Method for producing (meth) acrylic acid ester polymer
There is provided a (meth) acrylic ester polymer having A silicon-containing functions group capable of crosslinking Through formation of a siloxane bond, or a composition comprising the polymer, which does not contain any environment-hostile aromatic compound derived from a solvent, and of which TVOC (total volatile organic compound) emission is less than 1,500·g/m 3 . There is further provided a method for producing a polymer comprising a (meth) acrylic ester monomer unit as a molecular chain and having a silicon-containing functional group capable of crosslinking through formation of a siloxane bond, which comprises polymerizing a (meth)acrylic ester monomer using a solvent not containing any aromatic solvents as a polymerization solvent.
1 . A method for producing a polymer comprising a (meth)acrylic ester monomer unit as a molecular chain and having a silicon-containing functional group capable of crosslinking through formation of a siloxane bond,
which comprises polymerizing the (meth)acrylic ester monomer using a solvent not containing any aromatic solvents as a polymerization solvent.
2 . The method according to claim 1 ,
wherein the polymerization solvent is one or more members selected from the group consisting of alcohol solvents and carbonyl group-containing solvents.
3 . The method according to claim 2 ,
wherein the polymerization solvent is one or more members selected from the group consisting of aliphatic alcohols containing 3 or 4 carbon atoms and dialkyl carbonates.
4 . The method according to claim 1 ,
wherein the (meth)acrylic ester monomer is a mixture of
(1) an alkyl (meth)acrylate monomer containing an alkyl group of 1 to 8 carbon atoms and
(2) an alkyl (meth)acrylate monomer containing an alkyl group containing 10 or more carbon atoms.
5 . A method for producing a polymer comprising a (meth)acrylic ester monomer unit as a molecular chain and having a silicon-containing functional group capable of crosslinking through formation of a siloxane bond,
which comprises polymerizing the (meth)acrylic ester monomer using a polymerization solvent containing one or more members selected from the group consisting of aliphatic alcohols containing 3 or 4 carbon atoms and dialkyl carbonates but not containing an aromatic compound in a concentration over 1,000 ppm based on the polymer.
6 . The method according to claim 1 ,
wherein the polymerization solvent is 2-propyl alcohol.
7 . The method according to claim 1 ,
wherein the polymerization solvent is dimethyl carbonate.
8 . The method according to claim 1 ,
wherein 2,2′-azobis(dimethylvaleronitrile) is used as a polymerization initiator.
9 - 17 . (canceled).
18 . The method according to claim 2 ,
wherein the (meth)acrylic ester monomer is a mixture of
(1) an alkyl (meth)acrylate monomer containing an alkyl group of 1 to 8 carbon atoms and
(2) an alkyl (meth)acrylate monomer containing an alkyl group containing 10 or more carbon atoms.
19 . The method according to claim 3 ,
wherein the (meth)acrylic ester monomer is a mixture of
(1) an alkyl (meth)acrylate monomer containing an alkyl group of 1 to 8 carbon atoms and
(2) an alkyl (meth)acrylate monomer containing an alkyl group containing 10 or more carbon atoms.
20 . The method according to claim 5 ,
wherein 2,2′-azobis(dimethylvaleronitrile) is used as a polymerization initiator.