Abstract: The present invention is directed to silicone formulations which are capable of being rapidly cured to tough elastomeric materials through exposure to UV radiation. The cured products demonstrate high resistance to flammability and combustibility.

Abstract: The present invention relates to rubber compositions containing an elastomer having olefinic unsaturation and a silica-formamide complex.

Abstract: Radiation-curable compositions, having high elongation at break and toughness after cure can include the following pre-mixture components: a) a polymer, oligomer or monomer having at least one (meth)acrylate functional group; b) an oligomer or monomer, exclusive of (meth)acrylate functional groups, having an ethylenically unsaturated functional group; and c) an elongation promoter; wherein the composition, after radiation-cure, has an elongation at break of at least about 200%. Glass substrates and optical fibers are coated with the radiation-curable composition. Monofilament fiber or a plurality of fiber filaments, such as sewing thread, are coated with the radiation-curable binder composition, which after cure, demonstrates high elongation at break.

Abstract: A curable silicone resin composition contains (A) 100 parts by weight of a silicone resin having condensation-reactive group, (B) 1 to 100 parts by weight of an inorganic fine powder, (C) 0.5 to 50 parts by weight of a silazane compound; and (D) an arbitrary amount of an organic solvent. The curable silicone resin composition cures to form a cured coating film with excellent water-repellent properties.

Abstract: A mixture of a first aluminum hydroxide surface treated with a silicon-containing compound and having a mean particle size of 5-20 &mgr;m and a second aluminum hydroxide surface treated with a silicon-containing compound and having a mean particle size of 0.1-2.5 &mgr;m is blended in a silicone rubber composition comprising an organopolysiloxane, finely divided silica, and an organic peroxide. The silicone rubber composition cures into silicone rubber having sufficiently improved properties to serve as high-voltage electrical insulators, even when exposed to air polluted conditions or rigorous weather conditions.

Abstract: Sulfanylsilanes of the formula X1X2X3Si—A—S—SiR1R2R3 are prepared by reacting mercaptosilanes of the formula X1X2X3Si—Alkyl—SH with chlorosilanes Cl—SiR1R2R3. They are used as coupling agents in rubber mixtures.

Abstract: The present application relates to a rubber composition containing a precipitated silica filler having first and second aggregates. The first aggregates are from 10 to 90 weight percent of the overall weight of the silica having first and second aggregates. The second aggregates range from 90 to 10 weight percent of the overall weight of the silica having first and second aggregates. The first aggregates consist essentially of particles ranging in size of from 5 to 15 nanometers in diameter. The second aggregates consist essentially of particles ranging in size of from 17 to 30 nanometers in diameter. The pore size distribution of the silica, as measured by mercury porosimetry is monomodal.

Abstract: The present invention concerns compounds of Formula I R24-zSi[(Q)xA(CH2)yH]z or of Formula II [H(CH2)yA(Q)x]bSiR13-bSiR13-b[(Q)xA(CH2)yH]b, wherein Q is OCH2CH2, OCH2CHCH2, or any combination of one or more units of OCH2CH2 and OCH2CHCH2; A is O, OC6H4, S, NH, NR, O—C(O)—; R is alkyl, aryl, or alkaryl; x is greater than 2 and less than 100;y is greater than 0; except when A═OC6H4, then y is greater than or equal to 0; z is 1 to 4; and each R2 is independently selected from the group consisting of alkyl, aryl and alkaryl; B is O, C6H4, —(CH2)q—, and hydrocarbylene; q is greater than 1 and less than 30; b is 1 to 3; and each R1 is independently selected from the group consisting of alkyl, aryl, and alkaryl, used as nonvolatile in situ precursors to anti-fog agents for packaging films and a novel process of making such films.

Abstract: The invention relates to a rubber composition containing relatively low levels of carbon black and/or silica reinforcement together with a particulate calcium carbonate and selected modifiers. The invention particularly relates to a tire having a component, particularly a tread, of such composition.

Abstract: An oligomer of the formula: [R3SiO1/2]m[O1/2Si(R2)O1/2]n[SiO3/2R]o[SiO4/2]p  (I) wherein each R is selected individually from the group consisting of R1, —OR2 and —OR3; each R1 is independently a substituted or unsubstituted hydrocarbon group; each R2 is a C1-C6 alkyl group or an acyl group; and each R3 is a independently an alkyl or alkenyl group having at least 8 carbon atoms; with the provisos that if R3 is alkenyl, there is no unsaturation within two carbon atoms adjacent to the oxygen atom of the —OR3 group; at least one R group is —OR3; at least one quarter of all R groups are —OR2 or —OR3; m=2 to 20; n=0 to 50; o=0 to 20; and p=0 to 10. The oligomer is a useful component of in insulation formulations for wire and cable used in underground locations.

Abstract: An aqueous sizing composition for glass fibers used to reinforce polyolefin polymers contains coupling agent, chemically modified polyolefin film forming material, and stabilizer.

Abstract: This invention describes the use of blocked mercaptosilanes wherein the hydrogen atom of the mercaptan functionality has been substituted to manufacture coating, adhesive, sealant and elastomeric compositions. The blocked mercaptosilanes described are unique in that they allow the application of elastomers to substrates to proceed while remaining inert toward coupling to the catalyst. The coupling reactions of these blocked mercaptosilicon compounds are triggered by exposure to an appropriate deblocking agent.

Abstract: Linerless postage stamps are produced by coating a paper substrate on the bottom surface with pressure sensitive adhesive, and coating the substrate on the top surface with release material, such as silicone, which includes an effective amount of stamp cancellation ink retaining particles, so that when the release coat and particles are contacted by stamp cancellation ink the particles will retain sufficient stamp cancellation ink so that the ink is visible on the top face and will not be wiped off during normal handling. The particles may comprise fumed silica, colloidal silica, kaolin clay, aluminum oxide, wollastonite, talc, calcium carbonate, titanium dioxide, or combinations thereof. Stamp indicia is typically provided on the top of the substrate underneath the release coat.

Abstract: An effective production method for silane-treated clays having exceptional reinforcing effects with respect to rubber, and compositions using these silane-treated clays are offered. With the silane-treated clay production method, a functional silane is predispersed or emulsified in water by means of a surfactant in order to mix the functional silane with kaolin clay and thereby uniformly surface-treat the kaolin clay with the functional silane. The surfactant should preferably be a non-ionic surfactant with an HLB value in the range of 8-18. The silane-treated clay formed by surface-treating kaolin clay by means of these functional silanes characteristically contains low residual levels of the non-ionic surfactants. The functional silanes can be either vinyl or sulfur functional silanes. The silane treated clays are useful as fillers or extenders in rubber compositions, particularly those employing silicas and/or carbon blacks.

Abstract: A polysiloxane composition comprising (A) a polysiloxane having a group represented by the formula (I): ≡Si—OR  (I) wherein, R is a C1 to C18 substituted or unsubstituted monovalent hydrocarbon group or ether bond containing an organic group; and (B) at least 1 ppm of (a) a compound having an N, P, S, Sn, or As component or (b) an acetylene alcohol and a rubber composition containing the same. Specific polysiloxanes (A) contain both formula (I): ≡Si—OR as well as Si—H.

Abstract: A resin composition comprising (A) an aromatic polycarbonate resin or aromatic epoxy resin and (B) a minor amount of an organosiloxane containing phenyl and alkoxy radicals is flame retardant and does not emit harmful gases when burned. It can be molded into parts having optical transparency.

Abstract: The present invention relates to asymmetrical siloxy compounds of the formula wherein R1, R2 and R3 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms; R4 is selected from the group consisting of alkylene groups having from 1 to 15 carbon atoms and arylene and alkyl substituted arylene groups having from 6 to 10 carbon atoms; and n is an integer of from 1 to 8.

Abstract: Incorporation of neutral water soluble inorganic salts into a precipitated silica improves the filler dispersion in a compounded rubber, reduces rolling resistance (hysteresis), and improves processability. These properties are achieved without loss of the expected reinforcement effect due to the substitution of inorganic salt for SiO2 in the silica. The properties are seen when a variety of silanes and processing aids are added to the silica.

Abstract: The rubber composition of the present invention comprises a rubber component which is a blend rubber of a copolymer rubber and other diene based rubbers or the copolymer rubber alone, the copolymer rubber having a glass transition temperature of −60° C.

Abstract: The present invention relates to a composition and a method of processing a composition containing from 0.1 to 10 phr of a tin organoacid salt selected from the group consisting of compounds of the formula  where R3 and R4 are independently selected from the group consisting of alkyls having from 1 to 20 carbon atoms, alkenyls having from 1 to 20 carbon atoms and aryls and alkaryls having from 6 to 20 carbon atoms.

Abstract: The present invention is directed to a unique poly(arylene ether)/polyetherimide composition having improved impact strength, as well as other improved mechanical and physical properties. This composition comprises: about 40 to about 90 pbw of a polyetherimide resin; about 8 to about 60 pbw of a functionalized poly(arylene ether) resin having a base titratable functionality level of at least 30 .mu.eq/g; and about 0.2 to about 35 pbw of a copolymer of an olefin and an epoxy-functionalized monomer; and may further include catalysts, gloss improvers, stabilizers, and other additives.

Abstract: A rubber composition as a blend comprised of an elastomer(s), and particulate reinforcement provided as an intimate blend of carbon black particles and fumed silica particles, together with a coupling agent.A tire having a component of such rubber composition such as, for example, a tread, is specifically contemplated.

Abstract: The specification discloses polymeric articles such as fibers and fibrous webs which exhibit improved hydrophobicity and methods for making the articles. The articles comprise a polymer selected from the group consisting of polyolefins and polyesters and an additive of the structure R.sup.1 --A--Si(R.sup.2 R.sup.3)--O--(Si(R.sup.4 R.sup.5)--O)n--Si--(R.sup.6 R.sup.7)--A--R.sup.8, wherein R.sup.1 and R.sup.8 are selected from the group consisting of alkyl, aryl, alkylaryl groups and acyl and arylacyl derivatives of an aliphatic or aliphatic/aromatic mono-acid with a molecular weight of from about 250 to about 600 daltons, A is selected from the group consisting of --O--, --NH--C(O)--NH--(CH.sub.2).sub.3 --, and --C(O)--NH--(CH.sub.2).sub.3 --, R.sup.2, R.sup.3, R.sup.6 and R.sup.7 are selected from the group consisting of CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7, and C.sub.4 H.sub.9, R.sup.4 and R.sup.5 are selected from the group consisting of CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7, and (CH.sub.2).sub.

Abstract: A tread rubber composition of excellent hydrophobic property and water repellency suitable to a studless tire of excellent performance on ice, comprising a diene rubber comprising at least one rubber selected from the group consisting of natural rubber, isoprene and polybutadiene as a main ingredient and, based on 100 parts by weight of the diene rubber, from 10 to 40 parts by weight of a clay comprising kaolinite as a main ingredient and having an oil absorption amount of from 50 to 70 g/100 g and 0.1 to 8 parts by weight of a silane coupling agent.

Abstract: The present invention provides a rubber composition and a pneumatic tire using the rubber composition. The rubber composition which comprises: a rubber component comprising a styrene-butadiene copolymer rubber or a blend of the styrene-butadiene copolymer rubber and another conjugated diene base rubber with the styrene-butadiene copolymer rubber being 70% by weight or more of the entire blend, and the entire content of styrene is 30 to 40% by weight of the entire rubber component; silica in an amount of 10 to 60 parts by weight per 100 parts by weight of the rubber component; a specific silane coupling agent, i.e., a bis(alkoxysilylalkyl)polysulfide having a polysulfide chain in which the distribution of sulfur is specified, in an amount of 1 to 20% by weight of the amount of silica; and carbon black, the sum of the amount of silica and carbon black being 60 to 130 parts by weight per 100 parts by weight of the rubber component.

Abstract: The rubber for high-performance tire tread of the invention basically includes: (a) about 10%.about.50% weight percentage low molecular weight coupled copolymer of aromatic vinyl compound and conjugated diene or conjugated diene monopolymer, having a molecular weight of 5.times.10.sup.4 .about.35.times.10.sup.4, (b) about 10%.about.60% weight percentage middle molecular weight uncoupled copolymer of aromatic vinyl compound and conjugated diene, having a molecular weight of 10.times.10.sup.4 .about.80.times.10.sup.4, and (c) 5.about.60% weight percentage high molecular weight coupled copolymer of aromatic vinyl compound and conjugated diene, having a molecular weight of 45.times.10.sup.4 .about.200.times.10.sup.4.

Abstract: A water-borne fluoroelastomer composition comprising an aqueous dispersion of a fluoroelastomer polymer, from about 2 to about 30 parts by weight per one hundred parts by weight of polymer of a curative system, said curative system having been formed by blending from about 6 to about 94 parts by weight of a stabilized siloxane and from about 94 to about 6 parts by weight of a non-stabilized silane, where said stabilized siloxane and said non-stabilized silane total about one hundred parts by weight of the curative system, from 0 to about 40 parts by weight of an additive filler per one hundred parts by weight of polymer, and sufficient water to provide a composition having a solids content of from about 10 to about 80 percent by weight of the total composition.

Abstract: To obtain an injection-molded article of a resin composition blended with a thermoplastic resin and a liquid-crystal polymer, which is excellent in mechanical strengths, etc., by forming the liquid-crystal polymer into fibers during molding. The molded article, wherein the liquid-crystal polymer (B) capable of forming an anisotropic molten phase is present in the form of fiber having an average aspect ratio of 6 or higher in a matrix of the thermoplastic resin (A) not forming an anisotropic molten phase, is produced by injection-molding a thermoplastic resin composition obtained by blending 100 parts by weight of a resin component consisting of 99 to 50 parts by weight of the thermoplastic resin (A) not forming an anisotropic molten phase and 1 to 50 parts by weight of the liquid-crystal polymer (B) capable of forming an anisotropic molten phase with 0.01 to 1.0 part by weight of at least one compound (C) selected from the group consisting of phosphoric acid, phosphorous acid and metal salts thereof.

Abstract: This invention describes the use of novel blocked mercaptosilanes, wherein the hydrogen atom of the mercaptan functionality has been substituted, in filled polymers. The blocked mercaptosilanes described are unique in that they allow the mixing of fillers with organic polymers to proceed while remaining inert toward coupling to the polymer. The coupling reactions of these blocked mercaptosilicon compounds are triggered by addition of an appropriate deblocking agent, which preferably is tetramethylthiuram monosulfide.

Abstract: A high performance, hot melt, single-component sealant which combines the prefered properties of single- and two-component sealants. The sealant comprises a styrene block copolymer, a moisture-curable silylated polyurethane prepolymer, an aromatic tackifier resin, a polar tackifier resin, a polyethylene wax and an organo silane adhesion promoter. Optionally, the sealant may include UV absorbers, antioxidants, plasticizers, catalysts, fillers, pigments, and the like. The sealant does not require mixing before it is applied at a high temperature to the surface that is to be sealed. After application, the sealant forms, upon cooling, a solid elastomer. Upon further exposure to atmospheric moisture, the sealant forms a thermoset crosslinked network having the preferred properties of two-component chemically-cured sealants. The sealant is suitable for use as an edge sealant for insulated glass.

Abstract: A polymer alloy comprising ETFE having a melting point of at most 250.degree. C. and a melt flow rate of at least 20 at 297.degree. C., PPS and a compatibilizer (such as 3-aminopropyltriethoxysilane).

Abstract: The preparation of an aqueous dispersion can be based on at least one water-insoluble organopolymer, on at least one water-dispersible silicon compound and on at least one water-soluble or dispersible phosphorus compound.

Abstract: A silica-blended rubber composition comprising 100 parts by weight of sulfur-vulcanizable rubber blended with 10 to 100 parts by weight of silica, 3 to 20% by weight of a silane coupling agent based on the silica and 1 to 20% by weight of sodium borate based on the silica. An alkoxy group-containing silane coupling agent is preferred as the silane coupling agent, and sodium tetraborate is preferred as the sodium borate.

Abstract: The present invention relates to asymmetrical siloxy compounds of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms; R.sup.4 is selected from the group consisting of alkylene groups having from 1 to 15 carbon atoms and arylene and alkyl substituted arylene groups having from 6 to 10 carbon atoms; and n is an integer of from 1 to 8.

Abstract: Aqueous dispersions of organopolysiloxanes comprising (A) an organopolysiloxane containing groups which are capable of condensation, (B) a condensation catalyst, (C) an organopolysiloxane resin which is at least partly soluble in organopolysiloxane (A) when present in amounts of up to 50% by weight based on the weight of (A), (D) a compound containing basic nitrogen and (E) polyvinyl alcohol. The aqueous dispersions are prepared by dissolving the organopolysiloxane resin (C) in the organopolysiloxane (A) and then emulsifying the solution with polyvinyl alcohol (E) and water. The stable aqueous dispersions of the present invention cure to form transparent films.

Abstract: Oligomeric organosilicon compounds are disclosed of the formula I ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 independently of one another denote H, (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4) alkoxy, (C.sub.1 -C.sub.4) haloalkoxy, (C.sub.1 -C.sub.4)haloalkyl, phenyl, aryl or aralkyl andZ denotes an alkylidene radical having 0-6 carbon atoms, x can be a statistical average of 1-6 andn=1-150 and . . . means that z can be bonded either to the one or the other C atom, and the particular free valency is occupied by a hydrogen.and their use in rubber mixtures and for the production of shaped articles, in particular pneumatic tires.

Abstract: A composition for the promotion of adhesion between a rubber formulation and a textile substrate is provided. The inventive composition comprises either a mixture of specific amine functional silanes and organo-functional silanes having reactive groups or groups with an affinity for rubber. The inventive method entails the use of the inventive composition or a silane compound having both an amine moiety and a reactive group having an affinity for rubber formulations, particularly an unsaturated carbon-carbon bond. The composition may be utilized to adhere any standard reinforcement-type textile, such as polyester or polyamide, to a standard rubber composition, such as SBR, NBR, or EPDM. A method for adhering textiles to rubber formulations is also provided involving a pre-dip, -spray, -coat, and the like, of the inventive composition on a reinforcement-type textile surface followed by the contacting of the rubber formulation.

Abstract: The present invention relates to bis(hydroxyalkyl alkyl ester) polysulfides of the formula ##STR1## where R.sup.1 is independently selected from alkylene groups having 1 to 8 carbon atoms, R.sup.2 is independently selected from alkylene groups having 2 to 6 carbon atoms and x is an integer of from 2 to 8. These polysulfides are particularly suited for use in rubber compositions.

Abstract: A primer composition comprising (A) an acrylic resin, (B) a benzotriazole compound having not more than 1% by weight of heat loss when held at 150.degree. C. for 1 hour, and (C) an organic solvent. Also disclosed are an article obtained by forming a primer coat of the primer composition on the surface of a substrate, and an article obtained by forming the primer coat on the surface of a transparent plastic substrate and coating on the primer coat a protective coat comprising a condensation type curable silicone resin. The primer coat, which contains the above benzotriazole compound as an ultraviolet light absorber, has a superior weatherability while maintaining a good adhesion to the substrate.

Abstract: A pressure-sensitive adhesive composition comprises, as pressure-sensitive adhesive components thereof, an acrylic-based polymer and a silane compound having at least two alkoxysilyl groups in its molecular. The silane compound is a compound which is represented by the following general formula (I).[General Formula (I)] ##STR1## (In this general formula, "A" is a group having a chain structure and/or a ring structure containing 1 to 12 carbon atom(s), R.sub.1 and R.sub.4 are respectively an alkyl group containing 1 to 5 carbon atom(s), and R.sub.2, R.sub.3, R.sub.5 and R.sub.6 are respectively an alkyl group or alkoxyl group containing 1 to 5 carbon atom(s).)The amount of the silane compound to be contained is preferably 0.001 to 10 parts by weight with respect to the pressure-sensitive adhesive composition of 100 parts by weight.

Abstract: Silicone rubber compositions are disclosed including a silicone polymer and a silicon-treated carbon black. The silicon-treated carbon blacks include a silicon-containing compound that is distributed through at least a portion of the carbon black aggregate. The silicon-treated carbon black is incorporated within a silicone rubber composition as an alternative reinforcing and extending filler, imparting higher hardness to elastomers formed from the composition, when compared to silicone rubber compositions incorporating an untreated carbon black.

Abstract: Polysiloxane sheet or tube polymers having pendant siloxane groups are prepared by contacting sheet or tube silicates with halogen endblocked halosiloxanes represented by the formula: ##STR1## where X is chlorine, fluorine, bromine, or iodine; R1 to R7 are alkyl groups with 1-6 carbon atoms, aryl groups, alkaryl groups, or aralkyl groups; in which one of the groups R1, R4, and R5 can additionally represent X; and n has a value of 2 to about 20.

Abstract: The present invention relates to colloidal metal oxides having blocked isocyanate groups, which are based on the reaction product ofA) blocked isocyanate group-containing silanes corresponding to formula (I) ##STR1## wherein R represents hydrogen or an organic group having 1 to 40 carbon atoms,X, Y and Z represent identical or different organic groups having 1 to 30 carbon atoms which are inert to isocyanate groups below 100.degree. C., provided that at least one of these groups is a C.sub.1 -C.sub.4 -alkoxy group,Q represents an organic group which contains at least one isocyanate group reacted with a blocking agent andn is 2, 3 or 4 withB) colloidal metal oxides selected from Al, Si, Ti, Ta, W, Hf, Zr, Sn and Y.The present invention also relates to the use of modified metal oxides, either alone or in combination with compounds containing at least two isocyanate-reactive groups, for the preparation of optionally expanded polyurethane plastics, lacquers or coating agents.

Abstract: In a method for kneading a silane coupling agent-blended rubber composition prepared by blending a natural rubber and/or a diene group synthetic rubber with silica and a silane coupling agent, a coupling reaction of the silica with the silane coupling agent is carried out in a temperature range of 130 to 140.degree. C.

Abstract: The present invention relates to rubber compositions containing an elastomer having olefinic unsaturation and a carboxymaleimidophenyl ester of the formula ##STR1## wherein R.sup.1 is selected from the group alkyls having from 1 to 8 carbon atoms and aryls having from 6 to 10 carbon atoms; and R.sup.2 and R.sup.3 may be the same or different and are selected from the group consisting of hydrogen, halogen and alkyls having from 1 to 8 carbon atoms.

Abstract: A compatibilized silica for incorporation into natural and synthetic polymers in latex form or dry blending operations is described. Said compatibilized silica is formed by the reaction of precipitated or fumed silica with organosilicon coupling compounds in aqueous suspension. Polymer-silica reinforced masterbatches are prepared by addition of the compatibilized silica slurry to natural and synthetic polymer latices. Also described is a process for preparing the compatibilized silica.

Abstract: The present invention relates to a rubber composition containing silica reinforcement and pneumatic tires having treads comprised of such rubber composition. The rubber composition comprises an elastomer, silica, optionally carbon black, and a silica coupler comprised of an N,N'-diorgano-N,N'-dithiobis (organosulfonamide).

Abstract: The rubber mixtures according to the invention, containing at least one rubber, a filler, optionally additional rubber auxiliaries and at least one polysulphide polyether silane corresponding to the formulaR.sup.1 R.sup.2 R.sup.3 Si--X.sup.1 --(--S.sub.x --polyether --).sub.m --(--S.sub.x --X.sup.2 --SiR.sup.1 R.sup.2 R.sup.3).sub.n (I),are used for the preparation of rubber vulcanisates, from which in particular tires having a low rolling resistance associated with a good wet skid resistance and a high abrasion resistance can be produced.

Abstract: This invention relates to organosilicon compositions useful as adhesion promoters for curable organopolysiloxanes, said organosilicon compositions being formed by reacting (A) a polyhydric alcohol, (B) an organosiloxane containing at least one organofunctional group and one hydroxyl or hydrolyzable group per molecule and (C) a silane containing at least three hydrolyzable groups per molecule.

Abstract: Silica with the following physico-chemical properties:______________________________________ Specific surface m.sup.2 /g 80-400 Primary particle size nm 7-40 Tapped density g/l 50-300 pH value 3-10 Carbon content % 0.1-15 DBP number % <200 ______________________________________is produced by spraying a silica under intensive mixing, optionally with water or dilute acid at first and then with a surface-modifying reagent or a mixture of several surface-modifying reagents, then mixing, tempering, and subsequently destructuring/compressing and grinding.