| abstract |
The present invention provides an acrylic block copolymer which exhibits excellent adhesion, cohesion, retention, viscosity, and hot melt coating properties when used in an adhesive composition, and a binder containing the block copolymer Agent composition.nThe present invention is an acrylic block copolymer (I) having at least two polymer blocks (A) comprising methacrylate units and at least one polymer block (B) comprising acrylate units, It has a (A)-(B)-(A) block structure and a weight average molecular weight (Mw) of 30,000 to 100,000, and a melt viscosity at 100 ° C measured by a Brookfield viscometer is 100,000 mPa·s or less. |