| abstract |
(57) [Summary] [Structure] A (meth) acrylic acid alkyl ester containing 50% by weight or more of methyl methacrylate and having an alkyl group having 1 to 12 carbon atoms and, if necessary, other vinyl-based monoesters. The number average molecular weight obtained by copolymerizing a monomer is 500 to 30. 00, a tackifying resin composition having a softening point of 20 ° C to 130 ° C. [Effect] This tackifying resin composition has excellent weather resistance, Even when used outdoors, the adhesive performance does not deteriorate. |