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| Number | Title | Issue Date |
| 8110697 | Method for the production of polymerizable silicones Polymerizable siloxy-substituted silanes are obtained in high yield and purity by adding a substituted alkoxysilane to a mixture of disiloxane, acetic acid, sulfuric acid, and optionally an acidic catalyst, separating a product phase from an acidic phase, adding hex... | 02/07/2012 |
| 7576231 | Method for producing isocyanate group-containing siloxane compound A method for producing an isocyanate group-containing siloxane compound is provided. In this method, a halogenated siloxane compound represented by the following general formula (1): or the following general formula (2) | 08/18/2009 |
| 7547797 | Highly volatile polyether-modified silicone surfactant A highly volatile electrical/electronic parts surfactant containing a polyether-modified silicone having one polyether chain in the molecule, wherein the surface tension at 25° C. of a 0.01 mass % aqueous solution thereof is 25 mN/m or less, the aforesaid silicone ... | 06/16/2009 |
| 7374771 | Use of siloxanes as vaporizable carriers Cosmetic formulations comprising alkyl-substituted siloxanes as vaporizable carriers. ... | 05/20/2008 |
| 7332620 | Process for the preparation of silicone oils carrying a group comprising at least one hydrocarbon-comprising ring in which is included an oxygen atom Process for the preparation of a functionalized silicone oil by hydrosilylation of synthons in the presence of at least one organohydrosilicon compound, characterized in that: (1) the synthons hydrosilylated with the organohydrosil... | 02/19/2008 |
| 7307123 | Photocurable compositions containing reactive particles A photocurable composition, including (a) a photocurable monomer, e.g. a cationically curable monomer and/or a radically curable monomer; (b) reactive particles comprising a crosslinked elastomeric core, e.g. made of polysiloxane material, and a shell of reactive gr... | 12/11/2007 |
| 7196153 | Equilibration of siloxanes The invention relates to a process for the preparation of equilibration products of organosiloxanes by rearrangement of the siloxane bond to a cation exchange resin, the organopolysiloxanes thus obtainable and the use thereof. ... | 03/27/2007 |
| 7148370 | Process for synthesis of diorganosilanes by disproportionation of hydridosiloxanes The present invention provides a novel method for the preparation of diorganosilanes by disproportionation of a hydridosiloxanes comprising at least one terminal SiH group and at least one siloxane bond in the presence of Lewis acid catalysts. The reaction is both s... | 12/12/2006 |
| 7067687 | Ultrastable organofunctional microporous to mesoporous silica compositions Mesostructured and microporous to mesoporous organofunctionalized silica compositions are described. The compositions incorporate the organofunctional group L as part of a LSiO3 unit in the framework of the compositions. In addition the compositions incor... | 06/27/2006 |
| 7015296 | Preparation of linear organosiloxane polymers By reacting two types of organosiloxane compounds in the presence of an alkaline compound and under conditions that do not substantially promote equilibration reaction, a linear organosiloxane polymer having a single peak molecular weight distribution is simply and ... | 03/21/2006 |
| 6927301 | Well-defined nanosized building blocks for organic/inorganic nanocomposites Functionalized silsesquioxanes containing from 6 to 24 silicon atoms and minimally about 67 mol percent RSiO3/2 moieties where R is a phenyl group bearing a chemically reactive functional group are highly suitable for use as nanoparticles in producing hig... | 08/09/2005 |
| 6927270 | Process for the functionalization of polyhedral oligomeric silsesquioxanes Efficient processes have been developed for the cost effective functionalization of polyhedral oligomeric silsesquioxane-silanols (POSS-Silanols) and for the manufacture of polyfunctional polyhedral oligomeric silsesquioxanes. The processes utilize the action of bas... | 08/09/2005 |
| 6875881 | Preparation of branched tetrasiloxane A branched tetrasiloxane is prepared by preforming a liquid mixture of a disiloxane compound, an alcohol and an acid catalyst, adding a trialkoxysilane compound to the mixture for reaction, and adding water to the reaction mixture for co-hydrolysis, thereby forming ... | 04/05/2005 |
| 6787625 | Polyorganosilsesquioxane and process for preparing the same Provided are polyorganosilsesquioxane and process for preparing the same. The polyorganosilsesquioxane is obtained by various methods including polymerization of 1,3-diorganosiloxane, a precursor that is prepared by using silane compounds as starting materials. The ... | 09/07/2004 |
| 6713643 | Ultrastable organofunctional microporous to mesoporous silica compositions Mesostructured and microporous to mesoporous organofunctionalized silica compositions are described. The compositions incorporate the organofunctional group L as part of a LSiO3 unit in the framework of the compositions. In addition the compositions incor... | 03/30/2004 |
| 6566348 | Pesticides based on cyclic polysiloxanes The present invention relates to immediately acting pest control compositions based on cyclic polysiloxanes, which can be employed without a residue and without a lasting action.... | 05/20/2003 |
| 6417310 | Method for preparing branched organopolysiloxane A branched organopolysiloxane is prepared by polymerizing an organopolysiloxane mixture of a branch unit-containing organopolysiloxane and a low molecular weight organopolysiloxane in the presence of an acidic or basic catalyst, or by adding a surfactant ... | 07/09/2002 |
| 6380406 | Homogeneous epoxidation catalyst A process for forming an olefin epoxidation catalyst is described. The process comprises reacting a tert-alkyl trihydroxysilane with a titanium complex such that the ratio of Si:Ti is 7. The catalyst is very active and selective in olefin epoxidation.... | 04/30/2002 |
| 6359097 | Functionalized polyorganosiloxanes and one of the processes for the preparation thereof The present invention relates to multifunctionalized polyorganosiloxanes comprising, per molecule at least one functional siloxy unit Y having C1-C.sub.5 alkoxy radical and at least one other functional siloxy unit W having an halogenated or po... | 03/19/2002 |
| 6303811 | Cyclic organosilicon endcapper having one aliphatic unsaturation A cyclic organosilicon compound comprising one aliphatic unsaturation described by formula ##STR1## where each R is an independently selected hydrocarbon radical free from aliphatic unsaturation comprising 1 to about 18 carbon atoms; each X is indepe... | 10/16/2001 |
| 6284858 | Silicone compounds and process for producing the same This invention relates to silicone compounds in which terminal SiO of cage-type and/or ladder-type polyphenylsilsesquioxanes is wholly or partly linked to a triorganosilyl group containing reactive functional group X and also relates to a process for prep... | 09/04/2001 |
| 6235863 | Production of saturated siloxane polymers from aromatic monomers A method for producing a saturated siloxane polymer is provided. In one aspect, the method comprises hydrogenating an aromatic siloxane monomer by contacting it with hydrogen in a temperature of 100° C. to 200° C. and a hydrogen pressure of 1000 to 2000... | 05/22/2001 |
| 6232425 | Polymerization process for fluorosilicone polymers A process for making organosilyl end-stopped diorganopolysiloxane fluid is provided comprising the steps of reacting an organic end-stopping compound with a fluorosilicone trimer in the presence of a catalytic amount of linear phosphonitrilic acid, and in... | 05/15/2001 |
| 6225490 | Continuous hydrolysis of organochlorosilanes For the continuous hydrolysis of organochlorosilane, a reaction system comprising at least three stages of hydrolysis is used. Each stage includes a reactor and a phase separator wherein hydrolysis is effected to form a hydrolysis mixture which is separat... | 05/01/2001 |
| 6221996 | Preparation of organoplysiloxane gum An organopolysiloxane gum is prepared by polymerizing a cyclic organosiloxane with a low molecular weight, linear organopolysiloxane end-blocked with a triorganosilyl group in the presence of an alkaline catalyst. The polymerization reaction is effected u... | 04/24/2001 |
| 6211323 | High molecular weight alkylmethyl-alkylaryl siloxane terpolymers having low SiH content and methods for their preparation The present invention relates to triorganosiloxy-endblocked poly(methyl(C6-C40alkyl)siloxane)-poly(methyl(aralkyl)siloxane)-poly(methy l(C2-C4alkyl)siloxane) terpolymers. This invention also relates to two different methods of making these terpolymers. The... | 04/03/2001 |
| 6180811 | Reducing low molecular weight cyclic organosiloxanes in a recirculating process stream A process for continuously reducing the amount of cyclic organosiloxane in a recirculating process stream. The process comprises washing a process stream in a wash step to reduce chloride content of the process stream, distilling the process stream into a... | 01/30/2001 |
| 6174968 | Oil gel formulations containing polysiloxane block copolymers dissolved in hydrogenated silicone oils A silicone oil gel composition which is comprised of a polysiloxane block copolymer which has at least two blocks of polystyrene, polyethylene, and hydrogenated polyisoprene wherein the overall number average molecular weight is from 1000 to 50,000, the p... | 01/16/2001 |
| 6063889 | Liquid organopolysiloxane resins, a process for their preparation, low viscosity polydiorganosiloxane compositions containing liquid organopolysiloxane resins and their use Novel liquid organopolysiloxane resins of the average composition [R1 Si(CH3)2 O1/2 ]a [(CH3)3 SiO1/2 ]b [R2 O1/2 ]c [R1 S... | 05/16/2000 |
| 5824761 | Radiation curable compositions containing vinyl ether functionality and methods for their preparation The present invention relates to radiation curable silicone vinyl ethers and methods for preparing silicone vinyl ethers. More particularly, the present invention relates compositions containing vinyl ether functional silicones and to the preparation and ... | 10/20/1998 |
| 5723561 | Process for the continuous preparation of organopolysiloxanes A process for the continuous preparation of organopolysiloxane by condensation and/or equilibration reaction of organosilicon compounds comprising in a first step conveying an organosilicon compound, catalyst which is solid in the reaction mixture at leas... | 03/03/1998 |
| 5688888 | Peralkylated phosphazene base-catalyzed silanol condensation method Organopolysiloxane oils and gums are produced by the condensation of silanol-terminated organosiloxane in the presence of an effective amount of a peralkylated phosphazene base as a catalyst and at reduced pressure.... | 11/18/1997 |
| 5670689 | Process for the manufacture of cyclosiloxanes by depolymerization of polysiloxanes The present invention relates to a process for the manufacture of cyclic polydiorganosiloxanes, especially octamethylcyclotetrasiloxane (D4) and decamethylcyclopentasiloxane (D5) by depolymerization of polydiorganosiloxanes in the pr... | 09/23/1997 |
| 5670688 | Process for the industrial manufacture of a cycloalkylsilane or polyorganosiloxane This invention relates to a process for the manufacture of a silane or polyorganosiloxane containing a cycloalkyl substituent by hydrogenation of a silane or polyorganosiloxane containing at least one aromatic hydrocarbon substituent in the presence of a ... | 09/23/1997 |
| 5639845 | Method for the preparation of a fluorine-containing organopolysiloxane A novel and very efficient method is disclosed for the introduction of perfluoroalkyl groups into an organopolysiloxane by utilizing the hydrosilation reaction with an organohydrogenpolysiloxane. Different from the conventional but inefficient hydrosilati... | 06/17/1997 |
| 5608096 | Method of forming siloxane polymers using a heteropoly catalyst having a keggin structure The invention relates to a method of forming siloxane polymers using a heteropoly catalyst having a Keggin structure. The method comprises contacting a fluid comprising at least one siloxane polymer precursor selected from the group consisting of cyclic s... | 03/04/1997 |
| 5534608 | Synthesis of low silanol content, triorgano-stopped silicone fluids Linear triorganosiloxy-terminated polydiorganosiloxanes having a silanol content of less than about 200 ppm are prepared by condensing linear higher molecular weight polydiorganopolysiloxanediols having one Si-bonded hydroxyl group in each terminal unit a... | 07/09/1996 |
| 5514828 | Process for polymerizing polyfluoroalkylsiloxane cyclic trimer A method is provided for making a polyfluoroalkylsiloxane fluid in the form of a homopolymer, copolymer, or terpolymer, by polymerizing polyfluoroalkylsiloxane trimer in the presence of a mixture containing an effective amount of water and a strong acid c... | 05/07/1996 |
| 5457220 | Process for the production of crosslinked siloxanes by disproportionation The present invention relates to a new silicone cure system. More particularly, the present invention discloses that a siloxane system containing sufficiently high levels of T or Q species in addition to M, D and a limited amount of silanol species can be... | 10/10/1995 |
| 5442025 | Organosilsesquioxanes having at least one mesogenic side group Organosilsesquioxanes having at least one mesogenic side group and processes for their preparation, which comprise reacting organosilsesquioxanes having at least one Si-bonded hydrogen atom with chiral or achiral mesogenic compounds containing an aliphati... | 08/15/1995 |
