| 摘要 |
PURPOSE:An aqueous coating film effective in preventing moisture condensation in rooms, defrosting of glass, etc., having improved adhesivity against change in temperature, comprising a copolymer of a specific (meth)acrylamide derivative and an alpha,beta-unsaturated carboxylic acid, etc. CONSTITUTION:The aimed aqueous coating film comprising (A) 1mol one or more monomers (e.g., N-acryloylpyrrolidine, etc.,) of (meth)acrylamide derivatives shown by formula I (R1 is H or methyl; R2 is H, methyl or ethyl; R3 is methyl, ethyl or propyl) or formula II [R1 is H or methyl; A is -(CH2)n- and n is 4-6 or -(CH2)2-O-(CH2)2-], (B) 0.005-1.25mol alpha,beta-unsaturated carboxylic acid and, if necessary, (C) preferably another copolymerizable monomer.
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