Abstract: Diaryliodonium salts are disclosed, as well as a method for preparing them, in which one of the aryl groups bonded to the positively-charged iodine ion contains a methyl substituent, and the other one contains a hydroxyl-substituted alkoxy group. The salts are synthesized from (o, m, or p)-iodotoluene, as opposed to iodobenzene, and therefore do not pose a carcinogenic risk. In addition, the present salts are unexpectedly more soluble in most organic solvents, as well as in nonpolar monomers, than the corresponding benzene catalysts. The salts are useful as cationic photoinitiators, cationic thermal initiators (often combined with a cocatalyst, e.g. copper), and as starting materials in the synthesis of urethane-containing iodonium salts.

Abstract: The invention relates to the use of silicone-polyether copolymers of the formula I as surface-active substances in the production of polyurethane foams.

Abstract: Diaryliodonium salts are disclosed, as well as a method for preparing them, in which one of the aryl groups bonded to the positively-charged iodine ion contains a methyl substituent, and the other one contains a hydroxyl-substituted alkoxy group. The salts are synthesized from (o, m, or p)- iodotoluene, as opposed to iodobenzene, and therefore do not pose a carcinogenic risk. In addition, the present salts are unexpectedly more soluble in most organic solvents, as well as in nonpolar monomers, than the corresponding benzene catalysts. The salts are useful as cationic photoinitiators, cationic thermal initiators (often combined with a cocatalyst, e.g. copper), and as starting materials in the synthesis of urethane-containing iodonium salts.

Abstract: The invention relates to novel organosiloxanyl derivatives of the general formula: to a process for preparing these derivatives, to the use thereof for preparing organomodified siloxanes and to the use thereof as paint additives.

Abstract: The invention relates to the use of silicone-polyether copolymers of the formula I 1

Abstract: Oraganopolysiloxanes of the general formula ##STR1## where R.sup.1 =identical or different aliphatic or aromatic hydrocarbon radicals,R.sup.2 =CH.sub.2 CH.sub.2 O(CR.sup.4 R.sup.5).sub.x OC(O)CR.sup.6 .dbd.CHR.sup.7, whereR.sup.4, R.sup.5, R.sup.6 and R.sup.7can be identical or different radicals and are each a H or alkyl radical, branched or unbranched, having up to a total of 6 C atoms and x has a value from 3 to 11, where --(CR.sup.4 R.sup.5)-- can also be a cyclic aliphatic or aromatic radical,R.sup.3 =R.sup.2 or R.sup.1,a=0 to 50 andb=0 to 500,but at least one radical R.sup.2 is attached terminally and/or laterally.

Abstract: Radiation-curing printing inks which comprise organopolysiloxanes of the general formula ##STR1## in which R.sup.1 =an alkyl radical having 1 to 8 carbon atoms,R.sup.2 =a group of the formula--CH.sub.2 --CH.sub.2 --C(O)O--R--(OC(O)--CH.dbd.CH.sub.2).sub.x-1and/or--CH.dbd.CH--C(O)O--R--(OC(O)--CH.dbd.CH.sub.2).sub.x-1in which x is an integer and is at least 2, and R is a hydrocarbon radical which optionally has alkoxy groups,R.sup.3 =R.sup.1 or R.sup.2,n=30 to 150,m=0 to 3, preferably 0,in quantities of from 0.01 to 3% by weight, based on the ink formulation.

Abstract: Aqueous and radiation-curable printing varnishes and printing inks, are disclosed which contain special polyoxyalkylene polysiloxane copolymers. These printing varnishes and printing inks have improved scratch resistance, a higher gliding ability and an extremely low tendency to foam, so that the production of printing inks proceeds without problems and, at the same time, an optically attractive typography can be obtained.

Abstract: Organopolysiloxane polyethers with increased resistance to hydrolysis are prepared. Furthermore, a method of rendering an aqueous system hydrolysis-resistant and exhibiting increased wetting property utilizing such polysiloxane polyethers as wetting agents in aqueous systems is described. Aqueous coating systems containing such polyethers exhibit increased wetting property and are resistant to alkaline and acidic hydrolysis.