Abstract: There is provided a composition having interpenetrating matrices comprising (a) a first polymer network characterized by nodes interconnected by fibrils and (b) a second polymer network comprising diorganosiloxy units. In another aspect, there are provided compositions comprising an interpenetrating polymer network of polytetrafluoroethylene and polydiorganosiloxane. Methods for making the foregoing compositions are also provided.

Abstract: Treated filler having surface nitrogen groups is added to silicone foam to reduce density.

Abstract: A bis (alkoxysilyl) polyether is produced and utilized as a fabric sizing agent.

Abstract: A method for the selective removal of boron halides and other Lewis acid-type impurities from silicon halides is disclosed. Treatment of contaminated silicon halides with siloxanes, which react with the impurities, allow the distillation of silicon halide which is virtually free from contamination within extremely low limits of detectability.

Abstract: A vulcanizable silicone elastomer composition which has novel crosslinking points comprises (A) 100 parts by weight of a polyorganosiloxane having a polymerization degree of at least 100, wherein the organic groups are selected from monovalent substituted and unsubstituted hydrocarbon groups and are attached to silicon atoms at a rate, on average, in the range of 1.98 to 2.02 per silicon atom and at least two of the organic groups are monovalent hydrocarbon groups possessing at least five carbon atoms and a carbon-carbon double bond issuing from a silicon atom through at least one carbon atom, (B) 5 to 200 parts by weight of an inorganic filler having a specific surface area of at least 50 m.sup.2 /g, and (C) 0.05 to 15 parts by weight of an organic peroxide.

Abstract: There is disclosed a plastic film or metal foil composite sheet containing:(a) a first layer of plastic film or metal foil having firmly adhered to at least one side thereof,(b) a second layer of silicone foam.

Abstract: A torque grease comprising:(A) 100 parts by weight of a polyorganosiloxane represented by the general formula: ##EQU1## wherein R.sup.1 is a C.sub.(1-12) monovalent radical selected from the group consisting of alkyl radicals, alkenyl radicals, and substituted or unsubstituted aryl radicals; a equals 1.9 to 2.7; n is a positive number; and(B) 10 to 200 parts by weight of a polyorganosilsesquioxane represented by the general formula:R.sup.2 SiO.sub.3/2wherein R.sup.2 is a monovalent radical selected from the group consisting of alkyl radicals, alkenyl radicals and substituted or unsubstituted aryl radicals.

Abstract: The present invention relates to a polyorganosiloxane composition and, more particularly, to a polyorganosiloxane composition having good curing properties at room temperature and producing cured materials having good water absorption properties. The polyorganosiloxane composition comprises:(A) a curable silicone rubber composition containing polysiloxane which is liquid at room temperature as a base polymer; and(B) a polymer containing acrylic acid or an alkali metal salt of acrylic acid as a monomer unit.

Abstract: There are provided novel silicone-ester waxes having the general unit formula ##EQU1## where R is hydrogen or an organic radical, R.sup.1 is an ester-containing radical having at least 12 carbon atoms, a and b are independently selected integers from 0 to 3 inclusive, and the sum of a+b has an average value from about 1.0 to about 3.0, with the proviso that there is present at least one R.sup.1 radical.

Abstract: A treatment for finely divided silica reinforcing fillers is provided which utilizes low temperature and hydroxy or alkoxy containing diorganopolysiloxane as the treating agent. The treatment of fillers in this manner facilitates the manufacture and incorporation into silicone rubbers.

Abstract: There are provided substantially trialkylsiloxy terminated polysiloxanes having at least one amino or substituted amino group linked to at least one trifunctional siloxy unit of said polysiloxane through an alkylene or arylene bridge. Emulsions of such polysiloxanes as well as methods for treating fabrics therewith are also provided.

Abstract: The present invention provides curable silicone compositions, comprising:(a) a substantially linear olefinic group-containing polydiorganosiloxane;(b) a resinous olefinic group-containing polysiloxane;(c) a reactive organic monomer;(d) an organohydrogenpolysiloxane, and(e) a hydrosilation catalyst.There are also provided articles of manufacture prepared by coating substrates such as optical fibers with said composition as well as methods for making said curable compositions and articles of manufacture.

Abstract: There is provided a method for preventing premature curing of curable silicone compositions comprising admixing with said curable composition an amount of Lewis base effective to neutralize any Lewis acid present therein.

Abstract: There is provided a room temperature vulcanizable silicone rubber composition which upon curing to the solid, elastic state exhibits improved adhesion to various substrates, comprising:(a) a polydiorganosiloxane wherein the silicon atom at each polymer chain end has bonded thereto at least two hydrolyzable groups,(b) an effective amount of non-chelate condensation catalyst, and(c) an effective amount of metal chelate adhesion promoter.

Abstract: The present invention provides an improved penetration resistant laminate comprising: a plurality of internal and forward penetration resistant thermoplastic resinous laminae of from about 100 mils to about 250 mils in thickness; a back polycarbonate lamina opposite the direction of impact or penetration from about 30 to about 220 mils in thickness; a plurality of compatible adhesive interlayers to bond the laminae; and an internal lamina of glass from about 100 mils to about 250 mils in thickness removed from said back polycarbonate lamina by at least one interposed thermoplastic resinous lamina.

Abstract: Thermoplastic laminae are given scratch and mar resistance on an external face as well as protection from incompatible additives of adjacent adhesive layers on an internal face by a single cross-linked protective coating.

Abstract: A primer layer containing a thermoplastic or thermoset acrylic homogeneously admixed with an organopolysiloxane constituent increases the adhesion of abrasion and solvent resistant organopolysiloxane hardcoats to thermoplastic substrates.

Abstract: The low temperature impact strength of foam thermoplastic articles is increased with the addition of polysiloxane-polycarbonate block copolymer.

Abstract: An abrasion and chemical solvent resistant thermoplastic article is disclosed which has a protective layer of thin glass from about 0.3 mils to about 20 mils in thickness bonded to a thermoplastic substrate by a UV cured adhesive interlayer.

Abstract: A means for decomposing undesirable by-products formed during the nitration by nitric acid only of N--C.sub.1 to C.sub.8 alkyl phthalimides which comprises elevating the temperature of the reaction mix during or following nitration and an improved nitration process incorporating said means.