公开(公告)号：US20220372271A1

公开(公告)日：2022-11-24

申请号：US17879046

申请日：2022-08-02

Applicant: KANEKA CORPORATION

Inventor： Kazuhiko Hirabayashi ,  Jiro Okai ,  Taisuke Sasaki ,  Kenichi Yoshihashi

IPC: C08L53/00 ,  C09J153/00 ,  C09K3/10

Abstract: A composition with improved storage viscosity is provided. The composition contains a (meth)acrylic-based copolymer (A′) and an epoxy compound (C). A molecule of the (meth)acrylic-based copolymer (A′) includes an XY diblock structure or an XYX triblock structure therein. A number of repeating units which are derived from a (meth)acrylic ester monomer having an alkoxysilyl group and are included in an X block is 1.0 or more on average; an amount of repeating units which are derived from a (meth)acrylic ester monomer having an alkoxysilyl group and are included in a Y block is 0% by weight to 3% by weight, with respect to a weight of all repeating units included in the Y block. A molecular weight distribution (Mw/Mn) of the (meth)acrylic-based copolymer (A′) is 1.8 or less.