Abstract: The present invention provides a novel method of rendering a wallboard water-repellent comprising applying to the wallboard a water-repellent composition comprising a hydrogen siloxane component and a high molecular weight silicone.

Abstract: A thin fluorosilicone elastomer coating which prevents oil weepage problems with silicone rubber gaskets wherein the fluorosilicone elastomer coating contains a vinyl-containing fluorosilicone polymer cured with a hydrogen-containing siloxane/platinum group hydrosilation catalyst curing system used in combination with a peroxide curing agent.

Abstract: A method for producing a room temperature vulcanizable composition that has a high rate of extrusion and a low sag wherein a base mixture of a diorganopolysiloxane and an end stopping cross linking ketoximosilane are reacted prior to being added to a first injection port along an extruder, an inorganic filler being added to said base mixture at a second injection port along the extruder, an M stopped silicone fluid being partitioned into two parts and the first part of said M stopped fluid being added to the filler containing base mixture at a third injection port at the middle of the extruder, and a tin catalyst, an adhesion promoter and the second part of the M stopped fluid being added at a fourth injection port along the extruder said mixture comprising these components being extruded towards the extruder exit port.

Abstract: Substantially branched alkenyl silicone polymer compositions having on average at least two branching points per molecule provide paper release compositions wherein the delamination force is reduced at all delamination speeds.

Abstract: Use of a certain class of acid washed clays enables a fixed bed process for the production of very low viscosity low silanol content silicone fluids to be produced in a fixed bed single reactor process.

Abstract: This invention provides a coating composition which utilizes a free radical initiator and an organic tintability additive which remains substantially unpolymerized even after the remainder of the coating composition is cured. Superior tintability and adhesion to polycarbonate makes this coating particularly suitable for making tinted opthalmic lenses.

Abstract: Novel curable siloxane polymers having integral ultra-violet light absorbers are disclosed which are useful in preparing a variety of commercial silicone products requiring excellent resistance to loss of UV protection due to external forces.

Abstract: Silicone pressure sensitive adhesive compositions are provided which are free of volatile organic solvents. Silicone fluids in the form of cyclic or linear organosiloxanes, and having a boiling point at atmospheric pressure of 250.degree. C. or less, are used in combination with an organopolysiloxane gum and an organosiloxane hydrolyzate of SiO.sub.2 units and triorganosiloxy units.

Abstract: Cold processable heat curable alkenyl silicone rubbers that comprising an alkenyl silicone gum or mixture of alkenyl silicone gums selected from the group of alkenyl silicone gums having the formula:(M.sub.a M.sup.vi.sub.1-a)(D.sup.vi).sub.x (D).sub.y (M.sub.a M.sup.vi.sub.1-a);a process for making such heat curable rubbers, and articles of manufacture made therefrom.

Abstract: A gel-free silica acrylate curable coating composition made from one or more of soluble salts, soaps, amines, nonionic and anion surfactants, acids or mixtures thereof, and a method for producing these compositions.

Abstract: Pressure sensitive silicone adhesive compositions having excellent peel adhesive strength, high tack and excellent quick stick capability are provided. Generally the adhesive composition is made of a MQ resin and a silicone gum, to which a silicone fluid is added. A cure catalyst can then be added to the mixture prior to coating.

Abstract: The invention provides a method for making a curable epoxysilicone composition through the hydrosilation reaction between an ethylenically unsaturated epoxide and an SiH-containing silicone to produce an epoxysilicone product, and catalyzed by a quaternary ammonium, phosphonium or arsonium hexahaloplatinate which does not promote the oxirane ring-opening reaction of either the ethylenically unsaturated epoxide starting material or the epoxysilicone product. The invention also provides for a curable epoxysilicone composition made by the above method.

Abstract: Epoxysilicone polymers partially or completely functionalized by a fluorescent, photo-sensitizing, or simultaneously fluorescing and photo-sensitizing substituent bonded to the silicone polymer by means of a carbon oxygen carbon bond provide fluorescent dye marking compounds for silicone compositions that are particularly useful in determining the quality of release coatings made therewith.

Abstract: Silicone adhesive compositions having excellent quick stick, peel and tack adhesion properties are provided. Generally the adhesive composition is the reaction mixture of a silanol-containing siloxane resin, a silicone polymer gum, and a silicone fluid containing functionality capable of reacting with silanol and silanol-like groups; optionally, a solvent; and a cure catalyst are added.

Abstract: Microemulsion compositions comprising microemulsifiable high viscosity amino silicone fluids or gums and a surfactant having a high phase inversion temperature, the microemulsions formed therewith, a means for preparing said microemulsions, and personal care products comprising said microemulsions.

Abstract: An addition curable silicone pressure sensitive adhesive composition having high lap shear strength particularly at elevated temperatures is described; containing (A) an aromatic soluble, MQ resin or resinous copolymer having R.sub.3 SiO.sub.1/2 and SiO.sub.4/2 ; (B) an alkenyl-containing polydiorganosiloxane having a viscosity of at least about 3,000 centipoise at 25.degree. C.; (C) a set of multi-functional silicones as crosslinkers; (D) from 0 to about 100 parts by weight of a reaction mixture containing from 60 to 100 parts by weight of Component (A) and from about 40 to 0 parts by weight of Component (B); (E) a hydrosilylation catalyst; and optionally (F) from 0 to about 40% by weight of an organic solvent.

Abstract: An extrudable composition formed of a blend of a polymer and a finely divided filler is prepared by combining the materials under conditions of high shear forces resulting in a composition which when diluted to a selected level has an application rate which is relatively higher than a composition having the same relative proportions of polymer and filler combined under conditions of low shear, the high shear forces reducing the aggregate size. The invention is also directed to a method for reducing the initial average aggregate size of a filler dispersed in a polymer by subjecting the mixture to high shear forces in a high intensity mixer.

Abstract: A process for treating fillers, preferably precipitated silica, to improve the physical property profile of heat curable and room temperature vulcanizable silicone rubbers and a composition for room temperature vulcanizable rubbers comprising the silica filler treated by the process of the invention.

Abstract: A method for polymerizing polysilicone precursors via emulsion polymerization to yield transparent oil in water polysilicone microemulsions suitable for personal care applications is disclosed.