Polymer Chemically Or Physically Modified To Impart Antistatic Properties And Methods Of Antistatic Agent Addition Patents (Class 260/DIG21)
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Patent number: 6004889Abstract: Disclosed is a compositions for antistatic finish, which is useful for antistatic stockings, comprising (a) 100 parts by weight of colloidal or ultrafine granular alumina on a solid basis, (b) 3 parts to 50 parts by weight of a binder on a solid basis, (c) 0.02 part to 2 parts by weight of at least one selected from the group consisting of silver salts, copper salts and colloidal silver on a metallic atom basis, and (d) 848 parts to 896.08 parts by weight of water (including water occasionally contained in the components of (a) to (c)).Type: GrantFiled: April 28, 1998Date of Patent: December 21, 1999Assignee: Kabushiki Kaisya NippankenkyusyoInventor: Yoshio Ichikawa
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Patent number: 5688596Abstract: An aromatic polyamide filament includes extremely fine inorganic material having a high refractive index of 2.0 or more and an extremely fine average particle size of 0.3 .mu.m or less and dispersed, in an amount of 0.1 to 5% based on the total weight of the filament, in at least a surface portion of an aromatic polyamide filament matrix; has an individual filament thickness of 0.5 to 50 deniers, a tensile strength of 18 g/d or more, an ultimate elongation of 3.5% or more and an initial modulus of 450 g/d; and exhibits an enhanced weathering resistance derived from the high ultraviolet ray-reflecting, shielding and absorbing properties of the extremely fine inorganic particles dispersed in the filament matrix.Type: GrantFiled: March 20, 1995Date of Patent: November 18, 1997Assignee: Teijin LimitedInventors: Osamu Makino, Toshitsugu Matsuki, Toshihiro Santa
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Patent number: 5153075Abstract: An acid copolymer/quaternary amine mixture is disclosed which is permanently antistatic. The acid copolymer is a copolymer of (i) a major amount by mol % of an alpha-olefin of the formula RCH.dbd.CH.sub.2 wherein R is H or C.sub.1 to C.sub.8 alkyl, and (ii) a minor amount by mol % of an alpha,beta-ethylenically unsaturated carboxylic acid. The quaternary amine is of the formula [(R.sup.1)(R.sup.2)(R.sup.3)(R.sup.4)N]+ [X]- wherein R.sup.1 is selected from H, aryl, or C.sub.1 to C.sub.50 alkyl optionally having one or more non-contiguous C.dbd.O or NHC.dbd.O or --S-- or --O-- in the carbon chain, or the same as R.sup.2 ; each of R.sup.2, R.sup.3, and R.sup.4 is the same or different and selected from H, C.sub.1 to C.sub.18 alkyl optionally substituted with one or more OH or from --(R.sup.5 --O).sub.a --H where a is an integer from 1 to 10 and R.sup.5 is ethylene or propylene; and X is an anion selected from chloride, bromide, iodide, fluoride, nitrate, fluoborate, phosphate, C.sub.1 to C.sub.Type: GrantFiled: July 25, 1990Date of Patent: October 6, 1992Assignee: W. R. Grace & Co.-Conn.Inventors: Marvin R. Havens, William P. Roberts
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Patent number: 5081173Abstract: Disclosed are surface-active polycarbodiimides containing a hydrophilic portion and a hydrophobic portion joined through the reaction of a carbodiimide group with a reactive functional group. The surface-active polycarbodiimides may be linear or branched, monodisperse or polydisperse, but preferably are of the branched, monodisperse type. The surface-active polycarbodiimides are useful as surfactants, and are particularly useful as emulsifiers in cross-linkable, carboxyl-containing resin systems, such as aqueous latexes.Type: GrantFiled: March 13, 1989Date of Patent: January 14, 1992Assignee: Union Carbide Chemicals and Plastics Technology CorporationInventor: James W. Taylor
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Patent number: 4552687Abstract: Thermoplastic polymers, having antistatic properties, are obtained by incorporating in the polymers a liquid mixture of trialkylphosphine oxides.Type: GrantFiled: July 8, 1983Date of Patent: November 12, 1985Assignee: FMC CorporationInventors: Harry H. Beacham, Paul R. Mucenieks
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Patent number: 4438176Abstract: The present invention relates to thermoplastic films such as polypropylene and more particularly to bi-axially oriented polypropylene which are characterized by having excellent anti-static properties and good resistance to the transmission of oxygen and moisture vapor. These properties are achieved by the application of a thin primer layer containing poly (ethylenimine) to corona discharge treated oriented polypropylene film followed by the application of an aqueous dispersion of a vinylidene chloride multipolymer containing a water soluble polyol such as a low molecular weight glycol or a poly (ethylene oxide) adduct of a nonpolar molecule.Type: GrantFiled: January 12, 1983Date of Patent: March 20, 1984Assignee: Mobil Oil CorporationInventors: Robert H. Steiner, Robert E. Touhsaent
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Patent number: 4393159Abstract: A thermoplastic material formed from a hydrocarbon chain is modified to inhibit the production of static charges. The thermoplastic material may be a polypropylene. A weak salt having properties of ionizing and having its positive ions bond chemically to the thermoplastic material is mixed in the thermoplastic material. A chemical agent is also dispersed in the thermoplastic material and is provided with properties of facilitating the dispersion of the positive ions of the weak salt throughout the thermoplastic material for chemical bonding to the thermoplastic material. The chemical agent may also be bonded chemically to the thermoplastic material. The weak salt may be cupric acetate and the chemical agent may be an ethoxylated amine when the thermoplastic material is polypropylene. The polypropylene is preferably mixed with a suitable material such as polyethylene to enhance the amorphous characteristics of the thermoplastic material.Type: GrantFiled: December 4, 1981Date of Patent: July 12, 1983Assignee: Bengal, Inc.Inventor: William Lybrand
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Patent number: 4393176Abstract: A thermoplastic material formed from a hydrocarbon chain is modified to inhibit the production of static charges. The thermoplastic material may be a modified styrene or a polystyrene. A chemical agent is dispersed in the thermoplastic material and is provided with properties of combining with the carbon molecules in the modified styrene or the polystyrene. The chemical agent may be an amine. The amine is preferably ethoxylated.The polystyrene may be a crystal styrene or a high impact styrene. The amount of the ethoxylated amine in the material is dependent to some extent upon whether the polystyrene is a crystal styrene or a high impact styrene.The material of this invention may be formed as sheets as by extrusion or may be injection molded into different members such as panels. The material may be formed by mixing the ethoxylated amine and the polystyrene and extruding the mixture under conditions of controlled temperatures and pressures and for controlled dwell times.Type: GrantFiled: December 4, 1981Date of Patent: July 12, 1983Assignee: Bengal, Inc.Inventor: William Lybrand
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Patent number: 4391952Abstract: Polyethylene having a relatively high specific gravity is modified to inhibit the production of static charges. A weak salt having properties of ionizing and having its positive ions bond chemically to the polyethylene is mixed in the polyethylene. A chemical agent is also dispersed in the polyethylene and is provided with properties of facilitating the dispersion of the positive ions of the weak salt throughout the polyethylene of high specific gravity for chemical bonding to the polyethylene. The weak salt may be cupric acetate and the chemical agent may be an amine. The amine is preferably ethoxylated. The material of this invention may be formed as non-transparent bags or as sheets. The material may be formed by mixing the different chemicals and extruding the mixture under conditions of controlled temperatures and pressures and for controlled dwell times.Type: GrantFiled: December 4, 1981Date of Patent: July 5, 1983Assignee: Bengal, Inc.Inventor: William Lybrand
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Patent number: 4311655Abstract: A method of forming shaped articles from ionically cross-linked polymer compositions by subjecting an unshaped mass of said polymer composition to radio frequency energy of sufficient degree and time to cause dissociation of the ionically cross-linked regions while maintaining the mass at a temperature below the polymer degradation temperature and subjecting the polymer mass to sufficient shaping forces to form the polymer mass into desired shape.Type: GrantFiled: March 31, 1980Date of Patent: January 19, 1982Assignee: W. R. Grace & Co.Inventor: Bahram Siadat
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Patent number: 4301040Abstract: A static-free, polymeric surface mat to prevent the accumulation of static charge, particularly in the packaging and handling of electronic components and devices, which mat comprises a nonconductive, synthetic-material layer with a top surface, optionally an adhesive layer on the bottom surface of the synthetic material, and a solid or foam layer of a conductive material, such as an open-cell urethane foam impregnated with finely-divided conductive particles, and a film-forming binder material to secure the particles uniformly onto the foam.Type: GrantFiled: June 19, 1980Date of Patent: November 17, 1981Assignee: Charleswater Products, Inc.Inventor: George R. Berbeco
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Patent number: 4298710Abstract: An antistatic resin composition comprises 100 parts of a nitrile copolymer comprising 7 to 100% of a nitrile graft copolymer with a graft ratio of 4 to 50% obtained by graft-polymerizing a monomer mixture of a specific composition onto a rubber trunk polymer predominantly comprising a conjugated diolefin and/or an acrylate, and 0 to 93% of a nitrile random copolymer of a specific composition; and 0.05 to 10 parts of a surfactant added thereto. This antistatic resin composition, wherein the rubber trunk polymer forms a bridge structure, not only has, per se, an excellent antistatic property but also an antistatic property which undergoes substantially no change upon washing, for example, with water.Type: GrantFiled: August 30, 1979Date of Patent: November 3, 1981Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Masaki Ohya, Akio Kobayashi, Takeo Ogiwara, Yoshikatsu Satake
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Patent number: 4226750Abstract: Two plastics which were heretofore impossible to combine, can be combined with each other if the one to be added is converted to a porodin gel by heating the same at a temperature of at least 180.degree. C. with a substance that does not dissolve the polymer, and then cooling to below 120.degree.. The porodin gel can then be easily admixed with the other plastic material in an amount of 1 to 50% by weight, preferably 5 to 20% by weight based on the weight of the modified plastic material. Examples are the incorporation of polyethylene or polypropylene or polymethyl methacrylate in polyvinyl chloride, or the incorporation of polystyrene in polypropylene, or the incorporation of polymethyl methacrylate in polyethylene.Type: GrantFiled: June 13, 1978Date of Patent: October 7, 1980Assignee: Muanyagipari Kutato IntezetInventors: Miklos Dimitrov, Franciska K. Keleman nee Gulyas, Richard Marko, Tamas Pazonyi, Bela Pukanszky, Andras Riczko
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Patent number: 4221692Abstract: A process for the production of synthetic linear polymers which contain atives is described, in which the polymer and the additives, both in the fluid state, are mixed, the resulting mixture is homogenized, and the homogenized mixture is in part conveyed to apparatus which uses it to make a product and in part is recycled, the recycled amount being preferably at least 5% of the total weight of the mixture. The preferred polymers are polyamides. The additives may be of any kind, e.g. antistatics, and they may be added as such or as a master batch consisting of a polymeric base containing finely particulated solid materials such as carbon black, matting agents or pigments.Type: GrantFiled: September 27, 1978Date of Patent: September 9, 1980Assignee: SNIA VISCOSA Societa Nazionale Industria Applicazioni Viscosa s.p.a.Inventors: Giorgio Lambertini, Gianfranco Sala
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Patent number: 4201703Abstract: Intimate blends of polypivalolactone resin and polycarbonate resin enable the production of molded articles exhibiting low warpage properties.Type: GrantFiled: June 8, 1978Date of Patent: May 6, 1980Assignee: Ethyl CorporationInventors: Paul A. Zorzi, Jesse D. Jones, Michael E. Kucsma
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Patent number: 4147742Abstract: A concentrated antistatic composition adapted for incorporation into various polymers such as olefins is prepared by admixing a liquid ethoxylated amine antistatic agent, such as an N,N-bis-(2-hydroxyethyl) alkenyl or mixed alkenyl and alkyl (C.sub.6 -C.sub.18) amine, with various polymers such as, for example, polypropylene, heating to form a homogeneous liquid and rapidly cooling the mixture to form a solid antistatic agent. A normally liquid antistatic agent can thus be simply and readily blended into a polymer such as polyethylene as a dry, solid product to impart antistatic properties to the blended resin.Type: GrantFiled: October 15, 1975Date of Patent: April 3, 1979Assignee: Akzona IncorporatedInventors: Anthony J. Castro, James W. Stoll
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Patent number: 4123475Abstract: Thermoplastic compositions comprising a polyphenylene ether resin alone or in admixture with a styrene resin are rendered resistant to the accumulation of surface electrostatic charges by the inclusion, in a minor, effective amount, of an antistatic agent consisting of a mixture of triethanolamine, toluene sulfonic acid and sodium lauryl sulfate. Flame retardant embodiments are also provided.Type: GrantFiled: December 28, 1977Date of Patent: October 31, 1978Assignee: General Electric CompanyInventors: Visvaldis Abolins, Arthur Katchman
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Patent number: 4121026Abstract: This invention relates to copolymers of alpha-olefins and maleic anhydride reacted with amines in the presence of Lewis acids, preferably BF.sub.3 or a complex thereof; and to the use of these products as anti-static agents in organic liquids, preferably in hydrocarbons. The use of Lewis acid produces a unique reaction product which is superior as to fluidity and/or anti-static properties as compared to the corresponding product produced without Lewis acid. In addition, the use of Lewis acid promotes the rate of reaction thus reducing reaction time.Type: GrantFiled: March 23, 1973Date of Patent: October 17, 1978Assignee: Petrolite CorporationInventors: William J. Cheng, David B. Guthrie
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Patent number: 4112206Abstract: Polyvinyl chloride containing certain fluorocarbon surfactants has improved antistatic properties.Type: GrantFiled: July 5, 1977Date of Patent: September 5, 1978Assignee: Continental Oil CompanyInventor: James A. Wingrave
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Patent number: 4035346Abstract: An antistatic synthetic polymer having a T.sub.g (NMR) of less than 25.degree. C., a log R.sub.s of less than 10 and containing phosphonium sulfonate groups can be used to improve the conductivity of synthetic fiber-forming polymers.Type: GrantFiled: October 22, 1976Date of Patent: July 12, 1977Assignee: E. I. Du Pont de Nemours and Co.Inventors: Harry Vaughn Samuelson, Gurdial Singh
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Patent number: 4006123Abstract: An antistatic synthetic polymer having a T.sub.g (NMR) of less than 25.degree. C., a log R.sub.s of less than 10 and containing phosphonium sulfonate groups can be used to improve the conductivity of synthetic fiber-forming polymers.Type: GrantFiled: February 25, 1975Date of Patent: February 1, 1977Assignee: E. I. Du Pont de Nemours and CompanyInventors: Harry Vaughn Samuelson, Gurdial Singh
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Patent number: 4005057Abstract: Conductive compositions useful in imparting antistatic properties in filaments and other articles are provided, which comprise N-alkyl polycarbonamides, polyesters or polyetheresters having a Tg (NMR) less than 25.degree. C and from 0.02 to 35 weight percent of a phosphonium salt of a phosphonate, phosphinate, or sulfonate.Type: GrantFiled: September 17, 1975Date of Patent: January 25, 1977Assignee: E. I. Du Pont de Nemours and CompanyInventors: Gurdial Singh, Richard Edward VON Rutte
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Patent number: 3980715Abstract: 6-Hydroxyhexyl perfluoroisopropyl ether is prepared by reaction of hexafluoroacetone and potassium fluoride to obtain an alcoholate which is then reacted with 1-chloro-6-hexanol. One mole of the ether may be reacted with about 1 mole to about 20 moles of ethylene oxide. One mole of 2,2,3,4,4,4-hexafluorobutanol may also be reacted with about 1 mole to about 6 moles of propylene oxide and then about 1 mole to about 20 moles of ethylene oxide. Both ethoxylates are nonionic surfactants which are useful as antistatic agents and lubricants for polymeric shapes such as nylon films and filaments.Type: GrantFiled: March 21, 1975Date of Patent: September 14, 1976Assignee: Diamond Shamrock CorporationInventor: Alex J. Szur
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Patent number: 3937725Abstract: Alkali or alkaline earth metal salts of the reaction product of certain polyalkylene glycols of the formula ##EQU1## wherein N = 0 TO 100(m+p) = 10 to 500 ##EQU2## WITH A SULTONE. These products are superior and long lasting antistatic agents for use in connection with polyamide synthetic fibers.Polyamides compositions having antistatic properties as well as methods for manufacture of such compositions are also disclosed.Type: GrantFiled: August 21, 1972Date of Patent: February 10, 1976Assignee: Inventa AG fur Forschung und PatenverwertungInventor: Josef Pfeifer
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Patent number: 3935150Abstract: Disclosed is an aqueous acid solution or suspension of a preparation as well as the production thereof for the permanent finishing of fibre materials, especially dyed carpets, to render them antistatic, dirt-repellent and, optionally, antimicrobial, which aqueous preparation contains:A. 10 to 20 per cent by weight of at least one antistatic agent,B. 3 to 35 per cent by weight of a stabilised, aqueous non-film-forming dispersion of polystyrene,C. 1 to 6 percent by weight of at least one acid, especially o-phosphoric acid, andD. 0 to 5 percent by weight of further components, such as an antimicrobic agent and a solubility-promoting agent.Type: GrantFiled: June 4, 1974Date of Patent: January 27, 1976Assignee: Ciba-Geigy CorporationInventors: Josef Oxe, Rudolf Keller
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Patent number: 3933697Abstract: An antistatic polyurethane foam contains quaternary ammonium salt as an antistatic agent. The quaternary ammonium salt is added either to a raw material for polyurethane foam or to a prepared polyurethane foam by causing the foam to be impregnated with a solution containing the quaternary ammonium salt and drying it.Type: GrantFiled: July 30, 1974Date of Patent: January 20, 1976Assignee: Toyo Rubber Chemical Industrial CorporationInventors: Osamu Fujii, Toshio Kishimoto, Hisao Kosuge, Ryoji Nagamine, Sumio Shimada
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Patent number: RE33223Abstract: The invention relates to plastics materials of high electrical conductivity containing TCNQ complexes and stabilized against the emission of HCN and to mouldings, films and coatings of such materials, as well as to the use of the plastics material for the production of antistatic foils and coatings onto substrate.Type: GrantFiled: January 15, 1988Date of Patent: May 29, 1990Assignee: Bayer AktiengesellschaftInventors: Friedrich Jonas, Jurgen Hocker