Polar group-containing olefin copolymer, multinary polar olefin copolymer, olefin resin composition, and adhesive material, laminate, and other application products using same

Abstract

The present invention relates to a polar group-containing olefin copolymer (A′) which is produced through polymerization using a transition metal catalyst, which has a weight-average molecular weight falling within a specific range and which contains a polar group-containing monomer within a specific range; a multinary polar olefin copolymer (A″) indispensably containing a polar monomer component that has a norbornene skeleton and a carboxyl group or an acid anhydride group and having three or more types of monomer units; and a resin composition (C) containing a specific amount of a polar group-containing olefin copolymer (A) and a specific amount of an olefin resin (B).

1 : A polar group-comprising olefin copolymer obtained by copolymerization of at least one nonpolar monomer selected from the group consisting of ethylene and α-olefins having from 3 to 20 carbon atoms, and a polar group-comprising monomer comprising a carboxyl group or a dicarboxylic acid anhydride group, in the presence of a transition metal catalyst, wherein the olefin copolymer is a random copolymer and satisfies the following requirements 1) and 2):
 1) an amount of structural unit derived from the polar group-comprising monomer in the olefin copolymer is from 0.001 to 10 mol %; and 
 2) a weight-average molecular weight (Mw) of the copolymer, as obtained through gel permeation chromatography (GPC), is from 45,000 to 1,000,000. 
 
     
     
         2 : The olefin copolymer according to  claim 1 , wherein an amount of structural unit derived from the polar group-comprising monomer contained inside the molecular chain is larger than an amount of structural unit derived from the polar group-comprising monomer contained at an end of the molecular chain. 
     
     
         3 : The olefin copolymer according to  claim 1 , wherein a ratio (Mw/Mn) of the weight-average molecular weight (Mw) to a number-average molecular weight (Mn), as obtained through gel permeation chromatography, falls within a range of from 1.5 to 3.5. 
     
     
         4 : The olefin copolymer according to  claim 1 , wherein a melting point, as represented by a temperature at a position of maximum peak in the absorption curve measured with a differential scanning calorimeter, is from 50° C. to 140° C. 
     
     
         5 : The olefin copolymer according to  claim 1 , wherein the transition metal catalyst is a transition metal catalyst comprising a chelating ligand and a metal of Groups 5 to 11. 
     
     
         6 : The olefin copolymer according to  claim 1 , wherein the transition metal catalyst is a transition metal catalyst where a triaryl phosphine or triarylarsine compound is coordinated with a palladium or nickel metal. 
     
     
         7 : The olefin copolymer according to  claim 1 , wherein the polar group-comprising monomer comprises a dicarboxylic acid anhydride group. 
     
     
         8 : A multinary polar olefin copolymer comprising:
 at least one nonpolar monomer (X1) unit selected from the group consisting of ethylene and α-olefins having from 3 to 10 carbon atoms;   a polar monomer (Z1) unit selected from compounds of formula (1); and   optionally a polar monomer (Z2) unit selected from compounds of formula (2), wherein types of the monomer units for X1, Z1 and Z2 are three or more:   
       
         
           
           
               
               
           
         
         wherein, 
         in formula (1), T1 and T2 are each independently a carboxyl group, or T1 and T2 bond to each other to form a cyclic structure and represent are an acid anhydride group, and 
         in formula (2), T3 is a substituent selected from the group consisting of a hydrocarbon group substituted with a hydroxyl group and having from 1 to 10 carbon atoms, a hydrocarbon group substituted with an alkoxy group with from 1 to 10 carbon atoms and having from 2 to 20 carbon atoms, a hydrocarbon group substituted with an ester group with from 2 to 10 carbon atoms and having from 3 to 20 carbon atoms, a hydrocarbon group substituted with a silyl group with from 3 to 18 carbon atoms and having from 4 to 20 carbon atoms, a hydrocarbon group substituted with a halogen atom and having from 1 to 10 carbon atoms, an alkoxy group having from 1 to 10 carbon atoms, an aryloxy group having from 6 to 20 carbon atoms, a carboxyl group, an ester group having from 2 to 10 carbon atoms, an amino group, a substituted amino group having from 1 to 12 carbon atoms, a silyl group having from 3 to 18 carbon atoms, and a halogen. 
       
     
     
         9 : The olefin copolymer according to  claim 8 , wherein a total amount of the monomer units derived from the monomer Z1 and the monomer Z is from 0.001 to 10.000 mol %. 
     
     
         10 : The olefin copolymer according to  claim 8 , which has a methyl branching degree, as calculated through  13 C-NMR, of 5.0 or less, relative to 1,000 carbons in the multinary polar olefin copolymer. 
     
     
         11 : The olefin copolymer according to  claim 8 , wherein the monomer X1 is one of ethylene or α-olefin. 
     
     
         12 : The olefin copolymer according to  claim 8 , which comprises the monomer Z2 as an essential monomer unit, in which, in formula (2), T3 is an ester having from 2 to 10 carbon atoms. 
     
     
         13 : The olefin copolymer according to  claim 8 , wherein a molar ratio of the monomer Z2 to the monomer Z1 in the copolymer is from 0.001 to 10.000. 
     
     
         14 : The olefin copolymer according to  claim 8 , wherein a ratio of a weight-average molecular weight (Mw) to a number-average molecular weight (Mn), as obtained through gel permeation chromatography, falls within a range of from 1.5 to 3.5. 
     
     
         15 : The olefin copolymer according to  claim 8 , wherein a melting point, as represented by a temperature at a position of maximum peak in the absorption curve measured with a differential scanning calorimeter, is from 50° C. to 140° C. 
     
     
         16 : The olefin copolymer according to  claim 8 , wherein the polar group-comprising olefin copolymer (A) is produced through polymerization in the presence of a transition metal catalyst comprising a chelating ligand and a metal of Groups 5 to 11. 
     
     
         17 : The olefin copolymer according to  claim 16 , wherein the transition metal catalyst is a transition metal catalyst where a triaryl phosphine or triarylarsine compound is coordinated with a palladium or nickel metal. 
     
     
         18 : The olefin copolymer according to  claim 17 , wherein at least one of the triaryl phosphine or triarylarsine compound has a phenyl group substituted with a secondary or tertiary alkyl group. 
     
     
         19 : An olefin resin composition (C) comprising: a polar group-comprising olefin copolymer (A) obtained through copolymerization of:
 at least one nonpolar monomer selected from the group consisting of ethylene and α-olefins having from 3 to 20 carbon atoms, and a polar group-comprising monomer comprising a carboxyl group or a dicarboxylic acid anhydride group, in the presence of a transition metal catalyst; and   an olefin resin (B) other than the olefin copolymer (A),   wherein an amount of the olefin resin (B) is from 25 to 100,000 parts by weight relative to 100 parts by weight of the olefin copolymer (A).   
     
     
         20 : The composition according to  claim 19 , wherein the olefin copolymer (A) is a random copolymer of an ethylene or an α-olefin having from 3 to 20 carbon atoms and a polar group-comprising monomer comprising a carboxyl group or a dicarboxylic acid anhydride group, and in the copolymer, an amount of structural unit derived from the polar group-comprising monomer contained inside the molecular chain is larger than an amount of structural unit derived from the polar group-comprising monomer contained at an end of the molecular chain. 
     
     
         21 : The composition according to  claim 19 , wherein a ratio (Mw/Mn) of a weight-average molecular weight (Mw) to a number-average molecular weight (Mn) of the polar group-comprising olefin copolymer (A), as obtained through gel permeation chromatography, falls within a range of from 1.5 to 3.5. 
     
     
         22 : The composition according to  claim 19 , wherein a melting point of the polar group comprising olefin copolymer (A), as represented by a temperature at a position of maximum peak in the absorption curve measured with a differential scanning calorimeter, falls within a range of from 50° C. to 140° C. 
     
     
         23 : The composition according to  claim 19 , wherein the polar group-comprising olefin copolymer (A) is produced through polymerization in the presence of a transition metal catalyst comprising a chelating ligand and a metal of Groups 5 to 11. 
     
     
         24 : The composition according to  claim 19 , wherein the polar group-comprising olefin copolymer (A) is one produced through polymerization in the presence of a transition metal catalyst where a triaryl phosphine or triarylarsine compound is coordinated with a palladium or nickel metal. 
     
     
         25 : The composition according to  claim 19 , wherein the olefin resin (B) is one obtained through polymerization of at least one monomer selected from the group consisting of ethylene and an α-olefin having from 3 to 20 carbon atoms. 
     
     
         26 : The olefin resin composition according to  claim 19 , wherein the polar group-comprising monomer contains a dicarboxylic acid anhydride group. 
     
     
         27 : An adhesive material comprising the polar group-comprising olefin copolymer according to  claim 1 . 
     
     
         28 : A laminate comprising: a layer comprising the polar group-comprising olefin copolymer according to  claim 1 ; and a substrate layer. 
     
     
         29 : The laminate according to  claim 28 , wherein the substrate layer comprises at least one selected from the group consisting of an olefin resin, a high-polar thermoplastic resin, a metal, a vapor-deposited film of an inorganic oxide, a paper, a cellophane, a woven fabric and a nonwoven fabric. 
     
     
         30 : A laminate produced by laminating a laminating material comprising the polar group-comprising olefin copolymer according to  claim 1 , with a substrate layer. 
     
     
         31 : A multilayer coextrusion-molded product, comprising: a layer comprising the polar group-comprising olefin copolymer according to  claim 1 ; and a substrate layer. 
     
     
         32 : The product according to  claim 31 , wherein the product is a multilayer film, a multilayer blow-molded product, a multilayer tubular-molded product, or a multilayer sheet. 
     
     
         33 : An injection-molded product comprising the polar group-comprising olefin copolymer according to  claim 1 . 
     
     
         34 : A complexed injection-molded product obtained by injection-molding and complexing a substrate, and a member comprising the polar group-comprising olefin copolymer according to  claim 1 . 
     
     
         35 : A polar group-comprising olefin copolymer-coated metal member, wherein a metal is coated with the polar group-comprising olefin copolymer according to  claim 1 .