Polysiloxanes with (meth) acrylate ester groups linked through sic groups and their use as radiation-curable coating materials for flat carriers

摘要: Polysiloxanes with (meth)acrylate ester groups linked over SiC are disclosed which obtainable by the reaction of epoxy-functional polysiloxanes general formula ##STR1## in R 1 same or different low molecular alkyl to 4 carbon atoms phenyl groups, 2 is as presents 3 group 70 100% being epoxy functional and 30 0% 20 hydrogen, proviso that average molecule contains at least 1.5 a has value 1,000 b 0 10; such amounts an acid mixture, comprising (a) 10 90 mole percent (meth)acrylic anhydride (b) acid, sum adds up 100 percent, there present 0.8 1.9n preferably 1.1 equivalents per n epoxide equivalents. The useful radiation-curable adhesive coating materials for flat backings. siloxanes adhere well backing be coated cured high rate, having good chemical physical resistance flexibility. can matched character adjusted desired degree abhesiveness.