Abstract: The present invention pertains to an epoxy-functional organopolysiloxane resin, and an epoxy-functional organopolysiloxane coating composition comprising the epoxy-functional organopolysiloxane resin. The epoxy-functional organopolysiloxane coating composition comprises the epoxy-functional organopolysiloxane resin of the present invention and a hardener. The epoxy-functional organopolysiloxane coating composition may optionally include pigments, a flow additive and a catalyst. The epoxy-functional organopolysiloxane resin is preferably prepared by reacting a silicone resin with a silane having at least one epoxy group per molecule. The coating composition cures through the crosslinking of the epoxy groups of the resin to provide a coating which is weather and corrosion resistant. The polysiloxane moieties in the resin render the cured coating resistant to U.V. light and heat.
Abstract: Low solvent and solvent-free silicone release coatings may be prepared with varying COF levels by incorporating a very high molecular weight, substantially non-reactive organopolysiloxane into a conventional curable release coating. By supplying the COF additive in the form of a relatively low viscosity master batch, adjustment of COF may be made by the coating applicator. Very low COF values can be obtained from tin-free, solvent-free coating systems, while at the same time, the coatings have very low extractables.
Type:
Grant
Filed:
April 27, 2001
Date of Patent:
May 27, 2003
Assignee:
Wacker Silicones Corporation
Inventors:
Oliver H. Zoellner, Andrew J. Conti, Kathleen D. Beekel
Abstract: Low solvent and solvent-free silicone release coatings may be prepared with varying COF levels by incorporating a very high molecular weight, substantially non-reactive organopolysiloxane into a conventional curable release coating. By supplying the COF additive in the form of a relatively low viscosity master batch, adjustment of COF may be made by the coating applicator. Very low COF values can be obtained from tin-free, solvent-free coating systems, while at the same time, the coatings have very low extractables.
Type:
Application
Filed:
April 27, 2001
Publication date:
December 19, 2002
Applicant:
Wacker Silicones Corporation
Inventors:
Oliver H. Zoellner, Andrew J. Conti, Kathleen D. Beekel
Abstract: The present invention pertains to an epoxy-functional organopolysiloxane resin, and an epoxy-functional organopolysiloxane coating composition comprising the epoxy-functional organopolysiloxane resin. The epoxy-functional organopolysiloxane coating composition comprises the epoxy-functional organopolysiloxane resin of the present invention and a hardener. The epoxy-functional organopolysiloxane coating composition may optionally include pigments, a flow additive and a catalyst. The epoxy-functional organopolysiloxane resin is preferably prepared by reacting a silicone resin with a silane having at least one epoxy group per molecule. The coating composition cures through the crosslinking of the epoxy groups of the resin to provide a coating which is weather and corrosion resistant. The polysiloxane moieties in the resin render the cured coating resistant to U.V. light and heat.
Abstract: Smart airbag systems employ a sensor bag containing an organopolysiloxane gel pressure transmission medium, transmitting pressure to one or more associated pressure sensor devices. The organopolysiloxane gel efficiently transmits pressure without leaking or extruding from the sensor bag when the latter is punctured or ruptured.
Type:
Grant
Filed:
February 26, 1999
Date of Patent:
August 13, 2002
Assignee:
Wacker Silicones Corporation
Inventors:
Benjamin D. Ray, Toby R. Vick, Wolfgang Schuett
Abstract: Soft, creamy translucent and transparent gels suitable for use in cosmetic applications may be prepared by hydrosilylating an unsaturated MQ resin or its equivalent with an Si—H functional organopolysiloxane cross-linker having Si—H functionality along its polysiloxane backbone, in the presence of a low viscosity and preferably volatile organopolysiloxanes. The stable gels obtained may be converted to creamy gels of a wide range of consistency by simple shearing. Gel firmness can be maintained through addition of a catalyst inhibitor to the gel formulation.
Abstract: Organopolysiloxane gels containing gel-bound hydrophillic groups are prepared by reacting a hydrosilylatable unsaturated organopolysiloxane resin, a crosslinker bearing Si—H bound hydrogen, and a hydrosilylatable unsaturated hydrophile, in the presence of an effective amount of a hydrosilylation catalyst, at least a portion of the reaction taking place in the presence of at least 60 weight percent of an oleaginous composition containing at least 50 weight percent low viscosity organopolysiloxane. When sheared, the crosslinked organosiloxane compositions form a stable, preferably incompatible gel which may be used in turn to form a stable emulsion with large amounts of ordinarily incompatible hydrophillic liquids. The emulsions thus formed are suitable for use in a wide variety of cosmetic products.
Abstract: The present invention pertains to an epoxy-functional organopolysiloxane resin, and an epoxy-functional organopolysiloxane coating composition comprising the epoxy-functional organopolysiloxane resin.
Abstract: The present invention relates to a method of reducing the coefficient of friction of gaskets. The method comprises coating the gasket with a curable silicone composition. The composition contains a curable silicone resin, a catalyst, at least one lubricating filler not soluble in the coating composition and optionally a solvent.
Abstract: Silicone mold release compositions which are a stable blend of hydrophobic-modified organopolysiloxane and an aminoorgano- or mercaptoorgano-functional organopolysiloxane, or a solution in organic solvent of a stable or unstable blend, provide exceptional mold release properties while retaining paintability of molded parts.
Abstract: An organopolysiloxane adhesive contains an organopolysiloxane rubber base, an organopolysiloxane pressure sensitive adhesive, a aliphatic unsaturated-functional M′Q resin, and a polyhydrido-functional organopolysiloxane in an organic solvent, and exhibits differential adhesion between dental impression material and dental impression tray material.
Abstract: Gloss and ease of application of sprayable aqueous organopolysiloxane vinyl protectant emulsions are both improved by the addition of a gloss-improving additive. Protectants may be formulated to achieve higher gloss with the same amount of active organopolysiloxane or the same or higher gloss with less organopolysiloxane. Preferred gloss-improving additives are water soluble organic viscosifiers and/or minor amounts of inorganic, viscosity-increasing particulate solids.
Type:
Grant
Filed:
April 24, 1998
Date of Patent:
April 24, 2001
Assignee:
Wacker Silicones Corporation
Inventors:
Ronald Lee Muntz, Michael Dean Lowery, Bryan Eric Fry
Abstract: Gloss and ease of application of sprayable aqueous organopolysiloxane vinyl protectant emulsions are both improved by the addition of a gloss-improving additive. Protectants may be formulated to achieve higher gloss with the same amount of active organopolysiloxane or the same or higher gloss with less organopolysiloxane. Preferred gloss-improving additives are water soluble organic viscosifiers and/or minor amounts of inorganic, viscosity-increasing particulate solids.
Type:
Grant
Filed:
February 12, 1999
Date of Patent:
March 27, 2001
Assignee:
Wacker Silicones Corporation
Inventors:
Ronald L. Muntz, Michael D. Lowery, Bryan E. Fry
Abstract: Star- and comb-type branched organosilicon compounds containing .omega.-terminated organopolysiloxane branches are readily synthesized by the catalyzed or uncatalyzed reaction of an at least tris(organyloxy)-functional organosilicon compound with a predetermined amount of substantially linear minimally disilanol-functional organopolysiloxane. Well defined, non-resinous, liquid products of low viscosity may be obtained.
Abstract: Asphalt release coatings are prepared by applying an aqueous emulsion containing an organopolysiloxane component, an effective amount of one or more emulsifying surfactants, and most minor amount of a multiple release additive. The compositions exhibit improved release, particularly multiple releases, even with polymer modified asphalt binders.
Abstract: An oil resistant gasket and method for preparing said oil resistant gasket which comprises applying an organic polymeric coating selected from the group consisting of parylene N, parylene D, parylene C and mixtures thereof; to a porous, elastomeric gasket.
Abstract: Aqueous textile treating compositions containing both nitrogen-functional organopolysiloxanes and oligomeric polyisobutylene polymers are as effective as conventional textile treating compositions containing only nitrogen-functional organopolysiloxane, and have improved resistance to yellowing, improved washfastness, and are more cost effective. Stable concentrates containing amino-functional organopolysiloxane, polyisobutylene, and a blend-stabilizing surfactant may be used to form aqueous emulsion and microemulsion fabric softener compositions.
Abstract: RTV-1 silicone sealants resistant to deterioration in the presence of aggressive functional fluids are prepared from an organopolysiloxane component comprising a major amount of silanol-functional organopolysiloxane, a primary or secondary amine-functional crosslinker, and both iron oxide and magnesium oxide, optionally together with auxiliary fillers, adhesion promoters, catalysts, and customary additives. The gasket materials are particularly useful in axle and transaxle seals exposed to fuel efficiency-promoting aggressive lubricants.
Abstract: Liquid foam control compositions provide good control for liquid detergent formulations, while being storage stable both before and after incorporation into liquid detergent.
Abstract: The present invention relates to a wipe-on polish composition which contains no wax or abrasive components. The polish requires minimal effort to wipe out to a thin, glossy, streak-free, hydrophobic film. The polish is comprised of an emulsion that contains an organopolysiloxane and a volatile diluent.