Polymer Chemically Or Physically Modified To Impart Antistatic Properties And Methods Of Antistatic Agent Addition Patents (Class 260/DIG21)
  • Patent number: 6004889
    Abstract: 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: Grant
    Filed: April 28, 1998
    Date of Patent: December 21, 1999
    Assignee: Kabushiki Kaisya Nippankenkyusyo
    Inventor: Yoshio Ichikawa
  • Patent number: 5688596
    Abstract: 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: Grant
    Filed: March 20, 1995
    Date of Patent: November 18, 1997
    Assignee: Teijin Limited
    Inventors: Osamu Makino, Toshitsugu Matsuki, Toshihiro Santa
  • Patent number: 5153075
    Abstract: 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: Grant
    Filed: July 25, 1990
    Date of Patent: October 6, 1992
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Marvin R. Havens, William P. Roberts
  • Patent number: 5081173
    Abstract: 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: Grant
    Filed: March 13, 1989
    Date of Patent: January 14, 1992
    Assignee: Union Carbide Chemicals and Plastics Technology Corporation
    Inventor: James W. Taylor
  • Patent number: 4552687
    Abstract: Thermoplastic polymers, having antistatic properties, are obtained by incorporating in the polymers a liquid mixture of trialkylphosphine oxides.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: November 12, 1985
    Assignee: FMC Corporation
    Inventors: Harry H. Beacham, Paul R. Mucenieks
  • Patent number: 4438176
    Abstract: 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: Grant
    Filed: January 12, 1983
    Date of Patent: March 20, 1984
    Assignee: Mobil Oil Corporation
    Inventors: Robert H. Steiner, Robert E. Touhsaent
  • Patent number: 4393176
    Abstract: 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: Grant
    Filed: December 4, 1981
    Date of Patent: July 12, 1983
    Assignee: Bengal, Inc.
    Inventor: William Lybrand
  • Patent number: 4393159
    Abstract: 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: Grant
    Filed: December 4, 1981
    Date of Patent: July 12, 1983
    Assignee: Bengal, Inc.
    Inventor: William Lybrand
  • Patent number: 4391952
    Abstract: 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: Grant
    Filed: December 4, 1981
    Date of Patent: July 5, 1983
    Assignee: Bengal, Inc.
    Inventor: William Lybrand
  • Patent number: 4311655
    Abstract: 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: Grant
    Filed: March 31, 1980
    Date of Patent: January 19, 1982
    Assignee: W. R. Grace & Co.
    Inventor: Bahram Siadat
  • Patent number: 4301040
    Abstract: 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: Grant
    Filed: June 19, 1980
    Date of Patent: November 17, 1981
    Assignee: Charleswater Products, Inc.
    Inventor: George R. Berbeco
  • Patent number: 4298710
    Abstract: 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: Grant
    Filed: August 30, 1979
    Date of Patent: November 3, 1981
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masaki Ohya, Akio Kobayashi, Takeo Ogiwara, Yoshikatsu Satake
  • Patent number: 4226750
    Abstract: 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: Grant
    Filed: June 13, 1978
    Date of Patent: October 7, 1980
    Assignee: Muanyagipari Kutato Intezet
    Inventors: Miklos Dimitrov, Franciska K. Keleman nee Gulyas, Richard Marko, Tamas Pazonyi, Bela Pukanszky, Andras Riczko
  • Patent number: 4221692
    Abstract: 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: Grant
    Filed: September 27, 1978
    Date of Patent: September 9, 1980
    Assignee: SNIA VISCOSA Societa Nazionale Industria Applicazioni Viscosa s.p.a.
    Inventors: Giorgio Lambertini, Gianfranco Sala
  • Patent number: 4201703
    Abstract: Intimate blends of polypivalolactone resin and polycarbonate resin enable the production of molded articles exhibiting low warpage properties.
    Type: Grant
    Filed: June 8, 1978
    Date of Patent: May 6, 1980
    Assignee: Ethyl Corporation
    Inventors: Paul A. Zorzi, Jesse D. Jones, Michael E. Kucsma
  • Patent number: 4147742
    Abstract: 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: Grant
    Filed: October 15, 1975
    Date of Patent: April 3, 1979
    Assignee: Akzona Incorporated
    Inventors: Anthony J. Castro, James W. Stoll
  • Patent number: 4123475
    Abstract: 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: Grant
    Filed: December 28, 1977
    Date of Patent: October 31, 1978
    Assignee: General Electric Company
    Inventors: Visvaldis Abolins, Arthur Katchman
  • Patent number: 4121026
    Abstract: 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: Grant
    Filed: March 23, 1973
    Date of Patent: October 17, 1978
    Assignee: Petrolite Corporation
    Inventors: William J. Cheng, David B. Guthrie
  • Patent number: 4112206
    Abstract: Polyvinyl chloride containing certain fluorocarbon surfactants has improved antistatic properties.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: September 5, 1978
    Assignee: Continental Oil Company
    Inventor: James A. Wingrave
  • Patent number: 4035346
    Abstract: 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: Grant
    Filed: October 22, 1976
    Date of Patent: July 12, 1977
    Assignee: E. I. Du Pont de Nemours and Co.
    Inventors: Harry Vaughn Samuelson, Gurdial Singh
  • Patent number: 4006123
    Abstract: 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: Grant
    Filed: February 25, 1975
    Date of Patent: February 1, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Harry Vaughn Samuelson, Gurdial Singh
  • Patent number: 4005057
    Abstract: 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: Grant
    Filed: September 17, 1975
    Date of Patent: January 25, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gurdial Singh, Richard Edward VON Rutte
  • Patent number: 3980715
    Abstract: 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: Grant
    Filed: March 21, 1975
    Date of Patent: September 14, 1976
    Assignee: Diamond Shamrock Corporation
    Inventor: Alex J. Szur
  • Patent number: 3937725
    Abstract: 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: Grant
    Filed: August 21, 1972
    Date of Patent: February 10, 1976
    Assignee: Inventa AG fur Forschung und Patenverwertung
    Inventor: Josef Pfeifer
  • Patent number: 3935150
    Abstract: 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: Grant
    Filed: June 4, 1974
    Date of Patent: January 27, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Josef Oxe, Rudolf Keller
  • Patent number: 3933697
    Abstract: 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: Grant
    Filed: July 30, 1974
    Date of Patent: January 20, 1976
    Assignee: Toyo Rubber Chemical Industrial Corporation
    Inventors: Osamu Fujii, Toshio Kishimoto, Hisao Kosuge, Ryoji Nagamine, Sumio Shimada
  • Patent number: RE33223
    Abstract: 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: Grant
    Filed: January 15, 1988
    Date of Patent: May 29, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Friedrich Jonas, Jurgen Hocker