Acrylic resin composition

Abstract

An acrylic resin composition comprising the following acrylic resins (1) and (2): acrylic resin (1): an acrylic resin containing a structural unit derived from a monomer (a) (structural unit (a)) and a structural unit derived from a monomer (b) (structural unit (b)); acrylic resin (2): an acrylic resin having a molecular weight of 1,100,000 to 1,500,000, and containing the structural unit (a) as the main component and a structural unit derived from a monomer (c) (structural unit (c)) and substantially not containing the structural unit (b); (a): a (meth)acrylate of the formula (A) (wherein, R 1 represents a hydrogen atom or methyl group, R 2 represents an alkyl group having 1 to 14 carbon atoms or an aralkyl group having 1 to 14 carbon atoms, and a hydrogen atom in the alkyl group R 2 or a hydrogen atom in the aralkyl group R 2 may be substituted with an alkoxy group having 1 to 10 carbon atoms.), (b): a monomer containing an olefinic double bond in the molecule and at least one 5- or more-membered heterocyclic group in the molecule, (c): a monomer not containing 5- or more-membered heterocyclic group and containing one olefinic double bond and at least one polar functional group selected from the group consisting of a carboxyl group, hydroxyl group, amide group, amino group, epoxy group, oxetanyl group, aldehyde group and isocyanate group in the molecule.

1 . An acrylic resin composition comprising the following acrylic resins (1) and (2): 
 acrylic resin (1): an acrylic resin containing a structural unit derived from a monomer (a) (structural unit (a)) and a structural unit derived from a monomer (b) (structural unit (b));    acrylic resin (2): an acrylic resin having a molecular weight of 1,100,000 to 1,500,000, and containing the structural unit (a) as the main component and a structural unit derived from a monomer (c) (structural unit (c)) and substantially not containing the structural unit (b);    (a): a (meth)acrylate of the formula (A)                          (wherein, R 1  represents a hydrogen atom or methyl group, R 2  represents an alkyl group having 1 to 14 carbon atoms or an aralkyl group having 1 to 14 carbon atoms, and a hydrogen atom in the alkyl group R 2  or a hydrogen atom in the aralkyl group R 2  may be substituted with an alkoxy group having 1 to 10 carbon atoms.),    (b): a monomer containing an olefinic double bond in the molecule and at least one 5- or more-membered heterocyclic group in the molecule,    (c): a monomer not containing 5- or more-membered heterocyclic group and containing one olefinic double bond and at least one polar functional group selected from the group consisting of a carboxyl group, hydroxyl group, amide group, amino group, epoxy group, oxetanyl group, aldehyde group and isocyanate group in the molecule.    
     
     
         2 . The composition according to  claim 1 , wherein the content of the structural unit (a) in the acrylic resin (1) is from 60 to 99.9 parts by weight based on 100 parts by weight of the acrylic resin (1).  
     
     
         3 . The composition according to  claim 1 , wherein the content of the structural unit (b) in the acrylic resin (1) is from 0.1 to 40 parts by weight based on 100 parts by weight of the acrylic resin (1).  
     
     
         4 . The composition according to  claim 1 , wherein the monomer (b) is N-vinylpyrrolidone and/or vinylcaprolactam.  
     
     
         5 . The composition according to  claim 1 , wherein the acrylic resin (1) is an acrylic resin further containing the structural unit (c).  
     
     
         6 . The composition according to  claim 1 , wherein the amount of the acrylic resin (1) is 1 to 50 parts by weight based on 100 parts by weight of the total amount of the acrylic resin (1) and the acrylic resin (2).  
     
     
         7 . An adhesive comprising the composition according to  claim 1  and a cross-linking agent and/or silane-based compound.  
     
     
         8 . An optical laminated film laminating an adhesive layer composed of the adhesive according to  claim 7  on both surfaces or one surface of an optical film.  
     
     
         9 . The optical laminated film according to  claim 8 , wherein the optical film is a polarizing film and/or phase retardation film.  
     
     
         10 . The optical laminated film according to  claim 8 , wherein the optical film is an optical film further having an acetylcellulose-based film as a release film.  
     
     
         11 . The optical laminated film according to  claim 8 , wherein a release film is further laminated on the adhesive layer of the optical laminated film.  
     
     
         12 . An optical laminate obtained by laminating a glass base material on the adhesive layer of the optical laminated film according to any of  claims 8  to  10 .  
     
     
         13 . An optical laminate obtained by peeling the release film from the optical laminated film according to  claim 11 , then, laminating a glass base material on the adhesive layer of the optical laminated film.  
     
     
         14 . An optical laminate obtained by peeling the optical laminated film from the optical laminate according to  claim 12 , then, laminating again the optical laminated film on the resulted glass base material.