Acyl Group Of The Carboxylic Acid Has At Least Fifteen Carbon Atoms, E.g., Butyl Stearate, Etc. Patents (Class 524/318)
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Publication number: 20020013396Abstract: Compositions and methods for plasticizing polyvinyl chloride polymers where the plasticizers contain fatty acids derived from vegetable oils and the fatty acids are substantially fully esterified with an alcohol (monool or polyol), the fatty acids having unsaturated bonds that are substantially fully epoxidized, and wherein the fatty acids are added substantially randomly to one or more hydroxyl sites on the alcohol. The plasticizers may be added in amounts between about 10 to 230 pph of PVC resin.Type: ApplicationFiled: May 4, 2001Publication date: January 31, 2002Applicant: Battelle Memorial InstituteInventors: Herman P. Benecke, Bhima R. Vijaydendran, Joel D. Elhard
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Patent number: 6342552Abstract: The present invention provides silica-filled, vulcanized elastomeric compounds comprising an elastomer mixed with at least a silica filler, a processing aid, and a curing agent, and processes for the preparation of the same. Generally, the present invention provides processing aids which effectively reduce or replace the amount (i.e., about 10 percent by weight based upon the silica filler) of the processing aid bis[3-triethyoxysilyl)propyl]tetrasulfide (“Si69”) used in the production of silica-filled rubber stocks. These new processing aids include alkyl alkoxysilanes, fatty acid esters of hydrogenated and non-hydrogenated sugars and the polyoxyethylene derivatives thereof, and combinations thereof, with or without various non-reinforcing fillers such as mineral fillers. The processing aids do not hinder the physical properties of the compounds and have been found to be excellent substitutes for Si69.Type: GrantFiled: November 28, 2000Date of Patent: January 29, 2002Assignee: Bridgestone CorporationInventors: William L. Hergenrother, Ashley S. Hilton, William M. Cole, James Oziomek
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Publication number: 20010044486Abstract: Monoesters of fatty acids containing at least 12 carbon atoms may replace a considerable percentage of conventional plasticizers based on phthalic acid esters, alkyl sulfonic acid esters of phenol or other known plasticizers in plastisol compositions. The methyl and/or ethyl esters of fatty acids of renewable fats and oils, such as tall oil fatty acids, rapeseed oil fatty acids, linseed oil fatty acids or safflower oil fatty acids, are preferably used for these secondary plasticizers. These plastisols are preferably used as adhesives, sealing materials or coatings in automobile construction.Type: ApplicationFiled: May 15, 2001Publication date: November 22, 2001Inventor: Karl Wesch
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Patent number: 6312804Abstract: A process of producing a vinyl chloride fiber with a small fineness having seven-tenth to half of the full luster surface and feel remarkably similar to human hair is provided. The process provides the vinyl chloride fiber comprising a vinyl chloride resin composition obtained by formulating (a) 1-35 parts by weight of ethylene-vinyl acetate resin, (b) 0.2-5.0 parts by weight of thermal stabilizer, and (c) 0.2-5.0 parts by weight of lubricant to 100 parts of a vinyl chloride mixture consisting of 100-60% by weight of a vinyl chloride resin and 0-40% by weight of chlorinated vinyl chloride resin. The process also provides the vinyl chloride fiber obtained by melt spinning the resin composition described above. The vinyl chloride fiber is useful for an artificial hair fiber for the decoration of hair or a doll's hair fiber such as a doll hair.Type: GrantFiled: November 6, 1998Date of Patent: November 6, 2001Assignee: Kaneka CorporationInventors: Kazumasa Yamane, Hiroshi Yokoyama, Yuji Kubo, Ikuo Okino
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Patent number: 6291564Abstract: An aqueous coating composition is provided which includes crosslinkable film-forming resin and about 0.01 to about 25 weight percent on a basis of total resin solids of an amphiphilic adjuvant having an acid value of less than 30, a water-soluble polar end including at least one terminal hydroxyl group and a water-insoluble hydrocarbon end including at least seven contiguous carbon atoms. The coating composition is useful as a monocoat or primer, basecoat or clearcoat in a multi-component composite coating composition for automotive applications.Type: GrantFiled: February 16, 1999Date of Patent: September 18, 2001Assignee: PPG Industries Ohio, Inc.Inventors: Dennis L. Faler, Djurdjica Glas, Hans-Dieter Hille, Michael Jäger, Walter Metzger, Kurt G. Olson, Edward S. Pagac, Daniel E. Rardon, Shanti Swarup
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Publication number: 20010021733Abstract: The invention relates to a new process for preparing polymer dispersions. According to the invention, a mixture is first formed of a polymer component, a plasticizer, dispersion auxiliaries and water, the mixture is then heated to approximately 20 to 100° C. in order to form a paste-like composition, and the paste-like composition is dispersed in water. The dispersion obtained according to the invention can be used for coating paper or board, as a primer, as a component in adhesives, paint or lacquer, and it is also suited for the manufacture of cast films and for use as a binder in materials based on cellulosic fibers.Type: ApplicationFiled: May 2, 2001Publication date: September 13, 2001Applicant: Valtion teknillinen tutkimuskeskusInventors: Soili Peltonen, Maija Elina Heikkila, Hannu Mikkonen, Jouni Hamara
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Patent number: 6271301Abstract: Thermoplastic elastomers including a polyvinyl chloride and a nitrile rubber additive are disclosed. The nitrile rubber additive can be crosslinked and/or essentially free of plasticizer. The thermoplastic elastomers can include additional materials, such a copolyester and/or a plasticizer. The thermoplastic elastomers can be soft, elastomeric and/or oil resistant. The thermoplastic elastomers can have good low temperature properties. The thermoplastic elastomers can have good flame retardant, smoke suppressant and/or char forming properties.Type: GrantFiled: June 22, 1998Date of Patent: August 7, 2001Assignee: Teknor Apex CompanyInventors: Dexi Weng, John C. Andries, Keith G. Saunders
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Publication number: 20010009940Abstract: A processable rubber stock is produced by the preparation of a silica-filled, vulcanized elastomeric compound comprising mixing an elastomer with an amorphous silica filler, a processing aid comprising fatty acid ester of a polyol, optionally an additional mineral filler, and a cure agent. The elastomer is preferably a diene monomer homopolymer or a copolymer of at least one diene and at least one monovinyl aromatic monomer. By effecting vulcanization, a vulcanized elastomeric compound is produced containing good physical properties for use as tread stock for a pneumatic tire.Type: ApplicationFiled: July 11, 1997Publication date: July 26, 2001Inventors: WILLIAM L. HERGENROTHER, WILLIAM M. COLE
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Patent number: 6228915Abstract: The invention relates to compositions and methods for reducing food deposit adhesion to cookware. More specifically this invention relates to a resin composition having a glass transition temperature of at least 180° C. containing an amount of at least one additive selected from fatty acid esters, fatty acid amide, anionic surfactant, or a mixture containing at least one of the foregoing to reduce food deposit adhesion on cookware made from the composition. The invention also relates to a method for providing plastic cookware having reduced food deposit adhesion.Type: GrantFiled: April 15, 1999Date of Patent: May 8, 2001Assignee: General Electric CompanyInventors: Cornelis Johannes Lensvelt, Jan Paul Penning, Robert Puyenbroek
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Patent number: 6225424Abstract: This invention aims at providing a polyethylene resin suitably used as a material of the container for a high purity chemical, which permits substantially no transference of fine particles and dissolution of metals into the chemical being minimized. This object is acheived by using a polyethylene resin having (1) to (5) properties described below as a material of the container for a high purity chemical: (1) a density of 0.94-0.97 g/cm3; (2) a melt flow rate under a load of 21.6 Kg at 190° C. of 2-50 g/10 minutes; (3) a ratio (Mw/Mn) of average molecular weight in weight (Mw) against average molecular weight in number (Mn) determined by gel permeation chromatography (GPC) of 8-15; (4) an extractable matter by boiling normal hexane of 0.1 weight % or less; and (5) a chlorine content of 15PPM or less with respect to the weight of polyethylene resin.Type: GrantFiled: September 2, 1998Date of Patent: May 1, 2001Assignee: Tosoh CorporationInventors: Hiroaki Nishikawa, Tatsuhiko Ogusu
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Patent number: 6221943Abstract: A processable rubber stock is produced by the preparation of a silica-filled, vulcanized elastomeric compound comprising mixing an elastomer with an amorphous silica filler, from 0 to less than about 1% by weight based on said silica filler of bis[3-(triethoxysily)propyl]tetrasulfide, an alkylalkoxysilane and a cure agent. A further processing aid comprising at least one of an ester of a fatty acid or an ester of a polyol is preferred. The elastomer is preferably a diene monomer homopolymer or a copolymer of at least one diene and at least one monovinyl aromatic monomer. By effecting vulcanization, a vulcanized elastomeric compound is produced containing good physical properties for use as tread stock for a pneumatic tire.Type: GrantFiled: July 11, 1997Date of Patent: April 24, 2001Assignee: Bridgestone CorporationInventors: William L. Hergenrother, Ashley S. Hilton, William M. Cole
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Olefin polymer composition having low smoke generation and fiber, film and fabric prepared therefrom
Patent number: 6172153Abstract: A polymer composition and fiber, film and fabric prepared therefrom. The composition contains (i) an acid neutralizing agent other than a metallic salt of a saturated or unsaturated fatty acid, (ii) a processing aid comprising a metallic salt of a saturated or unsaturated fatty acid, the metallic salt of a saturated or unsaturated being present in a maximum amount of 200 ppm, a stabilizer system containing (a) a phosphite selected from the group consisting of 2,2′,2″-nitrilo[triethyl-tris(3,3′,5,5′-tetra-tert.butyl-1, 1-biphenyl-2,2′-diyl)phosphite] and tris(2,4-di-tert-butylphenyl) phosphite; and (b) a N,N-dialkylhydroxylamine. Also disclosed is a method for preparing a polyolefin fiber, film or fabric which includes (A) incorporating the above additives into an olefin polymer, thereby producing a stabilized polyolefin polymer; and (B) extruding the stabilized olefin polymer through a die, thereby producing a olefin polymer fiber or film.Type: GrantFiled: June 12, 1998Date of Patent: January 9, 2001Assignee: Montell North America Inc.Inventor: Michael E. Starsinic -
Patent number: 6159614Abstract: A polypropylene resin composition is herein disclosed which is obtainable by blending (A) 100 parts by weight of a polypropylene resin comprising (a) 100 to 20% by weight of a homopolymer of propylene and/or a propylene copolymer containing 4% by weight or less of another olefin unit in which in a pentad fraction by .sup.13 C-NMR, [rrrr/(1-mmmm)].times.100 is in the range of 20 to 60%, a Tm measured by a DSC is 150.degree. C. or more, and a melt enthalpy is 100 J/g or less, and (b) 0 to 80% by weight of a propylene copolymer containing 10 to 80% by weight of an olefin unit other than propylene, with (B.) 0.01 to 5 parts by weight of an octyltin salt of a fatty acid, an alkylenebisfatty acid amide, a fatty acid ester of a polyvalent alcohol, or a metal salt of an aliphatic monocarboxylic acid.Type: GrantFiled: June 1, 1999Date of Patent: December 12, 2000Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Yutaka Azuma, Satoshi Tamura, Tsunenosuke Hiramatsu, Keigo Umemoto, Toshio Kano, Masamichi Kondo
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Patent number: 6136888Abstract: This invention describes the use of higher fatty acid methyl esters, i.e. of methyl monoesters of fatty acids having a carbon chain of 12 C atoms or more, for example of rapeseed oil methyl ester, as solvent for the individual or both components of polyurethane binders for molding materials used in foundry technology, the components of which comprise a phenolic resin which contains free OH groups and a polyisocyanate as a reaction participant. The fatty acid methyl esters can be the sole solvent. However, they also can be used, at least for the polyisocyanate, together with a high boiling aromatic hydrocarbon, whereby the amount of the fatty acid methyl ester should exceed the amount of the hydrocarbon, and they can be used, at least for the phenolic resin, together with a solvent of higher polarity.The use of fatty acid methyl esters entails considerable benefits.Type: GrantFiled: October 31, 1996Date of Patent: October 24, 2000Assignee: Huttenes-Albertus Chemische Werke GmbHInventors: Marek Torbus, Gerad Phillippe Ladegourdie
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Patent number: 6130278Abstract: A fine cell-containing polyester film of the present invention comprises 70 to 97% by weight of a polyester and 3 to 30% by weight of a thermoplastic resin immiscible with polyester and produced by stretching at least one direction, the difference in gloss between opposite surfaces of said polyester film being not less than 3%, and a gloss of one surface of said polyester film being not less than 25%. Such a fine cell-containing polyester film is excellent in gloss, printability, transport property and/or flexibility.Type: GrantFiled: August 11, 1998Date of Patent: October 10, 2000Assignee: Mitsubishi Polyster Film CorporationInventors: Takashi Hibiya, Takatoshi Miki
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Patent number: 6063845Abstract: A composition for an electric cable is described. The composition is characterized in that it comprises an ethylene plastic and a compound of the general formula (I) ##STR1## where n.gtoreq.1,R.sup.1, R.sup.2 and R.sup.3, which are the same or different, designate hydrogen or the residue of a carboxylic acid with 8-24 carbon atoms,with the proviso that there are at least two free OH groups and at least one residue of a carboxylic acid with 8-24 carbon atoms in the molecule. Preferably, n=3-12 and R.sup.1, R.sup.2 and R.sup.3 designate hydrogen or stearoyl and the compound of formula (I) is present in an amount of 0.05-2% by weight of the composition. The compound of formula (I) may be combined with other additives, such as polyethylene glycols. The composition may be used as an insulating layer or a semiconductive layer in an electric cable.Type: GrantFiled: July 7, 1998Date of Patent: May 16, 2000Assignee: Borealis A/SInventor: Perry Nylander
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Patent number: 6057392Abstract: A method is disclosed for processing a rubber composition comprising thermomechanically mixing the rubber composition while maintaining a rubber temperature in a range of from 160.degree. C. to 190.degree. C. for a period of time ranging from 4 to 8 minutes, wherein said rubber composition is characterized by(i) 100 parts by weight of at least one sulfur vulcanizable elastomer containing olefinic unsaturation;(ii) 10 to 250 phr of a filler selected from the group consisting of silica, carbon black and mixtures thereof; and(iii) 0.5 to 50 phr of an ester of the formula: ##STR1## wherein R.sup.1 is selected from the group consisting of alkyls having from 16 to 18 carbon atoms and alkenyls and alkadienyls having from 16 to 18 carbon atoms; and R.sup.2 is selected from the group consisting of alkyls having from 12 to 22 carbon atoms.Type: GrantFiled: February 17, 1998Date of Patent: May 2, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Lawson Gibson Wideman, Paul Harry Sandstrom
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Patent number: 6046260Abstract: A zinc oxide dispersion for use in rubber compounds having at least 40, preferably 74-92, weight percent zinc oxide powder and at least five weight percent of a binder selected from the group consisting of asphalt and terpene tackifiers. The dispersion also preferably includes at least 0.5 weight percent stearifying agent such as stearic acid.Type: GrantFiled: January 13, 1998Date of Patent: April 4, 2000Assignee: Flow Polymers, Inc.Inventor: James W. Hoover
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Patent number: 6025075Abstract: A thermoplastic resin containing a flame-retarding magnesium hydroxide has its workability enhanced by a sorbitan ester in admixture with the resin and flame retardant. An admixture of the resin, magnesium hydroxide, and ester may be either a mixture of discrete particles of each of said components of the composition or a mixture of the resin and a magnesium hydroxide powder whose particles have a coating of the ester.Type: GrantFiled: June 23, 1997Date of Patent: February 15, 2000Assignee: Morton International, Inc.Inventors: Lawrence P. Grant, Susan Crooks
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Patent number: 6022924Abstract: A color masterbatch resin composition for a packaging material for a photographic photosensitive material which does not adversely affect photographic properties of the photographic photosensitive material, comprising a light-shielding material in a concentration thrice as much as or more that of the packaging material for a photographic photosensitive material, and a thermoplastic resin of which 50 wt. % or more is the same type as a thermoplastic resin occupying 50 wt. % or more of the total thermoplastic resin composing the packaging material for a photographic photosensitive material, production thereof, a packaging material for a photographic photosensitive material formed of a color masterbatch resin composition, and production thereof.Type: GrantFiled: July 10, 1998Date of Patent: February 8, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Mutsuo Akao, Koji Inoue
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Patent number: 6011115Abstract: A thermoplastic resin composition comprising 50 to 85 parts by weight of an ethylene-vinyl alcohol copolymer, 10 to 40 parts by weight of an ionomer of ethylene-unsaturated carboxylic acid copolymer containing about 5 to 12 mole % of unsaturated carboxylic acid, and 1 to 25 parts by weight of a polyamide and a packaging material comprising said resin composition are provided. The resin composition is excellent in gas barrier property, impact resistance, pinhole resistance, stretchability, drawability and transparency and is preferably used for packaging material.Type: GrantFiled: September 2, 1997Date of Patent: January 4, 2000Assignee: DuPont-Mitsui Polychemicals Co. Ltd.Inventors: Kenji Miharu, Hitoshi Tachino
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Patent number: 6011086Abstract: A thermoplastic resin containing a flame-retarding magnesium hydroxide has its workability enhanced by a sorbitan ester in admixture with the resin and flame retardant. An admixture of the resin, magnesium hydroxide, and ester may be either a mixture of discrete particles of each of said components of the composition or a mixture of the resin and a magnesium hydroxide powder whose particles have a coating of the ester.Type: GrantFiled: March 27, 1997Date of Patent: January 4, 2000Assignee: Morton International, Inc.Inventors: Lawrence P. Grant, Susan Crooks, Robert P. Edmonston
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Patent number: 5977223Abstract: A method of manufacturing a thin-walled polyurethane article includes dipping a shaped former into a coagulant solution and subsequently dipping the shaped former into an aqueous-phase polyurethane/plasticizer dispersion wherein the unplasticized polyurethane has a mean particle size of between about 0.5 .mu.m and 1.0 .mu.m and wherein the plasticizer causes the polyurethane particles to swell until they have a mean particle size of between about 1.5 .mu.m and 3.0 .mu.m. Articles so produced have a thickness of between 0.03 mm to 1.0 mm, a tensile strength of between 17 MPa and 60 Mpa and an elongation at break of greater than 650%.Type: GrantFiled: December 12, 1997Date of Patent: November 2, 1999Assignee: Ansell Healthcare Products, Inc.Inventors: Allison Marie Ryan, Jeffery G. Nile, Stanley J. Gromelski, Steven Thomas Hardwick, Richard Milner, Paul Cacioli
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Patent number: 5955524Abstract: A polypropylene resin composition is herein disclosed which is obtainable by blending (A) 100 parts by weight of a polypropylene resin comprising (a) 100 to 20% by weight of a homopolymer of propylene and/or a propylene copolymer containing 4% by weight or less of another olefin unit in which in a pentad fraction by .sup.13 C-NMR, ?rrrr/(1-mmmm)!.times.100 is in the range of 20 to 60%, a Tm measured by a DSC is 150.degree. C. or more, and a melt enthalpy is 100 J/g or less, and (b) 0 to 80% by weight of a propylene copolymer containing 10 to 80% by weight of an olefin unit other than propylene, with (B) 0.01 to 5 parts by weight of an octyltin salt of a fatty acid, an alkylenebisfatty acid amide, a fatty acid ester of a polyvalent alcohol, or a metal salt of an aliphatic monocarboxylic acid.Type: GrantFiled: May 22, 1996Date of Patent: September 21, 1999Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Yutaka Azuma, Satoshi Tamura, Tsunenosuke Hiramatsu, Keigo Umemoto, Toshio Kano, Masamichi Kondo
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Polyolefin-based composition and process for the manufacture of shaped objects from this composition
Patent number: 5948846Abstract: A composition which is polyolefin-based includes polyolefin; from 0.1 to 5 parts by weight of lubricating agent per 100 parts by weight of the polyolefin; and from 0.05 to 2 parts by weight of zeolite per 100 parts by weight of the polyolefin, which zeolite is a crystalline aluminosilicate having a water adsorptivity not exceeding 10% of its weight, at 25.degree. C. and at a water vapor partial pressure of 4.6 torr, and having an Si/Al molar ratio in the crystal lattice of at least 35.Type: GrantFiled: December 20, 1996Date of Patent: September 7, 1999Assignee: Solvay (Societe Anonyme)Inventors: Daniel Libert, Alain Wyart -
Patent number: 5942176Abstract: Synthtic fibers can be effectively lubricated by applying a lubricant containing polyether polyester block copolymer shown as follows: ##STR1## where X, Z, A.sup.1, Y.sup.1, and R.sup.1 are each of a specified structure and integers a, b, c, p and q satisfy certain conditions.Type: GrantFiled: December 22, 1997Date of Patent: August 24, 1999Assignee: Takemoto Yushi Kabushiki KaishaInventors: Tsukasa Fujii, Michiharu Nagai, Yukio Komatsu, Yasushi Maeshima
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Patent number: 5942566Abstract: A ceramic or metal feedstock composition useful for manufacture of prototype elements using a filament or ribbon deposition apparatus, includes a ceramic or metal powder, a binder of ethylene/acrylate copolymer or homopolymer, a wax and liquid plasticizer mixed together in the form of a ribbon or rod which may then be used in a prototyping device.Type: GrantFiled: July 3, 1997Date of Patent: August 24, 1999Assignee: Advanced Ceramics Research, Inc.Inventors: John L. Lombardi, Gregory E. Hilmas, Dragan Popovich
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Patent number: 5936018Abstract: A thermoplastic molding composition comprising a thermoplastic polyurethane and a wax mixture is disclosed. The polyurethane is a product of an organic diisocyanate, a linear, hydroxyl-terminated polyol and a diol or diamine chain extender. The wax mixture contains a first mixture of an ester of a C.sub.10-45 aliphatic carboxylic acid and a diol, and an alkali metal or alkaline earth metal salt of a C.sub.10-45 aliphatic carboxylic acids, and at least one member selected from the group consisting of fatty acid ester, fatty acid amide, fatty acid ester amide and polyethylene wax.Type: GrantFiled: November 19, 1997Date of Patent: August 10, 1999Assignee: Bayer AktiengesellschaftInventors: Friedemann Muller, Wolfgang Brauer, Herbert Heidingsfeld, Hans-Georg Hoppe, Willi Meister, Jurgen Winkler, Karl-Heinz Wolf, Hans-Georg Wussow
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Patent number: 5929147Abstract: An embrittlement-resistant polyolefin composition, including: (a) at least 80% by weight, based on the total weight of the polyolefin composition, of a crystalline polymer comprising either a propylene homopolymer having an isotactic index greater than 90 or a random copolymer of propylene and either ethylene or C.sub.4 -C.sub.10 1-olefins, (b) an elastomeric copolymer of ethylene and either propylene or butene-1, where the elastomeric copolymer is present in an amount sufficient to enhance the flexibility of the polyolefin composition, without adversely affecting the clarity of the polyolefin composition, and where the polyolefin composition has a heat distortion temperature of at least 60.degree. C. Optional components include a stabilizing amount of a hindered amine light stabilizer, an acid neutralizing agent, and a sorbitol-based compound. The composition may be used to manufacture medical articles and food packaging material which must be sterilized, either by irradiation or by autoclaving.Type: GrantFiled: June 18, 1996Date of Patent: July 27, 1999Assignee: Montell North America Inc.Inventors: David E. Pierick, Thomas J. O'Neal
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Patent number: 5904758Abstract: A novel method for cleaning the exterior surfaces of an automobile or other automotive vehicle. The surface that is to be cleaned is sprayed with a water solution of a mild detergent and then rubbed with a putty-like wad of a rubbing composition until the surface contaminants are loosened and adhere to or are suspended in the wad of rubbing composition. The wad of rubbing composition can be reworked from time to time to expose new, clean portions of the wad. The rubbing composition is substantially water free and contains a fatty acid or fatty ester, a fine abrasive, a polybutylene, and an oil absorbent filler. Various types and quantities of materials for the rubbing composition that will produce satisfactory, improved and optimum results are disclosed.Type: GrantFiled: May 24, 1996Date of Patent: May 18, 1999Inventor: John T. Kucala, III
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Patent number: 5891943Abstract: A thermoplastic resin composition which comprises (A) a thermoplastic polyester resin such as polybutylene terephthalate, (B) a rubber-modified styrenic resin such as an ABS resin, (C) an olefinic copolymer composed of (c-1) an olefinic polymer fragment and (c-2) a vinyl-series polymer fragment and (D) a branched ester obtainable from a C.sub.16-30 fatty acid and/or alcohol having at least one branched chain, and which may contain (E) an inorganic filler, (F) a flame-retardant, (G) an inorganic flame-retardant auxiliary and so on. This resin composition has improved friction/abrasion characteristics with maintaining its high mechanical characteristics, and is useful for providing a moulded article including a sliding member.Type: GrantFiled: June 18, 1997Date of Patent: April 6, 1999Assignee: Polyplastics Co., Ltd.Inventors: Toru Katsumata, Hiromitsu Seito
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Patent number: 5886066Abstract: A low wear polymeric composition exhibiting improved surface wear resistance and coefficients of friction characterized as a melt blend of a thermoplastic polymer and a lubricating system containing PTFE, pentaerythritol tetrastearate and fine particle, stearate coated calcium carbonate, a hindered amine, N,N'-ethylene bis-stearamide, and calcium ricinoleate. The composition is suitable for the preparation of shaped articles for use in fricitional environments.Type: GrantFiled: July 17, 1997Date of Patent: March 23, 1999Assignee: Hoechst Celanese CorporationInventor: Alex Forschirm
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Patent number: 5863979Abstract: A method of making paper in which dry chemical additives are incorporated into the pulp mixture by addition of an entire bag containing the additive directly to the mixture, the improvement being that the bag is sealed with an adhesive closure, the adhesive being a hot melt consisting essentially of a water dispersable polyamide prepared from a diacid component comprising in major portion an aliphatic diacid of 6 or fewer carbon atoms and a diamine component consisting of one or more compounds of the formula :H.sub.2 N--C.sub.y H.sub.2y --(OC.sub.2 H.sub.4).sub.x --O--C.sub.y H.sub.2y --NH.sub.2where y is 2 or 3 and x is 1-50 and a wax. Such bags will not leak in shipping and handling, and yet can be added directly to paper batches at ambient temperature in the manner of the unsealable bags employed in the prior art.Type: GrantFiled: October 11, 1996Date of Patent: January 26, 1999Assignee: H. B. Fuller Licensing and Finance, Inc.Inventor: Sharf U. Ahmed
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Patent number: 5854324Abstract: A polyacetal resin composition having excellent friction resistance and abrasion resistance performances is provided by improving the compatibility, dispersibility and interfacial adhesiveness between the polyacetal resin and an olefinic polymer.To a polyacetal resin (A), 1 to 100 parts by weight based on 100 parts by weight of the resin (A) of a modified olefinic polymer (B) modified with at least one member selected from the group consisting of an unsaturated carboxylic acid and an acid anhydride thereof, and their derivatives, and 0.1 to 100% by weight based on component (B) of an alkylene glycol polyme (C)r having a primary or secondary amino group(s) and having a number-average molecular weight of 400 to 500,000 are blended.Type: GrantFiled: September 24, 1997Date of Patent: December 29, 1998Assignee: Polyplastics Co., Ltd.Inventors: Yoshihisa Tajima, Hiroyuki Sano, Katsunori Takayama
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Patent number: 5852107Abstract: An internal mold release system is provided which comprises (a) a polysiloxane compound; and (b) an amine salt of a carboxylic acid.Type: GrantFiled: June 7, 1995Date of Patent: December 22, 1998Assignee: Imperial Chemical Industries PLCInventors: Herbert Russell Gillis, Paul William Mackey
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Patent number: 5852089Abstract: Rubber compositions for automotive tire treads are made up of a selected class of base rubbers and a selected class of synthetic plasticizers in specified amounts. The plasticizer is derived from esterification of a diglycerin or an alkylene oxide adduct of a polyhydric alcohol with a selected class of higher fatty acids. Gripping performance is maintained for a prolonged period of time.Type: GrantFiled: March 26, 1993Date of Patent: December 22, 1998Assignee: The Yokohama Rubber Co,, Ltd.Inventors: Tetsuji Kawazura, Eri Miura
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Patent number: 5847030Abstract: A process for the preparation of polymer latex particles by conducting a pre-reaction emulsification with monomer, polar comonomer, water, surfactant, chain transfer agent, and initiator; and which pre-reaction emulsification is effected at a low temperature of from about 3.degree. C. to about 35.degree. C., for example, and thereafter, effecting emulsion polymerization by heating the aforementioned emulsified mixture in a reactor at a temperature of from about 25.degree. C. to about 125.degree. C. The aforementioned reactor contents are retained at this temperature, that is 25.degree. C. to 125.degree. C. for an effective time period. Thereafter, the reaction mixture is cooled.Type: GrantFiled: August 2, 1996Date of Patent: December 8, 1998Assignee: Xerox CorporationInventors: Hadi K. Mahabadi, Grazyna E. Kmiecik-Lawrynowicz, T. Hwee Ng
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Patent number: 5846656Abstract: A stabilizing system for stabilizing polymeric materials against ultraviolet light and thermooxidative deterioration is provided in which the stabilizing system is in pellet form. The pellet is formed from a substantially dry homogeneous mixture of at least one stabilizer and an agent which will prevent melting of the stabilizer. The stabilizer compound makes up about 50% to about 98% by weight of the mixture. The stabilizers are antioxidants (such as phosphites and hindered phenols) or hindered amine UV light stabilizers, or combinations thereof. The melt preventing agent may be a compound derived from a fatty acid or a fatty alcohol, or a fatty acid or a fatty alcohol, or a combination of fatty acids or fatty alcohols which makes up about 3%-10% of the homogeneous mixture. The fatty acids, fatty alcohols, and the compounds derived therefrom preferably have a low melting point in the range of 50.degree.-100.degree. C. and preferably between 50.degree. C. and about 80.degree. C.Type: GrantFiled: April 10, 1997Date of Patent: December 8, 1998Assignee: Ciba Specialty Chemicals CorporationInventor: Neil Dunski
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Patent number: 5824398Abstract: This invention relates to polyester/plasticizer blends which are useful as heat-shrinkable films or sheets in low temperature shrink packaging applications. The heat-shrinkable films or sheets comprise a blend of (A) 90 to 99 weight percent of a polyester having a glass transition temperature of 40.degree. C. to 150.degree. C. and an inherent viscosity of 0.5 to 1.2 dL/g and (B) 1 to 10 weight percent of a plasticizer selected from a C.sub.5 to C.sub.35 monoglyceride prepared from the reaction of glycerol and a fatty acid having 4 to 30 carbon atoms, wherein the combined weights of (A) and (B) total 100 percent. The polyester comprises a dicarboxylic acid component comprising repeat units from at least 80 mole percent of an aromatic dicarboxylic acid having 8 to 14 carbon atoms and a diol component comprising repeat units from at least 10 mole percent of 1,4-cyclohexanedimethanol, based on 100 mole percent dicarboxylic acid and 100 mole percent diol.Type: GrantFiled: January 31, 1997Date of Patent: October 20, 1998Assignee: Eastman Chemical CompanyInventor: Wayne Ken Shih
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Patent number: 5814697Abstract: A color masterbach resin composition for a packaging material for a photographic photosensitive material which does not adversely affect photographic properties of the photographic photosensitive material, comprising a light-shielding material in a concentration thrice as much as or more that of the packaging material for a photographic photosensitive material, and a thermoplastic resin of which 50 wt. % or more is the same type as a thermoplastic resin occupying 50 wt. % or more of the total thermoplastic resin composing the packaging material for a photographic photosensitive material, production thereof, a packaging material for a photographic photosensitive material formed of a color masterbatch resin composition, and production thereof.Type: GrantFiled: March 6, 1997Date of Patent: September 29, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Mutsuo Akao, Koji Inoue
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Patent number: 5783619Abstract: There is disclosed a polyacetal resin composition that has excellent slidability and abrasion resistance and makes it possible to propose molded parts free of problems such as abrasion and noises such as squeaking caused by abrasion even when used under high load and high sliding speed conditions even when the material of the partner sliding parts is any type of plastic or metal. The resin includes from 0.5 to 15 parts by weight of olefinic elastomer, from 0.1 to 5.0 parts by weight of fatty acid ester having at least 12 carbon atoms, and, if necessary, from 0.05 to 5.0 parts by weight of polytetrafluoroethylene micropowder per 100 parts by weight of polyacetal resin.Type: GrantFiled: September 23, 1996Date of Patent: July 21, 1998Assignee: E. I. du Pont de Nemours and CompanyInventor: Kenichi Shinohara
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Patent number: 5770639Abstract: The invention relates to the use of fatty acids or fatty alcohols--which are solid at room temperature and/or which cure in the presence of air--and/or at least substantially water-insoluble esters, ethers and/or salts thereof with, in particular, polyvalent cations as degradable and biologically safe stabilizers for increasing the water resistance of soil impregnations based on polyvinyl esters, more particularly PVAc.Type: GrantFiled: March 26, 1997Date of Patent: June 23, 1998Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Wolfgang Ritter, Stephan von Tapavicza, Christiane Hoeltgen
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Patent number: 5763508Abstract: Dispersion powders including (a) a polymer of vinyl ester, vinyl ester/ethylene, (meth)acrylate or styrene/acrylate homo- and copolymers, (b) 1 to 25% by weight, based on the total weight of the polymer, of a protective colloid, (c) 0.1 to 10% by weight, based on the total weight of the polymer, of at least one saturated carboxylic acid ester of the formula C.sub.n H.sub.(2n+1) COOC.sub.m H.sub.(2m+1) where n=5 to 22 and m=1 to 8, and (d) 0 to 20% by weight, based on the total weight of the polymer, of anticaking agent, are useful, for example, as modifying agents in mortar and concrete for increasing the flexural tensile strength, compressive strength, and/or adhesive strength thereof.Type: GrantFiled: August 22, 1996Date of Patent: June 9, 1998Assignee: Clariant GmbHInventors: Stefan Hess, Michael Schottler, Ludwig Schmitz
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Patent number: 5756570Abstract: An electrical grade polyvinyl chloride resin composition suitable for use as an electrical insulation material and avoiding the use of lead based stabilizers having a high volume resistivity when exposed to or immersed in water and a high resistance to deterioration when heated at temperatures above 100.degree. C. is disclosed. The composition is composed of an electrical grade polyvinyl chloride resin, filler, carboxylic acid ester plasticizer, at least one heat stabilizer from which cadmium and lead are substantially excluded, and as a wet resistivity agent protecting against the effective of water, a defined amount of at least one alkaline earth metal oxide or hydroxide.Type: GrantFiled: March 17, 1997Date of Patent: May 26, 1998Assignee: Witco CorporationInventors: Samuel Hoch, Michael H. Fisch
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Patent number: 5756567Abstract: The injection-molding composition of the invention based on a talc-reinforced propylene polymer contains an additive combination of glyceryl monostearate plus fatty acid dialkanolamide in a mixing ratio in the range from 1:1 to 3:1 and a total amount of up to 1.5% by weight, based on the weight of the propylene polymer.Type: GrantFiled: April 10, 1996Date of Patent: May 26, 1998Assignee: Hoechst AktiengesellschaftInventor: Jurgen Rohrmann
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Patent number: 5719209Abstract: A process is provided for making a flame retardant thermoplastic composition. The process involves making a preblend composition by blending a lubricant with a tetrafluoroethylene polymer. The preblend is a shelf stable tetrafluoroethylene polymer composition which can be admixed with a thermoplastic and a flame retardant to make the flame retardant thermoplastic composition which are useful to make molded components for computer housings, keyboard housings, printer housings and power tool housings.Type: GrantFiled: October 18, 1994Date of Patent: February 17, 1998Assignee: General Electric CompanyInventors: Ronald R. Miller, Yoke Kum Fong, Roger D. Amos
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Patent number: 5719213Abstract: The present invention relates to an auxiliary agent for use in the synthesis of unsaturated polyester resins comprising a compound of the general formulaBCOO--A--COOB'and at least one compound selected from the group consisting of fatty acid amides, fatty acid divalent metal salts and their mixtures, whereby styrene emissions from unsaturated polyester resins are suppressed.Type: GrantFiled: January 23, 1997Date of Patent: February 17, 1998Assignee: Instytut Chemii PrzemysloweiInventors: Ewa Kicko-Walczak, Edward Grzywa, Wojciech Wojdak, Tadeusz Jakubas, Maria Szczepanowska, Zdzislaw Mental, Barbara Krawczyk
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Patent number: 5705550Abstract: A polyarylene sulfide resin composition is improved in mold releasing characteristics in molding, is thermally and chemically stable, evolves little decomposition gases and exhibits excellent mechanical characteristics. The composition can be prepared by blending (A) 100 parts by weight of a polyarylene sulfide resin with (B) 0.01 to 5 parts by weight of an ester compound composed of a polybasic aliphatic carboxylic acid and a monohydric aliphatic alcohol.Type: GrantFiled: August 22, 1996Date of Patent: January 6, 1998Assignee: Polyplastics Co., Ltd.Inventor: Nozomu Nakagawa
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Patent number: 5698621Abstract: There is disclosed a printable self-clinging flexible film containing a polymerized PVC-based resin, a primary plasticizer and a stabilizer. The film exhibits high tackiness and surface tension, and printing ink may be applied directly to the surface of the film. Compositions for forming the film, and related methods are also disclosed.Type: GrantFiled: April 7, 1995Date of Patent: December 16, 1997Assignees: Achilles USA, Inc., Achilles CorporationInventors: Bach T. Nguyen, Tomiki Matsumoto, Toshihiro Katagiri
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Patent number: 5656680Abstract: The invention provides a processing aid and method for lubricating and improving the processability and releasability of rubber and plastic without adversely affecting and, in certain instances, improving the physical properties of the rubber or plastic such as adhesion, tack, modulus and tensile strength. The processing aid comprises a pre-formed homogeneous mixture of at least one silicone fluid lubricant and at least one peptizing agent. A preferred processing aid also includes a silicone fluid wetting agent, which affords decreased vulcanization times and increased production rates.Type: GrantFiled: April 2, 1993Date of Patent: August 12, 1997Assignee: Technical Processing, Inc.Inventors: Enrique Aguirre, Paul R. Yankner