Abstract: Polymer-containing compositions contain: a) a polymer (I) containing at least two functional groups selected from the group consisting of ?-ketocarbonyl and ?-enaminocarbonyl functions, b) a compound (II) of a metal selected from the group consisting of the transition metals and the lanthanides and main groups 1, 2, 3 and 4 with the exception of the boron and carbon.

Abstract: Emulsions of highly viscous organopolysiloxanes are prepared by reacting organopolysiloxanes having at least one Si—OH group with alkoxysilanes bearing a group BReSi(OR3)3-e wherein R is a hydrocarbon radical and B is a radical —CR22—Y where Y is halogen, monosubstituted O or S or substituted N or P, the reaction taking place as a dispersion in water, optionally in the presence of an emulsifier.

Abstract: Easily emulsified hydrophilic copolysiloxanes may be prepared by hydrosilylation employing an Si—H-functional organosiloxane with a compound containing both a hydrosilylatable group and an active hydrogen, and reacting the intermediate thus formed with a di- or polyisocyanate, wherein the reactants employed to produce the intermediate contain less than 2000 ppm water.

Abstract: Organosilicon compounds containing urethane groups are prepared by reacting aminofunctional organosilicon compounds containing at least one siloxane unit AR a ? SiO 3 - a 2 ( I ) per molecule and at least two siloxane units of the formula XR b ? SiO 3 - b 2 ( II ) in which R are monovalent, optionally substituted C1-18 hydrocarbon radicals, A is a radical —R1(—NR2—R1)z—NR2—H, ??(III) where R1 is a divalent C1-18 organic radical, R2 is a hydrogen atom or C1-18 hydrocarbon radical, X is a group capable of condensation, a is 0 or 1, b is 1 or 2, z is 0 or an integer from 1 to 10, are reacted with organic carbonates (2) containing a group of the formula —O—C(?O)O—, ??(IV) and, in a second stage, the first stage reaction products are optionally condensed with silanes (3) bearing groups capable of condensation, to give higher molecular weight organosilicon compounds containing urethane groups.

Abstract: ?-ketocarbonyl-functional organosilicon compounds are prepared by reacting, organosilicon compounds containing an SiC-bonded organic radical having a primary amino group, with organic ester compounds containing a group of the formula —O—C(?O)— and, reacting the product with diketenes or diketene derivatives, to produce ?-ketocarbonyl-functional organosilicon compounds containing at least one SiC-bonded radical of the formulae —R1{—N[C(?O)—CHR5—C(?O)—CH2R5]—R1}x—NH—C(?O)—(O)y—R4{—O—[C(?O)—CHR5—C(?O)—CHR5]yH}z or —R1(—NR2—R1)x—NH—C(?O)—(O)y—R4{—O—[C(?O)—CHR5—C(?O)—CHR5]yH}z R1 is a divalent C1-18 organic radical R2 is a hydrogen atom or a monovalent C1-18 organic radical, R5 is hydrogen, v is 1, x is 0 or an integer from 1 to 10, R2? has one of the meanings of R2 with the proviso that R2? is not a hydrogen atom, y is 0 or 1, and z is 1 or 2.

Abstract: Highly branched alkenyl-functional organopolysiloxane polymers are highly efficient antimisting additives for use in the preparation of silicone release coatings in high speed coating operations. The antimisting additives are miscible with the crosslinkable silicone coating components and produce storage stable compositions which can be used to provide coatings with good release properties.

Abstract: Branched, alkenyl-functional organopolysiloxanes prepared by reacting an organic compound having at least two aliphatic double bonds with an organopolysiloxane having more than one Si-bonded hydrogen atom, in the presence of a hydrosilylation catalyst, and in a stoichiometric ratio of aliphatic double bonds to Si-bonded hydrogen such that an alkenyl-functional product is obtained, function as highly effective antimisting additives in the high speed coating of substrates with crosslinkable silicone compositions.

Abstract: Branched organosilicon compounds bearing aliphatic multiple bonds, prepared by reacting a branched organosilicon compound having Si-bonded hydrogen atoms with an organosiloxane or organopolysiloxane having terminal aliphatic multiple bonds and optionally equilibrating with further organopolysiloxanes are useful as antimisting additives in the high speed coating of substrates with crosslinkable silicone compositions.

Abstract: Process for preparing highly viscous organopolysiloxanes by reacting siloxanes (1) composed of units of the general formula A a ? R c ? ( OR 1 ) d ? SiO 4 - ( a + c + d ) 2 ( I ) where A is a nitrogen-containing Si—C-bonded radical, R is a C1-18 hydrocarbon radical R1 is hydrogen or a C1-8 alkyl radical, a and d are 0 or 1, c is 0, 1, 2 or 3, a+c+d is <3 and one A and one R1 where of R1 is hydrogen atom are present, optionally siloxanes (2) R c ? ( OR 1 ) d ? SiO 4 - ( c + d ) 2 ( II ) where c+d is ?3 and one R1 radical is hydrogen is present, with silanes (3) BReSi(OR3)3?e??(III) where B is a radical —CR22—Y, R2 is hydrogen or C1-4 alkyl, Y is halogen, a monosubstituted O and S atom, or a substituted N or P atom, R3 is C1-8 alkyl, and e is 0, 1 or 2.

Abstract: An antifoam formulations comprise (A) antifoam agent based on siloxanes and (B) branched polyether/polysiloxane copolymers comprising structural units of the formula Y[—CnH2n—(R2SiO)m—Ap—R2Si—G]x??(I) in which Y is a multivalent, optionally heteroatom-containing hydrocarbon radical, R are monovalent optionally halogenated hydrocarbon radicals, A is a radical —R2Si—R2—(R2SiO)m—, G is a monovalent radical —CfH2f-2k—Z or a divalent radical —CnH2n— bonded to a radical Y, Z —(R6)v—(OCH2CH2)a[OCH2CH(CH3)]b[OCH2CH(CH2CH3)]c—OR3, in which R3 is hydrogen, a hydrocarbon radical, or a radical R—C(O)—, R6 is a divalent hydrocarbon radical, v is 0 or 1, a, b and c are 0 or an integer between 1 and 1000, the sum (a+b+c) being from 2 to 2000, x is 3 to 10, f is 2 to 12, k is 0 or 1, n is 2 to 12, m is at least 1, and p is 0 or a positive integer, the branched polyether/polysiloxane copolymers (B) containing on average at least one group Z.

Abstract: Easily emulsified hydrophilic copolysiloxanes may be prepared by hydrosilylation employing an Si—H-functional organosiloxane with a compound containing both a hydrosilylatable group and an active hydrogen, and reacting the intermediate thus formed with a di- or polyisocyanate, wherein the reactants employed to produce the intermediate contain less than 2000 ppm water.

Abstract: The present invention relates to a process for adding Si-bonded hydrogen to aliphatically unsaturated compounds containing carbon-carbon multiple bonds and ether oxygen atoms in the presence of carbinol groups, wherein the reaction mixture comprises, as a further component, at least one cyclic ether.

Abstract: Silicone-containing polymers having numerous uses are prepared by polymerizing one or more ethylenically unsaturated monomers in the presence of a branched organopolysiloxane having at least one lipophilic branched siloxane portion and at least one optionally branched hydrophilic portion.

Abstract: Pastes comprise (1) siloxane copolymers which contain at least two groups of the general formula —C(O)NR1— in covalently bonded form on average per molecule, where R1 is a hydrogen atom or an alkyl radical having 1 to 18 carbon atoms and (2) organic compound(s) with a melting point greater than 0° C. which are dispersed in the siloxane copolymers (1) and contain at least one group which participates in the formation of hydrogen bridges with the —C(O)NR1 groups in (1). The pastes are useful for numerous purposes, for example as hydrophobicizing compositions.

Abstract: Compositions comprising (A) an organosilicon compound of the formula Ra(R1O)bR2cSiO(4-a-b-c)/2 ??(I) in which R2 independently denotes a monovalent, SiC-bonded, optionally substituted, aliphatic cyclic or aliphatic branched hydrocarbon radical having at least 3 carbon atoms, R, and R1 are hydrogen or hydrocarbon radicals, the sum a+b+c?3, the organosilicon compound has at least one unit of the formula (I) with c other than 0, and in at least 50% of all of the units of the formula (I) in the organosilicon compound the sum a+b+c is 2; at least one additive (B) selected from (B1) filler particles and/or (B2) organopolysiloxane resin(s) and optionally (C) an organosilicon compound which has units of the formula (III), R5g(R6O)hSiO(4-g-h)/2 where R5 and R6 are hydrogen or a hydrocarbon radical, g+h?3 and in at least 50% of the units (III), g+h=2, are highly effective and long lasting defoamers.

Abstract: Hydrophilic siloxane copolymers are prepared by (a) reacting organopolysiloxanes having at least one Si-bonded hydrogen atom with substantially linear oligomeric or polymeric compounds of formula R1-(A-CnH2n)m-A1-H??(I) where R1 is a monovalent optionally substituted, hydrosilylatable hydrocarbyl radical, A is a bivalent polar organic radical selected from —O—, —C(O)—O—, —O—C(O)—, —O—C(O)—O—, —C(O)—NH—, —NH—C(O)—, urethane radicals and urea radicals, A1 is a bivalent polar organic radical selected from —O—, —NH— and —NR?—, n is an integer from 1 to 20, and m is zero or a positive integer, (b) reacting the resulting intermediate with organic compounds which have two or more isocyanate groups, in the presence of further organic compounds (6) reactive toward isocyanate groups and containing at least one tertiary amine group, and (c) quaternizing the amino-group-containing intermediate from step (b) with an alkylating agent (8), with the proviso that the water content of the compounds (1) and (2) is lower than

Abstract: Highly branched alkenyl-functional organopolysiloxane polymers are highly efficient antimisting additives for use in the preparation of silicone release coatings in high speed coating operations. The antimisting additives are miscible with the crosslinkable silicone coating components and produce storage stable compositions which can be used to provide coatings with good release properties.

Abstract: Antimisting additives are used in crosslinkable silicone coating compositions for reducing aerosol formation, the antimisting additives being alkenyl-functional siloxane copolymers prepared by reacting a hydrocarbon containing at least three aliphatic double bonds, and with an organosiloxane (2) having terminal Si-bonded hydrogen atoms in the presence of a hydrosilylation catalyst (3) at a ratio of Si-bonded hydrogen to aliphatic double bonds of from 1.3 to 10, and subsequently reacting the resulting SiH-containing hydrocarbon-siloxane copolymer with an ?,?-dialkenylsiloxane polymer (4) in the presence of a hydrosilylation catalyst (3) at a ratio of aliphatic double bonds to Si-bonded hydrogen of from 1.2 to 10, and optionally, in another step, equilibrating the resulting alkenyl-functional siloxane copolymers with an organopolysiloxane (5).

Abstract: Branched, alkenyl-functional organopolysiloxanes prepared by reacting an organic compound having at least two aliphatic double bonds with an organopolysiloxane having more than one Si-bonded hydrogen atom, in the presence of a hydrosilylation catalyst, and in a stoichiometric ratio of aliphatic double bonds to Si-bonded hydrogen such that an alkenyl-functional product is obtained, function as highly effective antimisting additives in the high speed coating of substrates with crosslinkable silicone compositions.

Abstract: The present invention relates to a process for adding Si-bonded hydrogen to aliphatically unsaturated compounds containing carbon-carbon multiple bonds and ether oxygen atoms in the presence of carbinol groups, wherein the reaction mixture comprises, as a further component, at least one cyclic ether.