Abstract: A vinyl chloride homopolymer or copolymer composition contains a silane, a compound capable of generating free radicals and a stabilizer comprising a lead compound or an organotin compound which is effective to prevent discoloration and degradation of the homopolymer or copolymer and does not inhibit the grafting of the vinyl silane on the homopolymer or copolymer. The graft homopolymer or copolymer is exposed to moisture to cross-link it, suitably after molding or otherwise fabricating the graft polymer to form an article. There is also provided a method of moisture cross-linking poly(vinyl chloride) and vinyl chloride copolymers.

Abstract: A dental material comprising a porous ceramics formed into an artificial tooth, an inlay, an onlay, a crown, a crown bridge or into a block shape suitable for CAD/CAM, sintered, having communicating holes, and impregnated with a resin. A porous ceramics formed from a network-forming oxide is applicable, and an intermediate oxide and a network-modifying oxide may also be adopted. The porous ceramics should preferably have a porosity within a range of from 0.5 to 70%. The resin should preferably a polymer of a monomer and/or oligomer containing at least an ethylenic double bond. Prior to impregnation of the porous ceramics with the resin, the porous ceramics should preferably be subjected to a coupling treatment.

Abstract: Disclosed is an aqueous, silicone-modified acrylate polymer emulsion, which is an acrylate polymer emulsion produced by subjecting a monomer system (A) comprising an acrylate monomer selected from the group consisting of an acrylic ester, a methacrylic ester and a mixture thereof to emulsion polymerization in an aqueous medium in the presence of emulsifier (B) selected from the group consisting of a sulfonic acid group-containing ethylenically unsaturated monomer, a sulfonate group-containing ethylenically unsaturated monomer, and a mixture thereof, wherein the acrylate polymer emulsion is silicone-modified using a specific, silicone structure-containing modifier (C) during or after the emulsion polymerization.

Abstract: A method of dispersing silicone compositions in organic thermoplastic materials is disclosed. The novel compositions produced by the method of the invention have a fine and relatively uniform dispersion or organosilicone in an organic thermoplastic. An organosilicone resin (A) and a predominantly linear silicone fluid (B) are first blended to substantial homogeneity to form an organosilicone alloy therefrom. The organosilicone alloy exhibits thermoplastic behavior and has a temperature-dependent complex viscosity .eta.*.sub.Si (T) associated therewith. Likewise the organic thermoplastic materials have a temperature-dependent complex viscosity, .eta.*.sub.OTP (T), associated therewith. The organic thermoplastic and the organosilicone alloy are thereafter mixed at a predetermined mixing temperature, T.sub.m, and a predetermined shear strain rate. The organic thermoplastic material and the organosilicone alloy are both in a flowable state at T.sub.m. The value of T.sub.m is selected to be about .+-.30.degree. C.

Abstract: A restorative composition for hard tissue, comprising a paste (A) containing an inorganic calcium phosphate powder, a polymerizable monomer mixture and a polymerization initiator, and a paste (B) containing an inorganic calcium phosphate powder, a polymerizable monomer mixture and a polymerization accelerator, wherein the content of the inorganic calcium phosphate powder in each paste is 75-85% by weight, and each monomer mixture contains a monomer of the formula (1): ##STR1## and a monomer of the formula (2): ##STR2## the content of the monomer (1) accounting for 40-65% by weight of the monomer mixture as a whole. The composition can well adhere to the bone and has a sufficient water resistance. As it generates little heat upon hardening, it is less detrimental to the patient's tissues. Furthermore, the paste has an appropriate consistency, which facilitates homogeneous mixing of the paste and application of the resultant mixture to the affected part by the use of a dispensing apparatus.

Abstract: Permanent aqueous marker inks are provided which include surfactant, a pigment, a film-forming polymer, and water. The surfactant may be a combination of a hydrocarbon, preferably an alkylphenol ethyoxylate and a fluorocarbon, or it may be a silicone.

Abstract: High clarity optical and safety glass laminate interlayer films and optical laminates are described. The films and their laminates comprise very low density polyethylene and/or its copolymers, preferably polymerized with metallocene catalysts, and modified with additives, such as coupling agents, clarifying or nucleation agents, UV-light absorbers, pigment or color concentrate, and IR-light blockers.

Abstract: There is provided a melt extrudable, moisture curable thermoplastic polymer which is produced from a silane modified elastomeric polymer and which has improved hysteresis, reduced stress decay and improved creep properties. The polymer may be processed into a nonwoven web, film or foam which may be laminated to other materials such as spunbond polyolefin layers and may be used in medical, personal care, feminine hygiene and other applications.

Abstract: The present invention relates to a rubber composition containing silica reinforcement and to pneumatic tires having treads comprised of such rubber composition.A rubber composition comprises at least one elastomer, silica, carbon black and a silica coupler comprised of 3,3'-tetrathiodipropanol polysulfide mixture.

Abstract: A coating solution is made from an ingredient solute comprised of silicone oil and polymethacrylicacidalkyl, a basic solvent selected from a group consisting of turpentine oil, heptane, n-decane, tetrachloroethane, 2-butanone, 1.4 dioxane, ethoxyethanol and toluene, and a buffer solvent selected from a group consisting of methanol, aceticacidalkyl and tetrachloromethane. The buffer solvent is added to a mixture of the ingredient solute and the basic solvent so that both of the silicone oil and the polymethacrylicacidalkyl can be perfectly dissolved to form a uniform and clear solution.

Abstract: An aqueous coating composition includes: an inorganic particulate substance whose surface is modified with a silane coupling agent having at least one functional group selected from a group consisting of vinyl group, (meth)acryloyl group, epoxy group, and amino group; and an aqueous resin having a functional group which is reactive with the functional group of the silane coupling agent. The aqueous coating composition has excellent storage stability, pigment dispersion, coloring property, adhesion to various substrates, and printing properties, and can be used for various applications, such as printing ink, coating materials, adhesives, fiber treatment agents, surface treatment agents, and the like.

Abstract: There is provided a melt extrudable, moisture curable thermoplastic polymer which is produced from a silane modified elastomeric polymer and which has improved hysteresis, reduced stress decay and improved creep properties. The polymer may be processed into a nonwoven web, film or foam which may be laminated to other materials such as spunbond polyolefin layers and may be used in medical, personal care, feminine hygiene and other applications.

Abstract: There is provided a melt extrudable, moisture curable thermoplastic polymer which is produced from a silane modified elastomeric polymer and which has improved hysteresis, reduced stress decay and improved creep properties. The polymer may be processed into a nonwoven web, film, fiber or foam which may be laminated to other materials such as spunbond polyolefin layers and may be used in medical, personal care, feminine hygiene and other applications.

Abstract: There is disclosed a polyolefin composition which can be extruded at relatively high rates to provide extrudate having improved hydrophobicity, said composition comprising(A) 100 parts by weight of a polythylene resin; and(B) 1 to 5 parts by weight of an interactive diorganopolysiloxane process aid, said diorganopolysiloxane having a number average molecular weight of at least 10,000. In particularly preferred embodiments, an interactive diorganopolysiloxane in combination with a low density polyethylene is used as a process aid for linear low density polyethylene.

Abstract: A surface-segregatable, melt-extrudable thermoplastic composition is provided which includes at least one thermoplastic polyolefin and at least one additive having the general formula, ##STR1## in which: (A) R.sub.1 -R.sub.9 are independently selected monovalent C.sub.1 -C.sub.3 alkyl groups;(B) R.sub.10 is hydrogen or a monovalent C.sub.1 -C.sub.3 alkyl group;(C) m represents an integer of from 1 to about 4;(D) n represents an integer of from 0 to about 3;(E) the sum of m and n is in the range of from 1 to about 4;(F) p represents an integer of from 0 to about 5;(G) x represents an integer of from 1 to about 10;(H) y represents an integer of from 0 to about 5;(I) the ratio of x to y is equal to or greater than 2;(J) the additive has a molecular weight of from about 350 to about 1,400; and(K) the additive is present in an amount of from about 0.5 to about 5 percent by weight, based on the amount of thermoplastic polyolefin.

Abstract: Proposed is an acrylic rubber composition suitable for hot-air vulcanization under normal pressure with a greatly increased vulcanization velocity. The composition comprises:(1) 100 parts by weight of an acrylic rubber polymer which is a copolymerization product of a monomer mixture consisting of(a) from 1 to 25% by weight of an alkoxy-substituted alkyl (meth)acrylate,(b) from 55 to 99% by weight of an alkyl (meth)acrylate, and(c) from 0 to 20% by weight of a third comonomer selected from several ethylenically unsaturated monomeric compounds;(2) from 0.1 to 20 parts by weight of an alkoxy silane compound having an unsaturated group;(3) from 10 to 200 parts by weight of a reinforcing filler; and(4) from 0.1 to 10 parts by weight of an organic peroxide.

Abstract: A method for the preparation of a non-yellowing one-package room-temperature-curable silicone elastomer composition that prior to its cure is highly workable and that during its cure does not crack or fissure even when deformed by an outside force. The method comprises as step one mixing of silanol-containing polydiorganosiloxane and inorganic filler; as step two admixing vinyltrioximosilane into the mixture of step one; and as step three admixing an alkyltrioximosilane into the mixture of step two.

Abstract: This invention relates to polymers having enhanced hydrophilicity and thermal regulative properties. Exemplary polymers include aliphatic polyamide polymers and polyester polymers. The polymer has bonded thereto a hydrophilic polysiloxane having an affinity for the polymer and having a molecular weight greater than about 1000 g/mol preferably greater than about 2000 g/mol, and preferably greater than about 4000 g/mol. The polymer has substantially no polymerization with the hydrophilic polysiloxane. Alternatively, an aliphatic polyamide polymer is provided having enhanced hydrophilicity and thermal regulative properties. The polymer has bonded thereto an anionic hydrophilic polysiloxane having an affinity for the aliphatic polyamide polymer. The aliphatic polyamide polymer has substantially no polymerization with the anionic hydrophilic siloxane.

Abstract: The present invention relates to a rubber composition containing silica reinforcement and to pneumatic tires having treads comprised of such rubber composition.A rubber composition comprises at least one elastomer, silica, carbon black and a silica coupler comprised of poly-(2-propanol-1,3-polysulfide).

Abstract: The present invention relates to a rubber composition containing silica reinforcement and to pneumatic tires having treads comprised of such rubber composition.A rubber composition comprises at least one elastomer, silica, carbon black and a silica coupler comprised of 3,3'-tetrathiodipropionitrile polysulfide mixture.

Abstract: Pressure sensitive silicone adhesive compositions having excellent peel adhesive strength, high tack and excellent quick stick capability are provided. Generally the adhesive composition is made of a MQ resin and a silicone gum, to which a silicone fluid is added. A cure catalyst can then be added to the mixture prior to coating.

Abstract: The invention relates to a mixture of(A) ABS graft polymer and(B) 0.05 to 2% by weight (based on the mixture) of a polyether- or polyester-grafted siliconewith improved surface gloss.

Abstract: The conductive roll accordin g to the present invention can be used for develop ing, charging, destaticizing and transferring images of electrophotography as the roll can be tightly contacted against a photosensitive member for uniform charging of the potential. The conductive roll is constructed to minimize contamination of the photosensitive member. The conductive roll includes a highly conductive shaft provided at the core, an intermediate layer provided on the outer peri phery of the shaft and is made of a conductive and elastic material or a foamed member of such material, and a coated film layer provided on the outer periphery of the intermediate layer having a high resistance.

Abstract: Proposed is an acrylic rubber-based composition suitable for hot-air vulcanization under normal pressure in a continuous process. The rubber composition comprises, besides an acrylic rubber polymer having, in a molecule, at least two silicon-bonded vinyl groups to serve as the crosslinking sites, reinforcing filler and organic peroxide as a vulcanizing agent, an alkoxy silane compound having a vinyl group or (meth)acryloxy group bonded to the silicon atom, such as vinyl triethoxy silane and 3-methacryloxypropyl trimethoxy silane in a specified amount. This unique ingredient serves as a vulcanization accelerator so that the vulcanization reaction is so rapid as to be freed from foaming of the vulcanizate due to the volatile matters and is complete even in the surface layer without the vulcanization-inhibiting influences by the atmospheric oxygen.

Abstract: Microporous material comprising water insoluble thermoplastic organic polymer and particulate amorphous precipitated silica not only exhibits low particulate emissions during handling and use, but also has a low extactable alkali metal content. Microporous material having these characteristics is especially useful in clean rooms where electronic devices such as integrated circuits are manufactured. Such microporous material may be produced by employing amorphous precipitated silica particles having low alkali metal content as all or a substantial proportion of the amorphous precipitated silica particles constituting the microporous material.

Abstract: The present invention relates to storage-stable polysiloxane compositions which give permanently water-wettable elastomers. The polysiloxane compositions of the present invention which vulcanize to yield elastomers are useful as dental impression compositions.

Abstract: Silicone adhesive compositions having excellent quick stick, peel and tack adhesion properties are provided. Generally the adhesive composition is the reaction mixture of a silanol-containing siloxane resin, a silicone polymer gum, and a silicone fluid containing functionality capable of reacting with silanol and silanol-like groups; optionally, a solvent; and a cure catalyst are added.

Abstract: Magnetic or magnetizable composites contain ferrite or rare earth particles in a lightweight flexible binder blend of a semicrystalline polyolefin dispersed within a rubbery matrix. Small but effective amounts of lubricating agents are utilized to improve the processability of the composite which generally lacks any halogen and is environmentally friendly.

Abstract: Polyester/elastomer composites are produced by vulcanizing a polyester which contains aliphatic double bonds in the presence of a vulcanizate comprising:I. 100 parts by weight of a rubber,II. 0 to 300 parts by weight of fillers,III. 1 to 10 parts by weight of peroxidic vulcanization agent,IV. 0.5 to 4 parts by weight of vulcanization activators,V. 0 to 150 parts by weight of plasticizer andVI. 0.5 to 10 parts by weight of a silane of the formulaX--R'--Si(OR.sup.2).sub.3wherein X contains an aliphatic double bond or an epoxide group.

Abstract: The present invention relates to a silicone composition comprising (A) a silicone release coating composition and (B) an organosilicon compound having the general formula ##STR1## where R.sup.1 is a monovalent hydrocarbon group, R.sup.2 is an alkylene group, R.sup.3 is a hydrogen atom, an alkenyl group, or a hydroxyl group, m has a value of zero or greater, and n has a value of greater than zero which cures to form a release coating. The silicone release coating compositions of this invention give a cured release coating which exhibits optimal release values against lucky substances and which does not impair the residual adhesion of tacky substances.

Abstract: An antifouling coating composition includes a binder copolymer which contains one or more copolymerizable ethylenically unsaturated monomers or oligomers wherein at least one of said monomers or oligomers has a hydroxy group, a copolymerizable silicone monomer or oligomer, and a film formable metal soap compound which is prepared by reacting a metal compound containing a metal having a valency of at least 2 with an unsaturated fatty acid or alcohol.

Abstract: This invention is a blended powder mixture including a thermosetting resin and a solid, non-hydrolyzed, functional low molecular weight organosilane coupling agent. The powder mixture may be used to form a composite coating to protect a steel substrate from corrosion. The composite coating is formed by coating the substrate with an inorganic layer such as a silicate, depositing the powder mixture over the inorganic layer, heating the substrate to a temperature at least equal to the curing temperature of the resin and maintaining the substrate at the curing temperature for sufficient time to crosslink the resin and to diffuse the organosilane to the substrate whereby the crosslinked layer is coupled to the inorganic layer by the organosilane. The powder mixture includes 0.01-10 wt. % organosilane having a melting point no greater than the curing temperature of the resin. Preferred thermosetting resins include epoxy, polyester, epoxy-polyester, acrylic, acrylic-urethane or fluorovinyl.

Abstract: Cross-linkable polymer compositions of an olefinic polymer modified by an unsaturated silane bearing hydrolyzable groups and a zeolite, wherein the zeolite is an adduct of a zeolite in finely divided form having a water content not higher than 3% by weight modified at a temperature of at least 150.degree. C. with at least one carboxylic and/or sulfonic organic acid.

Abstract: An anionic electrodepositable coating composition for making pigment dispersed color filters comprising: (a) a pigment; (b) a first addition copolymer containing pyrrolidone and hydroxy groups; (c) a second addition copolymer containing carboxyl and hydroxy groups; and (d) a low molecular weight amine. The pyrrolidone-containing monomer can be N-vinyl-2-pyrrolidone or a pyrrolidone-containing acrylate-based monomer represented by the following formula: ##STR1## wherein R is hydrogen atom, or methyl or ethyl group, and n is an integer between 1.about.3. The first addition copolymer has a weight average molecular weight between 1,000 and 20,000 and is prepared from a monomer composition comprising about 0.5.about.90 mole percent of a pyrrolidone-containing unsaturated monomer and about 1.about.50 mole percent of a hydroxy-containing unsaturated monomer. The second addition copolymer has a weight average molecular weight between 5,000 and 60,000 and is prepared from a monomer composition comprising about 5.

Abstract: Highly filled, curable compositions containing a curable liquid, e.g. methyl methacrylate; 20 to 80% by weight of a finely divided inorganic filler of defined particle size, e.g. silica; a non-functionalized polymer containing a low Tg component which is soluble in the curable liquid, e.g. a non-functionalized vinyl aromatic/conjugated diene block copolymer; and other components which diperse the filler in the curable liquid and couple the filler to the matrix can be used to produce cured composites which show improved resistance to stress induced by thermal cycling.

Abstract: Highly filled, curable compositions containing a curable liquid, e.g. methyl methacrylate; 20 to 80% by weight of a finely divided inorganic filler of defined particle size, e.g. silica; a functionalized polymer containing a low Tg component which is soluble in the curable liquid, e.g. a functionalized vinyl aromatic/conjugated diene block copolymer; and other components which diperse the filler in the curable liquid and couple the filler to the matrix can be used to produce cured composites which show improved resistance to stress induced by thermal cycling.

Abstract: Adhesion-promoting additives for use in curable organosiloxane compositions comprise 1) at least one organosiloxane comprising a) silicon bonded hydrogen atoms and/or ethylenically unsaturated substituents bonded to silicon through carbon and b) at least one silicon atom containing three hydrolyzable groups, and 2) at least one silane containing four alkoxy or enoloxy groups or three of these groups and a hydrocarbon radical containing an epoxy or ethylenically unsaturated group as a substituent.

Abstract: The present invention provides a polyarylene sulfide resin composition having excellent general properties and particularly excellent conductivity and antistatic properties which comprises:(A) 100 parts by weight of a polyarylene sulfide resin,(B) 3 to 50 parts by weight of expandable graphite having an average particle diameter of 5 to 800 .mu.m,(C) 0.01 to 5 parts by weight of an alkoxysilane compound, and(D) 0 to 300 parts by weight of a filler other than the component (B) which is selected from among fibrous, powdery and platy fillers.

Abstract: A method of improving balance of properties, such as increased reinforcement and reduced rolling resistance of a rubber compound, comprising mixing the rubber compound with a carbon black and a silane coupling agent for a period of between about 10 seconds and 20 minutes at a temperature of between about 160.degree. C. and 180.degree. C. such as a styrene butadiene rubber compound, is disclosed. The method involves mixing the rubber compound "in situ" with a carbon black and Bis(3-triethoxysilylpropyl)-tetrasulfane at ambient temperature.

Abstract: The invention relates to oxide particles which have a surface modification by covalently bonded organic groups which allow covalent bonding into polymer materials. These particles are particularly advantageous in their use as fillers or modifying agents in polymer materials, in particular polymer films.

Abstract: Flame retardant and abrasion resistant crosslinkable compositions useful as insulation for wire and cable are provided. The compositions contain an ethylene-vinyl acetate copolymer having a vinyl ester content of 5 to 12 wt. %, a halogenated compound, antimony trioxide and an organic peroxide. Use of specific halogenated compounds, particularly brominated aromatic compounds, with low vinyl acetate content ethylene-vinyl acetate copolymers yield products which are highly resistant to abrasion after crosslinking.

Abstract: A rubber formulation including (a) a hydrogenated nitrile rubber, (b) an organopolysiloxane, (c) a cross-linking controller selected from (i) an ester or polyester of acrylic or methacrylic acid with a polyhydric alcohol, (ii) an amide or polyamide of acrylic or methacrylic acid with a polyamine, (iii) an alkoxysilane having a C.dbd.C double bond, an amino group or a mercapto group and (iv) triallyl isocyanate, (d) an optional filler, and (e) a peroxide crosslinking agent. The rubber formulation is prepared by mixing together (a') a hydrogenated nitrile rubber composition having added therein an optional filler, (b') an organopolysiloxane composition having added therein an optional filler, and (c) the crosslinking controller, and thereafter adding (e) the peroxide crosslinking agent.

Abstract: The introduction of a room-temperature-curable organopolysiloxane composition that cures at room temperature to give a rubber whose surface is easily coated with paint and from which the resulting paint film does not delaminate readily and that after curing is free from staining of the surface of the rubber and any substrates in contact with the rubber.

Abstract: An elastomer-forming silicone composition comprising (A) a vinyl-organopolysiloxane, (B) an organosilicon compound, (C) a noble metal catalyst and (D) an adhesion promoter characterised in that the adhesion promotor is the product of the mixture or reaction of (1) an organosiloxane compound having at least two trialkoxysilyl groups, (2) an unsaturated alcohol having at least one .alpha.,.beta.-unsaturated alkenyl group and has improved adhesion without the toxic disadvantages of the prior art.

Abstract: Diorganopolysiloxane compositions are provided with excellent heat resistance, especially diorganopolysiloxane compositions that are suitable for synthetic fiber lubricants. The diorganopolysiloxane composition is a mixture of (A) a diorganopolysiloxane oil and (B) an amino-group-containing diorganopolysiloxane, and has an average amino equivalent in the range of 10,000-1,000,000 and a viscosity at 25.degree. C. in the range of 10-100,000 cs.

Abstract: A composition useful in the fabrication of extruded articles contains a thermoplastic resin such as polyethylene and from 100-3,000 parts per million of a lubricant which is (i) an organosilicon resinous copolymer having a number average molecular weight of between 1,200-10,000 and R.sub.3 SiO.sub.1/2, R.sub.2 SiO.sub.2/2, RSiO.sub.3/2 and SiO.sub.4/2 units, wherein R is a C.sub.1 -C.sub.6 alkyl, aryl, alkenyl and/or trifluoropropyl radical(s); or (ii) the organosilicon resinous copolymer and a siloxane polymer R.sub.3 SiO(R.sub.2 SiO).sub.n SiR.sub.3 wherein R is as defined heretofore and n is 1-100,000; or (iii) the organosilicon resinous copolymer and an absorbing filler such as silica; or (iv) the organosilicon resinous copolymer, the siloxane polymer and an absorbing filler.

Abstract: An organic pigment, which has been coated by homopolymers or copolymers based on acrylic acid, methacrylic acid and/or alkyl esters thereof on top of a silane film which has itself been adsorbed onto a film of hydrolysed zirconium acetylacetonate, is useful in the warp-free pigmenting of polyolefins.

Abstract: An improved polyarylene sulfide composite material in which particles of layer-structure silicate mineral modified by introduction of organic moieties are dispersed in and ionically or covalently bound to polyarylene sulfide matrix, as well as preparation of said composite material is disclosed.

Abstract: Improved thermoplastic compositions characterized by high tensile elongation values are described. They comprise polyphenylene ether resin, a hydrogenated elastomeric block copolymer having an A-B-A' structure, with specific molecular weight values for the copolymer blocks and a phenylsiloxane fluid of particular composition. Electrical conductor articles which include polymerized thermoplastic compositions as mentioned above represent another embodiment of this invention.

Abstract: A synthetic resin-coated metal pigment such as aluminum pigment has a silne coating covalently bonded to the surface of the pigment particles, and a three-dimensionally cross-linked synthetic resin coating covalently bonded to the siloxane coating. Production of the coated pigment comprises production of a silicon-organic coating on the pigment surface and then conversion of that coating into a siloxane coating by hydrolysis and condensation, followed by reaction with a low-molecular compound for forming the cross-linked synthetic resin coating. A range of uses of the coated pigment is also set forth.