Abstract: An adhesion promoter which is a silane or polysiloxane having in each molecule at least one organic group possessing aliphatic unsaturated group and at least one organic group possessing amino group or having in each molecule at least one organic group possessing both aliphatic unsaturation and an amino group is useful for improving the adhesion of radiation curable organopolysiloxane compositions to substrates.

Abstract: Hybrid star polymers with acrylic arms and crosslinked polysiloxane cores can be made by a polycondensation of substituent alkoxysilyl groups contained in acrylic ester groups of acrylic block copolymers to form the cores.

Abstract: An epoxy resin composition which comprises a curable epoxy resin, a curing agent, an inorganic filler, and at least one copolymer selected from copolymers obtained by an addition reaction between aromatic polymers containing one or more epoxy groups and one or more alkenyl groups and the specific organopolysiloxanes; copolymers obtained by an addition reaction between aromatic polymers containing one or more epoxy groups and the specific amino group-containing organopolysiloxanes.

Abstract: Organosols of organopolysiloxanes are prepared by adding water-soluble organic solvents or mixtures thereof or water-soluble mixtures of water-soluble and water-insoluble organic solvents to aqueous, colloidal suspensions of organopolysiloxanes obtained by adding at least one alkoxysilane and/or the partial hydrolyzate thereof, and, if appropriate, mixed with an organo(poly)siloxane free of alkoxy groups and having a maximum of 8 siloxane units per molecule, to water in the presence of emulsifiers at a maximum rate of 5 moles of organosilicon compound per hour and per liter of water, and subsequently removing the water by distillation.

Abstract: A composition comprising a multifunctional glycidyl ether having at least three epoxy groups per molecule with a hardening amount of a mixture of a rigid aromatic diamine and an aromatic diaminopolysiloxane can be thermally cured to a compatible composition. Glycidylamines cannot be used in this composition. Optionally, a diglycidyl ether can be included.The cured compositions have higher glass transition temperatures than previously observed with epoxy/silicone systems. They also have improved resistance to atomic oxygen over that shown by epoxy formulations lacking a polysiloxane species therein.

Abstract: Thermoplastic molding compositions are provided which comprise a polyphenylene ether resin alone or in combination with a polystyrene resin modified with a multi-stage polyorganosiloxane/polyvinyl-based graft polymer which exhibit materially enhanced impact strength, flame resistance, moldability and flow properties and other desirable properties without showing surface mottling or a tendancy to delaminate.

Abstract: This material, essentially characterized in that it is flexible, employs simultaneously the two phenomena of in tumescence and endothermicity to obtain optimal protection characteristics maintaining the element to be protected at a temperature below or in the order of 150.degree. C. when it is subjected to thermal attack corresponding to a flame temperature of 700.degree. to 1000.degree. for a duration of at least one hour for a thickness of the material between 10 and 20 mm, comprises a binder (silicone elastomer) in a proportion of 30 to 35% by weight; a reinforcing charge (a metal oxide compatible with said silicone elastomer) in a proportion of 17 to 23% by weight; an active charge (an intumescent agent) in a production of 38 to 45% by weight; and an insulative charge in a proportion of 5 to 10% by weight, these proportions being relative to the total weight of said material.

Abstract: A polish including a film forming wax material and an organopolysiloxane elastomer. The elastomer is in the form of particles mixed with the film forming wax. The particles are spherical and have an average diameter of from about 0.3 um to about 30 um. The polish contains at least one additive selected from the group consisting of organic solvents, silicone oils, and surfactants. The film forming wax material may be one of carnauba wax, montan wax, candelilla wax, ceresin wax, paraffin waxes, and beeswax.

Abstract: Novel siloxane-polyether polymers are provided containing cyclic siloxanes which are useful in silicone surfactants for foam polyurethane foam applications. The novel polymers are prepared by reacting a polyhydridosiloxane polymer with a cyclic polysiloxane containing a vinyl group and with an allyl started polyoxyalkylene polymer in the presence of a platinum catalyst. The resulting polymeric products are highly potent and impart flat breathability profiles to foams when used as surfactants in their preparation.

Abstract: A room temperature vulcanizable organopolysiloxane composition comprising a diorganopolysiloxane blocked with a hydroxyl group at opposite ends of the molecular chain of the diorganopolysiloxane, a silane or siloxane compound having at least three hydrolyzable groups in the molecule, a filler, and a curing catalyst. The composition further comprises a specific type of amide compound whereby the composition is readily released from electric or electronic parts after having been vulcanized and dipped in a hot soldering bath.

Abstract: The present invention relates to a paint composition which contains a silicone resin, a polytetrafluoroethylene polymer, and a polyurethane polymer in combination. The paint composition is useful as a surface coating that can be repeatedly cleaned with strong solvents and which possesses a non-stick surface.

Abstract: A vulcanizable ethylene-propylene rubber composition with improved thermal aging resistance is made from ethylene-propylene rubber, an alkoxysilane such as N-(N-vinylbenzylaminoethyl)-gamma-aminopropyltrimethoxysilane or its hydrochloride, a reinforcing filler, and a vulcanizing agent. These vulcanizable ethylene-propylene rubber compositions can also contain vinyl group-containing organopolysiloxane gum. These compositions cure to rubber with excellent mechanical properties, excellent electrical insulation properties, and thermal aging resistance which makes them suitable for electrical wire insulation.

Abstract: A composition comprising:(i) a crosslinkable thermoplastic resin;(ii) an organic peroxide crosslinking agent; and(iii) a linear polyorganosiloxane having the following recurring unit: ##STR1## wherein R is a saturated aliphatic or aromatic group and each R can be alike or different;a is about 5 to about 100;b is about 1 to about 1000; andthe polyorganosiloxane is terminated at the [CH.sub.2 ].sub.a end with --CH.dbd.CH.sub.2 or hydrogen and at the ##STR2## end with--[CH.sub.2 ].sub.a --CH.dbd.CH.sub.2 or hydrogen provided that at least one --CH.dbd.CH.sub.2 is present.

Abstract: Adhesive compositions comprising blends of polyethylene oxide-grafted silicone polymers with resinous copolymers are disclosed. The adhesive compositions enhance release, in a controlled fashion, of bioactive or chemical agents blended or otherwise dispersed through the compositions. Transdermal drug delivery devices incorporating the adhesive compositions are also disclosed.

Abstract: Acetal copolymers of trioxane with epoxy functional groups are obtained by copolymerizing trioxane with 5,6-epoxy-1,3-dioxepane. The epoxide group in the polymer chain provides a highly reacting functional group for further modification. Acetal copolymers with backbone epoxide groups exhibit toughness and thermal stability. The backbone epoxide groups can also be aminated in a one step hydrolysis-amination process.

Abstract: A polyorganosilsesquinoxane fine powder having a moderate hydrophilicity, which is surface-treated with a block- or graft-copolymer comprising a polyoxyalkylene segment and a polysiloxane segment.

Abstract: A composition cureable to a solid crosslinked polyorganosiloxane comprises:a) a norbornene functional silicone prepolymer having a plurality of groups of the formula: ##STR1## bound to silicone atoms thereof, where R is H or methyl, R.sup.1 is a direct bond of --C(.dbd.O)O-- and R.sup.4 is ethylene, ethenylene, propylene or propenylene,b) a coreactive silicone prepolymer selected from SiH functional silicones, and alkylthiol functional silicones, said polyorganosiloxanes (a) and (b) being present in an equivalent ratio of between 2:1 and 1:2 norbornene to silicon hydride or alkyl thiol groups, andc) an effective amount of a hydrosilation or thiol-ene cure catalyst, respectively.

Abstract: Curable silicone caulk compositions are provided using a nonionically stabilized silanol-terminated polydiorganosiloxane, water, a silane cross-linker, a tin condensation catalyst, and calcium carbonate.

Abstract: A curable polymer composition which comprises:(A) a copolymer comprising a backbone which comprises (1) repeating units derived from at least one monomer selected from the group consisting of alkyl acrylates having 1 to 8 carbon atoms in the alkyl group and alkyl methacrylates having 1 to 8 carbon atoms in the alkyl group and (2) repeating units derived from at least one monomer selected from the group consisting of alkyl acrylates having at least 10 carbon atoms in the alkyl group and alkyl methacrylate having at least 10 carbon atoms in the alkyl groups and (B) an oxyalkylene base polymer having at least one silicon-containing group to the silicon atom of which at least one hydroxyl group or hydrolyzable group is bonded and which is cross linkable through formation of a siloxane bond, which composition has improved transparency and storage stability and can provide a cured material having good weather resistance.

Abstract: A method of obtaining an aqueous silicone emulsion which dries to an elastomer comprises mixing (1) hydroxyl endblocked polydiorganosiloxane free of aliphatic unsaturation, (2) silicon hydride crosslinker, (3) platinum compound catalyst compatible with the polydiorganosiloxane, (4) catalyst inhibitor, (5) anionic or nonionic surfactant, and (6) water and polymerizing the polydiorganosiloxane. These ingredients can be combined in emulsion form following three differing versions of a method of combining the ingredients and polymerizing the polydiorganosiloxane. In each case, the emulsion, which may also contain filler, is useful as a coating or sealant.