| 摘要 |
PROBLEM TO BE SOLVED: To provide an acrylic copolymer capable of obtaining an acrylic adhesive composition having less decrease in adhesive strength after standing under a high temperature and a high humidity. SOLUTION: This method for producing the copolymer obtained by based on the 100 wt.% total of monomer components, polymerizing 53 to 88 wt.% alkyl acrylate, 10 to 35 wt.% acrylonitrile and 2 to 12 wt.% glycidyl methacrylate is provided by polymerizing the total amount of the acrylic acid alkyl ester, the 25 to 45% of the total amount of the acrylonitrile and the 75 to 55% of the glycidyl methacrylate in advance, and when the polymerization rate of the above polymerization becomes 20 to 50%, supplying the rest of 75 to 55% of the acrylonitrile and the rest of 25 to 45% of the glycidyl methacrylate to perform the copolymerization. COPYRIGHT: (C)2010,JPO&INPIT
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