Abstract: A silicone modified polyetherimide which contains a polyetherimide and a flow-modifying amount of a polyorganosiloxane. Modification of polyetherimides in accordance with this invention results in lower torsional forces and increased throughput rates in extrusion and injection molding operations.

Abstract: A flame-resisting polycarbonate resin composition is disclosed, comprising (a) 100 parts by weight of an aromatic polycarbonate resin comprising (i) a copolymer of a halogenated 4,4'-dihydroxydiphenylalkane and a non-halogenated 4,4'-dihydroxydiphenylalkane or (ii) the copolymer (i) or a homopolymer of the non-halogenated 4,4'-dihydroxydiphenylalkane having incorporated therein a homo-oligomer of the halogenated 4,4'-dihydroxydiphenylalkane and/or a co-oligomer of the halogenated 4,4'-dihydroxydiphenylalkane and the non-halogenated 4,4'-dihydroxydiphenylalkane, (b) 0.001 to 5.0 parts by weight of an organic potassium phosphate, (c) 0.001 to 0.5 parts by weight of an phosphorous ester compound, and (d) 0 to 0.5 part by weight of an organosilicone compound. The resin composition has an improved viscosity characteristic and is, therefore, prevented from dripping during combustion, and does not suffer change in hue or reduction in molecular weight during molding.

Abstract: The precursor composition of silicon carbide fibers provided by the invention has greatly improved spinnability and can be spun at a very high spinning velocity to give a green filament which has a much larger tensile strength than those of conventional precursor materials and is capable of giving silicon carbide fibers having increased tensile strength by the infusibilization and calcination of the green filament of the composition under tension. The composition comprises from 80 to 99.9 parts by weight of a polycarbosilane polymer and from 20 to 0.01 part by weight of a silmethylene polymer having a degree of polymerization larger than the specified lower limit.

Abstract: An antistatic polyacetal resin composition is provided with vastly improved wear properties by the inclusion of small amounts of a polydiorganosiloxane. The polyacetal resin composition is provided with an antistatic agent comprising a polyol fatty acid ester such as glyceryl monostearate and a glycol ether or ester such as polyethylene glycol.

Abstract: Power transmission belts have a cushion stock which improves the durability of the belts. The cushion stock contains a melamine and a silane and preferably cotton reinforcement and silica. 2-thiazolidinethiones can be used as accelerators in the cushion stocks.

Abstract: This invention relates to a dispersion of a functional silicone modifier in a curable epoxy resin wherein emulsification of said silicone is aided by a siloxane-polyoxyalkylene copolymer. The silicone modifier comprises an alpha,omega-functional polydimethylsiloxane having carboxyl, amine or epoxide endgroups. A method of using the dispersion to improve the impact resistance of the resin, when the latter is cured, is described.

Abstract: Coating compositions and molding materials containing a polyester group containing siloxane to enhance spreading and increase lubricity, having the formula ##STR1## wherein R.sub.1 represents alkyl groups with 1 to 30 carbon atoms which may be replaced partially by other groups,A and B each represent --CH.sub.3 or R.sub.2 --Z--,R.sub.2 represents an aliphatic and/or cycloaliphatic and/or aromatic polyester group free of Zerewittinoff H atoms, having an average molecular weight of 200 to 3000, and containing at least three ##STR2## groups, Z represents a divalent group connecting the silicon atom with the R.sub.2 group,x is 3 to 250,y is 0 to 50,and in which the average molecule contains at least one R.sub.2 --Z-- group and the ratio of the number of R.sub.2 --Z-- groups to x is 1:2 to 1:40.

Abstract: Siloxane fluid blends containing a thiofunctional polysiloxane fluid and an organopolysiloxane fluid are stabilized against degradation in the presence of kaolin clays at elevated temperatures by adding an amine containing compound to blends of siloxane fluids.

Abstract: Thiofunctional polysiloxane fluids are stabilized against degradation in the presence of kaolin clay by adding an amine containing compound to the thiofunctional polysiloxane fluids.

Abstract: What is disclosed are organopolysiloxane release coatings which are curable on a substrate and which consist of a base siloxane copolymer containing CH.sub.3 SiO.sub.3/2 units; C.sub.6 H.sub.5 SiO.sub.3/2 units, C.sub.6 H.sub.5 (CH.sub.3)SiO units and (C.sub.6 H.sub.5).sub.2 SiO units; CH.sub.3 SiO.sub.3/2 ; a fluid polysiloxane, and a curing agent. They are especially useful on commercial and household cookware and bakeware.

Abstract: This invention provides tubings formed of a polymeric composition comprising a thermoplastic elastomeric hydrocarbon black copolymer and a polysiloxane having a kinematic viscosity of 20 to 10.sup.6 centistokes at room temperature, the polysiloxane constituting from about 0.1 to 12 percent by weight of the composition. The tubings can be used in medical applications.

Abstract: High impact, high modulus thermoplastic molding compositions comprise(a) an aromatic carbonate polymer;(b) a linear polyester;(c) a fibrous reinforcing agent essentially free of any sizing agent; and(d) a small amount of a polysiloxane having a substantial content of Si--H bonds.

Abstract: A method for the release of air bladders during tire construction involves the application of a bladder release composition directly upon the expandable air bladder in the tire production machinery. The bladder release composition typically consists of a blend of siloxanes, which when combined, provide significant air bleed qualities.

Abstract: A composition which is heat curable to give an elastomer of improved properties comprising(a) an organopolysiloxane polymer having a viscosity of 1,000,000 to 200,000 mPas at 25.degree. C. and comprising the structural unit ##EQU1## wherein R is a hydrocarbon radical or a halohydrocarbon radical, anda is between about 1.95 and 2.01,(b) a polycarbodiimide-polysiloxane copolymer comprising a polysiloxane continuous liquid phase containing a discontinuous phase of finely dispersed polycarbodiimide particles produced by condensing a diisocyanate in the polysiloxane,(c) a curing catalyst, and(d) a filler,the polycarbodiimide comprising about 0.1 to 80% by weight of (a) plus (b). Upon curing, the permanent set of the elastomer is reduced and/or the resistance to hydrolytic degradation is improved.

Abstract: A method and composition for the release of air bladders during tire construction is disclosed. The method involves the application of a bladder release composition directly upon the expandable air bladder in the tire production machinery. The bladder release composition typically consists of a blend of siloxanes, which when combined, provide significant air bleed qualities.

Abstract: The invention provides a very simple but effective means for preventing surface oxidation of fine metal powders by coating the metal powder with an organic dye. This method of surface-oxidation prevention is particularly useful for the preparation of a so-called plastic magnet which is prepared by uniformly blending a dye-coated fine powder of a magnetic alloy such as a rare earth-cobalt based permanent magnet with a thermoplastic resin such as a nylon or polyphenylene sulfide resin followed by molding the resin-powder blend into a magnet form. In addition to the remarkably improved magnetic properties of the thus prepared plastic magnets as a result of high loading and absence of degradation by oxidation, the danger of spontaneous ignition of the magnet powder in molding can be eliminated almost completely. Surface treatment of the dye-coated magnet powder with a silicone fluid gives further improved results.

Abstract: High impact, high modulus thermoplastic molding compositions comprising:(a) a linear polyester;(b) a fibrous reinforcing agent essentially free of any sizing agent; and(c) a small amount of a polysiloxane having a substantial content of Si-H bonds.

Abstract: The present invention relates to a silicon composition that cures to a silicone elastomer having a tear strength of abouve 100 p.i. comprising a blend of vinyl-containing gums, a silica reinforcing filler, a hydride cross-linking agent, and a peroxide curing catalyst.

Abstract: One-part moisture-curable polyurethane adhesive, coating, sealant, or casting compositions containing a blend of isocyanate-functional prepolymer, terpene-phenolic resin, and silane compound. The compositions adhere to a variety of unprimed substrates, and resist moisture and UV exposure.

Abstract: The present invention provides a room temperature curable polyorganosiloxane composition comprising:(A) 100 parts by weight in total of:(1) a polydiorganosiloxane of the general formula: ##STR1## (2) a silane of the general formula:R.sub.b.sup.3 Si(OR.sup.4).sub.4-b(B) 0.01 to 10 parts by weight of a curing catalyst;(C) 0.5 to 10 parts by weight of a nitrogen-containing silicon compound in which the nitrogen atom is bonded with a silicon atom through one or more carbon atoms and said nitrogen atom is further bonded directly with said silicon atom or another silicon atom; and(D) 0.05 to 50 parts by weight of a polyoxyalkylene chain-containing compound.

Abstract: Thermoplastic compositions of a polyphenylene ether resin and a precompounded blend of a poly(arylolefin-olefin), an organopolysiloxane and a linking agent are described. The precompounding of the organopolysiloxane with a poly(arylolefin-olefin) enables the compatible incorporation of larger amounts of organopolysiloxane than otherwise possible, and the resulting novel composition provides various desirable properties.

Abstract: An aqueous composition for coating substrates which contains polymeric organic film formers containing a deaerating effective amount of a linear polymer having at least five side groups, each of which contains a silicon atom which is linked by way of a divalent hydrocarbon group to the polymer, each silicon atom carrying at least one R.sup.1 group of formulaO--[C.sub.n H.sub.2n O--].sub.x Qin which n is 2 to 8, x is 1 to 10 and Q is an alkyl radical with 1 to 10 carbon atoms, an aryl radical, an alkaryl radical, or an acyl radical with 2 to 18 carbon atoms, and the sum of the carbon and oxygen atoms of R.sup.1 is not less than 5, as well as the linear polymers themselves. Methods for preparation of such materials are also disclosed as well as their use.

Abstract: A textile finishing composition comprising (1) a diluent and (2) a durable press resin composition containing (a) an aminoplast resin and (b) an aldehyde. The textile finishing composition is combined with an acid catalyst and applied to textile materials to impart softness, improved wetting properties and durable press properties.The textile finishing composition is applied at lower than normal dry add-on levels to textile materials to provide textile materials having lower levels of formaldehyde.

Abstract: A one-component alkoxy-functional RTV silicone rubber composition which is made shelf-stable by the incorporation of scavengers in the composition to absorb hydroxy groups. The present composition is made low modulus by the incorporation of various additives in the composition such as a trifunctional fluid and a linear diorganopolysiloxane fluid. There is also disclosed the use of sag control additives in the uncured composition to impart to it thixotropic properties.

Abstract: Blends of polyols and polyamines containing internal mold release agents consisting of certain polysiloxanes having pendant organic groups which have functional hydroxyl, amino or mercapto groups are useful in preparing mold releasable resin moldings when made by the reaction injection molding technique.

Abstract: The invention is directed to a liquid polyisocyanate dispersions containing an unreacted polysiloxane mold release agent which has isocyanate reactive groups. Specifically, the invention is directed to polyol modified diphenylmethane diisocyanates having dispersed therein a polysiloxane compound having pendant organic chains which contain at least one hydroxyl, amino or carboxyl functional group and a silicone dispersing or inhibiting agent substantially free of isocyanate reactive groups.

Abstract: A continuous process for incorporating additives into a thermoplastic fluid blend is provided; said additives typically being sensitive to the temperature at which the blend is produced, said process comprising the steps of blending a high viscosity silicone fluid and thermoplastic composition initially and feeding the additives with more thermoplastic into the extruder for blending.

Abstract: A flame retarded acrylonitrile-butadiene-styrene composition having improved Izod impact strength and improved light stability. The acrylonitrile-butadiene-styrene composition of the present invention contains a flame retardant amount of a halophenoxyalkylsilane. The preferred halophenoxyalkylsilane is bis-(2,4,6-tribromophenoxy)dimethylsilane. Antimony oxide may optionally be present.

Abstract: A flame retarded high impact polystyrene composition having improved izod impact strength. The high impact polystyrene composition of the present invention contains a flame retardant amount of a halophenoxyalkylsilane. The preferred halophenoxyalkylsilane is bis-(2,4,6-tribromophenoxy)dimethylsilane. Antimony oxide may optionally be present.

Abstract: A low temperature curing composition prepared from an essentially silicon-free polymer and a silicon group-containing material is improved by utilizing a silicon group-containing material which is a hydrolyzable organosilicon group-containing polymer which is non-gelled and formed from an essentially silicon-free polymer having isocyanate or active hydrogen functional groups and an organosilicon group-containing material having functional groups reactive with the isocyanate and active hydrogen.

Abstract: A high molecular weight stabilized polymer composition containing p-polyphenylene sulfide and a siloxane.

Abstract: A method of continuously producing blends of thermoplastic polymers and high viscosity silicone fluids is provided by injecting the silicone fluid into an extruder where the thermoplastic polymers are molten. The dispersion of the silicone fluid can be controlled by adjusting the blending temperature and blends having superior engineering properties and flame retardance produced.

Abstract: This invention provides liquid coating compositions comprising (a) a film-forming component comprising at least one organosiloxane block copolymer wherein the molar ratio of phenylsiloxane units to other units present in the block copolymer is greater than 0.35 to 1, and (b) a solvent comprising at least 45% by weight of a cyclic polydimethylsiloxane of the formula [(CH.sub.3).sub.2 SiO].sub.x where the average value of x is from 3 to 8 and where said organosiloxane block copolymer constitutes no more than 60% of the combined weight of the copolymer and solvent. Using the present compositions, relatively thin coatings of the block copolymer can be applied to cured polyorganosiloxane elastomers and a variety of synthetic organic polymers.

Abstract: Organic peroxide curable polydiorganosiloxane compositions having improved release from metal molds upon curing are disclosed. In addition to the conventional high molecular weight polydiorganosiloxane gum, reinforcing filler, structure control additives, and curing agent, the improved compositions of this invention contain from 0.05 to 3 parts by weight of a polydiorganosiloxane fluid having methyl groups and carboxyfunctional groups as substituents.

Abstract: A silicon rubber mixture for surgical embolization composed of(a) a linear, low viscosity polysiloxane selected from the group consisting of dialkyl, alkylaryl, alkenylalkyl, and diaryl polysiloxanes having reactive functional groups selected from the group consisting of hydroxy, acyloxy, alkoxy and amino;(b) a cyclic dialkyl polysiloxane having the formula [R.sub.2 SiO].sub.4, wherein R is alkyl; anda pharmaceutically acceptable iodo-containing organosilicium X-ray contrast material or non-metallic organic X-ray contrast material. The mixture can be used in cerebrovascular surgery and general surgery for sugical embolization with the aid of a catheter.

Abstract: A mold release composition consisting essentially of:(A) a fluorine-containing polyether comprising 3-perfluoroalkyl-1,2-epoxypropane having the formula ##STR1## wherein R.sub.f represents a perfluoroalkyl group containing from 5 to 13 carbon atoms and(B) at least one additive selected from the group consisting of a silicone oil, silicone varnish, a wax and a highly fluorinated organic compound having a boiling point above 100.degree. C.

Abstract: An improved silicone emulsifier composition is disclosed which is particularly useful for preparing thermally stable, solids-free invert emulsions for the deep well-drilling art. The emulsifier composition comprises a surface active polydiorganosiloxane bearing one or more polyoxyalkylene radicals and one or more hydrocarbon radicals having from 6 to 18 carbon atoms and a resin component comprising (CH.sub.3).sub.3 SiO.sub.1/2 siloxane units and SiO.sub.4/2 siloxane units. Improved invert emulsions and a method for their preparation are also disclosed. The invert emulsions comprise the improved silicone emulsifier of this invention as well as a brine discontinuous phase and a liquid hydrocarbon continuous phase.

Abstract: The present invention relates organopolysiloxane molding compositions which are capable of storage in the absence of moisture and which crosslink to give elastomers after the admission of water or steam, and are based on .alpha.,.omega.-dihydroxyorganopolysiloxanes and substances which produce crosslinking, a short-chain siloxane of the general formula ##STR1## being added, in addition to customary additives.

Abstract: A silicone rubber composition for electrical connector housings having increased resistance to tracking and the ability to cure the damage caused by tracking should it occur. A heat during silicone rubber and a non-curing silicone oil incompatible with the silicone rubber are combined with the liquid oil dispersed throughout the solid rubber and molded into desired shapes.

Abstract: A low modulus room temperature vulcanizable silicone rubber composition with a good shelf life comprising a silanol containing polysiloxane, a filler, an acyloxy functional silane as the cross-linking agent and as the catalyst a compound which is selected from the class consisting of zinc salts and zirconium salts or a co-catalyst system comprising as one co-catalyst a tin salt of carboxylic acid and as the other co-catalyst either a zinc salt or a zirconium salt of a carboxylic acid.

Abstract: There is provided a silicone film-forming composition and method for forming dust-resistant films from such compositions which are comprised of a condensation product of a benzene soluble polysiloxane and a silanol terminated polydiorganosiloxane in combination with a mixed solvent comprised of a volatile organosilicon compound and a hydrocarbon solvent.

Abstract: The present invention relates to dimedone functional self-bonding room temperature vulcanizable silicone rubber compositions. The self-bond additive is selected from silyl maleates, silyl fumarates, silyl succinates, silyl isocyanurates and mixtures thereof. Preferably the self-bonding additive is prereacted with the cross-linking agent before they are incorporated into the RTV composition. This prereaction of the self-bonding additive and the cross-linking agent imparts shelf-stability to the composition.

Abstract: Phenyl-containing organopolysiloxane fluids characterized by the formula, ##STR1## wherein Ph is phenyl, R is hydrogen, trimethylsilyl or mixtures thereof and wherein x and y have a value sufficient to provide a phenyl content of from about 7 weight percent to about 80 weight percent are provided. Also provided are polycarbonate compositions comprising these novel phenyl containing organopolysiloxane fluids.

Abstract: Pigmented coating solutions are disclosed which deposit coatings possessing improved resistance to ultraviolet radiation-induced auto-oxidation. These solutions contain organic solvent, including aromatic hydrocarbon solvent, having dissolved therein an aromatic hydrocarbon-soluble, normally liquid, polysulfide or polydisulfide derivative having terminal -SH groups which have been reacted with a monofunctional reactant providing a C.sub.1 -C.sub.22 alkyl terminal group to provide an essentially nonreactive derivative. The solvent also has dissolved therein a polar polymeric binder (preferably thermosetting) which degrades by a photo-oxidative mechanism and which has only limited compatibility with the derivative. The pigment protects the bulk of a deposited coating, and the limited compatibility causes a heated film of the coating solution to stratify as the solvent evaporates to concentrate the derivative at the surface of the cured coating to protect the same.

Abstract: A color deepening agent comprises (a) an aqueous resin composition obtained by polymerizing a monomer having a polymerizable unsaturated bond, in the presence of a polyurethane emulsion having a thermosetting reactivity, the refractive index of a dry film of said aqueous resin composition being lower than 1.50, and (b) at least one compound selected from the group consisting of silicon compounds and fluorine compounds.

Abstract: A coating composition based on a polysiloxane resin-forming precondensate, an epoxy resin, a fluorocarbon copolymer and a multifunctional amine catalyst provides non-stick coatings that can be cured at low temperatures such as 107.degree. C.

Abstract: An aqueous composition for forming a release coating layer on a substrate, comprising 100 parts by weight (solids basis) of a mixture of aqueous components of polysiloxanes and from about 20 to 100 parts by weight (solids basis) of an aqueous resin having film-forming ability, wherein the non-volatile content is from about 1 to 60% by weight. The aqueous composition is applied onto a non-permeable substrate to provide a substrate having thereon a release coating layer, which is suitable for use in the production, for example, of a surface protective sheet or tape, and a pressure-sensitive sheet or tape.

Abstract: Fiber-treating compositions are disclosed which contain two types of organofunctional polysiloxanes, one bearing amino-functional organic groups and polyoxyalkylene groups and the other bearing either carboxy-functional organic groups or epoxy-functional groups, in addition to polyoxyalkylene groups.These compositions are useful for durably treating fibers to provide several benefits such as antistatic character, moisture/perspiration absorbability, stain resistance, pliability, smoothness, crease resistance and compression recovery.

Abstract: High impact, high modulus thermoplastic molding compositions comprise(a) an aromatic carbonate polymer;(b) a fibrous reinforcing agent essentially free of any sizing agent; and(c) a small amount of a polysiloxane having a substantial content of Si-H bonds.

Abstract: Oil-in-water and water-in-oil emulsion hard surface coating compositions containing a solvent within a specified solubility parameter, silicone fluids, an acrylic polymer soluble in the solvent, surfactants, water and optionally waxes and abrasives. The compositions have excellent detergent resistance, have good gloss and buff properties.