(Meth)acrylic acid alkyl ester polymer and use thereof
AssigneeSoken Chemical & Engineering Co., Ltd.
InventorsYasuhiro Awatsu, Naoki Shimada, Mitsuo Senoo
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Abstract
Provided are a novel acrylic polymer that has moderate crosslinking reactivity and is suitable for sealant applications and a sealant using the polymer. The (meth)acrylic acid alkyl ester polymer according to the invention has a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) method of 30,000 to 150,000 and a number average molecular weight (Mn) of less than 20,000 and has 1.1 to 3.0 methyldimethoxysilyl groups, more than 0.5 methyldimethoxysilyl groups at side chains of a molecular chain, and more than 0.5 methyldimethoxysilyl groups at molecular chain terminals, per one molecule of the polymer.
Claims16
A (meth)acrylic acid alkyl ester polymer that has a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) method of 30,000 to 150,000 and a number average molecular weight (Mn) of 2500 or more and less than 19,000 and that has 1.1 to 3.0 methyldimethoxysilyl groups, 0.55 to 1.5 methyldimethoxysilyl groups at side chains of a molecular chain, and more than 0.5 methyldimethoxysilyl groups at molecular chain terminals, per one molecule of the polymer.
Dependencies are inferred from the claim text.