Abstract: The invention relates to a process for the preparation of microcapsulated flakes or powders by drying aqueous mixtures containing (a) one or more water-emulsifiable, non-thermoplastic compounds which have a higher boiling point than waterand (b) at least one water-soluble, film-forming polymer, in which the content of component (a) is up to about 95% by weight, based on the dry weight of components (a) and (b), with the proviso that the water-soluble, film-forming polymer has a flocculation point of from 20.degree. to 98.degree. C. or the flocculation point is adjusted to from 20.degree. to 98.degree. C. with the aid of additives, and drying is carried out by thin-layer drying in a temperature range above the flocculation point.

Abstract: The invention relates to a process for the preparation of microencapsulated flakes or powders by drying aqueous mixtures containing (a) one or more water-emulsifiable, non-thermoplastic compounds which have a higher boiling point than water and (b) at least one water-soluble, film-forming polymer, in which the content of component (a) is up to about 95% by weight, based on the dry weight of components (a) and (b), with the proviso that the water-soluble, film-forming polymer has a flocculation point of from 20.degree. to 98.degree. C. or the flocculation point is adjusted to from 20.degree. to 98.degree. C. with the aid of additives, and drying is carried out by thin-layer drying in a temperature range above the flocculation point.

Abstract: The invention relates to antifoam compositions containing an essentially linear organopolysiloxane, a silicone resin containing essentially triorganosiloxy and SiO.sub.4/2 units, and a filler.

Abstract: This invention relates to fluoroalkyloxyalkyl diorganopolysiloxanes having the general formula ##STR1## where R.sup.1 represents fluoroalkyloxyalkyl groups of the general formula--(CH.sub.2).sub.a --O--C.sub.b F.sub.2b Hin which the hydrogen atom is in the beta position to the ether oxygen, a is 2, 3 or 4; b is an integer having a value of from 1 to 6; R.sup.2 represents an alkyl group having from 1 to 8 carbon atoms whose terminal units may also contain an amino or a thiol group, or an alkenyl group having 2 or 3 carbon atoms, or an aryl group having from 6 to 8 carbon atoms or hydrogen; R.sup.3 represents the group having the formula--(CH.sub.2).sub.c --C.sub.d F.sub.(2d-e+1) Hal.sub.e,in which Hal represents a terminal chlorine, bromine or iodine atom, c is 2, 3 or 4; d is an integer having a value of from 1 to 18; e is 0 or 1; R.sup.4, R.sup.5 and R.sup.6 are the same as R.sup.

Abstract: This invention relates to fluoroalkyloxyalkyl diorganopolysiloxanes having the general formula ##STR1## where R.sup.1 represents fluoroalkyloxyalkyl groups of the general formula--(CH.sub.2).sub.a --O--C.sub.b R.sub.2b Hin which the hydrogen atom is in the beta position to the ether oxygen, a is 2, 3 or 4; b is an integer having a value of from 1 to 6; R.sup.2 represents an alkyl group having from 1 to 8 carbon atoms whose terminal units may also contain an amino or a thiol group, or an alkenyl group having 2 or 3 carbon atoms, or an aryl group having from 6 to 8 carbon atoms or hydrogen; R.sup.3 represents the group having the formula--(CH.sub.2).sub.c --C.sub.d F.sub.(2d-e+l) Hal.sub.e ,in which Hal represents a terminal chlorine, bromine or iodine atom, c is 2, 3 or 4; d is an integer having a value of from 1 to 18; e is 0 or 1; R.sup.4, R.sup.5 and R.sup.6 are the same as R.sup.

Abstract: Aqueous dispersible defoamers containing an organopolysiloxane, filler, a dispersant which is at least in part a surfactant and 2,2,4-trimethyl-1,3 diisobutyloxypentane, in which at least a portion of the organopolysiloxane contains in addition to the SiC-bonded organic radicals, SiOC-bonded radicals having at least 6 carbon atoms per radical which contain carbon and hydrogen atoms and/or carbon, hydrogen and at least 2 oxygen atoms per radical and may also contain at least one silicon atom.

Abstract: Self-emulsifiable antifoams containing an organopolysiloxane in which at least 80 mole percent of the siloxane units are dihydrocarbon siloxane units, a filler, a water-soluble cellulose derivative, and as an additional dispersant, at least one compound having the following general formula:RCOO(CH.sub.2).sub.2 SO.sub.3 Mwhere R is an aliphatic hydrocarbon radical having at least 7 carbon atoms in which at least 10 percent of the number of R radicals must have at least 11 carbon atoms, and M represents an ammonium group or an alkali metal atom.

Abstract: Antifoams containing an organopolysiloxane and a solid dispersed in said organopolysiloxane, in which at least a portion of the organopolysiloxane is an organopolysiloxane which has a viscosity of from 5 to 40 mm.sup.2.s.sup.-1 at 25.degree. C. and contains on the average at least 0.5 alkoxy groups per Si-atom and has an SiC-bonded monovalent hydrocarbon radical linked to each silicon atom.

Abstract: Antifoam compositions containing organopolysiloxanes having antifoaming properties and a solid material finely dispersed in said organopolysiloxanes in which at least a portion of the solid material is a product obtained from the reaction of an isocyanate and an organic compound having at least one hydrogen atom capable of reacting with the N.dbd.C.dbd.O group.