X=c-n Group Wherein X Is A Chalcogen Patents (Class 524/191)
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Polymer compositions of improved scratch resistance, improved mechanical stability and improved haze
Patent number: 11401399Abstract: The present invention provides a composition comprising (i) a polymer, (ii) an organic compound A carrying at least two amide functionalities, and (iii) 12 to 1'000 parts per million (ppm) of a compound B selected from the group consisting of an organic compound C carrying at least two amide functionalities, sugar alcohol acetals and derivatives thereof, metal salts of organic acids and precursor-systems thereof, metal salts of organic phosphoric acids and precursor-systems thereof and metal salts of polyols and precursor-systems thereof, and mixtures thereof, based on the weight of the polymer, as well as shaped articles obtainable from this composition.Type: GrantFiled: September 7, 2010Date of Patent: August 2, 2022Assignee: BASF SEInventors: Per Magnus Kristiansen, Daniel Müller, Michèle Gerster -
Patent number: 8778471Abstract: A propylene resin composition which contains as essential components thereof (A) an ethylene-propylene random copolymer having an ethylene content of 0.5 to 3.0 parts by mass; (B) an elastomer having an average particle diameter of 10 to 800 nm in an amount of 1 to 10 parts by mass based on 100 parts by mass of the ethylene-propylene random copolymer; and (C) a crystalline nucleating agent, and in which after kneading thereof, the kneaded propylene resin composition exhibit a melt flow rate (MFR) of 0.01 to 1.00 g/10 min. The propylene resin composition is suitable for the production of a wide variety of molded articles.Type: GrantFiled: January 14, 2011Date of Patent: July 15, 2014Assignee: Asahi Organic Chemicals Industry Co., Ltd.Inventors: Hidehiro Kourogi, Chisato Nakazono
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Patent number: 8729153Abstract: An aqueous pigment dispersion which contains C.I. Pigment Yellow 74, a styrene-acrylic-based resin with an acid number of 100 to 250, and a basic compound, wherein the styrene-acrylic-based resin includes at least styrene-based monomer units, acrylic acid monomer units, and methacrylic acid monomer units as component monomer units, and the weight average molecular weight of the resin is within a range from 7,000 to 15,000.Type: GrantFiled: September 10, 2004Date of Patent: May 20, 2014Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Hiroshi Harada, Sadahiro Inoue
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Patent number: 8440300Abstract: Coated polyoxymethylene moldings comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide C1 or a polyvinyl ester C2 or a graft polymer C3 composed of C1 and C2 or a mixture of these, and the formaldehyde scavenger D) used comprises at least one hydrazide compound.Type: GrantFiled: January 20, 2009Date of Patent: May 14, 2013Assignee: BASF SEInventors: Karthikeyan Sharavanan, Jens Assmann, Lidcay Herrera Taboada, Rainer Anderlik
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Publication number: 20120277358Abstract: The use of nucleating agents to manufacture polymeric stents is disclosed. The resulting stents may have increased crystallinity, decreased crystal size, increased mechanical properties, and faster degradation times.Type: ApplicationFiled: July 12, 2012Publication date: November 1, 2012Applicant: Abbott Cardiovascular Systems Inc.Inventor: Yunbing Wang
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Publication number: 20120200650Abstract: Non-aqueous pigment dispersions exhibiting improved dispersion quality and/or stability were prepared for a specific selection of naphthol AS pigments, diketopyrrolo-pyrrole pigments and quinacridone pigments, by using specific yellow monoazo dispersion synergists. The non-aqueous pigment dispersions can be advantageously used in inkjet inks inkjet printing methods.Type: ApplicationFiled: October 15, 2010Publication date: August 9, 2012Applicant: AGFA-GEVAERT N.V.Inventor: Geert Deroover
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Patent number: 8153043Abstract: The present invention provides bimodal polyethylene resins in which the high molecular weight ethylene copolymer component typically has a relatively narrow molecular weight distribution, with short chain branching content being substantially constant across its molecular weight distribution. The resins of this invention are typically characterized by improved toughness and resistance to slow crack propagation properties making them useful for pressure pipe applications.Type: GrantFiled: September 21, 2011Date of Patent: April 10, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Rajendra K. Krishnaswamy, Qing Yang
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Patent number: 8147606Abstract: A wax composition comprises at least three amide waxes A, B, and C, where amide wax A is the reaction product of alkylenediamine with linear fatty acids or with mixtures composed of fatty acids, amide wax B is the reaction product of alkylenediamine with 12-hydroxystearic acid, and amide wax C is the reaction product of alkylenediamine with 12-hydroxystearic acid and with linear fatty acids. The wax composition is suitable as a processing aid in engineering thermoplastics or for the preparation of solvent-based wax pastes or the preparation of wax micronizates for coatings or for the preparation of aqueous dispersions.Type: GrantFiled: January 26, 2010Date of Patent: April 3, 2012Assignee: Clariant Finance (BVI) LimitedInventor: Franz-Leo Heinrichs
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Patent number: 8129462Abstract: The present invention is directed to an extrudable resin composition and a method of extruding the extrudable resin composition, comprising a high temperature engineering thermoplastic, one or more reinforcement components, an enhancing filler component, a polymeric lubricant, and an external lubricant, wherein the extrudable resin composition is capable of withstanding temperatures up to about 427° C. The invention is further directed to the use of the extruded pipes and/or lined pipes, produced according to the present method, in downhole tubular applications in oil and gas production; in line pipe, flow line, and transportation line applications in oil and gas production and supply operations; or in most any application where corrosive protection is required to transmit or store corrosive fluids, particularly at high temperatures.Type: GrantFiled: August 19, 2003Date of Patent: March 6, 2012Assignees: Robroy Industries, Inc., Polymics, Ltd.Inventors: Tim Hsu, John Joseph Dodds
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Patent number: 8063126Abstract: An olefine polymer composition comprises a stabilizing amount of a metal deactivator comprising a polymeric hydrazine derivative. The deactivator is of formula (I), in which at least one of R1 and R2 comprise a polymeric radical that includes a substituted or unsubstituted aromatic radical, provided that R1 and R2 are not both of formula (II). The olefin polymers include polyethylene and polypropylene.Type: GrantFiled: March 17, 2008Date of Patent: November 22, 2011Assignee: Dow Global Technologies LLCInventors: Pascal E. R. E. J. Lakeman, Thoi H. Ho, Ronald Wevers
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Publication number: 20110218279Abstract: The present invention provides a polyolefin-based resin composition containing a crystal nucleating agent having a specific structure, which polyolefin-based resin composition has a superior transparency and whose crystallization is facilitated. The polyolefin-based resin composition is characterized by comprising, with respect to 100 parts by mass of a polyolefin-based resin, 0.Type: ApplicationFiled: August 21, 2009Publication date: September 8, 2011Inventors: Tsuyoshi Urushihara, Kazukiyo Nomura, Naoto Ueda, Yota Tsuneizumi
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Patent number: 8003712Abstract: A polyester resin component having crystallization improved and including a cyclic compound shown by a below-described formula and polyester capable of having a crystal structure: In the formula, each of ring A and a ring B is a benzene ring, and the hydrogen bonded to the benzene rings be substituted with other groups. Additionally, Y is —CONH— or —NHCO— and X is a heterocyclic group or a condensed heterocyclic group including one or more NH or CO.Type: GrantFiled: February 12, 2010Date of Patent: August 23, 2011Assignee: Sony CorporationInventors: Noritaka Sato, Tsutomu Noguchi, Hiroyuki Mori
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Patent number: 7951859Abstract: Compositions including a polymer, a primary antioxidant, a secondary antioxidant, and a metal deactivator selected from at least one of 2,2?-oxamido bis[ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and oxalyl bis(benzylidenehydrazide), are disclosed. The compositions can also include a light stabilizer. The compositions can be used to manufacture insulations for wire and cable. The compositions have improved long-term heat aging and also retain their color when exposed to heat. A method of making an insulation for a conductor, such as a wire or a cable, made from a composition is also provided.Type: GrantFiled: July 22, 2010Date of Patent: May 31, 2011Assignee: Union Carbide Chemicals & Plastics Technology LLCInventors: Thomas S. Lin, Jeffrey M. Cogen
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Publication number: 20100249285Abstract: Disclosed is an elastic polyurethane yarn which can exhibit excellent heat resistance even when an unsaturated fatty acid or a heavy metal is attached to the yarn during dyeing at a high temperature, and which has high elastic recovery and high strength/elongation. Specifically disclosed is an elastic yarn comprising a polyurethane mainly composed of a polymer diol and a diisocyanate, which contains (a) a hindered phenol compound, (b) an N,N-dialkylsemicarbazide compound and (c) a nitrogenated aromatic compound, wherein the nitrogenated aromatic compound (c) is contained in an amount of 0.01 to 0.30 weight % inclusive.Type: ApplicationFiled: June 13, 2008Publication date: September 30, 2010Applicant: INVISTA North America S.a.r.I.Inventors: Toshihiro Tanaka, Masashi Hara, Tatsuaki Kanbayashi
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Publication number: 20100120954Abstract: An olefine polymer composition comprises a stabilizing amount of a metal deactivator comprising a polymeric hydrazine derivative. The deactivator is of formula (I), in which at least one of R1 and R2 comprise a polymeric radical that includes a substituted or unsubstituted aromatic radical. The olefin polymers include polyethylene and polypropylene.Type: ApplicationFiled: March 17, 2008Publication date: May 13, 2010Inventors: Pascal E.R.E.J. Lakeman, Thoi H. Ho, Ronald Wevers
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Patent number: 7691928Abstract: The present invention provides a polyester resin component having crystallization improved and including a cyclic compound shown by a below-described formula and polyester capable of having a crystal structure. (In the formula, a ring A and a ring B respectively represent benzene rings, and hydrogen bonded to the benzene rings may optionally be substituted with other groups. Y represents —CONH— or —NHCO—. X represents a heterocyclic group or a condensed heterocyclic group including one or more NH or CO respectively).Type: GrantFiled: January 29, 2004Date of Patent: April 6, 2010Assignee: Sony CorporationInventors: Noritaka Sato, Tsutomu Noguchi, Hiroyuki Mori
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Patent number: 7691929Abstract: The present invention is directed a method of flame retarding a polymeric substrate using a specific group of azo and peroxide derivatives as flame retardants, to flame retardant compositions as well as to novel azo compounds usable as flame retarding compounds.Type: GrantFiled: January 9, 2009Date of Patent: April 6, 2010Assignee: Ciba Specialty Chemicals CorporationInventors: Nicolas Ronan, Carl-Eric Magnus Wilën
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Patent number: 7662874Abstract: Rubber mixtures are disclosed comprising (A) at least one styrene-butadiene rubber, (B) at least one filler and (C) at least one polysulphidic organo(alkyl polyether silane) of the general formula I [(X)(X?)(X?)Si—RI]2—Sm??I. The mixtures are prepared by mixing at least one styrene-butadiene rubber, and at least one filler and one polysulphidic organo(alkyl polyether silane) of the formula (I). The rubber mixtures can be used for the production of mouldings.Type: GrantFiled: January 31, 2007Date of Patent: February 16, 2010Assignee: Evonik Degussa GmbHInventors: Karsten Korth, Andre Hasse, Philipp Albert, Oliver Klockmann
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Patent number: 7638565Abstract: A polyacetal resin composition comprises a polyacetal resin and a hetero atom-containing aliphatic carboxylic acid hydrazide. The proportion of the hetero atom-containing aliphatic carboxylic acid hydrazide may be about 0.001 to 20 parts by weight relative to 100 parts by weight of the polyacetal resin. The polyacetal resin composition may further comprise at least one member selected from the group consisting of an antioxidant, a heat stabilizer, a processing stabilizer, a weather (light)-resistant stabilizer, an impact resistance improver, a gloss control agent, an agent for improving sliding property, a coloring agent, and a filler. Such a resin composition improves stability of the polyacetal resin and inhibits formaldehyde emission.Type: GrantFiled: October 22, 2004Date of Patent: December 29, 2009Assignee: Polyplastics Co., Ltd.Inventor: Hatsuhiko Harashina
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Patent number: 7253237Abstract: A room temperature curable organopolysiloxane composition is provided. It includes (A): a diorganopolysiloxane containing 2 hydroxyl groups or hydrolysable groups bonded to silicon atoms within each molecule; (B): (B1) an amine compound of the general formula (2): R1NH2??(2) (wherein, R1 represents a monovalent hydrocarbon group of 12 to 30 carbon atoms), and/or an amine compound of the general formula (3): H2N—R2—NH2??(3) (wherein, R2 represents a bivalent hydrocarbon group of 4 to 30 carbon atoms), or (B2) a compound which, via a hydrolysis reaction, is capable of yielding an amine compound of (B1); (C) a cross-linking agent; and (D) a curing catalyst. The composition, following curing, generates a silicone rubber to which a coating can be easily applied, and in which that coating is not easily removed.Type: GrantFiled: October 15, 2004Date of Patent: August 7, 2007Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Isao Iwasaki, Tsuneo Kimura
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Patent number: 7241822Abstract: The invention relates to a powdery dye composition consisting essentially of C.I. Pigment Red 170 (C.I. No. 12475) and barium sulfate, wherein the barium sulfate is added before or during the production process of the C.I. Pigment Red 170. The inventive addition of barium sulfate enables non-homogeneities and caking to be avoided in the mixture.Type: GrantFiled: August 1, 2002Date of Patent: July 10, 2007Assignee: Clariant Produkte (Deutschland) GmbHInventors: Felix W. Grimm, Klaus Kund, Wolfgang Winter, Willi Rauschmann, Bernd Nestler
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Patent number: 7141076Abstract: A hydrolizable polymer-containing textile article and method for producing the same is provided that has been chemically modified by treating the article with certain branched chain amines to reduce the strength of the fibers contained therein, thus rendering the article less prone to the formation of objectionable pill balls, thereby increasing wearer comfort and retaining the desired appearance of the article, and thereby extending the useful life of the article.Type: GrantFiled: October 3, 2003Date of Patent: November 28, 2006Assignee: Milliken & CompanyInventor: William C. Kimbrell
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Patent number: 7137999Abstract: A hydrolizable polymer-containing textile article and method for producing the same is provided that has been chemically modified by treating the article with certain branched chain amines to reduce the strength of the fibers contained therein, thus rendering the article less prone to the formation of objectionable pill balls, thereby increasing wearer comfort and retaining the desired appearance of the article, and thereby extending the useful life of the article.Type: GrantFiled: October 3, 2003Date of Patent: November 21, 2006Assignee: Milliken & CompanyInventor: William C. Kimbrell
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Patent number: 7091280Abstract: The present invention relates to a binder composition containing A) at least one aqueous polyurethane-polyurea dispersion and B) at least one stabilizer containing a) at least one amine having a structural unit corresponding to formula (I) ?which has no hydrazide groups, b) at least one compound having a structural unit corresponding to formula (II) —CO—NH—NH—??(II) ?and c) optionally a stabilizing compound other than a) and b). The polyurethane dispersions are manufactured in the presence of components a) and b). It is possible for components a) and b), depending on the grade used, to be incorporated into the polymer framework as structural units.Type: GrantFiled: January 14, 2003Date of Patent: August 15, 2006Assignee: Bayer AktiengesellschaftInventors: Thorsten Rische, Karin Naujoks, Jürgen Meixner, Thomas Feller, Eberhard König
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Patent number: 6982293Abstract: An olefin type thermoplastic elastomer which satisfies the following formulae (I) to (III): Y??2X+350??(I) X<95??(II) Z?150??(III) where X, Y and Z are as follows: X: JIS A hardness of a molded product as measured in accordance with JIS K6253 (no unit); Y: rate of change in the weight of a molded product measured based on JIS K6258 using IRM903 oil at 120° C. (unit: %); and Z: number of granular structures on an extruded sheet surface (250 mm×1,500 mm) (unit: granular structures).Type: GrantFiled: June 9, 2004Date of Patent: January 3, 2006Assignee: Mitsubishi Chemical CorporationInventors: Gakuji Shin, Tatsumi Tsuji
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Publication number: 20040063830Abstract: A polypropylene composition containing the components: a) a crystallizable polypropylene homopolymer, random copolymer, alternating or segmented copolymer, block copolymer or a blend of polypropylene with another synthetic polymer, and b) 0.001 to 5% relative to the weight of component (a), of a specific trimesic acid derivative.Type: ApplicationFiled: June 3, 2003Publication date: April 1, 2004Inventors: Hans-Werner Schmidt, Paul Smith, Markus Blomenhofer
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Patent number: 6673119Abstract: A hydrolizable polymer-containing textile article and method for producing the same is provided that has been chemically modified by treating the article with certain branched chain amines to reduce the strength of the fibers contained therein, thus rendering the article less prone to the formation of objectionable pill balls, thereby increasing wearer comfort and retaining the desired appearance of the article, and thereby extending the useful life of the article.Type: GrantFiled: August 31, 2001Date of Patent: January 6, 2004Assignee: Milliken & CompanyInventor: William C. Kimbrell
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Publication number: 20030229172Abstract: Aqueous dispersions comprising microfine metal oxide particles and dispersion auxiliaries, wherein, as dispersion auxiliaries, at least one of the compounds of the general formula (I) 1Type: ApplicationFiled: June 6, 2003Publication date: December 11, 2003Applicants: Goldschmidt AG, Degussa AGInventors: Christoph Batz-Sohn, Petra Brandt, Thomas Dietz, Steffen Hasenzahl, Klaus Jenni, Kathrin Lehmann, Ralf Mathiak, Angela Ruttgerodt
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Patent number: 6660795Abstract: The invention provides polymeric PTC compositions and electrical PTC devices with higher voltage capability and improved electrical stability. The PTC compositions include at a minimum an organic polymer and a conductive filler including carbon black having an iodine adsorption of less than about 60 mg/g carbon and a dibutyl phthalate absorption of greater than about 115 cc/100 g. Depending on device design, the composition can be used in low to high voltage applications.Type: GrantFiled: March 13, 2001Date of Patent: December 9, 2003Assignee: Therm-O-Disc, IncorporatedInventor: Edward J. Blok
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Publication number: 20030134947Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.Type: ApplicationFiled: November 25, 2002Publication date: July 17, 2003Applicant: BRIDGESTONE CORPORATION, OTSUKA CHEMICAL CO., LTD.Inventors: Daisuke Nohara, Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda
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Patent number: 6559264Abstract: The present invention relates to blocked polyisocyanate crosslinking agents, to the production thereof and to the use thereof in single-component stoving lacquers, particularly OEM clear lacquers (original equipment material, initial lacquer coating).Type: GrantFiled: August 2, 2001Date of Patent: May 6, 2003Assignee: Bayer AktiengesellschaftInventors: Eberhard König, Hans-Ulrich Meier-Westhues, Thomas Klimmasch
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Patent number: 6531527Abstract: A production process for a viscosity-stabilizer-containing natural rubber comprising a step of adding a viscosity stabilizer liquid diluted with a solvent to a natural rubber, and a viscosity-stabilizer-containing natural rubber latex to which added is a viscosity stabilizer dissolved in an aliphatic chain compound, and a viscosity-stabilizer-containing natural rubber obtained by adding a viscosity stabilizer liquid diluted with a solvent to a natural rubber after it was coagulated.Type: GrantFiled: June 15, 2001Date of Patent: March 11, 2003Assignee: Bridgestone CorporationInventors: Hirotoshi Toratani, Ken Kijima, Takatsugu Hashimoto
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Patent number: 6518339Abstract: An additive that is used in conjunction with certain dibenzylidene sorbitol-type (DBS) clarifiers and acid scavengers within polyolefin resins to reduce the release of aldehydes from polypropylene material is disclosed. Hydrazides have been shown to be effective at removing residual aldehyde from polyolefins, such as polypropylene. This function can be accomplished with a minimal impact on optical transparent properties imparted to the polypropylene by the clarifying agent. The net effect is an improvement in the organoleptic performance of resins containing clarifiers, and a reduction in the UV-absorbing extractables. Particularly, adipic dihydrazide, when co-compounded into polypropylene homopolymer with 4-methyl DBS, improves the organoleptic performance of the clarifier. Incorporation of dihydrazides into polypropylene pellets reduced air-released aldehyde by nearly 100%.Type: GrantFiled: September 18, 2000Date of Patent: February 11, 2003Assignee: Milliken & CompanyInventors: Shawn R. Sheppard, John G. Lever
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Patent number: 6515055Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.Type: GrantFiled: November 17, 2000Date of Patent: February 4, 2003Assignees: Bridgestone Corporation, Otsuka Chemical Co., Ltd.Inventors: Daisuke Nohara, Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda
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Publication number: 20020177641Abstract: This invention relates to a rubber composition and a method of manufacturing the same, and particularly to a technique of improving a fracture resistance in a silica-containing rubber composition by improving dispersion of the silica.Type: ApplicationFiled: March 2, 2000Publication date: November 28, 2002Inventors: Naofumi Ezawa, Hideki Komatsu
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Patent number: 6455618Abstract: Described is a thermoplastic molding composition comprising: a) 0.05 to 1.5 wt. %, with respect to the entire molding composition, of a fatty acid amide ester wax; b) 0.5 to 10 wt. %, with respect to the entire molding composition, of a silica selected from natural silica, synthetic silica and mixtures thereof; c) 0 to 1 wt. %, with respect to the entire molding composition, of a montan wax; and d) at least one thermoplastic elastomer. Also described are a method of preparing the thermoplastic molding composition, and methods of preparing articles from the thermoplastic molding composition.Type: GrantFiled: June 7, 2001Date of Patent: September 24, 2002Assignee: Wolff Walsrode AGInventors: Ralf Schledjewski, Hans-Werner Funk, Dirk Schultze, Rainer Brandt
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Patent number: 6387994Abstract: A new class of solid solvents selected from adipamides, bisacetamides, biscarbamates, and dibenzamides has been found effective to reduce the melt viscosity of certain block copolymers while not substantially adversely affecting the mechanical properties of the block copolymer when both block copolymer and solid solvent are below their melt temperature. The block copolymers can be polyether-polyurethane block copolymers, polyester-polyurethane block copolymers, polyester-polyether block copolymers, polyamide polyether, or polyamide polyester. The combination is especially useful as an adhesive, as the adhesive component for fabric laminates or as the adhesive for seam sealing tapes.Type: GrantFiled: November 4, 1999Date of Patent: May 14, 2002Assignee: W. L. Gore & Associates, Inc.Inventors: Scott Gore, Holly Blake
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Patent number: 6380288Abstract: A rubber composition prepared by compounding 0.05 to 20 parts by weight of at least one selected from substituted hydrazide compounds represented by the following Formulas (I) to (IV) per 100 parts by weight of a rubber component comprising at least one rubber selected from the group consisting of natural rubber and synthetic rubber, and a pneumatic tire using the same: wherein A represents one selected from the group consisting of an aromatic group which may have a substituent, a hydantoin ring which may have a substituent, and a saturated or unsaturated linear hydrocarbon having 1 to 18 carbon atoms; Y represents hydrogen, an amino group, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group, an alkenyl group, an aromatic group, a pyridyl group or hydrazino group; and R1 to R11 each represent hydrogen, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group or an aromatic group.Type: GrantFiled: July 17, 2000Date of Patent: April 30, 2002Assignees: Bridgestone Corporation, Otsuka Chemical Co., Ltd.Inventors: Masahiro Hojo, Tomohiro Kusano, Akihiko Matsue, Kenichi Sugimoto, Shigeki Kamo, Yoshihisa Tomotaki, Akinori Oka, Ken Hirayama
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Patent number: 6242515Abstract: The present invention relates to the use of compositions comprising at least one aqueous polymer dispersion wherein the polymer has carbonyl or oxirane groups (component a)) and at least one compound with at least two NH2 groups per molecule as sealing or coating compositions, especially for substrates with a hydrophobic surface. The present invention further relates to coating compositions containing such binder formulations.Type: GrantFiled: July 26, 1999Date of Patent: June 5, 2001Assignee: BASF AktiengesellschaftInventors: Cheng-Le Zhao, Eckehardt Wistuba, Joachim Roser, Paul Fitzgerald, Jan Spitzer
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Patent number: 6235822Abstract: Gaskets comprising either at least one homogeneously branched ethylene polymer or at least one elastic substantially linear ethylene polymer, at least one ethylene/carboxylic acid interpolymer; and at least one slip agent are disclosed. These gaskets may also contain enhanced polyethylenes produced by the direct polymerization of various combinations of novel elastic substantially linear olefin polymers in multiple reactors using either single or multiple catalysts. These gaskets may also be comprised of at least one ethylene polymer and at least one ionomer. The above mentioned gaskets may also contain slip agents and/or foaming agents. The gaskets are particularly useful for sealing food and liquid containers and do not contribute to taste and/or odor of the packaged product, which is especially useful in food-stuff applications.Type: GrantFiled: July 26, 1999Date of Patent: May 22, 2001Assignee: The Dow Chemical CompanyInventors: Alan R. Whetten, Ronald P. Markovich, Steve M. Hoenig, Edward E. Greene
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Patent number: 6177483Abstract: A composition and uses of said composition are described for a latex based setting system for remedial and other operations within a wit bore. The composition comprises a pH-reducing agent and/or a coagulant. By controlling the amount of agent, the setting time of the system can be controlled in a range of 0.5 h to 15 h.Type: GrantFiled: May 25, 1999Date of Patent: January 23, 2001Assignee: Schlumberger Technology CorporationInventors: Mostafa A Tehrani, Stephen N Davies, Geoffrey C Maitland
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Patent number: 6172157Abstract: A rubber composition prepared by blending 15 to 85 parts by weight of silica per 100 parts by weight of a rubber component comprising natural rubber and/or diene base synthetic rubber and 1 to 15% by weight of a dispersion-improving agent based on the amount of the silica described above. Further, a rubber composition prepared by blending 20 to 60 parts by weight of silica and 30 to 80 parts by weight of carbon black having a cetyl trimethylammonium bromide-adsorbing amount (CTAB) of 120 m2/g or more and a dibutyl phthalate-absorbing amount (DBP) of 120 ml/100 g or more per 100 parts by weight of a rubber component comprising natural rubber and/or diene base synthetic rubber, and 3 to 15% by weight of a dispersion-improving agent based on the amount of the silica described above, wherein the total amount of silica and carbon black is 50 to 120 parts by weight. A specific nitrogen-containing carbonyl compound or silicone oil is used as a dispersion-improving agent.Type: GrantFiled: February 19, 1998Date of Patent: January 9, 2001Assignee: Bridgestone CorporationInventors: Shunji Araki, Kazuhiro Yanagisawa
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Patent number: 5710200Abstract: Natural rubber containing viscosity stabilizers is treated under drying conditions to result in 10% or less of the difference of gel content and 85% or more of molecular weight retention between before and after drying, and methods for manufacturing natural rubber comprise treating under drying conditions to result in 10% or less of the difference of gel content and 85% or more of molecular weight retention between before and after drying.Natural rubber containing viscosity stabilizers is treated with a strainer, and methods for manufacturing natural rubber comprise treating with a strainer after compounding hydrazide stearate into the natural rubber.Gelation (storage hardening) is suppressed and a decrease in molecular weight is prevented.Type: GrantFiled: September 1, 1995Date of Patent: January 20, 1998Assignee: Bridgestone CorporationInventors: Hirotoshi Toratani, Eiji Nakamura, Hideki Aoyama, Yasushi Hirata
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Patent number: 5705549Abstract: A rubber composition comprises a particular copolymer containing isobutylene unit, a paramethylstyrene unit and a parabromomethylstyrene unit; natural rubber and/or diene synthetic rubber; carbon black; and at least one hydrazide compound, and has a low value of tan .delta. at 60.degree. C. with maintaining tan .delta. at 0.degree. C. at a high level.Type: GrantFiled: April 15, 1996Date of Patent: January 6, 1998Assignee: Bridgestone CorporationInventor: Masahiro Hojo
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Patent number: 5703154Abstract: A premolded EPDM pipe flashing composition comprises 100 parts by weight of an elastomeric polymer comprising from about 70 to 95 parts by weight of at least one amorphous ethylene-propylene-diene terpolymer and from 5 to about 30 parts by weight of at least one crystalline or semi-crystalline ethylene-propylene-diene terpolymer; from about 35 to 175 parts by weight of a filler selected from the group consisting of reinforcing and non-reinforcing materials and mixtures thereof, per 100 parts of the polymer; from about 30 to 110 parts by weight of a processing material and mixtures thereof, per 100 parts of the polymer; and from about 0.6 to 7.5 parts by weight of a cure package, per 100 parts of the polymer, the cure package comprising from about 0.1 to 1.5 parts by weight sulfur and from 0.5 to 6 parts by weight of at least one sulfur vulcanizing accelerator.Type: GrantFiled: July 11, 1996Date of Patent: December 30, 1997Assignee: Bridgestone/Firestone, Inc.Inventors: James A. Davis, William A. Wasitis, William F. Barham
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Patent number: 5574084Abstract: Modifiers for ethylene copolymers for use in hot melt adhesives are provided, particularly modifiers for ethylene vinyl acetate-based adhesives which improve adhesive properties are provided. Blends comprising ethylene copolymers, modifiers and tackifiers and applications thereof are also provided for.Type: GrantFiled: November 14, 1994Date of Patent: November 12, 1996Assignee: Exxon Chemical Patents, Inc.Inventor: Andrew J. Peacock
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Patent number: 5534569Abstract: Heat generation of a rubber composition can be lowered by incorporating to the composition a compound of the formula, (I), (II) or (III), ##STR1## where A is an aromatic group, hydantoin ring or C.sub.0-18 straight chain hydrocarbon group, B is an aromatic group, X is hydroxy or amino, Y is pyridyl or hydrozino.Type: GrantFiled: March 8, 1995Date of Patent: July 9, 1996Assignee: Bridgestone CorporationInventor: Akiko Etoh
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Patent number: 5484827Abstract: The invention provides UV-stabilizer concentrates, which, relative to the total weight, consist ofA) 40 to 80 weight-% of at least one thermoplastic polyurethaneB) 10 to 30 weight-% 1,3,5-tri-glycidyl-isocyanurate andC) 10 to 30 weight-% 2-(2-hydroxy-3,5,-di-tert-amyl-phenyl)-2H-benzotriazole and/or 1,6-hexane-di-yl-bis-(3-(3-benzotriazole-N-yl)-4-hydroxy-5-tert-butyl)-phe nyl-propanoate.The invention also discloses a process for their production, and their utilization to stabilize TPU against UV- and thermal-degradation.Type: GrantFiled: September 30, 1994Date of Patent: January 16, 1996Assignee: BASF Elastogran GmbHInventors: Frank Prissok, Friedhelm Lehrich, Gerhard Lehr, Aleksander Glinka, Douglas J. Harrop
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Patent number: 5474522Abstract: The present invention provides an article, comprising: a fabric sheet; a curable resin coated onto the fabric sheet; and a plurality of microfiber fillers dispersed into the resin. The incorporation of microfiber fillers into the casting materials of the present invention adds substantially to the strength of the cured casting material, particularly when the fabric used therein is a non-fiberglass fabric, while not detracting from the handling properties of the uncured casting tape or bandage.The microfiber fillers useful in this invention are generally characterized as being short fibers having an aspect ratio greater than five to one. Blends of microfibers having different aspect ratios may be utilized in the casting tapes of the present invention. Preferred microfiber fillers or blends have an aspect ratio between 5:1 and 200:1, more preferably, the aspect ratio of the microfiber is between 5:1 and 50:1, and most preferably, the aspect ratio of the microfiber is between 10:1 and 30:1.Type: GrantFiled: May 24, 1994Date of Patent: December 12, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Matthew T. Scholz, Worku A. Mindaye
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Patent number: 5424009Abstract: Catalytically inert, crosslinked polymeric films adapted to be activated to catalyze electroless deposition of metal by application of heat are formed from solutions of hydroxy-functionalized polymer, preferred polymers include hydroxy-reactive crosslinking agent and a Group 8 metal compound. Preferred crosslinking agents are block isocyanates and methylated melamines.Type: GrantFiled: May 24, 1994Date of Patent: June 13, 1995Assignee: Monsanto CompanyInventor: Jawed Asrar