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    • 37. 发明专利
    • PREPARATION OF POLYMER AND COPOLYMER
    • JPH107724A
    • 1998-01-13
    • JP6573497
    • 1997-03-19
    • BASF AG
    • TROPSCH JUERGENBREITENBACH JOERG
    • C08F2/18C08F8/06
    • PROBLEM TO BE SOLVED: To obtain a percarboxylated polymer effectively by adding hydrogen peroxide to a suspension of a polymer essentially consisting of structural units derived from a monoolefinically unsaturated dicarboxylic anhydride in an inert diluent. SOLUTION: A percarboxylated polymer (B) is prepared by adding hydrogen peroxide to a suspension of a polymer essentially consisting of structural units derived from a monoolefinically unsaturated carboxylic acid anhydride (A) in an inert diluent. A is a cyclic dicarboxylic acid, more particularly maleic, citraconic or glutaconic anhydride which may be substituted with an alkyl or a phenyl. The monoetheylenically comonomer combined therewith is suitably N-vinylpyrrolidone, an N-vinyllactam, N-vinylcaprolactam or the like and also may be an N-vinylamide or a vinyl ester. The source of hydrogen peroxide is advantageously a 30-60wt.% aqueous solution. Product B can be easily isolated from the reaction mixture by filtration or the like and can be used in, e.g. blanching.