Resin composition and process for producing the same
View Patent ↗By further incorporating a reductant into a composition including an oxyalkylene polymer prepared by polymerization in the presence of a cobalt-containing double metal cyanide complex catalyst; and an acrylic polymer prepared by radical polymerization in the presence of a mercapto group-containing compound, a resin composition in which excessive coloration is prevented and that is suitably used for an adhesive or the like is prepared.
1. A resin composition comprising:
an oxyalkylene polymer (A) containing a hydrolyzable silicon group and being prepared by ring-opening polymerization of an alkylene oxide using a cobalt-containing double metal cyanide complex catalyst in the presence of a compound that serves as an initiator and that has an active hydrogen-containing group that can react with the alkylene oxide;
an acrylic polymer and/or a mercapto group-containing compound (B), the acrylic polymer containing a hydrolyzable silicon group and being prepared by radical polymerization of a monomer including an alkyl (meth)acrylate containing an alkyl group having 1 to 30 carbon atoms in the presence of a mercapto group-containing compound; and
a reductant (C) which is at least one selected from ascorbic acid and derivatives thereof.
2. A process for producing the resin composition according to claim 1 , the process comprising: mixing (A) and (B) in the presence of (C).
3. The resin composition according to claim 1 , wherein the oxyalkylene polymer (A) and the acrylic polymer (B) each contain a crosslinkable functional group substantially consisting of the hydrolyzable silicon group.
4. The resin composition according to claim 3 , which is curable by a condensation catalyst.
5. The resin composition according to claim 1 , which is curable by a condensation catalyst.
6. The resin composition according to claim 4 ,
wherein the condensation catalyst is selected from the group consisting of an organic titanium compound; an organic tin compound; organic aluminum compounds; organic zirconium compounds; organic bismuth compounds; amine compounds; organic acids; and compounds prepared by reaction of an organic acid and an amine compound.
7. A method of preventing coloration of a resin composition comprising
mixing an oxyalkylene polymer (A) containing a hydrolyzable silicon group and being prepared by ring-opening polymerization of an alkylene oxide using a cobalt-containing double metal cyanide complex catalyst in the presence of a compound that serves as an initiator and that has an active hydrogen-containing group that can react with the alkylene oxide and
an acrylic polymer and/or a mercapto-containing compound (B), the acrylic polymer containing a hydrolyzable silicon group and being prepared by radical polymerization of a monomer including an alkyl(meth)acrylate containing an alkyl group having 1 to 30 carbon atoms in the presence of a mercapto group-containing compound
in the presence of a reductant (C) which is at least one selected from ascorbic acid and derivatives thereof.