Functional groups-terminated vinyl polymers
AssigneeKaneka Corporation
InventorsYoshiki Nakagawa, Kenichi Kitano, Masato Kusakabe
Life of this patent
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Abstract
A vinyl polymer which has at least one terminal functional group per molecule and has a ratio of weight average molecular weight to number average molecular weight of less than 1.8 as determined by gel permeation chromatography, said terminal functional group being a crosslinking silyl group, an alkenyl group, or a hydroxyl group. Curable compositions containing this vinyl polymer is easy to handle.
Claims8
A vinyl polymer which has 1.2 to 4 terminal functional group per molecule and has a ratio of weight average molecular weight to number average molecular weight of less than 1.8 as determined by gel permeation chromatography,
- said terminal functional group being-an alkenyl group of the general formula (3), (4), (5), (6), or (7) shown below
- H2C═C(R4)—R5— (3)
- H2C═C(R4)—R5—O— (4)
- H2C═C(R4)—R5—OC(O)— (5)
- H2C═C(R4)—R5—C(O)O— (6)
- H2C═C(R4)—R5—OC(O)O— (7)
- wherein R4 represents a hydrogen atom or a methyl group and R5 represents a direct bond, or an alkylene group containing 1 to 20 carbon atoms, an arylene group containing 6 to 20 carbon atoms or an aralkylene group containing 7 to 20 carbon atoms, which may contain one or more ether bonds, with the proviso that R5 of the general formula (3) represents an alkylene group containing 1 to 20 carbon atoms, an arylene group containing 6 to 20 carbon atoms or an aralkylene group containing 7 to 20 carbon atoms, which may contain one or more ether bonds.
Dependencies are inferred from the claim text.