Abhesive coating composition with an additive, which affects the degree of abhesiveness

An abhesive coating composition containing one or more radiation-curing organopolysiloxane with (meth)acrylate ester groups, optionally a photoinitiator, a filler and a polysiloxane, obtained by reacting a siloxane resin A of the general formula ##STR20## wherein R.sup.1 is an alkyl group with 1 to 4 carbon atoms,

• R.sup.2 is an alkyl group with 1 to 4 carbon atoms or an alkenyl group with 2 to 6 carbon atoms,
• R.sup.3 is the R.sup.1 group or an alkoxy group with 1 to 4 carbon atoms or a hydroxy group,
• the number average molecular weight of the siloxane A being 500 to 100,000 and x, y and z being numbers, wherein the quotient x/(y+z) being equal to 0.5/1.0 to 1.5/1.0 and the quotient z/x being equal to 0/1.0 to 0.4/1.0, with an organopolysiloxane B of the general formula ##STR21## wherein R.sup.4 is an alkyl group with 1 to 4 carbon atoms, a phenyl group, a hydrogen group, or an ##STR22## group and R.sup.5 is identical with R.sup.4 or is the ##STR23## group, in which R.sup.6 is a divalent, optionally unsaturated, hydrocarbon group with up to 20 carbon atoms, which can be interrupted by an oxygen atom, and
• R.sup.7 is a methyl or hydrogen group,
• with the proviso that at least one R.sup.4 group is an ##STR24## group, a has a value of 0 to 100, and
• b has a value of 0 to 50,
• in a ratio by weight of siloxane resin A to polysiloxane B of about 100:0.1 to 50 in presence of an acidic equilibration catalyst at a temperature ranging from about between 0.degree. and 140.degree. C.