Screen printable organosiloxane resin coating compositions

A thixotropic, screen printable coating composition comprising

• A. 100 parts by weight of a solubilized curable organosiloxane copolymer comprising methyl-substituted siloxane units, phenyl-substituted siloxane units and silanol groups, where said copolymer has a degree of substitution of at least 1.3;
• B. from 3 to 20 parts by weight of a finely divided silica filler;
• C. as the thixotropic agent, from 1 to 6 parts by weight of a liquid organosiloxane copolymer represented by the average general formula ##STR7## where Me represents methyl;
• R represents at least one member selected from the group consisting of an alkyl radical containing from 1 to 10 carbon atoms, a halogenated alkyl radical containing from 1 to 10 carbon atoms and a phenyl radical;
• R' represents an alkylene radical containing from 3 to 10 carbon atoms, Q represents --[OCH.sub.2 CH(CH.sub.3)].sub.z --, x is zero or a positive integer, w and y are at least 1;
• neither the value of w nor the sum of x and y exceed the value beyond which said copolymer is a solid at 25 degrees C., the units containing a Q substituent constitute from 2 to 80 percent of the total number of units in said copolymer and the value of z is from 2 to 30, inclusive;
• D. an amount of a silanol condensation catalyst sufficient to cure said composition;
• and
• E. from 10 to 30 parts by weight of a compatible solvent for said composition, said solvent having a boiling point of from 180 to 300 degrees C.