Abstract: A curable polymer latex composition obtainable by: (a) subjecting a monomer mixture comprising i. at least one conjugated diene; ii. at least one ethylenically unsaturated nitrile; iii. optionally at least one ethylenically unsaturated acid; iv. optionally at least one further ethylenically unsaturated compound different from any of the compounds (i)-(iii); to free-radical emulsion polymerization in an aqueous reaction medium to form a raw polymer latex; and (b) allowing the obtained raw latex to mature in the presence of at least one thiocarbonyl-functional compound, wherein the at least one thiocarbonyl-functional compound is present in an amount of at least 0.05 wt.-%, based on the total amount of monomers subjected to free-radical emulsion polymerization in step (a), and (c) optionally compounding the matured polymer latex with one or more cross-linking agent. Methods for making such curable polymer latex composition or rubber articles made therefrom, respectively.

Abstract: The present disclosure provides a composite electrode, an acoustic sensor using the composite electrode, and a manufacturing method of the composite electrode. The composite electrode includes a conductive layer, and a semiconductor high-molecular polymer layer formed on the conductive layer. The semiconductor high-molecular polymer layer has a three-dimensional mesh structure. The acoustic sensor includes a base; the above-mentioned composite electrode formed on the base; an organic layer formed on the composite electrode; and a top electrode formed on the organic layer.

Abstract: Edge seals for composite structure fuel tanks are disclosed herein. One disclosed apparatus includes a seal covering an exposed edge of a carbon fiber reinforced composite fuel tank, where the seal comprises a layer of dielectric material to insulate carbon fibers at the exposed edge from fuel in the tank.

Abstract: A polymerizable composition for polythiourethane optical materials comprising a compound represented by the general formula (1), M(L)n??(1) wherein, in the formula, M is Al, Fe, Cu, Zn, Zr or Bi; L is a dithiocarbamic acid group, a sulfonic acid group, a mono- or di-alkyl phosphoric acid ester group, a substituted acetylacetonato group or a halogen; and n is an integer of 1 to 5, one or two or more isocyanates selected from the group consisting of isocyanate compounds and isothiocyanate compounds, and one or two or more active hydrogen compounds each having a mercapto group. The compounds represented by the general formula (1) exhibit catalytic activity equal to or superior to that of organotin catalysts having been employed as catalysts for the production of polythiourethane optical materials from the past, and have high safety. Further, the thus obtained polythiourethane resins satisfactorily meet the property requirements for optical materials, in particular, excelling in weather resistance.

Abstract: A phosphorus-free based halogen-free flame-retardant resin composition includes a base polymer including a copolymer of ethylene and ?-olefin having carbon number of 3 to 8 polymerized by a metallocene catalyst as a main component, and 5 to 30 weight % of an ethylene-vinyl acetate copolymer that has a melt flow rate of not less than 50 g/min and a vinyl acetate content of not less than 40%, a metal hydroxide blended with the base polymer in a ratio of 100 to 250 parts by weight relative to 100 parts by weight of the base polymer, and a mineral oil blended with the base polymer in a ratio of 1 to 20 parts by weight relative to 100 parts by weight of the base polymer.

Abstract: Systems and compositions have a three component antioxidant blend for extending color and clarity of a thermoplastic polymer. The antioxidant blend includes a zinc dithiocarbamate, a phenolic and a thioether with a weight ratio range of about 1-2:1-2:1-2. A loading level of the antioxidant blend is from about 0.01 wt. % to about 1 wt. % of the systems and compositions.

Abstract: Systems and compositions have a three component antioxidant blend for extending color and clarity of a thermoplastic polymer. The antioxidant blend includes a zinc dithiocarbamate, a phenolic and a thioether with a weight ratio range of about 1-2:1-2:1-2. A loading level of the antioxidant blend is from about 0.01 wt. % to about 1 wt. % of the systems and compositions.

Abstract: The present invention relates to a bituminous composition comprising a bituminous component, an elastomeric polymer component, and a specific cross-linking composition component comprising elemental sulfur, a sulfur-containing derivative, a sulfur activator, a fatty acid or fatty acid derivative and a polymeric carrier. Compositions according to the invention are particularly useful in preparing polymer-modified asphalt (“PMA”) for road applications.

Abstract: There is provided a packaging material for a photographic light-sensitive material, the packaging material being formed from a resin composition that contains a compound having an unsaturated double bond or that contains a poly(conjugated diene) component, a metal ion that can promote a catalytic oxidation reaction of the unsaturated double bond and the poly(conjugated diene), and a chelating agent that can coordinate the metal ion in an amount sufficient to suppress the catalytic oxidation reaction. There is also provided a photographic light-sensitive material package formed by housing the photographic light-sensitive material in the packaging material for the photographic light-sensitive material.

Abstract: A rubber composition comprises (1) a rubber component including at least one of polybutadiene rubber and a styrene-butadiene copolymer rubber having a content of vinyl bond of not less than 30%, (2) at least one specified compound as a vulcanization accelerator, and (3) a specified organic thiosulfate compound as a vulcanizing agent.

Abstract: The invention pertains to an accelerator system, such as an accelerator system for synthetic polyisoprene latex. The accelerator system comprises dithiocarbamate and thiourea and can produce synthetic polyisoprene films having a tensile strength of about 3,000 psi to about 5,000 psi at low curing temperatures. The invention also pertains to a method for curing synthetic polyisoprene latex.

Abstract: The invention is the manipulation of the zinc oxide content and sulfur content of nitrile butadiene rubbers and selected vulcanization conditions that can be achieved economically with common production facilities. The manipulation of these components affects the relaxation property of gloves formed by this material. Produced are gloves that have a relaxation property, higher than 50%, and a low modulus (approximately 3 Mpa). The glove maintains decent ultimate tensile strength (>20 Mpa) and elongation (>500%). The glove is produced by a vulcanization process, which lasts from 5 to 60 minutes at temperatures ranging from 300° F. to 400° F. The tensile strength and elongation are well above the ASTM requirements for medical gloves. The current ASTM requirements are ASTM D412-92. Thanks to sufficient vulcanization, the films produced provide satisfactory protection from viral penetration. The tearing strength is also better because of the lower modulus.

Abstract: There is disclosed a composition for a soft (non-metal) sealing material having the following percentage composition based on the overall composition: from 4 to 9 wt. % of fibrillated polyaramide fibers; less than 60 wt. % of powder graphite having a carbon content of 90 to 92 wt. % and such particle size distribution that at least 85% of all particles are in the size range of 10 &mgr;m to 50 &mgr;m; about 30 wt. % of mineral fillers represented by a combination of microsilica having a SiO2 content between 90 and 95 wt. %, a specific surface area according to BET method of 15 to 25 m2/g and such particle size distribution that at least 90 wt. % of all particles are in the particle size range under 5 &mgr;m, and of an active mineral filler having a SiO2 content of at least 98 wt. %, a specific surface area according to BET method of 100 to 120 m2/g and such particle size distribution that at least 90 wt.

Abstract: The invention relates to a resin composition exhibiting excellent coatability and capable of forming coatings with high hardness, superior scratch resistance, low curling properties, superb adhesion, excellent transparency, and superior coating surface appearance without a wavy striation, streaks, unevenness of coatings, cissing, and the like, as well as cured products made from the resin composition.

Abstract: A hardener for use in urea-formaldehyde and urea-melamine-formaldehyde based adhesives comprises a polyvinyl acetate emulsion together with a metal chloride and an ammonium salt. The adhesive composition comprising a urea-formaldehyde or urea-melamine-formaldehyde resin, and the above hardener provides an increased curing rate, an acceptable viscosity, better adhesion and greater tolerance towards substrate type.

Abstract: A method and composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the composition basically comprises a mixture of latex, dithio carbamate, zinc oxide, and sulfur.

Abstract: The invention is the manipulation of the zinc oxide content and sulfur content of nitrile butadiene rubbers and selected vulcanization conditions that can be achieved economically with common production facilities. The manipulation of these components affect the relaxation property of gloves formed by this material. Produced are gloves that have a relaxation property, higher than 50%, and a low modulus (approximately 3 Mpa). The glove maintains decent ultimate tensile strength (>20 Mpa) and elongation (>500%). The glove is produced by a vulcanization process which lasts from 5 to 60 minutes at temperatures ranging from 300° F. to 400° F. The tensile strength and elongation are well above the ASTM requirements for medical gloves. The current ASTM requirements are ASTM D412-92. Thanks to sufficient vulcanization, the films produced provide satisfactory protection from viral penetration. The tearing strength is also better because of the lower modulus.

Abstract: A composition is disclosed that comprises:

Abstract: A new formulation for producing nitrile gloves has been developed. The resulting glove shows following outstanding characteristics: stress at six minutes greater than 50% of its initial value; ultimate tensile strength and elongation well above ASTM requirements; and much lower modulus than almost all the nitrile gloves currently commercially available. The unique formulation is zinc oxide free and is vulcanized from 5 to 60 minutes at temperatures ranging from 300° F to 400° F.

Abstract: A composite paramagnetic particle and method of making are provided. In one aspect of the invention, a particle comprising a multitude of submicron polymer bead aggregates covalently cross-linked to each other to form larger diameter particles is presented. Distributed throughout the composite paramagnetic particle are vacuous cavities. Each submicron polymer bead has distributed throughout its interior and surface submicron magnetite crystals. In another aspect of the invention, composite particles are made using high energy ultrasound during polymerization of one or more vinyl monomers. In one embodiment, high energy ultrasound is used during an emulsification step and during the early stages of the polymerization process to produce micron sized composite paramagnetic particles. The particles according to the invention exhibit a high percent magnetite incorporation and water and organic solvent stability.

Abstract: The present invention provides radiation-curable compositions for coating plastic substrates, wherein the compositions, after cure, have a combination of sufficient adhesion, flexibility, and hardness.

Abstract: This invention provides transparent resin compositions with excellent near infrared absorption characteristics comprising 100 parts by weight of a transparent thermoplastic resin, about 0.01 to about 2 parts by weight of a specific copper dithiocarbamate compound, and about 0 to about 2 parts by weight of a specific copper compound.

Abstract: This invention provides transparent resin compositions of polycarbonate, polyester, methacrylic, styrene, polyvinyl chloride, polyolefin, and polyamide resin, having the advantageous effects of efficiently absorbing near infrared radiation (780-1800 nm) and efficiently transmitting visible light (380-780 nm).

Abstract: A hydrophilic coating having excellent hydrophilicity, which can prevent offensive odor generation, and which has a good antibacterial performance and formability, is formed on an aluminum-containing metal material by coating an aqueous hydrophilization treating liquid containing (A) a glycidyl group-containing, water-soluble organic compound; (B) a water-soluble polymeric or polymerizable compound having a tert-amino group and at least one hydrophilic functional group selected from sulfonic, phosphonic, carboxyl, polyalkyleneglycol, hydroxyl and amide groups; and (C) an antibacterial agent not decomposing at 100° C. or lower, on an aluminum-containing metal material; and heat-drying the coated liquid.

Abstract: An inkjet printing coating compositions and recording sheets having printable coating compositions on substrates which are suitable for photographic quality prints by inkjet printing technology, such as thermal and piezo. The recording sheet which comprises a substrate and a dried coating composition on the substrate, which coating composition comprises either (i) a hydrophilic or amphiphilic polyether polyurethane plus one or more polymers selected from the group consisting of cellulose ester polymers, cellulose ether polymers and vinyl polymers or (ii) cellulose acetate trimellitate plus optionally one or more polymers selected from the group consisting of cellulose ester polymers, cellulose ether polymers and vinyl polymers; a quaternary ammonium compound; a metal salt chelating agent; and a microcrystalline filler drying agent.

Abstract: A rubber composition comprising: (A) at least one copolymer ingredient selected from the group consisting of ethylene/&agr;-olefin copolymer rubber and ethylene/&agr;-olefin/unconjugated diene copolymer rubber, (B) nickel diisobutyldithiocarbamate, and (C) carbon black, and not containing any compound having zinc; a vulcanized rubber composition obtained by vulcanizing the rubber composition; and a heat-resistant rubber product using the vulcanized rubber composition.

Abstract: The present invention is directed to an improvement in a wire or cable system comprising a wire or cable portion, an insulation composition surrounding the wire or cable portion, a filler material surrounding the insulation composition and a jacket composition surrounding the filler material wherein either the insulation composition, the jacket composition, or both comprise at least one antioxidant, wherein the improvement comprises the inclusion in the filler material of a stabilizing mixture comprising at least two antioxidants, selected from at least two members of the group consisting of:(a) metal dithiocarbamate salts,(b) amine antioxidants, and(c) sterically hindered phenolic antioxidants,wherein the stabilizing mixture is present in the filler material in an amount that is effective for the reduction of the oxidation of the cable filling material, thereby reducing deterioration of the jacket and/or insulation.

Abstract: The invention disclosed relates to an injection mouldable synthetic rubber composition which provides twenty-four hour protection from penetration by H-agent and as such is particularly suitable for use in gas masks. The novel rubber composition comprises a synthetic rubber such as bromobutyl rubber, carbon black and other appropriate additives.

Abstract: Cyclic polyoxymethylene having a number-average molecular weight of 500 to 5,000 is obtained by solid state cyclization reaction of an alkalidegradative linear oxymethylene homopolymer in the presence of a medium containing a cationic catalyst.The cyclization is effected at 10.degree. to 150.degree. C. for 1 to 500 minutes in an organic liquid medium.The reaction mixture obtained by the cyclization is treated with an alkaline medium to hydrolyze and remove away unreacted linear polyoxymethylene homopolymer, and isolate the cyclic polyoxymethylene.The product has a sharp molecular weight distribution and is useful as a resin improver.

Abstract: The invention relates to silicate mineral filled polyolefin compositions which are stabilized against color deterioration during processing by incorporting therein a synergistic color stabilizer composition consisting of zinc dibutylidthiocarbamate and zinc stearate in critical ratios.

Abstract: A combination of free radical retarding agent and an active iodine species selected from the group consisting of molecular iodine, iodide ion, and mixtures thereof provides synergistic stabilization of thiol-ene compositions which cure by addition of thiol groups to olefinic carbon-carbon double bonds. The combination is particularly suitable for thiol-ene formulations employing norbornenyl functional polyenes. A preferred stabilization system employs an N-nitrosoarylhydroxylamine salt and a mixture of an alkali iodide and I.sub.2 in the range of 0.6-1 mole I.sub.2 per equivalent I.sup..crclbar..

Abstract: Curable resinous compositions which comprise (a) a metal element-containing inorganic filler which has been treated with an oxo acid of pentavalent phosphorus or a derivative thereof, which has the general formula: ##STR1## wherein A.sub.1 is an organic group having at least one ethylenic double bond capable of radical polymerization and containing 5 to 60 carbon atoms, A.sub.2 is a hydroxyl or mercapto group, a halogen atom or an organic group containing 1 to 60 carbon atoms, at least one of A.sub.1 and A.sub.2 contains at least one hydrocarbyl group containing 4 to 60 carbon atoms, X.sub.1 is an oxygen or sulfur atom and X.sub.2 is a hydroxyl or mercapto group of a halogen atom, and (b) at least one monomer capable of radical polymerization which is selected from the group consisting of methacrylates and acrylates, are useful for the production of cured articles which may be used in dentistry.

Abstract: The thermal oxidative stability of polyketones is improved by the addition of a dihydrocarbyldithiocarbamate salt of a metal selected from Group IIIB through Group VA or a mixture thereof.

Abstract: An aqueous printing ink or its semiaqueous or substantially nonaqueous concentrates exemplified as comprising a substantially homogeneous system of the components:(1) from about 4 to about 90 weight % of one or more polyester materials having an acid component of from about 75 to about 84 mole % isophthalic acid and conversely from about 25 to about 16 mole % 5-sodiosulfoisophthalic acid, and having a glycol component of from about 45 to about 60 mole % diethylene glycol and conversely from about 55 to about 40 mole % 1,4-cyclohexanedimethanol or ethylene glycol or mixtures thereof;(2) from none to about 70 weight % of pigment material;(3) from about 0.01 to about 90 weight % of water; and(4) one or more acetylacetonates of the formula M[CH--(COCH.sub.3).sub.2 ].sub.n wherein M is Al, Zr, Ni, Ca, V, or Fe, and n is the chemical valence of M, the weight ratio of polyester to total acetylacetonates being from about 10,000/1 to about 10/1.

Abstract: Golf balls exhibiting a satisfactory coefficient of restitution while having higher Riehle compression and hence a softer feel are provided by the inclusion of a metallic dithiocarbamate in the core formulation.

Abstract: A chlorosulfonated ethylene..alpha.-olefin copolymer composition is disclosed, comprising(a) 100 parts by weight of a chlorosulfonated ethylene..alpha.-olefin copolymer containing from 25 to 32% by weight chlorine and from 0.3 to 2.5% by weight sulfur,(b) from 10 to 35 parts by weight of a hydrotalcite,(c) from 0.5 to 5 parts by weight of a thiuram, and(d) from 0.5 to 5 parts by weight of a maleimide.The chlorosulfonated ethylene..alpha.-olefin copolymer of the invention provides vulcanized products having excellent heat resistance, cold resistance and water resistance.

Abstract: An elastomeric mass of polychloroprene sol and polychloroprene gel in proportions in the range of 95:5 to 25:75% by weight in which the polychloroprene sol is free from sulphur and the polychloroprene gel used is a sulphur-containing gel with xanthate or carbamate functions has better processing characteristics than the pure sol component without the expected deterioration in the mechanical properties of the vulcanisates prepared from the mass.

Abstract: An adhesive composition useful for adhesion of rubber to metal is produced by dissolving a chlorinated type polymer and a petroleum resin, optionally in combination with a dithiocarbamate, in an organic solvent.

Abstract: A composition which comprises a polymer and a nickel dialkyldithiocarbamate of the formula (R.sup.1 R.sup.2 NCSS).sub.2 Ni, wherein R.sup.1 and R.sup.2 are the same or different branched-chain C.sub.5-18 alkyl groups. Such a composition, which preferably additionally comprises a zinc dialkyldithiocarbamate, can be used, e.g. in film or sheet form, to protect flora at an agricultural or horticultural locus.

Abstract: A crosslinkable composition of a polymeric thermoplastic and/or elastomeric material which is susceptible to scorching when processed at elevated temperatures, prior to crosslinking, in the presence of a free radical initiator, is protected against such scorching by the incorporation therein of a mixture of at least two metal salts of disubstituted dithiocarbamic acid, wherein one metal salt is based on copper.

Abstract: A marine paint capable of becoming smoother in relatively moving sea-water comprises a film-forming copolymer and a metalliferous pigment which is sparingly soluble in sea-water. The copolymer comprises 20-80 percent by weight of units of a quinolinyl or substituted quinolinyl ester of an olefinically unsaturated carboxylic acid with the balance of the copolymer being units of at least one olefinically unsaturated comonomer or comprises 10 to 80 percent by weight of (a) units of a quinolinyl or substituted quinolinyl ester of an olefinically unsaturated carboxylic acid, up to 60 percent by weight of (b) units of a triorgano tin salt of an olefinically unsaturated carboxylic acid, with (a) and (b) together forming 20 to 80 percent by weight of the copolymer, and the balance of the copolymer being units of at least one olefinically unsaturated comonomer.

Abstract: The heat stability of arylene sulfide polymers, such as poly(p-phenylene sulfide), is improved by the addition of cure retarders comprising Group 8 metal dihydrocarbyldithiocarbamates.

Abstract: Resins suitable for adhesives are based on .alpha.-methyl styrene, styrene and phenol in certain percentages, viz. 25 to 63, 35 to 73 and 2 to 15 percent by weight, respectively.Combinations of resin, ethylene vinyl acetate copolymer, atactic polypropylene, ethyl acrylate copolymer or a thermoelastomer and optionally a wax or tackifying oil yield excellent adhesives, in particular hot-melt adhesives.

Abstract: A marine paint capable of becoming smoother in relatively moving sea water and having no or a low content of organotin comprises a film-forming acrylic polymer and a metalliferous pigment which is sparingly soluble in seawater. The acrylic polymer comprises 20-100 percent by weight of monomer units (A) selected from methyl acrylate and ethyl acrylate units, 0-45 percent by weight of monomer units (B) of a triorganotin salt of an olefinically unsaturated carboxylic acid and 0-80 percent by weight of monomer units (C) which are alkyl methacrylate units having 1-4 carbon atoms in the alkyl group or styrene units. Monomer units (A), (B) and (C) form at least 80 percent by weight of the acrylic polymer; the balance of the polymer if any comprises units of at least one other olefinically unsaturated comonomer.

Abstract: A method is provided for making abrasion resistant, non-opaque thermoplastic articles, for example, silicone-coated polycarbonate sheet useful as glazing material. A mixture of a certain UV absorber, for example a cyanoacrylate, and light stabilizer, such as a piperidine derivative, has been found to impart improved weathering resistance to the silicon-coated thermoplastic articles when used as part of an acrylic primer coating between the silicone top coat and the thermoplastic substrate.

Abstract: Smoke suppressed rigid polyurethane foams are prepared from a reaction mixture comprising as the smoke suppressant additive a metal salt of a: dialkyl dithiocarbamate, a mercaptobenzothiazole, a 2,5-dimercapto-1,3,4-thiadiazole, a mercaptotriazine, a hydroxy thiophenol or an aliphatic dimercapto compound of 2 to 10 carbons.

Abstract: Selected sulfur-containing compounds function as solution viscosity stabilizers in aqueous compositions comprising acrylamide polymers containing a redox couple or components which can produce a redox couple in the presence of the solution. The aqueous compositions are useful in post-primary oil recovery involving the use of thickened fluids as mobility buffers and mobility control agents.