Polymers and curable compositions

Abstract

The present invention is concerned with a vinyl polymer having at least one group of the general formula (1) per molecule at the molecular chain terminus. -Z-R—CR 1 ═CR 2 R 3   ( 1 ) wherein Z represents an oxygen atom, a sulfur atom, a group of the formula NR′, R′ represents a univalent hydrocarbon group containing 1 to 20 carbon atoms, or a bivalent organic group containing 1 to 20 carbon atoms, and R represents a carbonyl group, a direct bond or a bivalent organic group containing 1 to 20 carbon atoms; R 1 and R 2 are the same or different and each represents a hydrogen atom or a univalent organic group group containing 1 to 20 carbon atoms, and R 3 represents an organic group containg 1 to 20 carbon atoms. The present invention is further concerned with a curable composition comprising the above vinyl polymer.

1 - 25 . (canceled)  
     
     
         26 . A curable composition comprising a vinyl polymer having at least one group of the general formula (1) at a molecular chain terminus; 
         -Z-R—CR 1 ═CR 2 R 3   (1) wherein Z represents an oxygen atom, a sulfur atom, a group of the formula NR′, R′ represents a univalent hydrocarbon group containing 1 to 20 carbon atoms, or a bivalent organic group containing 1 to 20 carbon atoms; R represents a carbonyl group, a direct bond or a bivalent organic group containing 1 to 20 carbon atoms; R 1  and R 2  are the same or different and each represents a hydrogen atom or a univalent organic group group containing 1 to 20 carbon atoms; R 3  represents a univalent organic group containing 1 to 20 carbon atoms;    which is obtainable by reacting a vinyl polymer (II) having a silanol group at at least one molecular chain terminus with a silicon compound of the general formula(6);     X′SiR″ 2 -G-C(O)CR 1 ═CR 2 R 3   (6)   wherein R 1  and R 2  are the same of different and each represents a hydrogen atom or a univalent organic group containing 1 to 20 carbon atoms; R 3  represents a univalent organic group containing 1 to 20 carbon atoms; R″ represents a hydrocarbon group containing 1 to 14 carbon atoms or a halogenated hydrocarbon group containing 1 to 10 carbon atoms; the plurality of R″ may be the same or different; X′ represents a hydrolyzable group; G represents an oxyalkylene group containing 1 to 4 carbon atoms; and    wherein G in the general formula (6) is —CH 2 O—, —CH 2 CH 2 O—, —CH 2 CH 2 CH 2 O— or —CH 2 CH(CH 3 )CH 2 O—.    
     
     
         27 . The curable composition according to  claim 26  which comprises a photopolymerization initiator and is capable of curing on exposure to light or an electron beam.  
     
     
         28 . The curable composition according to  claim 26  which comprises a thermal polymerization initiator and is capable of curing on heating.  
     
     
         29 . The curable composition according to  claim 26  comprising a monomer and/or oligomer having a radical-polymerizable group.  
     
     
         30 . The curable composition according to  claim 29  wherein the radical-polymerizable group is an acrylic functional group.  
     
     
         31 . The curable composition according to  claim 30  wherein the monomer and/or oligomer having said acrylic functional group has a number average molecular weight of not more than 2000.  
     
     
         32 . The curable composition according to  claim 27  comprising a monomer and/or oligomer having a radical-polymerizable group.  
     
     
         33 . The curable composition according to  claim 28  comprising a monomer and/or oligomer having a radical-polymerizable group.  
     
     
         34 . The curable composition according to  claim 26   wherein the silanol group of the vinyl polymer (II) is represented by the general formula (7); —[Si(R 5 ) 2−b (OH) b O] m —Si(R 6 ) 3−a (OH) a wherein R 5  and R 6  are the same or different and each represents an alkyl group containing 1 to 20 carbon atoms, an aryl group containing 6 to 20 carbon atoms, an aralkyl group containing 7 to 20 carbon atoms, or a triorganosiloxy group of the formula (R′) 3 Si—, where R′ represents a univalent hydrocarbon group containing 1 to 20 carbon atoms and the three R′ groups may be the same or different); when R 5  or R 6  occurs in the number of 2 or more, the plurality of groups may be the same or different; when R 5  or R 6  occurs in the number of 2 or more, the plurality of groups may be the same or different; a represents 0, 1, 2 or 3; b represents 0, 1 or 2; m is an integer of 0 to 19; with the condition that the relation of a+mb≧1 is satisfied.    
     
     
         35 . The curable composition according to  claim 34  wherein m in the general formula (7) is equal to 0.  
     
     
         36 . The curable composition according to  claim 26  wherein the vinyl polymer (II) is obtainable by subjecting a vinyl polymer having at least one alkyenyl group at a terminus to hydrosilylation reaction with a silicon compound having both a hydrolyzable group linked to a silicon atom and a hydrosilyl group and then hydrolyzing the hydrolyzable group linked to the silicon atom for conversion to a silanol group.  
     
     
         37 . The curable composition according to  claim 36  wherein the silicon compound having both a hydrolyzable group linked to a silicon atom and a hydrosilyl group is chlorodimethylsilane.  
     
     
         38 . A new curable composition comprising a vinyl polymer having at least one group of the general formula (1′) at a molecular chain terminus; 
         Z-R—CR 1 ═CR 2 R 3   
       wherein Z represents an oxygen atom, a sulfur atom, a bivalent organic group containing 1 to 20 carbon atoms, or a group of the formula NR′, R′ represents an univalent hydrocarbon group containing 1 to 20 carbon atoms; R represents a carbonyl group, a direct bond or a bivalent organic group containing 1 to 20 carbon atoms; R 1  and R 2  are the same or different and each represents a hydrogen atom or a univalent organic group containing 1 to 20 carbon atoms; R 3  represents a univalent organic group-containing 1 to 20 carbon atoms.  
     
     
         39 . The curable composition according to  claim 38  wherein R 3  in the general formula (1) comprises a carbon atom, a hydrogen atom and 0 to 2 oxygen atoms.  
     
     
         40 . The curable composition according to  claim 39  wherein R 3  in the general formula (1) is a hydrocarbon group.  
     
     
         41 . The curable composition according to  claim 38  wherein the main chain is a (meth)acrylic polymer.  
     
     
         42 . The curable composition according to  claim 38  wherein the main chain is an acrylate polymer.  
     
     
         43 . The curable composition according to  claim 38  wherein the main chain is a styrenic polymer.  
     
     
         44 . The curable composition according to  claim 38  wherein the main chain is produced by living radical polymerization.  
     
     
         45 . The curable composition according to  claim 38  wherein the main chain is produced by atom transfer radical polymerization.