Adhesive resin composition and laminate thereof and production process of laminate

Abstract

An adhesive resin composition comprising: (A) At least one component selected from the group consisting of (i) polyolefins having a melt flow rate of 0.1 to 30 g/10 min and (ii) olefinic polymers having at least one functional group capable of reacting with an epoxy group; and (B) an epoxy compound having at least two epoxy groups in the molecule and having a number average molecular weight of 3000 or less, wherein the ratio of the component (B) to the total weight of the components (A) and (B) is 0.01 to 5% by weight, and a laminate of (a) a layer composed of the above-mentioned adhesive resin composition and a substrate contacted therewith.

1 . An adhesive resin composition comprising: 
 (A) At least one component selected from the group consisting of (i) polyolefins having a melt flow rate of 0.1 to 30 g/10 min and (ii) olefin polymers having at least one functional group capable of reacting with an epoxy group; and    (B) an epoxy compound having at least two epoxy groups in the molecule and having a number average molecular weight of 3000 or less, the ratio of the component (B) to the total weight of the components (A) and (B) being 0.01 to 5% by weight.    
     
     
         2 . An adhesive resin composition as claimed in  claim 1 , wherein the ratio of the component (A) (ii) to the total amount of the components (A) and (B) is 0 to 70% by weight.  
     
     
         3 . An adhesive resin composition as claimed in  claim 1 , wherein the polyolefin (A) (i) is a branched low density polyethylene.  
     
     
         4 . An adhesive resin composition as claimed in  claim 1 , wherein the olefin polymer (A) (ii) has at least one functional group selected from the group consisting of acid anhydride groups, carboxyl groups and carboxylic acid metal salts in the molecule.  
     
     
         5 . An adhesive resin composition as claimed in  claim 1 , wherein the olefinic polymer (B) (ii) is ethylene-maleic anhydride copolymer or ethylene-maleic anhydride-(meth)acrylic acid copolymer.  
     
     
         6 . An adhesive resin composition as claimed in  claim 1 , wherein the epoxy compound is an epoxidized plant oil.  
     
     
         7 . A laminate comprising at least two layers of (a) a layer composed of an adhesive resin composition according to  claim 1  and (b) a substrate directly contacted with said layer (a).  
     
     
         8 . A laminate as claimed in  claim 7 , wherein the substrate is a film or sheet composed of a polyester, polyamide or aluminum.  
     
     
         9 . A process for producing a laminate according to  claim 7 , wherein the laminate is produced by extrusion lamination, thermal adhesion or calendering.