# US 5,708,113 A · Catalyst for the preparation and processing of polyorganosiloxanes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,708,113 A - Document ID: US5708113A - Status: Granted - Kind: A - Application number: 08/765,458 - Filed: 1997-01-23 - Granted: 1998-01-13 - Earliest claimed: 1994-07-23 - Assignees: Huels Silicone GmbH - Inventors: Gunter Beuschel; Holger Rautschek; Gisela Liesch - Web page: https://patentgrep.com/patent/US5708113A ## CPC - B01J 31/124: {Silicones or siloxanes or comprising such units} - B01J 31/0274: {containing silicon (ligands in coordination complexes B01J31/1608)} - B01J 31/04: containing carboxylic acids or their salts {(B01J31/0277 - B01J31/0298 take precedence; multi-metal carboxylate complexes like Pd (II) acetate, i.e. Pd3 (OAc) 6 or Cr(II)acetate, i.e. Cr2(OAc)4 B01J31/2226)} - B01J 35/40: characterised by dimensions, e.g. grain size (in a colloidal state B01J35/23; crystallite size B01J35/77) - B01J 35/45: Nanoparticles - C04B 26/32: containing silicon - C08G 77/08: characterised by the catalysts used - C08K 5/0091: {Complexes with metal-heteroatom-bonds} - C09K 3/1018: {Macromolecular compounds having one or more carbon-to-silicon linkages} - H01B 3/04: mica - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) ## Abstract The invention relates to catalysts for the preparation and processing of polyorganosiloxanes, in particular for processing silicone resins, for example for solvent-free production of mica insulating materials. The catalysts are silanized organometallic compounds. ## Claims ### Claim 1 Catalyst particle for the preparation and processing of polyorganosiloxanes by condensation in aqueous formulations, which is a silanized organometallic compound with a particle size of 0.1 to 100 .mu.m. ### Claim 2 (depends on 1) Catalyst according to claim 1, characterized in that the organometallic compound employed is solid or pulverulent. ### Claim 3 (depends on 1) Catalyst according to claim 1, characterized in that the organometallic compound employed is hydrophobic. ### Claim 4 (depends on 1) Catalyst according to claim 1, characterized in that the organometallic compound employed is water-insoluble. ### Claim 5 (depends on 1) Catalyst according to claim 1, characterized in that one or more compounds having the general formula R.sup.1.sub.b MR.sup.2.sub.(w-b)-(z.c) L.sub.c (I) wherein R.sup.1 denotes identical or different, substituted and/or unsubstituted carboxyl radicals having 1 to 30 carbon atoms and/or identical or different, substituted and/or unsubstituted alkoxy radicals having 1 to 4 carbon atoms, and R.sup.2 is identical or different, substituted and/or unsubstituted hydrocarbon radicals having 1 to 10 carbon atoms, M is a metal of the 2nd, 3rd or 4th main group or 2nd to 8th sub-group of the Periodic Table, L is identical or different chelating ligands having z bonds to the metal M, w is the coordination number of M, b has a value between 1 and w and c has a value between 0 and 3, and/or partial hydrolyzates thereof, are the organometallic compound. ### Claim 6 (depends on 5) Catalyst according to claim 5, characterized in that M is tin, zinc, aluminum, zirconium, iron, titanium or hafnium. ### Claim 7 (depends on 1) Catalyst according to claim 1, wherein the organometallic compound is an aluminum soap of carboxylic acids having 4 to 8 carbon atoms. ### Claim 8 (depends on 1) Catalyst according to claim 1, wherein the organometallic compound is a polymeric alkyl titanate. ### Claim 9 (depends on 1) Catalyst according to claim 1, characterized in that an organosilicon compound of the general formula R.sup.3.sub.a SiX.sub.(4-a) (II) wherein R.sup.3 denotes identical or different, substituted and/or unsubstituted hydrocarbon radicals having 1 to 10 carbon atoms, with the proviso that at least one radical R.sup.3 per compound (II) contains a polar grouping, X is a hydrolysable radical chosen from alkoxy, alkenoxy, acetoxy, antino, amido, aminoxy, oxime, halogen groups or mixtures thereof, and a is an integer between 1 and 3, and/or partial hydrolysates thereof is a silanizing compound of the organometallic compound. ### Claim 10 (depends on 9) Catalyst according to claim 9, characterized in that, in the general formula (II), at least one radical R.sup.3 contains a grouping with a basic nitrogen and the radical X denotes alkoxy groups having 1 to 4 carbon atoms. ### Claim 11 (depends on 1) Catalyst according to claim 1, obtained by reaction of one or more compounds of the general formula (I) with one or more compounds of the general formula (II) in the presence of water, R.sup.1.sub.b MR.sup.2.sub.(w-b)-(z.c) L.sub.c (I) wherein R.sup.1 denotes identical or different, substituted and/or unsubstituted carboxyl radicals having 1 to 30 carbon atoms and/or identical or different, substitute, d and/or unsubstituted alkoxy radicals having 1 to 4 carbon atoms, and R.sup.2 is identical or different, substituted and/or unsubstituted hydrocarbon radicals having 1 to 10 carbon atoms, M is a metal of the 2nd, 3rd or 4th main group or 2nd to 8th sub-group of the Periodic Table, L is identical or different chelating ligands having z bonds to the metal M, w is the coordination number of M, b has a value between 1 and w and c has a value between 0 and 3, and/or partial hydrolyzates thereof, R.sup.3.sub.a SiX.sub.(4-a) (II) wherein R.sup.3 denotes identical or different, substituted and/or unsubstituted hydrocarbon radicals having 1 to 10 carbon atoms, with the proviso that at least one radical R.sup.3 per compound (II) contains a polar grouping, X is a hydrolysable radical chosen from alkoxy, alkenoxy, acetoxy, amino, amido, aminoxy, oxime, halogen groups or mixtures thereof, and a is an integer between 1 and 3, and/or partially hydrolysates thereof. ### Claim 12 (depends on 11) Catalyst according to claim 11, characterized in that 0.1 to 50% by weight water, based on the total amount of the compounds, is present. ### Claim 13 (depends on 1) An aqueous composition comprising an organosilicon compound and the catalyst according to claim 1. ### Claim 14 (depends on 13) The aqueous composition according to claim 13, wherein the catalyst is present in an amount of 0.02 to 20% by weight based on the composition. ### Claim 15 (depends on 13) The aqueous composition according to claim 13, comprising as organosilicon compound one or more compounds of the general formula R.sup.5.sub.d R.sup.6 O).sub.e SiO.sub.(4-d-e)/2 (III) wherein R.sup.5 denotes identical or different, saturated and/or unsaturated, substituted and/or unsubstituted monovalent hydrocarbon radicals having 1 to 30 carbon atoms, R.sup.6 is hydrogen or C.sub.1-4, alkyl or a mixture thereof, d has a value between 0 to 2.1 and e has a value between 0.01 and 4, or mixtures of these compounds with highly disperse silicic acid. ### Claim 16 (depends on 13) The aqueous composition according to claim 13 further comprising a mica insulating material. ### Claim 17 (depends on 9) Catalyst according to claim 9, characterized in that, in the general formula (II), at least one radical R.sup.3 is an R.sup.4.sub.2 N›YN(R.sup.4)!.sub.n Y grouping and the radical X is an alkoxy radical, wherein R.sup.4 denotes identical or different, substituted and/or unsubstituted radicals having 1 to 10 carbon atoms or hydrogen, Y denotes identical or different, substituted and/or unsubstituted divalent hydrocarbon radicals having 2 to 6 carbon atoms and n has a value between 1 and 4.