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5312 results about "Diene" patented technology
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In organic chemistry a diene (/ˈdaɪ.iːn/ DY-een) (diolefin (/daɪˈoʊləfɪn/ dy-OH-lə-fin) or alkadiene) is a covalent compound that contains two double bonds, usually among carbon atoms. They thus contain two alkene units, with the standard prefix di of systematic nomenclature. As a subunit of more complex molecules, dienes occur in naturally occurring and synthetic chemicals and are used in organic synthesis. Conjugated dienes are widely used as monomers in the polymer industry. Polyunsaturated fats are of interest to nutrition.
Volatile noble metal organometallic complexes
InactiveUS20050033075A1Reduce Van der Waals interactionBoiling and sublimation temperatureFurnaces without endless coreRuthenium organic compoundsIridiumIodide
A series of noble metal organometallic complexes of the general formula (I): MLaXb(FBC)c, wherein M is a noble metal such as iridium, ruthenium or osmium, and L is a neutral ligand such as carbonyl, alkene or diene; X is an anionic ligand such as chloride, bromide, iodide and trifluoroacetate group; and FBC is a fluorinated bidentate chelate ligand such as beta diketonate, beta-ketoiminate, amino-alcoholate and amino-alcoholate ligand, wherein a is an integer of from zero (0) to three (3), b is an integer of from zero (0) to one (1) and c is an 10 integer of from one (1) to three (3). The resulting noble metal complexes possess enhanced volatility and thermal stability characteristics, and are suitable for chemical vapor deposition(CVD) applications. The corresponding noble metal complex is formed by treatment of the FBC ligand with a less volatile metal halide. Also disclosed are CVD methods for using the noble metal complexes as source reagents for deposition of noble metal-containing films such as Ir, Ru and Os, or even metal oxide film materials IrO2, OsO2 and RuO2.
Owner:NATIONAL TSING HUA UNIVERSITY +1
Resist composition
The following resist composition which is excellent particularly in transparency to light beams and dry etching properties and gives a resist pattern excellent in sensitivity, resolution, evenness, heat resistance, etc., as a chemical amplification type resist, is presented. A resist composition which comprises a fluoropolymer (A) having repeating units represented by a structure formed by the cyclopolymerization of one molecule of a fluorinated diene and one molecule of a monoene, in which the monoene unit in each repeating unit has a blocked acid group capable of regenerating the acid group by the action of an acid, an acid-generating compound (B) which generates an acid upon irradiation with light, and an organic solvent (C).
Owner:ASAHI GLASS CO LTD
Mutliple catalyst system for olefin polymerization and polymers produced therefrom
This invention relates to a polymer of one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ethylene, and polymerization processes for producing the same.
Owner:EXXONMOBIL CHEM PAT INC
Highly-resilient thermoplastic elastomer compositions
A thermoplastic composition of (a) an acid copolymer, (b) a salt of a high molecular weight, monomeric organic acid; (c) a thermoplastic polymer selected from copolyetheresters, elastomeric polyolefins, styrene diene block copolymers, elastomeric polyolefins thermoplastic polyurethanes and copolyetheramides; (d) cation source; and (d) optionally a filler. Also included is use of such compositions in components of one-, two- and three-piece golf balls or multi-layered golf balls made therefrom.
Owner:EI DU PONT DE NEMOURS & CO
Stabilized Iodocarbon Compositions
InactiveUS20080157022A1Reduce environmental damageLow propertyHalogenated hydrocarbon separation/purificationHeat-exchange elementsStabilizing AgentsSolvent composition
Disclosed are compositions comprising at least one iodocarbon compound and preferably at least one stabilization agent comprising a diene-based compound. These compositions are generally useful as refrigerants for heating and cooling, as blowing agents, as aerosol propellants, as solvent composition, and as fire extinguishing and suppressing agents.
Owner:HONEYWELL INT INC
Thermoplastic elastomers having improved processing and physical property balance
InactiveUS6451915B1Without deleteriously sacrificing mechanical propertyEasy to processThermoplasticPolymer science
A thermoplastic elastomer formed by a process comprising the steps of dynamically vulcanizing a rubber within a mixture that includes the rubber, from about 10 to about 80 percent by weight of a thermoplastic resin based upon the total weight of the rubber and the thermoplastic combined, and from about 1 to about 25 percent by weight of a polymeric processing additive based upon the total weight of the rubber and the thermoplastic combined, where the polymeric processing additive is a linear polyolefin resin that has an melt flow rate that is greater than about 1,000 dg / min, a diene-modified polyolefin polymer that has an melt flow rate that is greater than about 1,000 dg / min, from about 0.005 to about 2.00 mole percent polymeric units deriving from dienes, and a viscosity average branching index that is from about 0.4 to about 0.95, or a mixture of the linear polyolefin resin and the diene-modified polyolefin polymer, where the step of dynamically vulcanizing the rubber results in vulcanized rubber having a crosslink density of about 40 to about 180 mole per milliliter of rubber.
Owner:CELANESE INT CORP
Diene rubber composition for tire comprising a specific silica as reinforcing filler
InactiveUS20050004297A1Less-difficult to processReduce hysteresisMaterial nanotechnologySpecial tyresElastomerPorosity
Diene rubber compositions are described containing a diene elastomer, a reinforcing inorganic filler, and a coupling agent wherein the inorganic filler includes a silica having the following characteristics: (a) a BET specific surface area between 45 and 400 m2 / g; (b) a CTAB specific surface area between 40 and 380 m2 / g; (c) an average particle size (by mass), dw, of 20 to 300 nm; and at least one of the following characteristics, preferably two and more preferably all three: (d) a particle size distribution such that dw≧ / CTAB)−30; (e) a porosity which meets the criterion L / FI≧−0.0025 CTAB+0.85; (f) an amount of silanols per unit of surface area, NSiOH / nm2; NSiOH / nm2≦−0.027 CTAB+10.5. These diene rubber compositions can be used for the manufacture of tires or of semi-finished products intended for tires.
Owner:MICHELIN & CO CIE GEN DES ESTAB MICHELIN
Blends and sealant compositions comprising isotactic propylene copolymers
Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising:(A) at least 50 weight percent (wt %) propylene; and(B) at least 5 wt % ethylene and / or one or more unsaturated comonomers.Representative of component (B) unsatuarated comonomers are the C4-20 α-olefins, C4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g / mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and / or the unsaturated comonomer(s), of the copolymer is at least about 3 wt %, (iii) a skewness index, Six, greater than about −1.20, (iv) a DSC curve with a Tme that remains essentially the same and a Tmax that decreases as the amount of comonomer, i.e., the units derived from ethylene and / or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.
Owner:DOW GLOBAL TECH LLC
Crosslinked blends of amorphous and crystalline polymers and their applications
The present invention is broadly directed to a polyolefin polymer composition produced by copolymerizing one or more alpha-olefins and one or more di-olefin monomers in the presence of at least one stereospecific metallocene catalyst system and at least one non-stereospecific metallocene catalyst system. The polymer composition so produced contains amorphous polymer segments and crystalline polymer segments in which at least some of the segments are crosslinked. Both the amorphous and the crystalline polymer segments are copolymers of one or more alpha-olefins and one or more di-olefin monomers. Crosslinking of at least a portion of the mixture of polymer segments is accomplished during the polymerization of the composition by incorporation of single di-olefin comonomers into two polymer segments.
Owner:EXXONMOBIL CHEM PAT INC
Preparation of elastomer with exfoliated clay and article with composition thereof
Owner:THE GOODYEAR TIRE & RUBBER CO +1
Method of preparation of crosslinked blends of amorphous and crystalline polymers
The present invention is broadly directed to a process for copolymerizing one or more alpha-olefins and one or more di-olefin monomers in the presence of at least one stereospecific metallocene catalyst system and at least one non-stereospecific metallocene catalyst system. Crosslinking of at least a portion of the mixture of polymer segments is accomplished during the polymerization of the composition by incorporation of single di-olefin comonomers into two polymer segments.
Owner:EXXONMOBIL CHEM PAT INC
Diene rubber composition for tire comprising a specific silica as reinforcing filler
InactiveUS7250463B2Less-difficult to processReduce hysteresisMaterial nanotechnologySpecial tyresPorosityElastomer
Owner:MICHELIN & CO CIE GEN DES ESTAB MICHELIN
Solid golf ball
A golf ball has a cover member and a core member. The cover member contains: 3 to 30 parts by weight of a thermoplastic elastomer containing polyamide; 5 to 50 parts by weight of a terpolymer ionomer containing ethylene, (meth)acrylic acid, and (meth)acrylic ester; 30 to 80 parts by weight of a copolymer ionomer containing ethylene and (meth)acrylic acid; and 1 to 20 parts by weight of an epoxidized-diene-based block copolymer. The core member is formed by vulcanizing a rubber composition containing: 100 parts by weight of a base rubber, A parts by weight of an alpha, beta-unsaturated carboxylic acid or a metal salt thereof, B parts by weight of an organic peroxide, and C parts by weight of a sulfide where A, B, and C satisfies the relationship:andA lies in the range from 25 to 45.
Owner:DUNLOP SPORTS CO LTD
Process for BTX purification
InactiveUS6500996B1Lowering indexEfficient executionOrganic chemistry methodsTreatment with plural serial refining stagesCobaltChromium
A process for the removal of hydrocarbon contaminants, such as dienes and olefins, from an aromatics reformate by contacting an aromatics reformate stream with a hydrotreating catalyst and / or a molecular sieve. The hydrotreating catalyst substantially converts all dienes to oligomers and partially converts olefins to alkylaromatics. The molecular sieve converts the olefins to alkylaromatics. The process provides an olefin depleted product which can be passed through a clay treater to substantially convert the remaining olefins to alkylaromatics. The hydrotreating catalyst has a metal component of nickel, cobalt, chromium, vanadium, molybdenum, tungsten, nickel-molybdenum, cobalt-nickel-molybdenum, nickel-tungsten, cobalt-molybdenum or nickel-tungsten-titanium, with a nickel molybdenum / alumina catalyst being preferred. The molecular sieve is an intermediate pore size zeolite, preferably MCM-22. The clay treatment can be carried out with any clay suitable for treating hydrocarbons.
Owner:EXXONMOBIL CORP (US)
Ionomer/rubber/polyolefin blend and uses thereof
A thermoplastic ionomer blend or alloy exhibiting advantageous properties upon molding or extrusion and / or thermoforming, consisting essentially of the following components:A. about 15 to 85 parts by weight of a thermoplastic copolymer containing about 91 to 80 weight percent of alpha-olefin units and about 9 to 20 weight percent of alpha, beta-ethylenically unsaturated carboxylic acid units said carboxylic acid units being about 20 to 90 percent neutralized with metal ions, preferably zinc,B. about 10 to 80 parts by weight of a rubber, preferably a thermoplastic elastomer selected from the group consisting of (a) crosslinked ethylene-propylene-diene copolymers and equivalent polyolefin copolymers such as ethylene-butene, hexene, or octene, (b) acrylonitrile-butadiene copolymers, (c) styrene-butadiene copolymers, and (d) styrene acrylonitrile graft-crosslinked butadiene rubbers, andC. about 5 to 40 parts by weight of a thermoplastic polymer selected from the group consisting of polyethylene and polypropylene copolymers and homopolymers, the total number of parts being 100,and molded or extruded and / or thermoformed products produced from the same.
Owner:LYONDELLBASELL ADVANCED POLYMERS INC
Polyolefin adhesive compositions and articles made therefrom
Particular embodiments of the present invention are directed to articles comprising polymers comprising one or more C3-40 olefins, optionally one or more dienes, and less than 5 mole percent ethylene, which dot T-peel The force is 1 Newton or higher, the branching index (g') measured at the Mz of the polymer is 0.95 or lower, and the Mw is 100,000 or lower. The present invention also relates to a method for producing an olefin polymer, comprising: 1) selecting a first catalyst component capable of producing a polymer having a Mw of 100,000 or less and a crystallinity of 20% or less; 2) selecting the a second catalyst component that produces a polymer having a Mw of 100,000 or less and a crystallinity of 40% or more; and 3) combining said catalyst component with one or more activators in the presence of one or more activators C3-40 olefins are contacted in the reaction zone.
Owner:EXXONMOBIL CHEM PAT INC
Irradiation cross-linking oil resistance type soft low smoke zero halogen flame-retardant cable material
ActiveCN102070821AGood oil resistanceGood flexibilityPlastic/resin/waxes insulatorsCross-linkSilanes
The invention provides an irradiation cross-linking oil resistance type soft low smoke zero halogen flame-retardant cable material which comprises the following components in parts by weight: 60-90 parts of ethylene-vinylacetate copolymer, ethylene-propylene-diene rubber and ethylene-octylene copolymer, 0-20 parts of nitrile rubber, 10-30 parts of interface compatilizer, 80-130 parts of flame retardant, 2-15 parts of flame-retardant synergist, 0.5-1.0 part of antioxidant, 1-2 parts of cross-linking sensitizing agent and 0.5-1.0 part of lubricant. The preparation method of the cable material in the invention mainly comprises the steps of silane surface modification treatment of the flame retardant, mixing and extruding of a double screw mixer-extruder unit or an internal mixer unit, brace water cooling or water ring particle cutting and the like. The cable material provided by the invention has the advantages of superior flame resistance (single cable can vertically burn), good mechanical properties, especially high softness, oil resistance, high-temperature resistance (the cable material can be used in a range of minus 40 DEG C-125 DEG C), low smoke, low toxicity and excellent processability.
Owner:JIANGSU DEWEI ADVANCED MATERIALS
Medical use of 1beta-keto-5, 11(13)-diene eudesmane-12-acid for inhibiting hepatitis B virus
InactiveCN1927197APrevention and treatment of viral hepatitis BHBsAg reductionOrganic active ingredientsSugar derivativesDiseasePositive control
The invention involves A 1- beta-keto-5, 11(13)-diene eudesmane-12-acidum who has the structure as formula (1) shows and its medical salt, or solvate and its drug combinations and its medical usage in reducing hepatitis B surface antgien and inhibiting replication activity of aethyl- hepatovirus HBV-DNA medicinal. The invention compounds has strong inhibitory action in hepatitis B surface antgien (HBsAg) externalized by HepG2.2.15 cells and replication of aethyl- hepatovirus deoxyribonucleotide (HBV-DNA) in vitro, its inhibiting ability against HBsAg surpasses that of positive control Lamivudine in the same dose; it has obvious inhibiting ability against replication of aethyl- hepatovirus HBV-DNA under the concentration of 100 mu g / mL,20 mug / mL and 4 mug / mL DNA, it belongs to anti- aethyl- hepatovirus natural products of superactive non-nucleoside, can be expected for producing drugs for treating aethyl- hepatovirus infected disease.
Owner:WENZHOU MEDICAL UNIV
Process for the production of gasolines with low sulfur contents
InactiveUS6692635B2Increase chanceMinimizing the octane lossHydrocarbon by hydrogenationHydrocarbon purification/separationDecompositionGasoline
Process for the production of gasoline with a low sulfur content that comprises at least the following two stages:a) a hydrogenation stage of the unsaturated sulfur containing compounds,b) a decomposition stage of saturated sulfur containing compounds,and optionally a preliminary stage for pretreatment of the feedstock such as selective hydrogenation of dienes.
Owner:INST FR DU PETROLE
Catheter balloon formed of ePTFE and a diene polymer
InactiveUS6946173B2Improve performanceImprove adhesionEnvelopes/bags making machineryMouldsElastomerTetrafluoroethylene
A catheter balloon formed of a polymeric material such as expanded polytetrafluoroethylene (ePTFE) bonded to a second layer formed of a low tensile set polymer and / or impregnated with a low tensile set polymer. In a presently preferred embodiment, the low tensile set polymer is a silicone-polyurethane copolymer elastomer or a diene polymer elastomer. The low tensile set polymer has high strength, low modulus, high elongation, and low tensile set. The diene or silicone-polyurethane has a low tensile set, which facilitates deflation of the balloon to a low profile deflated configuration. One aspect of the invention provides improved attachment of the diene to the ePTFE. In one embodiment, the second layer is formed of a diene mixed with a bonding promoter such as a vulcanizing agent which is covalently bonded to the diene.
Owner:ABBOTT CARDIOVASCULAR
Articles comprising propylene-based elastomers
The present invention is directed generally to the use of propylene-based elastomers in articles. The propylene-based elastomers have isotactic polypropylene crystallinity, a melting point by DSC of 110° C. or less, a heat of fusion of from 5 to 50 J / g, and comprise at least 75 wt % propylene-derived units, at least 6 wt % ethylene-derived units, and optionally diene-derived units. The present invention is also directed to processes for making articles comprising propylene-based elastomers.
Owner:EXXONMOBIL CHEM PAT INC
Hot melt sealant and foam-in-place gasketing material
ActiveUS20070042193A1Good balance of propertyImprove adhesionSynthetic resin layered productsOrganic dyesPolymer scienceSealant
A hot melt sealant and foam-in-place gasket composition based on a rubber such as ethylene propylene rubber (EPR) and / or ethylene propylene diene rubber (EPDM) and at least one semicrystalline olefinic polymer. The hot melt composition includes the rubber or a blend of rubbers in an amount of 5% to 50% by weight, at least one semicrystalline olefinic polymer in an amount of 5% to 40% by weight, at least one amorphous poly-α-olefin (APAO) polymer in an amount of 0% to 70% by weight, a compatible tackifier in an amount of 0% to 50% by weight, and a plasticizer in an amount of at least 30% by weight. The composition is particularly useful for foamed gasket applications as a replacement for pressure sensitive adhesive (PSA) coated foam tape.
Owner:BOSTIK INC
Elastomer composition which contains intercalated and exfoliated clay reinforcement formed in situ within the elastomer host and article, such as a tire, having at least one component thereof
This invention relates to a rubber composition which contains intercalated and at least partially exfoliated organophillic clay reinforcement formed in situ within the elastomer host from a hydrophilic clay. The invention particularly relates to an in situ modification of a hydrophilic clay to compatibilize the clay with a diene-based elastomer. The clay is converted from being hydrophilic in nature to being more hydrophobic in nature and therefore more compatible with the elastomer by bulk blending the elastomer host with a smectite clay, preferably a montmorillonite or hectorite clay, and a hydrocarbyl onium salt, such as for example a quaternary ammonium salt, and particularly in the absence of water addition to the elastomer host. Therefore, such in situ procedure of intercalation and at least partially exfoliation relies upon a bulk blending thereof with an elastomer host at an elevated temperature and under high shear conditions in contrast to pre-intercalating the clay in an aqueous based medium and in contrast to simple low viscosity melt processing of a thermoplastic polymer. The invention also relates to articles of manufacture, including tires, having at least one component comprised of such rubber composition. Such tire component may be, for example, a tire tread.
Owner:THE GOODYEAR TIRE & RUBBER CO +1
Tread for a tire having a rigidity gradient
InactiveUS7199175B2Obtained simply and economicallyAccurate gradientSpecial tyresTyre tread bands/patternsElastomerEngineering
A tire tread comprising a rubber composition based on (phr: parts by weight per hundred parts of elastomer):(i) a diene elastomer;(ii) more than 50 phr of an inorganic filler as reinforcing filler;(iii) between 2 and 15 phr of an (inorganic filler / diene elastomer) coupling agent;(iv) between 1 and 10 phr of a methylene acceptor, and(v) between 0.5 and 5 phr of a methylene donor.This tread has, after mechanical running-in of the tire for which it is intended (“auto-accommodation”), a rigidity gradient which increases radially from the surface towards the inside of the tread. Use of such a tread for the manufacturing or recapping of tires. Tires comprising a tread according to the invention, in particular of the snow or ice type (“winter” tires).
Owner:MICHELIN RECH & TECH SA
Self-sealing pneumatic tire and preparation thereof
This invention relates to a pneumatic tire with puncture sealing property and a method for preparing such tire. Such tire is prepared by building an uncured butyl rubber-based layer, which contains a peroxide and a dispersion therein of a particulate precured rubber selected from pre resin-cured butyl rubber and / or pre sulfur-cured diene-based elastomer, into an uncured tire and between an innerliner layer and the tire carcass. Upon curing the prepared tire under conditions of elevated temperature, a major portion of the uncured butyl rubber composition is depolymerized to form a tacky material, which contains said dispersion therein of said particulate precured rubber, which has puncture sealant properties. Such layer of depolymerized butyl rubber and dispersed precured rubber particles may be collectively referred to as the sealant layer.
Owner:THE GOODYEAR TIRE & RUBBER CO
Oxidized grapheme/carbon black rubber nanocomposite and preparation method thereof
The invention provides an oxidized grapheme / carbon black rubber nanocomposite and preparation method thereof, which belongs to the field of rubber nanocomposite technology. The nanocomposite comprises the following basic compositions by mass: 100 parts of diene series rubber matrix, 0.5-5 parts of oxidized grapheme, 30-70 parts of hard carbon black of average particle size 11-30nm, 1-10 parts of plasticizer, 6-10 parts of activator, 0.5-4 parts of anti-aging agent, 1-4 parts of sulfuration promoter and 1-6 parts of insoluble sulphur; oxidized grapheme modifier. The oxidized grapheme powder is dispersed in deionized water for ultrasound, and a natural rubber emulsion is added, and masterbatch after flocculation, washing and drying is mixed uniformly with other additives, after sulfuration, the product is obtained. The oxidized grapheme / carbon black rubber nanocomposite has the advantages of excellent processing performance and obviously reduced dynamic themogenesis, thereby improving the usage life of tyre.
Owner:BEIJING UNIV OF CHEM TECH
Highly-stable polymeric electrolyte and use thereof in electrochemical systems
ActiveUS20050234177A1Hybrid capacitor electrolytesHybrid capacitor electrodesPolymer electrolytesElectrolysis
Polymer electrolyte for an electrochemical generator based on at least a four branched polymer, at least a poly(vinylyldienefluoride), a poly(vinyldiene fluoro-co-hexafluoropropene copolymer), a poly(tetrafluoroethylene), a poly(ethylene-co-propylene-co-5-methylene-2-norbornene) or an ethylene propylene-diene copolymer, a polyol, a poly(methylmethacrylate, a poly(acrylonitrile), SiO2Al2O3, or nano TiO2 non coated or coated with an organic material. This electrolyte allows to prepare electrolytic compositions that can be used in high performance electrochemical devices.
Owner:HYDRO QUEBEC CORP
Thermoplastic elastomers having improved set foams made therefrom
A thermoplastic vulcanizate prepared by a process comprising the steps of dynamically vulcanizing a vulcanizable rubber within a mixture that includes from about 15 to about 90 percent by weight of the rubber and from about 10 to about 85 percent by weight of a long-chain branched thermoplastic resin, where the long-chain branched thermoplastic resin is (i) an alpha-olefin polymer, (ii) a copolymer of an alpha-olefin and an alpha-omega-olefin diene, or (iii) a mixture thereof, where the long-chain branched thermoplastic resin is characterized by a weight average molecular weight from about 100,000 to about 600,000, a number average molecular weight from about 40,000 to about 200,000, a z-average molecular weight from about 400,000 to about 2,000,000, a <g'>vis from about 0.2 to about 0.95, and a melt flow rate from about 0.3 to about 30 dg / min.
Owner:CELANESE INT CORP
Rubber composition for use in tires
ActiveUS20110144236A1Good dispersionImprove wet grip performanceSpecial tyresPolishing compositionsVitrificationPolymer science
A rubber composition for use in tires including from 60 to 120 parts by weight of a silica having a CTAB specific surface area of from 70 to 175 m2 / g and from 3 to 25 parts by weight of an aromatic modified terpene resin excluding terpene phenol resins per 100 parts by weight of a diene rubber including from 30 to 80 weight % of a terminal-modified styrene-butadiene rubber and from 10 to 50 weight % of a butadiene rubber. An average glass transition temperature of the diene rubber is −55° C. or lower and an average glass transition temperature of a component formed from the diene rubber, the aromatic modified terpene resin, and an optional plasticizer is −45° C. or lower.
Owner:YOKOHAMA RUBBER CO LTD
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