Antistatic Compositions Patents (Class 524/910)
Cross-Reference Art Collections
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Patent number: 5346959Abstract: An antistatic agent for thermoplastic polymers is provided wherein the antistatic agent is comprised of a functionalized alkylene oxide polymer and optionally a minor amount of an alkali or alkaline earth metal salt capable of complexing with the functionalized alkylene oxide polymer and wherein the thermoplastic polymers include styrenic polymers such as ABS; blends of an ABS copolymer and a styrene-maleic anhydride copolymer; or nylon 6.Type: GrantFiled: July 21, 1993Date of Patent: September 13, 1994Assignee: Monsanto CompanyInventors: Goman (Gomez) Peter M., Kishore Udipi, Lionel R. Stebbins
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Patent number: 5342889Abstract: The present invention relates to electrostatic dissipative polymeric compositions comprising an effective amount of a chain extended polymer and a matrix polymer or matrix polymer blend. The chain extended polymer of the subject invention has electrostatic dissipative properties and is formed from low molecular weight polyethers which are reacted with a chain extender to furnish a useful additive.Type: GrantFiled: July 10, 1991Date of Patent: August 30, 1994Assignee: The B. F. Goodrich CompanyInventors: Francis R. Sullivan, Elaine A. Mertzel, Edmond G. Kolycheck
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Patent number: 5334636Abstract: There is provided a polymer composition comprising,A) a polyphenylene ether resin and,B) optionally a styrene resin and,C) optionally impact strength improving amount of one or more of impact strength improving polymer(s) and,D) from about 5 parts to about 20 parts by weight of at least one mineral filler selected from the group consisting of talc, mica, and wollastonite based on 100 parts by weight of the total of the polymers, A) the polyphenylene ether resin, B) the styrene resin, and C) the impact strength improving polymer and,E) from about 5 parts to about 40 parts by weight of a carbon black based on the total of the polymers, A) the polyphenylene ether resin, B) the styrene resin, and C) the impact strength improving polymer and,F) optionally plasticizing amount of one or more of plasticizer(s),characterized in that the surface resistivity of the composition is lower than about 10.sup.10 ohm.Type: GrantFiled: March 26, 1992Date of Patent: August 2, 1994Assignee: Sumitomo Chemical Company, LimitedInventors: Takeshi Fujii, Manabu Ishikawa
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Patent number: 5334635Abstract: Antistatic thermoplastic styrenic compositions comprising high molecular weight polyethylene oxide and a lithium salt and ethylene glycol, diethylene glycol or triethylene glycol, characterized by their possession of a balance of mechanical properties, gloss and antistatic behavior.Type: GrantFiled: December 18, 1992Date of Patent: August 2, 1994Assignee: Monsanto CompanyInventor: Kishore Udipi
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Patent number: 5298558Abstract: The present invention relates to electrostatic dissipative impact modified polymeric compositions comprising an effective amount of a chain extended block copolymer, polyvinyl halide and no more than 10 weight parts of a polymeric impact modifier per 100 weight parts of polyvinyl chloride. The chain extended block copolymer is formed from reacting a di-functional polyether with a chain extender which is a condensate selected from the group consisting of polyundecanolactam, polydodecanolactam, poly(11-aminoundecanoic acid) and (12-aminododecanoic acid).Type: GrantFiled: June 2, 1992Date of Patent: March 29, 1994Assignee: The Geon CompanyInventors: Francis R. Sullivan, Elaine A. Mertzel, Craig L. Shoemaker
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Patent number: 5270367Abstract: A permanent antistatic resin composition comprising a styrene/lactone block copolymer and an antistatic agent with excellent heat resistance, transparency and permanent antistatic properties is disclosed.Type: GrantFiled: March 30, 1992Date of Patent: December 14, 1993Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Makoto Nakazawa, Tetuji Noda
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Patent number: 5237009Abstract: Disclosed is a composition for dissipating an electrostatic charge in a polymer matrix. The composition includes an oxirane copolymer wherein said copolymer is prepared from ethylene oxide and either a heterocyclic monomer or a vinyl type monomer. The polymer matrix is either a plastic or an elastomer. In a further embodiment, a third constituent of non ESD polymer or non ESD filler is utilized in the composition to further enhance the electrostatic dissipating performance, and optionally also toughness of the composition.Type: GrantFiled: April 24, 1991Date of Patent: August 17, 1993Assignee: The B. F. Goodrich CompanyInventor: Biing-lin Lee
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Patent number: 5223563Abstract: Thermoplastic polymer compositions comprise a polyphenylene ether resin, s styrene resin and a hygroscopic salt in an amount sufficient to provide the compositions with antistatic properties. Preferably, the hygroscopic salt comprises lithium chloride and is included in an amount of from about 0.5 to about 5 parts by weight per hundred parts by weight resins.Type: GrantFiled: October 20, 1989Date of Patent: June 29, 1993Assignee: General Electric CompanyInventor: Robert J. Axelrod
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Patent number: 5216046Abstract: Antistatic polymer blend compositions comprise an ABS graft copolymer, a copolymer of an epihalohydrin and a copolymerizable monomer having an oxirane group, and a surfactant.Type: GrantFiled: February 27, 1992Date of Patent: June 1, 1993Assignee: General Electric CompanyInventor: Stanley J. Kozmiski
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Patent number: 5198521Abstract: A water reaction synthesis with polyoxyethylene diol, diisocyanate and dibutyltin bis lauryl mercaptide produces a high molecular weight thermoplastic polyurethane-urea linear polymer with surface resistivity 10.sup.11 -10.sup.6 ohm/sq. Thermoplastic and/or elastomeric antistatic compositions containing other melt processable polymers and/or filler, and the polymer exhibit permanent protection. Antistatic protection can be increased when the polymer complexes with a metal salt such as lithium chloride, or lithium acetate. The composition is useful in the manufacture of antistatic floor coverings and textile texturing and drafting elements such as cots and aprons.Type: GrantFiled: October 29, 1991Date of Patent: March 30, 1993Assignee: Armstrong World Industries, Inc.Inventors: Wendell A. Ehrhart, Nowaf Halout, Kenneth K. Ko, David A. Smith
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Patent number: 5182338Abstract: The present invention is directed to the use of an epihalohydrin/ethylene oxide copolymer to impart antistatic properties to polyolefins, such as polypropylene.Type: GrantFiled: November 22, 1991Date of Patent: January 26, 1993Assignee: General Electric CompanyInventor: Satish K. Gaggar
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Patent number: 5164447Abstract: Polymer blend compositions comprises a polyvinyl halide polymer, an antistatic agent and a poly(alkylmethacrylate). Suitable antistatic agents comprise copolymers of epichlorohydrin and ethylene oxide. The poly(alkyl methacrylate) is included in the compositions in an amount effective to enhance the antistatic properties of the compositions.Type: GrantFiled: April 29, 1991Date of Patent: November 17, 1992Assignee: General Electric CompanyInventors: Satish K. Gaggar, Deborah M. Burks, Larry C. Stover
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Patent number: 5149724Abstract: The composition includes a polyglycerol monoester and an ethoxylated sorbitan ester incorporated into polyvinyl chloride or polyolefin thin films. The film composition has enhanced anti-static, anti-fogging and dynamic heat stability properties.Type: GrantFiled: October 23, 1989Date of Patent: September 22, 1992Assignee: Lonza Inc.Inventors: Timothy E. Fahey, Julia A. Falter
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Patent number: 5140056Abstract: The invention relates to the use of salts of sulfosuccinic acid esters as internal antistatic agents, take-off and winding aids for transparent cast films of polycarbonates, to a process for the production of cast polycarbonate films and to the cast polycarbonate films themselves containing salts of sulfosuccinic acids and also to the use of the new cast polycarbonate films in the electrical field and optical field.Type: GrantFiled: February 21, 1990Date of Patent: August 18, 1992Assignee: Bayer AktiengesellschaftInventors: Volker Wiskamp, Dittmar Nerger, Bernhard Schulte, Werner Waldenrath
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Patent number: 5100943Abstract: A permanent antistatic resin composition which comprises 100 parts by weight of a block copolymer and from 0.1 to 2.0 parts by weight of an antistatic agent, said block copolymer comprising polymer blocks of a vinyl aromatic compound, polymer blocks of a conjugated diene compound and polymer blocks of a lactone compound, wherein the content of the vinyl aromatic compound is from 10 to 100% by weight and the content of the conjugated diene compound is from 0 to 90% by weight, provided that the sum of the vinyl aromatic compound and the conjugated diene compound is from 30 to 99% by weight, and the content of the lactone compound is from 1 to 70% by weight.Type: GrantFiled: November 28, 1990Date of Patent: March 31, 1992Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Makoto Katoh, Tetuji Noda
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Patent number: 5098939Abstract: Diethanolamine and triglyceride are reacted to produce a reaction mixture comprising diethanol amide of monocarboxylic acid and hydroxy-functional glyceride. The reaction mixture is useful as an antistatic composition for formulating with polymers, especially polyolefins.Type: GrantFiled: March 23, 1990Date of Patent: March 24, 1992Assignee: PPG Industries, Inc.Inventors: Kenneth J. Sienkowski, Paritosh M. Chakrabarti
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Patent number: 5086106Abstract: A methacrylic resin cast plate having an excellent antistatic property comprises (A) 100 weight parts of a polymer comprising 50 to 100 weight % of methyl methacrylate units and 0 to 50 weight % of copolymerizable monomer units and (B) 0.1 to 20 weight parts of a polymer comprising 20 to 100 weight % of units derived from a monomer having a quaternary ammonium base, which is represented by the formula (I): ##STR1## wherein R.sub.1 is H or CH.sub.3, R.sub.2 through R.sub.4 are H or (Cl-9)alkyl which may have a substituent, m is from 1 to 10 and X.sup.- is an anion of a quaternizing agent,and 0 to 80 weight % of copolymerizable monomer units. The cast plate is obtained by polymerizing methyl methacrylate, a monomer mixture comprising at least 50 weight % of methyl methacrylate and up to 50 weight % of a copolymerizable monomer or a partial polymerization product thereof in the presence of the polymer (B).Type: GrantFiled: October 17, 1989Date of Patent: February 4, 1992Assignee: Mitsubishi Rayon Company Ltd.Inventors: Kiyotaka Azegami, Suehiro Tayama, Naoki Yamamoto, Akira Yanagase, Hiroki Hatakeyama
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Patent number: 5077330Abstract: A water reaction synthesis with polyoxyethylene diol, diisocyanate and dibutyltin bis lauryl mercaptide produces a high molecular weight thermoplastic polyurethane-urea linear polymer with surface resistivity 10.sup.11 -10.sup.6 ohm/sq. Thermoplastic and/or elastomeric antistatic compositions containing other melt processable polymers and/or filler, and the polymer exhibit permanent protection. Antistatic protection can be increased when the polymer complexes with a metal salt such as lithium chloride, or lithium acetate.Type: GrantFiled: May 4, 1990Date of Patent: December 31, 1991Assignee: Armstrong World Industries, Inc.Inventors: Wendell A. Ehrhart, Nowaf Halout, Kenneth K. Ko, David A. Smith
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Patent number: 5071899Abstract: Disclosed is an anti-stat which is effective in polyvinyl chloride polymeric parts to dissipate charge phenomena occurring at a surface thereof. The anti-stat comprises an ethoxylated fat-forming alcohol and a dibasic acid-capped fat-forming alcohol which is incorporated in an effective amount in the polyvinyl chloride polymeric material.Type: GrantFiled: February 2, 1990Date of Patent: December 10, 1991Assignee: Sherex Chemical Company, Inc.Inventor: Don S. Wozniak
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Patent number: 5037875Abstract: The dissipation of static electricity from film of ethylene/carboxylic acid copolymer is improved by the incorporation of a combination of antistatic compounds therein, viz sorbitan monooleate and certain alkyl phenol poly(ethylene oxides).Type: GrantFiled: January 2, 1991Date of Patent: August 6, 1991Assignee: E. I. du Pont de Nemours and CompanyInventor: James R. deGaravilla
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Patent number: 5025922Abstract: Disclosed is a thermoplastic polymeric composition having antistatic characteristics and a method to make same. The composition comprises a thermoplastic polymer in admixture with an antistatic agent. In one embodiment the polymer is nylon 12 and the agent is N-butyl benzenesulfonamide. Also disclosed is the antistatic polymeric composition in a film, which is useful for packaging static sensitive devices such as electronic circuit boards, or for packaging devices that must be protected from static electricity such as devices in a medical operating room where explosive oxygen and/or ether are present.Type: GrantFiled: June 9, 1989Date of Patent: June 25, 1991Assignee: W. R. Grace & Co.-Conn.Inventors: Marvin R. Havens, Joseph R. Lovin
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Patent number: 5010139Abstract: An antistatic polymeric composition consisting of at least one antistatic additive of an ethylene oxide copolymer in the range of from about 3% to about 30% by weight and being a solid, nonionic material and having a dilution solution viscosity of greater than 0.25 g/ml and preferably having an average molecular weight greater than 20,000; and a polymeric material in the range from about 70% to about 97% by weight. The ethylene oxide copolymer comprises ethylene oxide in the range of from about 5% to about 95% by weight and at least 1 comonomer selected the group consisting of cyclic ethers, cyclic acetals, and cyclic esters, in the range of from about 95% to about 5% by weight. The polymeric material can be any thermoplastic, thermoplastic elastomer, or elastomer including ABS, ASA, polyamides, PBT, PET, PETG, PMMA, PUR, PVC, CPVC, PC, POM, POP, SMA, and SAN.Type: GrantFiled: June 14, 1989Date of Patent: April 23, 1991Assignee: The B. F. Goodrich CompanyInventor: Simon H. P. Yu
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Patent number: 4944998Abstract: A surface covering product having static dissipative electrical properties comprises a consolidated agglomeration of individual chips of polymeric material and wherein at least a portion of said individual chips contain an antistatic agent. A second portion of individual chips contain no antistatic agent or a reduced amount of antistatic agent.Type: GrantFiled: January 26, 1989Date of Patent: July 31, 1990Assignee: Armstrong World Industries, Inc.Inventors: Kenneth K. Ko, Jesse D. Miller, Jr., Wayne R. Shelly, Susan M. Von Stetten
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Patent number: 4933233Abstract: A fire retardant antistatic coating and coated substrate. The coating includes a mixture of a radiation curable halogenated prepolymer, an effective amount of a quarternary ammonium compound antistatic agent and an effective amount of an antimony pentoxide flame retardant agent. A coated substrate having a substrate film material coated with the above coating is included. A method for making a fire resistant and antistatic film which includes the steps of: (a) providing a substrate film; (b) preparing the coating by mixing a radiation curable prepolymer with an effective amount of a quarternary ammonium antistatic compound and an effective amount of an antimony pentoxide fire retardant compound; (c) the coating is then applied to the film material; and (d) the coating is contacted with electron radiation in an amount sufficient to cure the coating.Type: GrantFiled: April 29, 1988Date of Patent: June 12, 1990Assignee: Metallized Products, Inc.Inventor: Allen H. Keough
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Patent number: 4926526Abstract: A reusable closure is described which comprises an elongate member molded from a plastics material having memory. The member is formed with a reduced thickness live hinge line extending along its length and leg portions defined on opposite sides of the live hinge line which can be urged towards and away from each other between locked and released positions. An upstanding ear extending along the length of each leg portion has a locking portion adapted to releasably snap into locking engagement with a corresponding locking portion on the other ear in the locked position. Rounded areas join each ear to its respective leg portion. A packaging and storage system using such closures is described, and methods of making such closures by extrusion or injection molding are disclosed.Type: GrantFiled: January 13, 1986Date of Patent: May 22, 1990Inventors: Christine C. Brown, Dennis G. Brown
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Patent number: 4911999Abstract: An improved electrostatic master is disclosed that contains a thiourea or thioamide electrostatic decay additive in a photopolymerizable composition of an ethylenically unsaturated monomer, an organic polymeric binder, and a photoinitiator system.Type: GrantFiled: December 13, 1988Date of Patent: March 27, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Carolyn C. Legere
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Patent number: 4912142Abstract: This invention is an antistatic thermoplastic, phase-segregated polyurethane containing, as an antistatic additive an effective amount of a monovalent metal tetraphenylboron salt, in the substantial absence of a fatty acid salt, a C.sub.6 -C.sub.30 carboxylic acid ester or phosphate ester compound.Suprisingly, it has been found that, with this particular type of polyurethane, tetraphenylboron salts are very effective antistatic additives even in the absence of enhancer compounds as were previously employed. Accordingly, the antistatic polyurethane is useful for applications such as electronics components and packaging, and other applications where static dissipative ability is needed or desirable.Type: GrantFiled: November 16, 1988Date of Patent: March 27, 1990Assignee: The Dow Chemical CompanyInventors: Robbert M. Vermeulen, Donald M. Maschmeyer
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Patent number: 4906681Abstract: Disclosed is an anti-stat which is effective in polyvinyl chloride polymeric parts to dissipate charge phenomena occurring at a surface thereof. The anti-stat comprises an ethoxylated fat-forming alcohol and a dibasic acid-capped fat-forming alcohol which is incorporated in an effective amount in the polyvinyl chloride polymeric material.Type: GrantFiled: June 29, 1989Date of Patent: March 6, 1990Assignee: Sherex Chemical Company, Inc.Inventor: Don S. Wozniak
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Patent number: 4899521Abstract: Disclosed is a film having antistatic characteristics and a method to make the film. The film comprises a blend of polyether block amide copolymer with an aromatic sulfonamide antistatic agent.Type: GrantFiled: September 28, 1987Date of Patent: February 13, 1990Assignee: W. R. Grace & Co. - Conn.Inventor: Marvin R. Havens
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Patent number: 4898771Abstract: Disclosed is a thermoplastic polymeric composition having antistatic characteristics and a method to make same. The composition comprises a thermoplastic polymer in admixture with an antistatic agent. In one embodiment the polymer is polyethylene and the agent is a mixture of polyethoxylated cetyl alcohol and glyceryl monostearate. Also disclosed is the antistatic polymeric composition in a film, which is useful for packaging static sensitive devices such as electronic circuit boards, or for packaging devices that must be protected from static electricity such as devices in a medical operating room where explosive oxygen and/or ether are present.Type: GrantFiled: September 21, 1988Date of Patent: February 6, 1990Assignee: W. R. Grace & Co.-Conn.Inventor: Marvin R. Havens
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Patent number: 4888134Abstract: A conductive foam having a surface resistance of not more than 9.9.times.10.sup.10 ohms as measured by DIN 53,345 may be prepared by incorporating into the base compound at least about 5 parts by dry weight per 100 parts by weight of polymer of a dispersion of carbon black stabilized by a soap predominantly of the same type as that compatible with the process used to set the foam; and processing the compound in a conventional manner.Type: GrantFiled: July 19, 1988Date of Patent: December 19, 1989Assignee: BASF AktiengesellschaftInventors: Jean-Pierre Kleitz, Piere H. A. Mertzeisen
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Patent number: 4882894Abstract: Disclosed is a thermoplastic polymeric composition having antistatic characteristics and a method to make same. The composition comprises a thermoplastic polymer in admixture with an antistatic agent. In one embodiment the polymer is nylon 12 and the agent is N-butyl benzenesulfonamide. Also disclosed is the antistatic polymeric composition in a film, which is useful for packaging static sensitive devices such as electronic circuit boards, or for packaging devices that must be protected from static electricity such as devices in a medical operating room where explosive oxygen and/or ether are present.Type: GrantFiled: October 14, 1986Date of Patent: November 28, 1989Assignee: W. R. Grace & Co.-Conn.Inventors: Marvin R. Havens, Joseph R. Lovin
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Patent number: 4875581Abstract: The invention features a static dissipative elastomeric outer coating for an electronic package composite. The coating is characterized by its superior abrasion resistant and electrical properties. The coating chemically bonds with the conductive layer and has superior static dissipative qualities characterized by a surface resistivity in the range of between 10.sup.5 and 10.sup.11 ohms per square.Type: GrantFiled: March 19, 1985Date of Patent: October 24, 1989Assignees: Robert B. Ray, Robert A. NealInventors: Robert Ray, Robert A. Neal, John R. Jaran, Tim Parker
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Patent number: 4826912Abstract: A surface covering product having static dissipative electrical properties is shown, which surface covering product comprises a consolidated agglomeration of individual chips of polymeric material and wherein at least a portion of said individual chips contain an antistatic agent.Type: GrantFiled: July 29, 1987Date of Patent: May 2, 1989Assignee: Armstrong World Industries, Inc.Inventors: Kenneth K. Ko, Jesse D. Miller, Jr., Wayne R. Shelly, Susan M. Von Stetten
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Patent number: 4818437Abstract: Improved compositions are disclosed which are useful in providing a conductive layer of coating on a surface to provide protection against harmful electrostatic discharges. Also disclosed are compositions useful in absorbing and dissipating mechanical and electromagnetic energy and preventing electrostatic build-up; these compositions also provide electromagnetic compatability. The compositions contain elemental carbon and a polymeric matrix or binder. The improvement comprises employing a unique ground calcined, coal-based coke which approaches graphite in terms of its performance as a conductive additive or pigment but which does not possess the disadvantages associated with the use of graphite.The unique coke employed in the compositions and methods of the present invention has a level of graphitic structure which approaches that of a true graphite. This level of graphitization can be most easily recognized by utilizing x-ray powder diffraction. More specifically, when the value of E.sub.Type: GrantFiled: July 19, 1985Date of Patent: April 4, 1989Assignee: Acheson Industries, Inc.Inventor: Robert E. Wiley
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Patent number: 4775716Abstract: An antistatic thermoplastic composition is provided which comprises about 80% or more by weight of a thermoplastic resin component which includes an ABS graft copolymer; and about 20% or less by weight of an epihalohydrin copolymer of an epihalohydrin and an oxirane-containing comonomer, wherein the ratio by weight of said epihalohydrin to said comonomer is less than 13:7.Type: GrantFiled: May 12, 1986Date of Patent: October 4, 1988Assignee: Borg-Warner Chemicals, Inc.Inventors: George Kipouras, Alan R. Federl
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Patent number: 4764428Abstract: A pelletizing antistatic agent composition and a method of forming same are provided. The composition includes a predominantly C.sub.18 alkyl ethoxylated primary amine component and a metal stearate type of component, preferably together with an antioxidant. The resulting composition is formed into a plurality of pellets and functions as an antistatic agent in plastics of various types, such as food packaging polyolefin materials.Type: GrantFiled: May 29, 1987Date of Patent: August 16, 1988Assignee: Witco Chemical CorporationInventor: Stewart E. Gloyer
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Patent number: 4687801Abstract: A resin composition which consists essentially of a thermoplastic resin, in which are included an alkali metal salt, and at least one kind of substances selected from the group consisting of vinylidene fluoride resin and dipolar aprotic solvents.Type: GrantFiled: September 17, 1985Date of Patent: August 18, 1987Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tetsuo Mitani, Fumiaki Baba, Katsuyoshi Iisaka
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Patent number: 4661547Abstract: An antistatic material containing a base material which is rubber and/or polyvinyl cloride resin, to which are added a cationic quaternary ammonium salt and polyethylene glycol, and optionally aluminum hydroxide or calcium carbonate. The antistatic material has a low electric resistance and excellent thermal stability, and can be colored in any color.Type: GrantFiled: November 8, 1985Date of Patent: April 28, 1987Assignee: Nippon Rubber Co., Ltd.Inventors: Masasuke Harada, Kouji Tsukamoto, Tomohiro Etou
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Patent number: 4645717Abstract: A treating solution for use in impregnating a paper sheet material useful in the preparation of electrically conductive high-pressure thermoset laminates, which treating solution comprises in combination: an aqueous resin solution which includes a heat-curable thermosetting formaldehyde-type resin; and, an electrically conductive amount of a quaternary ammonium compound sufficient to impart an electrical resistivity of about 10.sup.10 ohms per square inch or less to the impregnated thermoset paper sheet material.Type: GrantFiled: February 4, 1986Date of Patent: February 24, 1987Assignee: Charleswater Products, Inc.Inventor: George R. Berbeco
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Patent number: 4629585Abstract: A foamable antistatic polymer composition is provided comprising a thermoplastic polymer, an elastomeric polymer, conductive carbon black having BET surface area of at least 500 m.sup.2 /g and an amount of a blowing agent effective to expand said composition.Type: GrantFiled: June 27, 1984Date of Patent: December 16, 1986Assignee: Uniroyal Plastics Company, Inc.Inventors: Wendell J. McCracken, Roger C. Schmidt
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Patent number: 4617325Abstract: An antistatic agent for polymers, particularly polyurethanes is disclosed comprising an ionizable metal salt and an enhancer comprising a phosphate ester.Type: GrantFiled: July 2, 1985Date of Patent: October 14, 1986Assignee: The Dow Chemical CompanyInventors: Thomas M. Knobel, Earl E. Kennedy, Mary A. Walker
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Patent number: 4614675Abstract: A composition for treating a solid material to give it antimicrobic, hydrophilic and antistatic properties comprises siloxane compound which has one or more alkoxysilylalkyl groups and one or more polyoxyalkylene groups and a silane having antimicrobial properties. In a preferred embodiment the composition is used to treat fibers and fiber-containing materials. The composition can further contain a curing agent for the siloxane. Emulsion compositions are particularly useful.Type: GrantFiled: December 20, 1985Date of Patent: September 30, 1986Assignee: Toray Silicone Co., Ltd.Inventors: Isao Ona, Masaru Ozaki
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Patent number: 4613520Abstract: Described are coating compositions having improved antistatic properties and particularly magnetic coating compositions suitable for magnetic recording media. The compositions comprise at least one film-forming synthetic resin and, based on coating solids, from about 0.2 to about 10% of an alkali, alkaline earth, ammonium or amine salt of a perfluoroalkyl sulfonic acid or carboxylic acid.Type: GrantFiled: January 25, 1985Date of Patent: September 23, 1986Assignee: Hercules IncorporatedInventor: Sunil P. Dasgupta
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Patent number: 4579902Abstract: The present invention provides a permanently antistatic, injection moldable thermoplastic composition comprising a polybutylene terephthalate resin having an intrinsic viscosity in the range of about 0.7 to about 1.4 deciliters per gram measured in ortho-chlorophenol at 25.degree. C., an antistatic dopant comprising an electron acceptor compound, an electron donor compound, and polytetrafluoroethlene, and less than about 10 percent by weight based on the total weight of the molding composition of carbon fibers having lengths between about 0.1 and about 1.0 inch. Such a molding composition exhibits a volume resistivity of less than 1.times.10.sup.8 ohm-cm, exceptional low wear performance, excellent mechanical properties, and ease of manufacture.Type: GrantFiled: December 5, 1984Date of Patent: April 1, 1986Assignee: Celanese CorporationInventor: David P. O'Brien
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Patent number: 4559380Abstract: A polyacetal composition which comprises polyacetal, an aliphatic ester of a polyhydric alcohol having a hydroxy group, polyethylene glycol, and an organometallic salt, wherein the organometallic salt is present in an amount of from 0.01 to 5 percent by weight based on the total composition.Type: GrantFiled: April 8, 1985Date of Patent: December 17, 1985Assignee: Polyplastics Company, Ltd.Inventors: Takuzo Kasuga, Yukio Ikenaga, Masami Yamawaki, Keizo Tanimura
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Patent number: 4526952Abstract: Antistatic and/or electrically conductive thermoplastic polyurethanes contain carbon black whose surface area determined by the BET method is from 600 to 1200 m.sup.2 /g, have a dibutylphthalate absorption number of 300 to 450 cm.sup.3 /100 g, a pour density of less than 250 kg/m.sup.3, and an average particle size less than 50 nm.Incorporation of the carbon black into the thermoplastic polyurethane produced by the continuous sheet method takes place at temperatures under the primary melt peak for the crystalline rigid segments, measured by means of differential calorimetry, preferably in an extruder.The products are suitable for preparing films for flat heating elements, antistatic hoses, cables, and profiles.Type: GrantFiled: June 14, 1984Date of Patent: July 2, 1985Assignee: BASF AktiengesellschaftInventors: Gerhard Zeitler, Gerhard Bittner, Knud Faehndrich, Hans M. Rombrecht
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Patent number: 4504431Abstract: This application discloses a process of making electrically conductive fiber glass articles whereby carbon black is mixed with the resin to provide the desired value of electrical conductivity. A large amount of titanium dioxide is added to counteract the black color resulting from the carbon black addition. The resulting paste is added to fiber glass and the resin is cured thus resulting in a light gray or other gray tones. It is important that the carbon black, titanium and resin be thoroughly mixed to disperse the carbon and other pigments, and the mixing may be accomplished by means of a high intensity mixer or ball mill.Type: GrantFiled: November 2, 1983Date of Patent: March 12, 1985Assignee: Molded Fiber Glass CompaniesInventors: Robert E. Mollman, Ralph Silva
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Patent number: 4450249Abstract: The present invention relates to polycarbonate articles and films characterized by their antistatic properties comprising polycarbonate resin and alkali, or alkali earth, salts of specific aromatic sulfonic acids, specific aromatic phosphonic acids or aromatic partial phosphoric acid esters.Type: GrantFiled: August 19, 1982Date of Patent: May 22, 1984Assignee: Bayer AktiengesellschaftInventors: Manfred Schmidt, Joachim Wank, Eckart Reese, Dieter Freitag, Klaus Wangermann, Wolfgang Cohnen
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Patent number: 4438059Abstract: This application discloses a process of making electrically conductive fiber glass articles whereby carbon black is mixed with the resin to provide the desired value of electrical conductivity. A large amount of titanium dioxide is added to counteract the black color resulting from the carbon black addition. The resulting paste is added to fiber glass and the resin is cured thus resulting in a light gray or other gray tones. It is important that the carbon black, titanium and resin be thoroughly mixed to disperse the carbon and other pigments, and the mixing may be accomplished by means of a high intensity mixer or ball mill.Type: GrantFiled: September 22, 1982Date of Patent: March 20, 1984Assignee: Molded Fiber Glass CompaniesInventors: Robert E. Mollman, Ralph Silva