
         21 . The film as described in  claim 20 , wherein the active hydrogen component (A) contains a polycarbonate polyol (a1) having an alicyclic hydrocarbon group. 
     
     
         22 . The film as described in  claim 21 , wherein number average molecular weight of the polycarbonate polyol (a1) is 500 to 5,000 and 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). 
     
     
         23 . The film as described in  claim 20 , 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). 
     
     
         24 . The film as described in  claim 20 , wherein the organic isocyanate component (B) comprises an alicyclic polyisocyanate (b1) with a carbon number of 6 to 18 and/or an aliphatic polyisocyanate (b2) with a carbon number of 4 to 22. 
     
     
         25 . The film as described in  claim 20 , wherein the organic isocyanate component (B) comprises isophorone diisocyanate and/or 4,4-dicyclohexyl methane diisocyanate. 
     
     
         26 . A polyurethane resin for a multilayer film for decorative molding formed at least from an active hydrogen component (A) and an organic isocyanate component (B), having a polycarbonate skeleton with an alicyclic hydrocarbon group, and having an alkoxy silyl group and/or a silanol group. 
     
     
         27 . The polyurethane resin as described in  claim 26 , wherein the active hydrogen component (A) contains a polycarbonate polyol (a1) having an alicyclic hydrocarbon group. 
     
     
         28 . The polyurethane resin as described in  claim 27 , wherein number average molecular weight of the polycarbonate polyol (a1) is 500 to 5,000 and 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). 
     
     
         29 . The polyurethane resin as described in  claim 26 , wherein the mass fraction of the Si atoms attributed to the alkoxy silyl group and/or the silanol group contained in a polyurethane resin (U1) is 0.05 to 2.0 mass % relative to the combined mass of the active hydrogen component (A) and the organic isocyanate component (B). 
     
     
         30 . The polyurethane resin as described in  claim 26 , wherein the organic isocyanate component (B) comprises an alicyclic polyisocyanate (b1) with a carbon number of 6 to 18 and/or an aliphatic polyisocyanate (b2) with a carbon number of 4 to 22. 
     
     
         31 . The polyurethane resin as described in  claim 26 , wherein the organic isocyanate component (B) comprises isophorone diisocyanate and/or 4,4-dicyclohexyl methane diisocyanate. 
     
     
         32 . A polyurethane resin composition for a multilayer film for decorative molding, formed at least from an active hydrogen component (A) and an organic isocyanate component (B), having a polycarbonate skeleton with an alicyclic hydrocarbon group, containing a polyurethane resin (U2) having an amino group, or a carboxyl group and/or a salt thereof, and containing a compound (X) having a glycidyl ether group, and an alkoxy silyl group and/or a silanol group. 
     
     
         33 . The polyurethane resin composition as described in  claim 32 , wherein the active hydrogen component (A) contains a polycarbonate polyol (a1) having an alicyclic hydrocarbon group. 
     
     
         34 . The polyurethane resin composition as described in  claim 33 , wherein number average molecular weight of the polycarbonate polyol (a1) is 500 to 5,000 and 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). 
     
     
         35 . The polyurethane resin composition as described in  claim 32 , wherein the mass fraction of 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). 
     
     
         36 . The polyurethane resin composition as described in  claim 32 , wherein the organic isocyanate component (B) comprises an alicyclic polyisocyanate (b1) with a carbon number of 6 to 18 and/or an aliphatic polyisocyanate (b2) with a carbon number of 4 to 22. 
     
     
         37 . The polyurethane resin composition as described in  claim 32 , wherein the organic isocyanate component (B) comprises isophorone diisocyanate and/or 4,4-dicyclohexyl methane diisocyanate. 
     
     
         38 . A method of producing a decorative molded body comprising bonding a multilayer film for decorative molding onto a decorable object, wherein the multilayer film for decorative molding has a multilayer structure comprising a protective layer, a color layer and an adhesive layer arranged in this order, with a molding film disposed between either of the adjoining pairs of layers or on the opposite surface of the protective layer to the color layer, that the protective layer contains a polyurethane resin (U) formed at least from an active hydrogen component (A) and an organic isocyanate component (B) and has a polycarbonate skeleton with an alicyclic hydrocarbon group, and that condition (1) and/or condition (2) are satisfied:
 (1): The polyurethane resin (U) has an alkoxysilyl group and/or a silanol group in a molecule,   (2): The protective layer contains a compound (X) that has a glycidyl ether group, and an alkoxysilyl group and/or a silanol group, and the polyurethane resin (U) has a carboxyl group and/or a salt thereof.