Patent ID: 7342076

Claim:
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 containing 1 to 20 carbon atoms; R 3 represents a univalent organic group containing 1 to 20 carbon atoms; which is obtained 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 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; 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—.