73.
    发明专利
    未知

    公开(公告)号:DE3619130A1

    公开(公告)日:1987-12-10

    申请号:DE3619130

    申请日:1986-06-06

    Applicant: BASF AG

    Abstract: A photosensitive recording element which is suitable for the production of printing plates or resist images, possesses a photopolymerizable recording layer which is applied to a dimensionally stable base, can be developed in an aqueous alkaline medium and contains, as a polymeric binder, one or more film-forming copolymers which are insoluble in water but soluble or dispersible in aqueous alkaline solutions and consist of from 10 to 50% by weight of one or more hydroxyalkyl (meth)acrylates, from 8 to 30% by weight of acrylic acid and/or methacrylic acid and from 30 to 80% by weight of one or more alkyl (meth)acrylates, some of the carboxyl groups of the copolymer being esterified by reaction with glycidyl (meth)acrylate.

    78.
    发明专利
    未知

    公开(公告)号:DE3227334A1

    公开(公告)日:1984-01-26

    申请号:DE3227334

    申请日:1982-07-22

    Applicant: BASF AG

    Abstract: 1. A copolymer obtained by free-radical copolymerization of an alkyl acrylate or methacrylate, a neutral nitrogen-containing water-soluble monomer, a monomer containing cationic groups, and an olefinically unsaturated carboxylic acid of 3 or 4 carbon atoms, characterized in that it is obtained by free-radical copolymerization of a) 20 to 75% by weight of ethyl, n-butyl, tert.-butyl or lauryl acrylate or methacrylate or mixtures thereof, b) 5 to 50% by weight of N-vinylpyrrolidone, N-vinylcaprolactam or mixtures thereof, c) 1 to 25% by weight of N-vinylimidazole, 1-vinyl-2-methylimidazole or mixtures thereof, and d) 1 to 25% by weight of acrylic acid or methacrylic acid, and has a Fikentscher K value of from 15 to 75, measured in ethanol at 25 degrees C.

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