Patent ID: 7439308

Claim:
A method for producing a (meth)acrylic polymer having crosslinkable silyl groups at the termini, comprising the steps of: (i) preparing (A) an alkenyl-terminated (meth)acrylic polymer containing halogen groups by atom transfer radical polymerization; (ii) heating the alkenyl-terminated (meth)acrylic polymer to a temperature in the range of 170° C. to 250° C. without an adsorbent to remove said halogen groups from the alkenyl-terminated (meth)acrylic polymer; (iii) separating insoluble components contained in the dehalogenated alkenyl-terminated (meth)acrylic polymer; and (iv) mixing the alkenyl-terminated (meth)acrylic polymer (A) obtained by steps (i) to (iii), having 10 mg or less of a transition metal per kilogram of the polymer (A) and 500 mg or less of a halogen per kilogram of the polymer (A), a hydrosilane compound having a crosslinkable silyl group (B), and a platinum catalyst (C) to carry out hydrosilylation reaction.