Abstract: A method of preparing organosilicon compositions by heating various mixtures of (i) dimethylcyclosiloxanes or methylhydrogencyclosiloxanes, (ii) homopolymeric and copolymeric cyclosiloxanes containing a C5 or more carbon atom containing group, and (iii) homopolymeric and copolymeric cyclosiloxanes containing an oxyalkylene segment, in the presence of a catalyst, at a temperature and for a time sufficient to cause polymerization of cyclosiloxanes (i) to (iii) to the desired organosilicon composition.

Abstract: Three-dimensional silicone elastomers having polyether and higher alkyl functionality in their molecules form networks of crosslinked linear siloxanes with polyether and olefin containing repeating units, and these silicone elastomers can be used as emulsifiers for making O/O and three-phase aqueous emulsions. One of the oil phases is a silicone oil, while the other oil phase is an organic oil such as mineral oil or castor oil. These emulsions of two and three mutually insoluble liquids are useful in personal and health care applications.

Abstract: One composition is a non-aqueous polar solvent-in-oil emulsion containing a non-aqueous polar solvent phase dispersed in a silicone oil continuous phase by an emulsifier. A second composition is a non-aqueous polar solvent-in-oil-in-water multiple emulsion of the type PS1/O/W which contains a non-aqueous polar solvent phase PS1 dispersed in a silicone oil as a first continuous phase of a primary emulsion PS1/O by an emulsifier. The primary emulsion PS1/O is dispersed in a second continuous aqueous phase W to form multiple emulsion PS1/O/W. A third composition is a non-aqueous polar solvent-in-oil-in-non-aqueous polar solvent multiple emulsion of the type PS1/O/PS2 which contains a non-aqueous polar solvent phase PS1 dispersed in a silicone oil as a first continuous phase of a primary emulsion PS1/O by an emulsifier. The primary emulsion PS1/O is dispersed in a second continuous non-aqueous polar solvent phase PS2 to form multiple emulsion PS1/O/PS2.

Abstract: A new composition of matter is a blend of (i) a crosslinked elastomeric silicone polyether and (ii) a crosslinked elastomeric silicone containing alkyl groups having 3-40 carbon atoms. The new composition can be used in preparing water-in-oil emulsions, and clear solutions containing an oil(s) or an oil-soluble active ingredient(s).

Abstract: Oil-soluble vitamins such as vitamin A and vitamin E can be entrapped in the oil phase of an elastomeric silicone polyether. The vitamin entrapped oil phase can then be emulsified and stabilized without requiring the use of other surfactants. The vitamin entrapped oil phase and water-in-oil emulsions prepared from the vitamin entrapped oil phase are useful in water-based skin and cosmetic compositions.

Abstract: Three-dimensional silicone elastomers having both polyether and higher alkyl functionality present in their molecules are in the form of networks of crosslinked linear siloxanes with polyether and olefin containing repeating units. Representative units are EO7 and EO12 for the polyether functionality, and C10, C12, and C18 alkyl functionality for the olefin. These gelled molecules are multipurpose type materials, and consequently they are capable of being useful in a variety of multiphased formulations in personal and health care applications.

Abstract: One composition is a non-aqueous polar solvent-in-oil emulsion containing a non-aqueous polar solvent phase dispersed in a silicone oil continuous phase by an emulsifier. A second composition is a non-aqueous polar solvent-in-oil-in-water multiple emulsion of the type PS1/O/W which contains a non-aqueous polar solvent phase PS1 dispersed in a silicone oil as a first continuous phase of a primary emulsion PS1/O by an emulsifier. The primary emulsion PS1/O is dispersed in a second continuous aqueous phase W to form multiple emulsion PS1/O/W. A third composition is a non-aqueous polar solvent-in-oil-in-non-aqueous polar solvent multiple emulsion of the type PS1/O/PS2 which contains a non-aqueous polar solvent phase PS1 dispersed in a silicone oil as a first continuous phase of a primary emulsion PS1/O by an emulsifier. The primary emulsion PS1/O is dispersed in a second continuous non-aqueous polar solvent phase PS2 to form multiple emulsion PS1/O/PS2.

Abstract: Elastomeric silicones, especially elastomeric silicone polyethers, are prepared by combining and reacting (A) an ≡Si—H containing polysiloxane, (B) a mono-alkenyl polyether, (C) an active ingredient such as a vitamin, antimicrobial agent, sunburn prevention agent, astringent, or sex hormone, (D) an &agr;,&ohgr;-unsaturated hydrocarbon, (E) a platinum catalyst, and (F) an oil. The reaction of components (A)-(F) is allowed to continue, forming a crosslinked three-dimensional gelled network of the elastomeric silicone polyether containing the active ingredient and the oil. The compositions are useful in personal and health care applications, personal hygiene, and household cleaning applications.

Abstract: The present invention relates to a method of making a silicone polyether comprising (I) reacting a mixture comprising an olefin functional polyether, an organohydrogensiloxane, and a homogeneous transition metal hydrosilylation catalyst, and (II) subjecting the product of (I) to hydrogen gas. The method of this invention reduces the amount of olefinic species present which are precursors to odorous compounds. Thus the method of this invention reduces the amount of odor in the silicone polyether product. These odors are objectionable, particularly in personal care applications.

Abstract: One composition is a non-aqueous polar solvent-in-oil emulsion containing a non-aqueous polar solvent phase dispersed in a silicone oil continuous phase by an emulsifier. A second composition is a non-aqueous polar solvent-in-oil-in-water multiple emulsion of the type PS.sub.1 /O/w which contains a non-aqueous polar solvent phase PS.sub.1 dispersed in a silicone oil as a first continuous phase of a primary emulsion PS.sub.1 /O by an emulsifier. The primary emulsion PS.sub.1 /O is dispersed in a second continuous aqueous phase W to form multiple emulsion PS.sub.1 /O/W. A third composition is a non-aqueous polar solvent-in-oil-in-non-aqueous polar solvent multiple emulsion of the type PS.sub.1 /O/PS.sub.2 which contains a non-aqueous polar solvent phase PS.sub.1 dispersed in a silicone oil as a first continuous phase of a primary emulsion PS.sub.1 /O by an emulsifier. The primary emulsion PS.sub.1 /O is dispersed in a second continuous non-aqueous polar solvent phase PS.sub.2 to form multiple emulsion PS.sub.

Abstract: A method of thickening solvents involves reacting (A) an .ident.Si--H containing polysiloxane with (B) an alkene such as an alpha, omega-diene; conducting the reaction in the presence of a platinum catalyst and (C) a solvent; continuing the reaction until a gel is formed by crosslinking and addition of .ident.Si--H across double bonds in the alpha, omega-diene; adding additional solvent and a post cure terminating agent to the gel; and subjecting the solvent, the post cure terminating agent, and the gel to shear force until a paste is formed. The post cure terminating agent is an amino acid ester, preferably a sulfur containing amino acid ester, such as methionine methyl ester, methionine ethyl ester, cysteine methyl ester, cysteine ethyl ester, and cystine dimethyl ester.

Abstract: A curable organosiloxane-polyisobutylene composition comprising 20 to 87 weight percent of a polyisobutylene comprising at least 2 alkenyl groups per molecule, 0.4 to 70 weight percent of a polyorganosiloxane comprising at least 2 silicon-bonded alkenyl groups per molecule, 7 to 50 weight percent of a treated reinforcing silica filler, an amount sufficient to cure the composition of an organohydrogensiloxane crosslinker, and a platinum-group metal hydrosilation catalyst in an amount sufficient to effect curing of the composition. Cured elastomers prepared from the compositions can have improved resistance to gas and vapor permeability.

Abstract: A multiple emulsion of the type W.sub.1 /O/W.sub.2 is made by first preparing a primary emulsion W.sub.1 /O using a silicone fluid as the oil phase (O), and an elastomeric silicone polyether as an emulsifier, for dispersing water phase W.sub.1 into oil phase (O). The primary emulsion W.sub.1 /O is then added and dispersed into a final continuous water phase W.sub.2 to form a multiple emulsion W.sub.1 /O/W.sub.2. The multiple emulsions are useful for treating the hair, the skin, or the underarm areas of the human body. Vitamins or drugs can be included in the oil phase (O) or in either aqueous phase W.sub.1 or W.sub.2 to enhance the benefits of the multiple emulsions in personal care applications.

Abstract: Silicone gels are made by reacting an .tbd.Si--H containing polysiloxane with an alpha-olefin and an alpha, omega-diene. The reaction is conducted in the presence of a platinum catalyst and in the presence of a low molecular weight silicone oil. First, an .tbd.Si--H containing polysiloxane is grafted by long chain alkyl groups from the alpha-olefin onto the .tbd.Si--H containing polysiloxane, and then crosslinked with double bonds in the alpha, omega-diene, in the presence of the low molecular weight silicone oil. The formed silicone gel can then be crumbled into a silicone powder using mechanical force. When additional amounts of the low molecular weight silicone oil are added to the gel, and the silicone oil and the gel are subjected to shear force, a silicone paste can be formed.

Abstract: Low molecular weight siloxane fluids are thickened by silicone elastomers. The silicone elastomers are made by crosslinking reactions of .tbd.Si--H containing siloxanes and an unsaturated hydrocarbon such as an alpha, omega-diene, in the presence of a low molecular weight siloxane fluid. The .tbd.SiH siloxane is first partially reacted with a mono-alkenyl functionalized polyether. It is then crosslinked by the alpha, omega-diene, in the presence of the low molecular weight siloxane fluid. An elastomer, i.e. gel, with polyether groups is produced. The elastomer can be swollen with the low molecular weight siloxane fluid under shear force, to provide a uniform silicone paste. The silicone paste has excellent spreadability upon rubbing, and possesses unique rheological properties in being thixotropic and shear thinning. The silicone paste can be easily emulsified with water to form a stable uniform emulsion, without using a surfactant to allow normally immiscible materials to become intimately mixed.

Abstract: A method for preparing organopolysiloxane bases with high levels of fillers. The present inventors have found that by mixing the components of the base at a temperature below about 60.degree. C. for a period of time sufficient to effect essentially a homogeneous blend, a base composition is formed which can be further blended with a platinum group metal-containing catalyst, an organohydrogensiloxane, and optionally an inhibitor to form a curable liquid silicone rubber (LSR) composition. The curable LSR composition has improved flow characteristics and improved shelf life when compared to similar materials where the base is prepared at temperatures above about 60.degree. C. The improved flow characteristics allows larger quantities of fillers to be incorporated into the curable LSR composition while still maintaining acceptable flow characteristics.

Abstract: Encapsulated aluminum salts are produced by combining and heating an aqueous aluminum salt selected from aluminum halohydrate, aluminum nitrohydrate and mixtures thereof; a hydrophobic liquid; and a carboxylate. The mixture is heated until substantially all of the free water has been removed. The encapsulated aluminum salts precipitate out after the removal of the water. The encapsulated aluminum salts are useful in deodorant and antiperspirant compositions.

Abstract: Silicone gels are made by reacting an .tbd.Si--H containing polysiloxane with an alpha, omega-diene. The reaction is conducted in the presence of a platinum catalyst and in the presence of a low molecular weight silicone oil. The reaction is continued until a gel is formed by crosslinking and addition of .tbd.Si--H across double bonds in the alpha, omega-diene. The silicone gel can then be crumbled into a silicone powder using mechanical force. When additional amounts of low molecular weight silicone oil are added to the gel, and the silicone oil and the gel are subjected to shear force, a silicone paste can be formed.