Patent application number | Description | Published |
20100093598 | Silicone Foam Control Agent - A method of making silicone-based foam control agents comprising: i) preparing a polysiloxane containing polymer by the polymerisation of siloxane containing monomers and/or oligomers in the presence of an inert organopolysiloxane and/or an organic fluid, a suitable catalyst and optionally an end-blocking agent; ii) where required quenching the polymerisation process; wherein the inert organopolysiloxane and/or organic fluid is substantially retained within the resulting diluted polysiloxane containing polymer; iii) introducing from 0.1 to 10% by weight of a suitable filler prior to during or subsequent to step (i); iv) optionally introducing up to 5% by weight of a suitable silicone resin during or subsequent to step (i) and v) where required, adapting the foam control agent produced in steps (i) to (iv) into a suitable form of delivery therefor. | 04-15-2010 |
20100137454 | Silicone Polymer Emulsions - Silicone oil-in-water emulsions containing a polysiloxane containing polymer is prepared by first preparing a polysiloxane containing polymer by the polymerisation of siloxane containing monomers and/or oligomers in the presence of an inert organopoly siloxane and/or an organic fluid, a suitable catalyst and optionally an end-blocking agent; and quenching the reaction if required. If required one or more surfactants may be introduced into the polysiloxane containing polymer to form a homogenous oil phase. Water is then added (in an amount of 0.1-10 percent by weight based on total oil phase weight) to the homogenous oil phase to form a water-in-oil emulsion. Shear is applied to the water-in-oil emulsion to cause inversion of the water-in-oil emulsion to an oil-in-water emulsion. Finally, if required the oil-in-water emulsion can be diluted by adding more water. | 06-03-2010 |
20100292389 | AQUEOUS SILICONE EMULSION FOR IMPARTING WATER REPELLENCY - Aqueous silicone emulsions are disclosed containing a phenyl silsesquioxane resin, an alkoxysilane, a hydroxy terminated polydialkylsiloxane, and an emulsion of an aminofunctional polysiloxane. The silicone emulsions are useful for imparting water repellency to various surfaces, and in particular, inorganic building surfaces. | 11-18-2010 |
20110039087 | Emulsions Of Dilatant Organopolysiloxanes - Emulsions are disclosed of dilatant boron crosslinked organopolysiloxanes, coatings prepared from the emulsions, and various substrates impregnated with these coatings. The emulsions may be coated or impregnated onto fabrics to provide an energy absorbing material in Active Protection Systems. | 02-17-2011 |
20110039753 | Fabric Care Emulsion - The invention relates to oil-in-water emulsions, methods of making said emulsions and their uses in fabric care or hair care compositions. The fabric care composition comprises a silicone oil-in-water emulsion which emulsion is obtained by a. forming an oil phase by mixing at least one silicone compound with at least one silicone-free oil, b. optionally adding an emulsifier, c. adding water, d. forming an oil-in-water emulsion. A silicone oil, comprising a siloxane or polysiloxane compound, for example polydimethyl siloxane (polydimethyl silicone or PDMS), or a derivative thereof, e.g., amino and amido silicone, diluted with a silicone-free oil still can provide an emulsion providing high fabric care properties while decreasing the costs. | 02-17-2011 |
20110165206 | Preparation of Silicone Microemulsions - A mechanical method of making an oil-in-watermicroemulsion containing (A) a polysiloxane and (B) an inert fluid selected from an inert siloxane fluid and an inert organic fluid, where the average emulsion particle size is between 1 and 140 nanometers, is disclosed. The process involves the following steps: i) preparing an oil phase comprising a polysiloxane containing mixture by the polymerisation of silane or siloxane containing monomers and/or oligomers in the presence of an inert fluid, a suitable catalyst and optionally an end-blocking agent; and ii) where required quenching the polymerisation process; wherein the inert fluid is substantially retained within the resulting polysiloxane containing mixture; iii) if required, mixing one or more surfactants into the oil phase; iv) adding water to the oil phase, followed by applying agitation or shear to the mixture to arrive at an oil-in-water microemulsion; v) optionally diluting the oil-in-water microemulsion by adding more water. | 07-07-2011 |
20110178220 | Moisture Curable Compositions - A moisture curable composition comprising a polymer (A) containing reactive hydroxyl or hydrolysable groups bonded to silicon, which groups are reactive in the presence of moisture with each other or with groups in a crosslinking agent (B) present in the composition, characterized in that the composition is free from organic compounds of tin and contains kaolin as a catalyst for the reaction of the reactive groups of polymer (A). The kaolin is preferably calcined and most preferably is the only catalyst utilised during cure. | 07-21-2011 |
20110198779 | Polymeric Compositions - A one or two part organopolysiloxane composition capable of cure to an elastomeric body, the composition comprising a polymer having a polymer backbone selected from an organopolysiloxane backbone and a telechelic backbone, which polymer has not less than two reactable silicon-bonded groups selected from alkenyl group, condensable groups, silyl-hydride groups, 5 to 50% by weight of the composition of an extender; a suitable cure catalyst; and optionally a siloxane and/or silane cross-linker having at least two groups per molecule which are reactable with the reactable groups in (a) and/or one or more fillers. The extender is selected from an alicyclic ester having at least two ester groups, and a boiling point of at least 180° C. or a mixture thereof having a boiling point range commencing at 180° C. or above; each ester group being the same or different and comprising from 2 to 30 carbon atoms. | 08-18-2011 |
20120015108 | Composition Containing A Silicon-Containing Compound - The invention provides a composition for improving the water repellency of a substrate, like a construction substrate for example a building component. This composition contains a mixture formed by combining: water, at least one water-repellent silicon-containing compound, which is a silicone resin, an alkoxysilane or a polysiloxane, a siloxane surfactant containing an alkylpoly(ethyleneoxy)siloxane group and an alkyl siloxane group, where the alkyl group contains 1-6 carbon atoms. The composition can be used on previous treated substrates or more generally on substrates which are difficult to wet or penetrate. | 01-19-2012 |
20120020909 | Organopolysiloxane Emulsions and Their Production - This invention relates to aqueous emulsions comprising a polyorganosiloxane and a wax, and to methods of production of such emulsions. The emulsions are of the type oil-in-water. An organopolysiloxane is polymerized in admixture with a molten wax, thereby forming a blend of the wax with an organopolysiloxane of increased molecular weight, and the said blend of polymer and molten wax is emulsified in water in the presence of a surfactant. The emulsions are useful in personal care applications such as on hair, skin, mucous membrane or teeth. The emulsions are also useful in applications such as paints, water based coatings, textile fibre treatment, leather lubrication, fabric softening, fabric care in laundry applications, homecare, release agents and oil drag reduction. | 01-26-2012 |
20120022210 | Branched Organopolysiloxanes - The invention relates to branched organopolysiloxanes and to their preparation and use. A branched organopolysiloxane is prepared by the reaction of an alkoxysilane with a substantially linear organopolysiloxane containing at least one hydroxyl or hydrolysable group bonded to silicon, in the presence of a phosphazene catalyst. The branched organopolysiloxanes obtained can be suitable for use in a moisture curable sealant composition capable of curing to a high modulus seal, with less tendency to gel than when using other siloxane polycondensation catalysts. Phosphazene catalysts also have the advantage that the content of undesired low molecular weight cyclic silicones in the polymerisation product is low. | 01-26-2012 |
20120027708 | Organopolysiloxane Compositions And Their Production - This invention relates to the polymerization of organopolysiloxanes to form organopolysiloxanes of increased molecular weight and to the organopolysiloxane compositions thus produced. The organopolysiloxane is in admixture with a molten wax during the polymerization, thereby forming a blend of the wax with an organopolysiloxane of increased molecular weight. After the polymerisation reaction is completed, the reaction product can be cooled below the solidification temperature of the wax, for example down to room temperature. This yield a paste-like solid blend which is a very intimate dispersion of wax in organopolysiloxane or vice versa. The dispersion is surprisingly stable. | 02-02-2012 |
20120059114 | Preparation of Organosiloxane Polymers - A method of making a polysiloxane containing polymer is described. The method comprises the steps of: i) Preparing a polysiloxane containing polymer by the polycondensation of siloxane containing monomers and/or oligomers which comprise at least 2 condensable groups per molecule, in the presence of (a) one or more condensation catalysts and optionally one or both of (b) a diluent (a plasticiser and/or extender) and/or an end-blocking agent; and ii) Where required quenching the polymerisation process. The diluent, when present, is substantially retained within the resulting diluted polysiloxane containing polymer and the process takes place at a pressure of at least 75×10 | 03-08-2012 |
20120059115 | Preparation of Organosiloxane Polymers - A method of making a polysiloxane containing polymer is described. The method comprises the steps of the polycondensation of a) 100 parts by weight of oligomers comprising non-cyclic siloxane containing oligomers having at least two condensable groups per molecule alone or in a mixture with one or organic oligomers having at least two condensable groups per molecule in the presence of: b) at least 2 parts by weight per 100 parts of (a) of one or more condensation catalysts comprising a Bronsted acid or a Lewis acid c) at least 15 parts by weight per 100 parts of (a) of one or more liquefied gases or a supercritical fluid therefrom. Subsequent to the reaction completion the polysiloxane containing polymer is recovered by expansion of the liquefied gas(es) or supercritical fluid (c). | 03-08-2012 |
20120077729 | Organopolysiloxane Compositions Containing An Active Material - This invention relates to organopolysiloxane (silicone) compositions containing an active material chosen to have a desired effect in the composition, such as a perfume, sunscreen, vitamin, drug, biocide, pest repellent, catalyst or cooling agent. The active material is generally an organic material which is not silicon-containing. In particular the invention relates to such composition in which the release of the active material from the composition is inhibited or controlled. The active material is incorporated in a blend of a wax with an organopolysiloxane which has been formed by polymerization in the presence of the wax. It was found that by polymerizing an organopolysiloxane in admixture with molten wax, a stable wax silicone dispersion is obtained which allows ready incorporation of an active material such as a perfume and which releases the perfume only slowly, and may be controlled to release the perfume or other active material in desired circumstances. | 03-29-2012 |
20120172543 | Process for the Preparation of a Silicone Pressure-Sensitive Adhesive - Silicone pressure sensitive adhesive (PSA) compositions and methods for their preparation are provided. In one embodiment, PSAs are formed from a silicone polymer mixture by condensation polymerization of low viscosity polyorganosiloxanes in inert solvents and/or silicone fluids, and optionally adding a silicone resin (MQ) during polymerization. The silicone polymer mixture formed may also be mixed with a silicone resin (MQ) and bodying catalyst, and bodying is allowed to continue until the desired reaction product is formed. | 07-05-2012 |
20130017359 | Preparation Of Lignocellulosic Products - A lignocellulosic composite composition comprising: a) lignocellulosic pieces, b) one or more organic binders, c) hydrophobing agent in the form of a silicon containing material selected from (i) phenyl silsesquioxane resin, (ii) a reaction product of an aminosilane and alkylsilane, (iii) a resin emulsion and (v) a polydiorganosiloxane polymer having at least 2 Si—H groups having at least 2 Si—H groups per molecule in combination with either an aminosilane or an aminosiloxane or, in the absence of said aminosilane and said aminosiloxane when at least one organic binder (b) comprises primary or secondary amino groups. The hydrophobing agent is present in the composition in an amount of from about 0.05 to 3% by weight of the composition and is optionally wax free. Methods of preparation and uses are additionally discussed. | 01-17-2013 |
20130116381 | Process For Making Polysiloxane Emulsions - A process is described for making polysiloxane emulsions by emulsion polymerizing a silicon monomer or oligomer under an elevated pressure. The process produces emulsions of a polysiloxane containing a lower amount of octamethylcyclotetrasiloxane (D | 05-09-2013 |
20130122209 | Organosilicon Hydrophobing Agents - An organosilane having the formula | 05-16-2013 |
20140114029 | PROCESS FOR THE PREPARATION OF A SILICONE PRESSURE-SENSITIVE ADHESIVE - Silicone pressure sensitive adhesive (PSA) compositions and methods for their preparation are provided. In one embodiment, PSAs are formed from a silicone polymer mixture by condensation polymerization of low viscosity polyorganosiloxanes in inert solvents and/or silicone fluids, and optionally adding a silicone resin (MQ) during polymerization. The silicone polymer mixture formed may also be mixed with a silicone resin (MQ) and bodying catalyst, and bodying is allowed to continue until the desired reaction product is formed. | 04-24-2014 |
20140206813 | PROCESS OF PREPARING A SILOXANE COPOLYMER - A process for preparing a cyclic siloxane copolymer, a water repellent composition and the use for treating porous substrates like concrete, especially reinforced concrete. | 07-24-2014 |
20140316064 | Process For Preparing Silicone Emulsions - The present disclosure provides a process for preparing silicone emulsions via suspension polymerization techniques that are faster and/or provide higher molecular weight organopolysiloxanes than conventional techniques. The process involves combining a) an emulsifier, b) a silanol functional organopolysiloxane, c) a polymerization catalyst, and water to form a mixture, shearing the mixture to form an emulsion having a dispersed phase of the organopolysiloxane, reacting the emulsion in a closed system having a pressure greater than 1 MPa to polymerize the organopolysiloxane. | 10-23-2014 |