Mixing With Two Or More Chlorine- Or Bromine-containing Organic Compounds; Or With A Chlorine- Or Bromine-containing Organic Compound Other Than Carbon Tetrachloride, Chloroform, Or Methylene Chloride, And Having Numerical Limitations Other Than Amount, E.g., Included Herein, Are M.p., B.p., M.w, Structure, Etc., Or Composition Or Product Thereof, Dnrm Patents (Class 524/465)
  • Patent number: 8349449
    Abstract: The invention covers a method of forming functionally active fibers and substrates including functionally active fibers. The method includes forming a mixture of at least one poly vinyl polymer and at least one bleaching active. The mixture is then injected at a controlled flow rate into an electric field to cause the mixture to at least partially form fine fibers that have an average diameter of less than about 1000 nanometers.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: January 8, 2013
    Assignee: The Clorox Company
    Inventors: Marc Privitera, David Jackson Lestage, Edward Jason White
  • Patent number: 7612133
    Abstract: The invention relates to a process for preparing a stabilized suspension/emulsion polymer of halogen-containing monomers with addition of a polymer stabilizer mixture compatible with the polymerization medium prior to, during or directly after the polymerization process, and to the polymers prepared by this process.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: November 3, 2009
    Assignee: Chemtura Vinyl Additives GmbH
    Inventors: Karl-Josef Kuhn, Hans-Helmut Friedrich
  • Patent number: 7504449
    Abstract: Novel formulations comprising pentabromobenzylbromide (PBBBr) and a carrier, for use as a flame retardant for application on a substrate, and processes for their preparation are disclosed. Further disclosed are articles-of-manufacture having these formulations applied thereon, and the use of PBBBr as a flame retardant for application on a substrate. These novel formulations are particularly effective as flame retardants for textiles, and are characterized by a low add-on and a high washing fastness.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: March 17, 2009
    Assignee: Bromine Compounds Ltd.
    Inventors: Royi Mazor, Itzhak Shalev, Asher Shoshan, Michael Peled
  • Patent number: 7470734
    Abstract: Polymeric substrates, for example polyolefins such as polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of (i.) at least one compound selected from the group consisting of nitroxyl stabilizers, hydroxylamine stabilizers, nitrone stabilizers, substituted hydroxylamine stabilizers, amine oxide stabilizers, benzofuranone stabilizers, phosphite and phosphonite stabilizers, quinone methide stabilizers and monoacrylate esters of 2,2?-alkylidenebisphenol stabilizers and (ii.) at least one compound selected from the group consisting of brominated flame retardants, phosphorus containing flame retardants and inorganic flame retardants such as ammonium polyphosphate or decabromodiphenyl oxide; wherein the amount of organic or inorganic flame retardant of component (ii.) required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when component (i.) is not present.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: December 30, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Malisa V. Troutman, Ramanathan Ravichandran, Rangarajan Srinivsan, Roswell Easton King, Douglas Wayne Horsey
  • Patent number: 7405254
    Abstract: Disclosed are flame retardant compositions comprised of (a) brominated anionic styrenic polymer, and (b) at least one polybrominated alpha-omega diphenylalkane having a total of at least 6 bromine atoms directly bonded to the phenyl rings and in the range of 1 to 6 carbon atoms in the alkylene group disposed between the phenyl groups, and specified flame retarded polymer compositions with which have been blended (a) and (b) individually or in combination.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: July 29, 2008
    Assignee: Albemarle Corporation
    Inventors: Luc Van Muylem, Samuel G. Thomas, Jr., Susan D. Landry, Douglas W. Luther
  • Patent number: 7405255
    Abstract: The present invention relates to solutions and/or dispersions of organic semiconductors in a solvent mixture of at least two different organic solvents, characterized in that A. Each of the solvents on its own has a boiling point of below 200° C. and a melting point of 15° C. or less, B. at least one of the solvents has a boiling point in the range from greater than 140 to less than 200° C., C. the solvents used have no benzylic CH2 or CH groups, D. the solvents used are not benzene derivatives containing tert-butyl substituents or more than two methyl substituents, and their use in printing processes for producing layers of organic semiconductors, especially for the electronics industry.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: July 29, 2008
    Assignee: Merck Patent GmbH
    Inventors: Hubert Spreitzer, Heinrich Becker, Kevin Treacher, Susanne Heun, Andreas Sauer
  • Patent number: 7300968
    Abstract: A spin fluid for producing plexifilamentary products made of a polyolefin dissolved in a primary solvent of dicloromethane or 1,2-dichloroethylene with a straight chain hydrofluorocarbon co-solvent.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: November 27, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Shin Hyunkook
  • Patent number: 7202296
    Abstract: Disclosed are flame retardant compositions comprised of (a) brominated anionic styrenic polymer, and (b) at least one polybrominated alpha-omega diphenylalkane having a total of at least 6 bromine atoms directly bonded to the phenyl rings and in the range of 1 to 6 carbon atoms in the alkylene group disposed between the phenyl groups, and specified flame retarded polymer compositions with which have been blended (a) and (b) individually or in combination.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: April 10, 2007
    Assignee: Albemarle Corporation
    Inventors: Luc Van Muylem, Samuel G. Thomas, Jr., Susan D. Landry, Douglas W. Luther
  • Patent number: 7105589
    Abstract: The invention relates to thermoplastic molded masses, comprising A) 10 to 97 wt. % of at least one thermoplastic polyester, B) 1 to 30 wt. % of a flame-resistant agent combination with, based on 100 wt. % B), b1) 20 to 99 wt. % of a halogenated flame resistant agent, b2) 1 to 80 wt. % of a antimony oxide, C) 0.01 to 3 wt. % of at least one polyamide, D) 0.01 to 2 wt. % of at least one nigrosin, E) 0.01 to 3 wt. % of at least one anti-dripping agent and F) 0 to 70 wt. % of further adjuncts, whereby the sum of components A) to F) is 100%.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: September 12, 2006
    Assignee: BASF Aktiengesellschaft
    Inventor: Michael Geprägs
  • Patent number: 7091270
    Abstract: The present invention provides novel pentabromobenzyl alkyl ethers serving as highly effective flame retardants in polymers. The invention further provides a fire retarded polymer composition comprising said pentabromobenzyl alkyl ethers.
    Type: Grant
    Filed: January 23, 2000
    Date of Patent: August 15, 2006
    Assignee: Bromine Compounds Ltd.
    Inventors: Joseph Zilberman, Alon Tavor, Dorit Canfi, David Ioffe, Grigory Titelman, Samuel Bron, Olga Weinberg
  • Patent number: 7012112
    Abstract: A thermoplastic resin composition for an electrical/electronic contact part according to the present invention includes a thermoplastic resin and a polyol, wherein the polyol is contained in a range of 0.2 to 10 parts by weight based on 100 parts by weight of the thermoplastic resin. Alternatively, a thermoplastic resin composition for an electrical/electronic contact part according to the present invention includes: a thermoplastic resin; a halogenated aromatic compound which is contained in a range of 1 to 50 parts by weight based on 100 parts by weight of the thermoplastic resin; and a double salt represented by at least one of (X2O)n.Sb2O5 and (YO)n.Sb2O5, where X represents a monovalent alkaline metal element, and Y represents a divalent alkaline earth metal element, and n represents a ratio of X2O or YO to Sb2O5 exceeding 0.7, the double salt having an adsorbed water elimination rate of not more than 50 min.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: March 14, 2006
    Assignees: Omron Corporation, Mitsubishi Engineering Plastics Corporation
    Inventors: Yutaka Takenaka, Kenji Funaki, Toshiyuki Furuya, Shigeru Muramatsu, Yoshitaka Kanazawa, Osamu Kimura
  • Patent number: 6780914
    Abstract: The present invention provides a flame retardant resin composition, or more particularly, a flame retardant polypropylene resin composition which comprises polypropylene having improved flow melt characteristics, flame retardants, a flame retardant aid, and a tetrafluoroethylene polymer. The composition of the present invention has high melt tension, without deterioration of the mechanical properties of flame retardant polypropylene, and drastically enhanced characteristics of shape maintenance and a flaming drip during burning.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: August 24, 2004
    Assignee: Samsung General Chemicals Co., Ltd.
    Inventors: In-Sik Jung, Man-Seang Her, Jong-Su Hong, Sung-Man Lee
  • Publication number: 20040092638
    Abstract: Polyamide compositions containing non-melt-processible fluoropolymers as additives, and processes for making such additives. The fluoropolymer particles have a standard specific gravity (SSG) of less than 2.225 and comprise a core of high molecular weight polytetrafluoroethylene and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene.
    Type: Application
    Filed: August 27, 2003
    Publication date: May 13, 2004
    Inventors: Marvin M. Martens, Gloria Jean Jones, Clay Woodward Jones
  • Publication number: 20040092642
    Abstract: The present invention relates to a flame-retarded styrene-based plastic composition comprising (A) a styrene-based plastic material (B) a brominated aromatic compound having a melting point from 200° C. to 260° C. in which all bromine atoms are attached to the aromatic ring, (C) a brominated aromatic compound having a melting point above 300° C. in which all bromine atoms are attached to the aromatic ring, (D) an organic compound having at least one 2,3-dibromopropyl group, and optionally (E) antimony trioxide.
    Type: Application
    Filed: July 24, 2003
    Publication date: May 13, 2004
    Inventor: Hideaki Onishi
  • Patent number: 6632870
    Abstract: Flame-retarded transparent plastic compositions comprising polyhalgenated trimethylphenyl indan. The polyhalogenated trimethylphenyl indan is a mixture of polyhalogenated trimethylphenyl indanes having each 3 to 9 halogen atoms. The halogen may be bromine or a mixture of bromine and chlorine. The transparent plastic is selected from polycarbonate, polymethylmethacrylate, and polystyrene. The polyhalogenated trimethylphenyl indan is present in an amount of up to about 40% by weight. The transparent plastic flame-retarded material is prepared by mixing the plastic matrix with a flame-retardant effective amount of a polyhalogenated trimethylphenyl indan.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: October 14, 2003
    Assignee: Bromine Compounds Ltd.
    Inventors: Ita Finberg, Lev Utevski
  • Publication number: 20030166753
    Abstract: A carbon monoxide modified ethylene-vinyl acetate copolymer composition is disclosed, having diminished tendency to cause discoloration on heating at 177° C. of a plastic composition whose major polymeric component is polyvinyl chloride, comprising carbon monoxide modified ethylene-vinyl acetate copolymer and an amount, effective in diminishing discoloration, of at least one inorganic perchlorate salt selected from the group consisting of alkali metal perchlorates and alkaline earth metal perchlorates.
    Type: Application
    Filed: January 14, 2002
    Publication date: September 4, 2003
    Applicant: CROMPTON CORPORATION
    Inventors: Kook Jin Bae, Stuart D. Brilliant, Johannes Kaufhold
  • Publication number: 20030153661
    Abstract: An aluminum hydroxide composition is disclosed, having diminished tendency to cause discoloration on heating at 177° C. of a plastic composition whose major polymeric component is polyvinyl chloride, comprising aluminum hydroxide and an amount, effective in diminishing discoloration, of at least one inorganic perchlorate salt selected from the group consisting of alkali metal perchlorates and alkaline earth metal perchlorates.
    Type: Application
    Filed: January 4, 2002
    Publication date: August 14, 2003
    Applicant: CROMPTON CORPORATION
    Inventors: Kook Jin Bae, Stuart D. Brilliant
  • Publication number: 20030153656
    Abstract: A free-flowing, stable liquid flame retardant mixture comprised of or formed by mixing together components comprised of: A) tetrabromobisphenol-A; B) at least one liquid ester of a pentavalent acid of phosphorus; and C) at least one additional organic halogen-containing reactive flame retardant where the halogen is chlorine or bromine or both. Such mixtures can be effectively used in the preparation of flame-retardant polyurethanes including rigid polyurethane foams. It is preferable to include one or more liquid esters of a pentavalent acid of phosphorus in the liquid flame retardant mixture. C) is preferably at least one diester/diol of tetrabromophthalic anhydride, especially a mixed ester of tetrabromophthalic anhydride with diethylene glycol and propylene glycol, which by itself is a relatively viscous substance.
    Type: Application
    Filed: January 11, 2002
    Publication date: August 14, 2003
    Inventor: Rinus Sjerps
  • Publication number: 20030139507
    Abstract: A flame retarded polyolefin resin composition comprises polyolefin resin, 1 to 40 parts by weight per 100 parts of the polyolefin resin of a brominated bisphenol ether derivative of the formula: 1
    Type: Application
    Filed: November 18, 2002
    Publication date: July 24, 2003
    Inventors: Makoto Teramoto, Hideaki Onishi
  • Publication number: 20030139508
    Abstract: A flame retarded polyolefin resin composition comprises polyolefin resin, 1 to 40 parts by weight per 100 parts of the polyolefin resin of a brominated bisphenol ether derivative of the formula 1: 1
    Type: Application
    Filed: November 18, 2002
    Publication date: July 24, 2003
    Inventors: Makoto Teramoto, Hideaki Onishi
  • Patent number: 6448310
    Abstract: A method of making a dry, solid, powdered flame retardant composition is disclosed. Polyvinyl chloride is mixed with about 20 to about 150 phr of a liquid flame retardant having the general formula at a temperature of about 50 to about 100° C., where R1 and R2 are independently selected from aliphatic from C2 to C20. Also disclosed are a dry, solid, powdered flame retardant composition made by this method, a method of making a flame retardant polymer by compounding that dry, solid, powdered flame retardant composition with a polymer, and a flame retardant polymer made by that method.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: September 10, 2002
    Assignee: Laurel Industries, Inc.
    Inventor: Ronald L. Markezich
  • Publication number: 20020040089
    Abstract: The flame-retardant polyamide composition of the present invention comprises (A) 20 to 80% by weight of an aromatic polyamide, composed of recurring units of dicarboxylic acid component unit and diamine component unit, the former composed of 30 to 100% by mol of a terephthalic acid component unit and 0 to 70% by mol of an aromatic dicarboxylic acid component unit other than terephthalic acid and/or 0 to 70% by mol of a C4 - C20 aliphatic dicarbolic acid component unit and the latter composed of an aliphatic diamine component unit and/or an alicyclic diamine component unit; and having an MFR of 40 to 300 g/10 minutes, determined at a load of 2,160 g and temperature of 10° C. plus melting point, and melting point exceeding 290° C.
    Type: Application
    Filed: August 7, 2001
    Publication date: April 4, 2002
    Inventor: Kunihiro Ouchi
  • Patent number: 6277915
    Abstract: Block chlorinated polyolefins are disclosed as performance enhancer of high rubber graft copolymers or chlorinated polyethylenes impact modifier in PVC and/or CPVC resins. The block chlorinated polyolefins (e.g. block chlorinated polyethylene) provide good dispersion of the impact modifier particles in the matrix and better adhesion between the impact modifier and the PVC and/or CPVC interface, providing better physical properties such as impact strength as measured by Notched Izod than did the randomly chlorinated polyolefins, often used as processing aids and as impact modifiers in PVC or CPVC. The differences in properties achieved with block chlorinated polyolefins versus randomly chlorinated polyolefins are attributed to the individual blocks of the blocky polyolefin being compatible with either the impact modifier or the PVC/CPVC resulting in better adhesion between phases.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: August 21, 2001
    Assignee: PMD Holdings Corporation
    Inventors: Carole Angèle Lepilleur, Robert Edwin Detterman
  • Patent number: 5977237
    Abstract: A flash-spinning solution of a polyolefin dissolved in a primary solvent selected from the group consisting of methylene chloride and dichloroethylene, and a co-solvent selected from the group of hydrofluoroethers, cyclic perfluorinated hydrocarbons, and cyclic partially fluorinated hydrocarbons.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: November 2, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Hyunkook Shin, Roger Keith Siemionko
  • Patent number: 5922798
    Abstract: A microencapsulatable solvent adhesive composition for coupling plastic conduits, such as pipes, connectors and related fittings comprises a water-insoluble polymer and a mixture of volatile organic solvents for the polymer, each of the solvents having 6 to 40 carbon atoms. This solvent adhesive composition is suitable for microencapsulation by aqueous-based microencapsulation processes. A plurality of microcapsules encapsulating the solvent adhesive composition are bound to a polymeric surface of a conduit, such as a pipe connector or fitting, by a binder composition, to form a surface coated with a layer of rupturable microcapsules. When the microcapsules are ruptured upon joining of the coated conduit to a second conduit, the volume of the released solvent adhesive composition is sufficient to cement the surfaces together.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: July 13, 1999
    Assignee: The Lamson & Sessions Co.
    Inventors: Mark A. Roesch, David A. Maccarone, Gary F. Hillenbrand, Morris F. Newsom
  • Patent number: 5869560
    Abstract: Materials not releasing gaseous organic materials during use are used as a dry-type sealing material such as a gasket disposed upon mounting an air filter to an opening of a ceiling or the like, a wet-type sealing material filled and used in a gap for connecting wall materials or partitionings, a vinyl chloride sheet or a vinyl chloride cloth as a facing material for walls and floors. Specifically, a carboxylic acid ester having a molecular weight of not less than 400 is used as a plasticizer, a phenolic compound having a molecular weight of not less 300 is used as an antioxidant, an aliphatic hydrocarbon having not less than 19 carbon atoms (for example, microcrystalline wax) is used as a lubricant, and an alkylamine ethylene oxide adduct having a molecular weight of not less than 350 is used as an antistatic agent.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: February 9, 1999
    Assignee: Taisei Corporation
    Inventors: Sadao Kobayashi, Masayuki Imafuku, Yoshihide Wakayama
  • Patent number: 5852091
    Abstract: Disclosed is a solvent-based cement for bonding joints of polyvinyl chloride pipe and fittings. The cement of the composition contains at least about 10% by weight of a polyvinyl chloride resin, at least about 2% by weight of a solid alcohol having a melting point above at least about 20.degree. C., and at least about 10% by weight of a solvent or a mixture of solvents. There is also provided a method of joining two pieces of thermoplastic material, such a poly(vinyl chloride) piping and fittings, and the product piece having one or more joints formed thereby.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: December 22, 1998
    Assignee: BASF Corporation
    Inventors: Mark W. Waldrop, William C. Walsh
  • Patent number: 5432225
    Abstract: A thermotropic resin composition containing (A) 100 parts by weight of a thermotropic polyester, a thermotropic polyesteramide or a mixture thereof, forming an anisotropic molten phase and (B) 1 to 200 parts by weight of a graphite having a fixed carbon content of 98% or more, a crystallinity of 80 to 95%, and an average particle size of 1 to 200 .mu.m.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: July 11, 1995
    Assignee: Toray Industries, Inc.
    Inventors: Kiyokazu Nakamura, Noriaki Goto, Toshihide Inoue
  • Patent number: 5364929
    Abstract: Disclosed herein is a process for dissolving high melting polymers containing tetrafluoroethylene units at pressures greater than autogenous pressure, using selected halogenated solvents that are often not solvents at autogenous pressure. Also disclosed are the solutions resulting from this process. The solutions are useful for preparing fibers and paper-like webs from these polymers.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: November 15, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gregory T. Dee, William H. Tuminello
  • Patent number: 5252634
    Abstract: A low volatile organic compound emitting thermoplastic pipe adhesive includes a resin, one or more solvents, a low specific gravity filler such as hollow ceramic spheres and a thixotropic agent for maintaining the homogeneity of the adhesive mixture.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: October 12, 1993
    Inventors: Naresh D. Patel, Mark W. Brown
  • Patent number: 5112897
    Abstract: Effective amounts of low molecular weight brominated polystyrenes unexpectedly provide good property retention and yet achieve desired flame retardance, for example, UL-94 VO in high impact polystyrene. In contrast, high molecular weight brominated styrene polymers (degree of polymerization equals 2,000) do not provide good property retention such as impact strength and toughness in high impact polystyrene. The degree of polymerization of the brominated polystyrenes of the present invention is generally from about 3 to about 20 and can have a considerable variation in the amount of halogenation. The high impact polystyrenes blended with the low molecular weight brominated polystyrenes are readily processed by conventional equipment.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: May 12, 1992
    Assignee: Ferro Corporation
    Inventors: James L. Dever, James C. Gill
  • Patent number: 5112892
    Abstract: A polymer solution contains a sulphonated polyarylethersulphone in a solvent mixture containing at least three components, where the solvent mixture has a delta-H in the range from 3 to 8.5; a delta-P in the range from 4 to 8 and a delta-D in the range 7.2 to 9.5 and each component of the solvent mixture is a liquid or low melting solid which is a non-solvent or poor solvent for the sulphonated polyarylethersulphone, and at least one of the components satisfies at least one of the conditions:a) said component has a delta-D of less than 8 when the value of delta-P is not more than 3; andb) said component has a delta-H of greater than 3 when the value of delta-P is at least 8.5; andc) said component has a delta-H of less than 8 when it contains at least one hydroxylic group; andd) said component is free of hydroxylic groups and has a delta-P which is greater than 3 and less than 8.5.The solution can be used for the production of membranes suitable for use in reverse osmosis applications.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: May 12, 1992
    Assignee: Imperial Chemical Industries plc
    Inventors: Peter T. Cardew, David R. Holmes, John W. Smith
  • Patent number: 5064916
    Abstract: A curable organopolysiloxane composition comprising an organopolysiloxane gum having higher alkenyl groups, an organohydrogenpolysiloxane crosslinker, a solvent, a platinum group metal-containing catalyst and an inhibitor therefor provides for the formation of a tough, cured release film.When this composition is coated on the surface of any of various types of substrates, for example, paper, synthetic resin films, fibers, etc., and then heated for 10 to 20 seconds at 80 to 90 degrees Centigrade, it forms a cured film which manifests an extremely stable release performance for tacky substances, such as, for example, pressure-sensitive adhesives, and the like, while at the same time evidencing an excellent adherence to the substrate itself.The compositions can be used with synthetic resin films, such as polyolefin, which are easily deformed by heat and with poorly heat-tolerant paper.
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: November 12, 1991
    Assignee: Toray Silicone Company, Ltd.
    Inventors: Shosaku Sasaki, Hiroshi Masaoka
  • Patent number: 4960817
    Abstract: A coating for metallic substrates is disclosed which provides corrosion pection thereto and is thermally stable at high temperatures. It comprises a binder formed from a blend of a silicone resin and a silicone alkyd co-polymer resin, a sacrificial anodic particle pigment such as zinc dust for providing chemical protection against corrosion, a leafing pigment such as leafing aluminum for providing barrier protection against corrosion, and solvents.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: October 2, 1990
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Stephen J. Spadafora
  • Patent number: 4939180
    Abstract: A process for producing a composite membrance in which a sulphonated polymer is appled to the surface of a porous substrate, treating the polymer, in situ, on the substrate with cations of a polyvalent metal and converting the treated coating into a water insoluble layer on the support. The polyvalent metal may preferably by aluminum or chromium.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: July 3, 1990
    Assignee: Imperial Chemical Industries PLC
    Inventor: Brian N. Hendy
  • Patent number: 4929405
    Abstract: Disclosed herein are free-standing, pinhole-free, ultrathin polymide films having thicknesses of about 400 angstroms or less and a process to prepare them. The films find particular utility in separatory applications.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: May 29, 1990
    Assignee: Hoechst Celanese Corp.
    Inventor: Rachel S. Kohn
  • Patent number: 4910082
    Abstract: Disclosed herein are free-standing, pinhole-free, ultrathin, polyphenylene oxide films having thicknesses of about 400 angstroms or less and a process for preparing them. The films find particular utility in separatory applications.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: March 20, 1990
    Assignee: Hoechst Celanese Corp.
    Inventor: Rachel S. Kohn
  • Patent number: 4908267
    Abstract: Disclosed herein are free-standing, pinhole-free, ultrathin polyether sulfone films having thicknesses of about 400 angstroms or less and a process for preparing them. The films find particular utility in separatory applications.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: March 13, 1990
    Assignee: Hoechst Celanese Corp.
    Inventor: Rachel S. Kohn
  • Patent number: 4866099
    Abstract: A sulphonated aromatic polymer containing repeating units (Ar-Y) (where Y is SO.sub.2 and/or CO), where at least half of groups Ar contain a group SO.sub.3 M and M is l/m of a polyvalent metal cation in at least 80% of such groups SO.sub.3 M, and where m is the valency of the ion. The polyvalent cation compound is formed by heating the corresponding sulphonic acid or monovalent cation compound with a salt of a polyvalent metal. The polymer is useful as a membrane and the polyvalent metal salt addition and/or the heat treatment may be applied to polymer in membrane form.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: September 12, 1989
    Assignee: Imperial Chemical Industries PLC
    Inventor: Brian Hendy
  • Patent number: 4786531
    Abstract: A deep penetrating sealer composition which renders the treated surface resistant to water, metal ions and chloride ion penetration comprising a mixture of (1) an aromatic solvent, (2) a chlorinated solvent, (3) an aliphatic hydrocarbon solvent, and (3) a hydroxy-substituted polyorganosiloxane.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: November 22, 1988
    Inventor: James V. Hodson
  • Patent number: 4761443
    Abstract: A method for molding high water, high resiliency (HR) polyurethane foam articles is disclosed wherein a silicone mold release composition is used to treat the surfaces of a mold. The composition imparts release characteristics to the mold which last through multiple molding cycles, allow recoating with said composition and allows the production of defect-free foam articles. The composition consists essentially of a high and a low molecular weight hydroxyl endblocked polydimethylsiloxane, a siloxane crosslinker having SiH functionality, a catalyst and an inert solvent.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: August 2, 1988
    Assignee: Dow Corning Corporaton
    Inventor: William J. Lopes
  • Patent number: 4758646
    Abstract: A bis (alkoxysilyl) polyether is produced and utilized as a fabric sizing agent.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: July 19, 1988
    Assignee: General Electric Company
    Inventors: William J. Raleigh, James E. Doin, Frank J. Traver
  • Patent number: 4746474
    Abstract: Disclosed herein are free-standing, pinhole-free, ultrathin polyimide films having thicknesses of about 400 angstroms or less and a process to prepare them. The films find particular utility in separatory applications.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: May 24, 1988
    Assignee: Hoechst Celanese Corporation
    Inventor: Rachel S. Kohn
  • Patent number: 4714725
    Abstract: Solutions of sulphonated polyaryletherketones in a solvent mixture of at least three liquids or low melting solids which are non-solvents or poor solvents for the polymer, can be used to produce asymmetric semi-permeable membranes. The polymer may be a polymer of(Ph.sup.1 --O--Ph.sup.2 --O--Ph.sup.1 --CO)and optionally(Ph.sup.1 --O--Ph.sup.1 --CO)and(Ph.sup.1 --O--Ph.sup.1 --O--Ph.sup.1 --CO)wherein Ph.sup.1 and Ph.sup.2 are respectively unsulphonated and sulphonated phenylene residues. The components of the solvent mixture have specified solubility parameters. A suitable solvent mixture is one formed from water, 1,4-dioxane and acetonitrile.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: December 22, 1987
    Assignee: Imperial Chemical Industries PLC
    Inventors: Brian N. Hendy, John W. Smith
  • Patent number: 4563232
    Abstract: Improved heat resistant reinforced composites, including laminates, are made by impregnating reinforcing fabrics and tapes, e.g., graphite, glass, polyaramide and boron, with thermoplastic polyimides from solution in mixtures of specified solvents formulated to retard rapid evaporation and to insure high resin loading, good fiber wetting and the absence of distortion.
    Type: Grant
    Filed: October 24, 1984
    Date of Patent: January 7, 1986
    Assignee: American Cyanamid Co.
    Inventor: Steven L. Peake
  • Patent number: 4530880
    Abstract: A granular flame retardant additive is provided comprising from 70 to 99.5% by weight of an organohalide flame retardant and from 0.5 to 30% by weight of thermoplastic synthetic resin as a binder. The additive is easy to handle and resistant to disintegration during transportation and mixing with fabricating resin pellets. Uniform distribution thereof in fabricated thermoplastic articles is achieved by simply co-feeding the granules and the fabricating resin to a fabricating machine.
    Type: Grant
    Filed: January 27, 1984
    Date of Patent: July 23, 1985
    Assignees: Sekisui Kaseihin Kogyo Kabushiki Kaisha, Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Akira Taniuchi, Setsuo Nishibori, Hirohito Komori, Motoshige Hayashi
  • Patent number: 4493918
    Abstract: Silicate filled polyolefin resin composites exhibit improved mechanical properties if the silicate filler and polyolefin resin are specially combined with additives comprising chlorinated aliphatic compounds. The composites are preferably made from blends comprising about 1-36 parts by weight silicate flakes or fibers, 9 parts by weight propylene resin and minor effective amounts of the additive. Various processing techniques such as selecting the time the blends reside at melt temperatures during compounding permits development of advantageous properties.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: January 15, 1985
    Assignee: Ford Motor Company
    Inventors: Fred J. Meyer, Seymour Newman
  • Patent number: 4474924
    Abstract: Polymerization slurries of elastomeric isoolefin homopolymers and copolymers, such as butyl rubber, in diluents such as methyl chloride are effectively stabilized against agglomeration of polymer particles through addition of minor proportions of an hydrogenated preformed copolymer stabilizer having both a lyophobic and a lyophilic portion. The chemical and structural nature of the lyophobic and lyophilic portions which comprise the copolymer stabilizer are significant in determining the extent and method of hydrogenation for production of the most effective stabilizer. Agglomeration of polymer products is effectively prevented, yielding a number of significant processing advantages. The process is especially adaptable to the production of isobutylene-isoprene butyl rubber.
    Type: Grant
    Filed: January 27, 1983
    Date of Patent: October 2, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Kenneth W. Powers, Hsien C. Wang
  • Patent number: 4467077
    Abstract: Mica filled polyolefin resin composites exhibit improved mechanical properties if the mica filler and polyolefin resin are specially combined with additives comprising chlorinated aliphatic compounds. The composites are preferably made from blends comprising about 1-36 parts by weight mica flakes (especially phlogopite mica), 9 parts by weight propylene resin and minor effective amounts of the additive. Various processing techniques such as selecting the time the blends reside at melt temperatures during compounding permits development of advantageous properties.
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: August 21, 1984
    Assignee: Ford Motor Company
    Inventors: Fred J. Meyer, Seymour Newman
  • Patent number: 4446272
    Abstract: A resin composition having nice color tone and high crack-resistance as well as flame-retardancy is obtained by blending(A) 100 weight parts of a resin composition containing a rubber-reinforced vinyl aromatic polymer and polyphenylene ether represented by the following general formula: ##STR1## wherein each of R.sub.1 and R.sub.2 represents a monovalent residue such as the same or different alkyl group having 1-4 carbon atoms, aryl group, halogen and hydrogen, and n represents the polymerization degree or a polyphenylene ether onto which a vinyl aromatic compound is graft-copolymerized, in which the polyphenylene ether content is 5-70 wt. % (based on the weight of the resin part),(B) 1-30 weight parts of a halogenated aromatic compound and(C) 0.5-20 weight parts of a non-crystalline ethylene-propylene copolymer.
    Type: Grant
    Filed: September 10, 1981
    Date of Patent: May 1, 1984
    Assignee: Asahi-Dow Limited
    Inventors: Kunio Fukuda, Kichiya Tazaki, Akihisa Takano, Yuji Kusumi