Inorganic Sulfur Compound Contains Sulfur Atom Bonded To At Least Two Oxygen Atoms Patents (Class 525/344)
-
Patent number: 6362284Abstract: Protected, functionalized heterotelechelic polymers, hydrogenated and/or deprotected analogues thereof, and processes to prepare these polymers. Monomers are polymerized using a protected functionalized initiator to form a living polymer, and the living polymer is reacted with an electrophile to form heterotelechelic polymers.Type: GrantFiled: November 19, 1998Date of Patent: March 26, 2002Assignee: FMC CorporationInventors: James Anthony Schwindeman, Roderic Paul Quirk, Conrad William Kamienski
-
Publication number: 20020035215Abstract: The present invention is directed to a highly active condensation catalyst suitable for the crosslinking of alkoxysilanyl polyolefins, e.g.Type: ApplicationFiled: July 19, 2001Publication date: March 21, 2002Inventors: Werner J. Blank, Edward T. Hessell, Richard A. Abramshe
-
Patent number: 6350818Abstract: The present invention relates to organic anti-reflective coating polymers and preparation methods therefor. Anti-reflective coatings are used in a semiconductor device during photolithography processes to prevent the reflection of light from lower layers of the device, or resulting from changes in the thickness of the photoresist layer, and to eliminate the standing wave effect when ArF light is used. The present invention also relates to anti-reflective compositions and coatings containing these organic anti-reflective coating polymers, alone or in combination with certain light-absorbing compounds, and preparation methods therefor.Type: GrantFiled: October 7, 1999Date of Patent: February 26, 2002Assignee: Hyundai Electronics Industries Co., Ltd.Inventors: Sung-Eun Hong, Min-Ho Jung, Hyeong-Soo Kim, Ki-Ho Baik
-
Publication number: 20020019492Abstract: Disclosed is a two-step method of making soft, high refractive index, acrylic ophthalmic device materials.Type: ApplicationFiled: September 17, 2001Publication date: February 14, 2002Inventor: Albert R. LeBoeuf
-
Publication number: 20020016419Abstract: A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.Type: ApplicationFiled: August 25, 1999Publication date: February 7, 2002Inventors: YASUHITO INAGAKI, TSUTOMU NOGUCHI, HARUO WATANABE, MIYUKI KUROMIYA
-
Publication number: 20020002240Abstract: The present invention is concerned with cross-linked sulfonated polymers, eventually perfluorinated, and their preparation process. When molded in the form of membranes, the polymers are useful in electrochemical cells, in a chlorine-sodium electrolysis process, as separator in an electrochemical preparation or organic and inorganic compounds, as separators between an aqueous phase and an organic phase, or as catalyst for Diels-Alder additions, Friedel-Craft reactions, aldol concentrations, cationic polymerisation, esterification, and acetal formation.Type: ApplicationFiled: July 18, 2001Publication date: January 3, 2002Inventors: Christophe Michot, Michel Armand
-
Publication number: 20010051145Abstract: What is claimed are copolymers consisting essentially of from 1 to 90% by weight of the repetitive structural unit of the formula (1) 1Type: ApplicationFiled: February 15, 2001Publication date: December 13, 2001Inventors: Ralf Zerrer, Rainer Kupfer
-
Patent number: 6313231Abstract: A superabsorbent resin composition comprising the following components (A), (B) and (C), wherein (A) is a superabsorbent resin, (B) is a metal compound containing at least one metal A selected from the group consisting of titanium and zirconium and (C) is a chelating agent.Type: GrantFiled: July 2, 1998Date of Patent: November 6, 2001Assignee: Kao CorporationInventors: Yasunori Hosokawa, Tadashi Igarashi, Isao Tsuru, Yoko Hanada
-
Patent number: 6297304Abstract: Fluorinated diesters useful for imparting repellency of low surface tension fluids to thermoplastic polymers of formulae Rf—O—C(O)—(CH2)n—C(O)—O—R1; Rf—O—C(O)—CH2—CH(R2)—C(O)—O—Rf; a mixture of Rf—O—C(O)—(CH2)n—C(O)—O—R1, Rf—O—C(O)—(CH2)n—C(O)—Rf, and R1—O—C(O)—(CH2)n—C(O)—O—R1; and [F(CF2)xCH2CH2—S—CH2]2—C—[CH2—O—C(O)—C17H35]2; wherein Rf is F(CF2)x—(CH2)m wherein x is 4 to 20 and m is 2 to 6, or F(CF2)x—SO2N(R3)—R4 wherein x is 4 to 20; R1 is a saturated aliphatic hydrocarbon with an average carbon chain length of 12 to 66 carbons; R2 is a saturated or unsaturated hydrocarbon with 1-20 carbon atoms; R3 is an alkyl radical having 1 to 4 carbon atoms; R4 is an alkylene radical having 1 to 12 carbon atoms; n is 1 to 20, and x is 4 to 20 are discloseType: GrantFiled: June 21, 1999Date of Patent: October 2, 2001Assignee: E. I. du Pont de Nemours and CompanyInventors: Kimberly Gheysen Raiford, Theodor Arthur Liss, Edward James Greenwood, Jack Robert Kirchner
-
Patent number: 6274681Abstract: A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.Type: GrantFiled: August 25, 1999Date of Patent: August 14, 2001Assignee: Sony CoporationInventors: Yasuhito Inagaki, Tsutomu Noguchi, Haruo Watanabe, Miyuki Kuromiya
-
Patent number: 6274689Abstract: The invention provides a copolymer of an isomonoolefin having from 4 to 7 carbon atoms and containing a copolymerized alkenyl styrene moiety represented by the formula I: where m=0-2, n=0-20, each of R1 through R7 are independently selected from the group consisting of hydrogen, C1 to C10 alkyl and C1 to C10 primary or secondary alkyl halides, and at least one of R1, R2 or R3 is hydrogen, and when m=1 or 2, R3 and R1 are —CH2—.Type: GrantFiled: October 7, 1998Date of Patent: August 14, 2001Assignee: Exxon Chemical Patents, Inc.Inventors: Timothy Daniel Shaffer, David Yen-Lung Chung
-
Patent number: 6248841Abstract: A novel process has been developed for the treatment of crosslinked ethylene-propylene diene monomer (EPDM) elastomer material to decrease its residual peroxide levels. EPDM is used to form the seats and neck gaskets of metering valves used in metered-dose inhalers (MDI). For filled and inverted MDI units these EPDM components are in direct contact with the pharmaceutical formulation media. The process involves exposing the EPDM valve components to a solution of 2-mercaptoethanol, a chemical reducing agent. The 2-mercaptoethanol greatly diminishes the residual peroxide levels in EPDM by reducing the peroxide functional groups to the corresponding hydroxyl groups. EPDM components treated in this manner have demonstrated very low peroxide levels and, consequently, greatly improved compatibility with the pharmaceutical formulation in the inhaler. An advantage of this approach is that the treated EPDM would likely retain its favorable physical properties and its good performance in metering valves.Type: GrantFiled: September 30, 1999Date of Patent: June 19, 2001Assignee: Aventis Pharmaceuticals Products Inc.Inventors: Karl M. Gelotte, Joseph D'Silva
-
Patent number: 6245862Abstract: The present invention relates to a golf ball, comprising a cover, a core and optional intermediate layers, wherein the various ball components are formed from compositions comprising a sulfonated and/or phosphonated ionomer. The sulfonated and/or phosphonated ionomer preferably comprises sulfonated thermoplastic elastomers, sulfonated thermoplastic polymers, sulfonated thermoset polymers and mixtures thereof. The compositions include a blend of about 1 wt. % to about 99 wt. % of at least one sulfonated and/or phosphonated ionomer and about 99 wt. % to about 1 wt. % of at least co-component polymer. The co-component polymer may be a conventional ionomer, a thermoplastic, a thermoplastic elastomer, a thermoset polymer or mixtures thereof.Type: GrantFiled: May 28, 1998Date of Patent: June 12, 2001Assignee: Acushnet CompanyInventor: Murali Rajagopalan
-
Patent number: 6235802Abstract: A process for the preparation of high surface area, low-swelling macroporous polymeric adsorbents is disclosed. The use of organic sulfonic acids to provide postcrosslinking of macroporous copolymers eliminates the need for traditional organic swelling solvents and Lewis-acid catalysts used to provide conventional macronetted polymers. In particular, methanesulfonic acid provides macroporous polymeric adsorbents having high surface area and porosity, low levels of residual vinyl groups, and free of residual contaminants from conventional Lewis-acid/Friedel-Crafts reactions.Type: GrantFiled: August 10, 2000Date of Patent: May 22, 2001Assignee: Rohm and Haas CompanyInventors: Eric Gustave Lundquist, Eric Jon Langenmayr
-
Patent number: 6228896Abstract: The invention relates to a process for the preparation of mechanically and osmotically stable, high-capacity strongly acidic cation exchangers having a particle size of ≧0.1 mm by sulphonation of gel-like or porous bead polymers with sulphuric acid without the use of inert chlorine-containing swelling agents and/or of comonomers based on acrylonitrile. According to the invention, such strongly acidic cation exchangers can be prepared by sulphonation of gel-like and porous bead polymers, prepared by copolymerization of styrene and divinylbenzene having a crosslinker content of up to 65% by weight of divinylbenzene with and without inert composition, with 80-96% strength sulphuric acid at temperatures of 125-180° C. and a reaction time of up to 20 h.Type: GrantFiled: June 17, 1998Date of Patent: May 8, 2001Assignee: IAB Ionennaustauscher GmbH BitterfeldInventors: Reinhard Bachmann, Lothar Feistel, RĂ¼diger Seidel, Karl-Heinz Siekiera
-
Patent number: 6174928Abstract: A fluorinated oligomer having COOH groups at both end and a &rgr;50° value of 1,000 to 10,000 is produced by swelling a fluorine rubber crosslinking product in an organic solvent, followed by decomposition in the presence of a base and a peroxide. The obtained fluorinated oligomer is soluble in solvent and thus easy to separate from fillers, etc., and can be effectively used as a chain-elongating agent for epoxy resin, isocyanate resin, oxazoline resin, etc.Type: GrantFiled: March 26, 1999Date of Patent: January 16, 2001Assignee: Nippon Mektron, LimitedInventors: Fumiyo Mizuide, Haruyoshi Tatsu, Sergey Vasilievich Sokolov, Michail Vasiliyevich Zhuravlev, Igor Vladimirovich Kokotin, Olga Viktorinovna Blagodatova
-
Patent number: 6147127Abstract: A process for the preparation of high surface area, low-swelling macroporous polymeric adsorbents is disclosed. The use of organic sulfonic acids to provide postcrosslinking of macroporous copolymers eliminates the need for traditional organic swelling solvents and Lewis-acid catalysts used to provide conventional macronetted polymers. In particular, methanesulfonic acid provides macroporous polymeric adsorbents having high surface area and porosity, low levels of residual vinyl groups, and free of residual contaminants from conventional Lewis-acid/Friedel-Crafts reactions.Type: GrantFiled: December 17, 1999Date of Patent: November 14, 2000Assignee: Rohm and Haas CompanyInventors: Eric Gustave Lundquist, Eric Jon Langenmayr
-
Patent number: 6107414Abstract: Protected, functionalized heterotelechelic polymers, hydrogenated and/or deprotected analogues thereof, and processes to prepare these polymers. Monomers are polymerized using a protected functionalized initiator to form a living polymer, and the living polymer is reacted with an electrophile to form heterotelechelic polymers.Type: GrantFiled: November 19, 1998Date of Patent: August 22, 2000Assignee: FMC CorporationInventors: James Anthony Schwindeman, Roderic Paul Quirk, Conrad William Kamienski, deceased
-
Patent number: 6077914Abstract: The molecular weight of a polyolefin such as polypropylene is reduced, as evidenced by lowered viscosity and increased melt flow rate, by treatment with an inorganic peroxygen selected from metal persulfates, ammonium persulfates, and any mixtures thereof. The treatment avoids or minimizes the color or odor attendant treatment with organic peroxygens and the toxic products of organic persulfate decomposition, and avoids the special handling required with organic peroxides.Type: GrantFiled: February 19, 1998Date of Patent: June 20, 2000Assignee: FMC CorporationInventors: Nancy D. Arabinick, John L. Burba, III, William O. Dalton
-
Patent number: 6022928Abstract: A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.Type: GrantFiled: July 7, 1997Date of Patent: February 8, 2000Assignee: Sony CorporationInventors: Yasuhito Inagaki, Tsutomu Noguchi, Haruo Watanabe, Miyuki Kuromiya
-
Patent number: 6018001Abstract: A process for producing a contact lens having a hydrophilic surface comprising subjecting a contact lens material comprising a copolymer prepared by copolymerizing a monomer mixture containing a polymerizable monomer (A) which is at least one member selected from a sugar ketal-containing (meth)acrylate and a sugar glycerol ketal-containing (meth)acrylate, and a polymerizable monomer (B) which is copolymerizable with the polymerizable monomer (A) to acid treatment, wherein the polymerizable monomer (B) contains a hydrophobic monomer which is at least one member selected from a silicon-containing monomer, a fluorine-containing monomer and a silicon- and fluorine-containing monomer, and a contact lens which has high oxygen permeability and of which surface shows stably excellent hydrophilic property and which is excellent in deposit resistance at the same time.Type: GrantFiled: September 23, 1998Date of Patent: January 25, 2000Assignee: Menicon Co., Ltd.Inventors: Haruyuki Hiratani, Tatsutoshi Nakajima
-
Patent number: 5976696Abstract: Shell/core distortion-resistant particulates of a partially crosslinked superabsorbent polymer, the gradient of partial crosslinking of which being to such extent that the shells are harder and less flexible than the cores thereof, have a capacity to absorb 0.9% saline water of at least 50 g/g and the modulus of which is at least 35,000 Pa; a bed of a saline water gel of the subject particulates has a saline water absorption of at least 20 g/g and a porosity of at least 500 g.Type: GrantFiled: February 7, 1997Date of Patent: November 2, 1999Assignee: Elf Atochem, S.A.Inventors: Christian Collette, Manuel Hidalgo, Andre Kowalik, Emmanuel Puchois
-
Patent number: 5891956Abstract: Water-soluble polymers including functionalization from the group of amino groups, carboxylic acid groups, phosphonic acid groups, phosphonic ester groups, acylpyrazolone groups, hydroxamic acid groups, aza crown ether groups, oxy crown ethers groups, guanidinium groups, amide groups, ester groups, aminodicarboxylic groups, permethylated polyvinylpyridine groups, permethylated amine groups, mercaptosuccinic acid groups, alkyl thiol groups, and N-alkylthiourea groups are disclosed.Type: GrantFiled: May 30, 1995Date of Patent: April 6, 1999Assignee: The Regents of the University of California, Office of Technology TransferInventors: Barbara F. Smith, Thomas W. Robison, Joel W. Gohdes
-
Patent number: 5834525Abstract: The present invention concerns the synthesis of several biomimetically important polymer-supported, sulfonated catechol (PS-CATS), sulfonated bis-catechol linear amide (PS-2-6-LICAMS) and sulfonated 3,3-linear tris-catechol amide (PS-3,3-LICAMS) ligands, which chemically bond to modified 6% crosslinked macroporous polystyrene-divinylbenzene beads (PS-DVB). These polymers are useful for the for selective removal and recovery of environmentally and economically important metal ions from aqueous solution, as a function of pH. The Fe.sup.3+ ion selectivity shown for PS-CATS, PS-2-6-LICAMS, and PS-3,3-LICAMS polymer beads in competition with a similar concentration of Cu.sup.2+, Zn.sup.2+, Mn.sup.2+, Ni.sup.2+, Mg.sup.2+, Al.sup.3+, and Cr.sup.3+ ions at pH 1-3. Further, the metal ion selectivity is changed at higher pH values in the absence of Fe.sup.3+ (for example, Hg.sup.2+ at pH 3). The rates of selective removal and recovery of the trivalent metal ions, e.g. Fe.sup.3+ Al.sup.3+ ion etc.Type: GrantFiled: April 17, 1997Date of Patent: November 10, 1998Assignee: The Regents of the University of CaliforniaInventor: Richard H. Fish
-
Patent number: 5753775Abstract: Sulfonated and oxidized indene polymers obtainable by(a) polymerization of indene or indene derivatives of the general formula I ##STR1## where R.sup.1 is hydrogen, methyl or ethyl and n is 1 or 2, or of mixtures which contain the compounds I as well as other copolymerizable and/or non-polymerizable organic compounds in an amount of at least 10% by weight,b) sulfonation of the polymer with a sulfonating agent at from 40.degree. to 130.degree. C., andc) non-chain-degrading oxidation of the polymer at from 80.degree. to 180.degree. C.These indene polymers are suitable for use as dispersants for example in dye and pigment preparations.Type: GrantFiled: January 31, 1996Date of Patent: May 19, 1998Assignee: BASF AktiengesellschaftInventors: Eberhard Beckmann, Stefan Erren, Ulf Baus, Norbert Zimmermann, Erich Kromm, Klaus Taeger, Eva-Marie Borschel, Willi Bury
-
Patent number: 5723550Abstract: EPDM elastomer is sulfonated and neutralized by a bulk process involving mechanical mixing at low temperatures in the sulfonating and neutralizing steps. The EPDM is discharged from the mixing process as finely divided particles having a low bulk density.Type: GrantFiled: May 24, 1995Date of Patent: March 3, 1998Assignee: Nalco/Exxon Energy Chemicals, L.P.Inventors: Cruise K. Jones, David B. Acker, Dennis A. Williams, Robert D. Lundberg, Vijay Swarup
-
Patent number: 5721279Abstract: Cation exchange resins are prepared by sulfonating copolymer beads in the presence of a swelling solvent under pressure. Pressure sulfonation shortens cycle times and requires less energy while maintaining or improving product quality.Type: GrantFiled: January 27, 1997Date of Patent: February 24, 1998Assignee: The Dow Chemical CompanyInventors: Kenneth L. Foster, Natalie N. Westphal, Suresh Subramonian
-
Patent number: 5717026Abstract: A polyvinyl alcohol-based fiber having a gel elastic modulus of 0.05.times.10.sup.-3 to 8.0.times.10.sup.-3 g/cm.multidot.dr, a hot water shrinkage (Wsr) of 10% or higher, and a strength of 3 g/d or higher.Type: GrantFiled: May 22, 1996Date of Patent: February 10, 1998Assignee: Kuraray Co., Ltd.Inventors: Toshiaki Ikimine, Isao Sakuragi, Juniti Yoshinaka
-
Patent number: 5696193Abstract: A dry immunoassay analytical element, for assaying a ligand, comprising in the following order:(a) a layer containing a labeled ligand;(b) a spreading layer;(c) a receptor layer containing a fixed concentration of an immobilized receptor for the labeled ligand and the receptor is i) covalently bonded to polymeric beads having a diameter in the range of 0.1 to 5 .mu.m and ii) dispersed in a polymeric binder and(d) a support;characterized in that the spreading layer contains a water soluble polymer containing vanadium IV (V.sup.+4) ions.Type: GrantFiled: April 25, 1994Date of Patent: December 9, 1997Assignee: Clinical Diagnostic Systems, Inc.Inventors: Daniel Salman Daniel, David Alan Hilborn, Calvin Roman Messing, Ignazio Salvatore Ponticello, Susan Jean Danielson
-
Patent number: 5677389Abstract: Curable perfluoroelastomer compositions are provided which comprises a perfluoroelastomer, a curative, and an organic or inorganic ammonium salt which decomposes between 120.degree.-225.degree. C.Type: GrantFiled: November 25, 1996Date of Patent: October 14, 1997Assignee: E. I. Du Pont de NemoursInventors: Anestis Leonidas Logothetis, Walter Werner Schmiegel
-
Patent number: 5668220Abstract: Chlorinated and chlorosulfonated polyethylenes are produced by chlorinating substantially linear olefin polymers having a melt flow ratio, I.sub.10 /I.sub.2, .gtoreq.5.63, a molecular weight distribution, M.sub.w /M.sub.n, defined by the equation: M.sub.w /M.sub.n .gtoreq.(I.sub.10 /I.sub.2)-4.63, a critical shear rate at onset of gross melt fracture of at least 50 percent greater than the critical shear rate at the onset of surface melt fracture of a linear olefin polymer having about the same I.sub.2 and Mw/Mn and at least about 0.01 long chain branches/1000 carbons and a molecular weight distribution from about 1.5 to about 2.5 and their method of manufacture are disclosed. The chlorosulfonated polyethylenes are produced by treating the chlorinated polyethylenes with a mixture of gaseous chlorine and sulfur dioxide.Type: GrantFiled: July 19, 1996Date of Patent: September 16, 1997Assignee: The Dow Chemical CompanyInventors: Lawrence J. Effler, Jr., George D. Wright, Mark T. Berard
-
Patent number: 5668233Abstract: Disclosed herein are partially fluorinated (co)polymers containing sulfonic acid or sulfonate salt groups, processes for making those polymers, and intermediates for those (co)polymers. The (co)polymers are useful as ion-exchange resins and (in the sulfonic acid form) acid catalysts.Type: GrantFiled: May 23, 1996Date of Patent: September 16, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventors: Andrew Edward Feiring, Shlomo Rozen
-
Patent number: 5663250Abstract: Protected functional initiator initiated elastomer solutions are deprotected and optionally ionic impurities removed by contact with a molten component such as sodium bisulphate monohydrate. This allows deprotection and removal of metal contaminants such as the initiator or residue from hydrogenation catalysts without the introduction of significant amounts of additional water which cause emulsion formation. In accordance with this invention, better metal removal is achieved and the process of metal removal operates more smoothly because of the absence of emulsion formation. Separation of the molten component containing the extracted metal contaminants can easily be carried out by simple liquid-liquid phase separation on either a continuous or batch basis.Type: GrantFiled: May 16, 1996Date of Patent: September 2, 1997Assignee: Shell Oil CompanyInventors: Michael Wayne Potter, William Charles Malven, Cary Alan Veith
-
Patent number: 5637627Abstract: A method for producing a spherical crosslinked copolymer, which comprises polymerizing a monofunctional addition-polymerizable monomer and at least 0.5% by weight of a polyfunctional addition-polymerizable monomer on the basis of the total weight of monomers by suspension polymerization in an aqueous medium in the presence of a radical polymerization initiator of the following formula (b) which has a decomposition temperature for a half-life period of 10 hours within a range of from 60.degree. to 120.degree. C. and which is capable of forming at least four radical initiating points per molecule by the decomposition:(R.sub.4 --O--O.paren close-st..sub.m R.sub.5 (b)wherein R.sub.4 is a linear or branched C.sub.1-10 alkyl group, R.sub.5 is a m-valent C.sub.4-25 hydrocarbon group, and m is an integer of at least 2, wherein the plurality of R.sub.4 per molecule may be the same or different.Type: GrantFiled: February 20, 1996Date of Patent: June 10, 1997Assignee: Mitsubishi Chemical CorporationInventors: Junya Watanabe, Tsunehiko Kurata
-
Patent number: 5631327Abstract: Aminated polymers capable of reversibly complexing carbon dioxide and other acid gases including CO.sub.2, SO.sub.2, NO.sub.x and H.sub.2 S, a method of using such polymers and an operational unit including such polymers are disclosed. The polymers incorporate amine group which reversibly complex acid gases. Such polymers provide a significant advantages over presently used sorbents used to remove acid gas.Type: GrantFiled: September 12, 1995Date of Patent: May 20, 1997Assignee: University of PittsburghInventor: Eric J. Beckman
-
Patent number: 5622997Abstract: A moulded ion exchange resin structure suitable for use in reactive distillation is prepared by compressing particles of an ion exchange resin precursor having chemically reactive functional groups on their surfaces, into a preform having a predetermined shape, subsequently chemically bonding the particles together by reaction of the functional groups for example by acid-catalysed condensation and converting the precursor to an ion exchange resin, for example by sulphonation.Type: GrantFiled: June 6, 1995Date of Patent: April 22, 1997Assignees: BP Chemicals Limited, The British Petroleum Co., p.l.c.Inventors: Stephen R. Tennison, Richard H. Weatherhead
-
Patent number: 5616153Abstract: A novel copolymer of an unsaturated acidic reactant and an atactic vinyl terminated propene polymer (VTPP) and its use in preparation of fuel and lubricant additives is taught. The VTPP has a major amount of polymer chains containing terminal vinyl unsaturation, a number average molecular weight of at least 500, and comprises at least 70 weight per cent propene and 0 to 30 weight per cent of at least one olefin selected from the group consisting of C.sub.2 and C.sub.4 to C.sub.10 olefins. The unsaturated acidic reactant comprises at least one unsaturated C.sub.4 to C.sub.10 carboxylic or dicarboxylic acid or anhydride. An oil soluble dispersant additive of the invention useful in oleaginous compositions is prepared by contacting the atactic VTPP copolymer with at least one nucleophilic reagent selected from the group consisting of amines, alcohols, metal reactants and mixtures thereof under conditions effective to form adducts of the nucleophilic reagent with the copolymer.Type: GrantFiled: October 3, 1995Date of Patent: April 1, 1997Assignee: Ethyl CorporationInventors: Carl A. Mike, Joseph J. Valcho, Daniel Yuan-Fu Yu
-
Patent number: 5616622Abstract: Seeded cation-exchange resin beads are particularly susceptible to oxidative degradation which results in the leaching of organic carbon fragments. The leachability of organic carbon fragments of molecular weights greater than 1000 g/mol is reduced to less than 800 ppm by effectively crosslinking the copolymers that comprise the seeded cation-exchange resin beads. Crosslinking can be achieved either during sulfonation by increasing sulfone bridge formation or before sulfonation by either alkylene bridge formation or by incorporation and subsequent activation of a crosslinkable functionality in the copolymer that forms the seed in the seeded polymer bead process.Type: GrantFiled: October 27, 1994Date of Patent: April 1, 1997Assignee: The Dow Chemical CompanyInventors: William I. Harris, Robert L. Sammler
-
Patent number: 5616655Abstract: A method is disclosed for processing a rubber composition comprising thermomechanically mixing at a rubber temperature in a range of 140.degree. C. to 190.degree. C. for a mixing time of 1 to 20 minutes(i) 100 parts by weight of at least one sulfur vulcanizable elastomer selected from conjugated diene homopolymers and copolymers, natural rubber and copolymers of at least one conjugated diene and aromatic vinyl compound;(ii) 10 to 250 phr of particulate precipitated silica;(iii) 0.01 to 1.0 parts by weight per weight of said silica of an organosilicon compound; and(iv) 0.05 to 10 phr of sodium thiosulfate pentahydrate.Addition of the sodium thiosulfate pentahydrate to sulfur vulcanizable rubber, silica and sulfur containing organosilicon compound decreases the mixing/processing time without sacrificing end product properties.Type: GrantFiled: September 11, 1995Date of Patent: April 1, 1997Assignee: The Goodyear Tire & Rubber CompanyInventors: Richard M. D'Sidocky, David J. Zanzig, Shingo Futamura
-
Patent number: 5608011Abstract: The invention relates to water-dispersible or water-soluble polymer powder compositions which can be crosslinked or condensed by acid and comprisesI) one or more pulverulent water-dispersible or water-soluble copolymers which can be crosslinked or condensed by acid,II) one or more pulverulent water-dispersible or water-soluble compounds from the group consisting of alkali metal or ammonium peroxo acid salts, andIII) one or more pulverulent water-dispersible or water-soluble reducing agents.Type: GrantFiled: September 11, 1995Date of Patent: March 4, 1997Assignee: Wacker-Chemie GmbHInventors: Herbert Eck, Peter Ball, Hermann Lutz, Heinrich Hopf
-
Patent number: 5585408Abstract: Seeded cation-exchange resin beads are particularly susceptible to oxidative degradation which results in the leaching of organic carbon fragments. The leachability of organic carbon fragments of molecular weights greater than 1000 g/mol is reduced to less than 800 ppm by effectively crosslinking the copolymers that comprise the seeded cation-exchange in beads Crosslinking can be achieved either during sulfonation by increasing sulfone bridge formation or before sulfonation by either alkylene bridge formation or by incorporation and subsequent activation of a crosslinkable functionality in the copolymer that forms the seed in the seeded polymer bead process.Type: GrantFiled: June 7, 1995Date of Patent: December 17, 1996Assignee: The Dow Chemical CompanyInventors: William I. Harris, Robert L. Sammler
-
Patent number: 5580936Abstract: A partially tert-butoxylated poly(p-hydroxystyrene) is prepared by subjecting poly(p-tert-butoxystyrene) to reaction of eliminating some of the tert-butoxy groups in an organic solvent at a temperature of 30.degree.-100.degree. C. in the presence of an acid catalyst at a molar ratio of acid catalyst/t-BuO group of from 0.050 to 2.0. During the elimination reaction, a change of solubility of the resulting partially tert-butoxylated poly(p-hydroxystyrene) is determined to calculate a degree of elimination of tert-butoxy groups. The reaction is terminated when a desired degree of elimination is reached. Through a simple process, partially tert-butoxylated poly(p-hydroxystyrene) having a well controlled t-BuO content is produced in high yields.Type: GrantFiled: September 29, 1995Date of Patent: December 3, 1996Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Junji Tsuchiya, Katsuya Takemura, Osamu Watanabe, Yoshihumi Takeda, Toshinobu Ishihara
-
Patent number: 5516852Abstract: A method of preparing a high molecular weight water-soluble cationic copolymer by reacting in an aqueous solution at least one N-vinylamide and at least one cationic quaternary amine monomer in the presence of a free radical initiator and a salt of ethylenediamine tetraacetic acid and subjecting the formed polymer to an acid or base to form an N-vinylamide/N-vinylamine/cationic quaternary amine copolymer product.Type: GrantFiled: April 18, 1995Date of Patent: May 14, 1996Assignee: W. R. Grace & Co.-Conn.Inventors: Lawrence L. Kuo, Roger Y. Leung, Kenneth S. Williams
-
Patent number: 5470919Abstract: A chlorinated ethylene/.alpha.-olefin copolymer rubber which is a chlorinated product of an ethylene/.alpha.-olefin copolymer rubber having a vinylidene bond at the terminal of the molecule, the number of said vinylidene bond being 0.05 to 1.00 per 1,000 carbon atoms, which has a chlorine content of 20 to 40% by weight, and which has a Mooney viscosity [ML.sub.1+4 (121.degree. C.)] of 10 to 190; and a composition comprising the chlorinated ethylene/.alpha.-olefin copolymer rubber, (a) a reinforcing agent, (b) a softening agent, and (c) a vulcanizing agent.Type: GrantFiled: July 26, 1994Date of Patent: November 28, 1995Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Tetsuo Tojo, Muneyuki Matsumoto, Yoshiharu Kikuchi
-
Patent number: 5464908Abstract: Disclosed herein is a process for preparing a water-soluble polymer comprising subjecting an N-vinylcarboxylic acid amide alone or a mixture of the N-vinylcarboxylic acid amide and other water-soluble vinyl compound(s) copolymerizable therewith to suspension polymerization, and adding hydroxylamine followed by acidic hydrolysis. A water-soluble can be polymerized efficiently without forming gel.Type: GrantFiled: September 29, 1993Date of Patent: November 7, 1995Assignee: Mitsubishi Kasei CorporationInventors: Shin-ichi Sato, Kiyoji Kuma
-
Patent number: 5439980Abstract: A polymer comprising at least one polymer chain is produced by polymerizing, in the presence of a radical generating source and an iodide compound, at least one monomer M.sub.1 having a radically polymerizable unsaturated bond between a carbon atom and an iodine atom constituting a carbon-iodine bond of the iodide compound to form at least one polymer chain between the carbon atom and the iodine atom, wherein the polymerization reaction is carried out in the presence of a monomer M.sub.2 which is different from the monomer M.sub.1 and has a larger addition reactivity with a carbon radical which is generated by cleavage of the carbon-iodine bond of the iodine compound than that of the monomer M.sub.1.Type: GrantFiled: December 20, 1993Date of Patent: August 8, 1995Assignee: Daikin IndustriesInventors: Yuji Yutani, Masayoshi Tatemoto
-
Patent number: 5395897Abstract: The invention comprises a process for synthesizing a high molecular weight hydroxamic acid polymer and other substituted amides onto a polyacrylic acid or a polymethacrylic acid latex backbone by reacting a stable, inverse polyacrylic acid or polymethacrylic acid latex with hydroxylamine sulfate, in the case of hydroxamic acid, or other primary amines, to produce the high molecular weight substituted amides. The invention further comprises a method of clarifying Bayer process liquors using the substituted amides produced by the process.Type: GrantFiled: April 25, 1994Date of Patent: March 7, 1995Assignee: Nalco Chemical CompanyInventors: John R. Hurlock, Martha R. Finck
-
Patent number: 5369132Abstract: A method for producing an acrylonitrile crosslinked copolymer, which comprises copolymerizing, as polymerizable monomers, acrylonitrile, an alkyl ester of acrylic acid or methacrylic acid, an aliphatic or alicyclic crosslinkable unsaturated monomer having at least two allyl groups, and an aromatic crosslinkable polyunsaturated monomer, in the presence of from 10 to 45% by weight, based on the total amount of the polymerizable monomers, of an inert organic solvent having a specific gravity of at least 1.0.Type: GrantFiled: February 9, 1994Date of Patent: November 29, 1994Assignee: Mitsubishi Kasei CorporationInventors: Tsuyoshi Ito, Junya Watanabe, Shintaro Sawada
-
Patent number: RE34903Abstract: Disclosed herein is a vinylamine copolymer having the structural units represented by the following formulas (I), (II), (III).[.,.]. .Iadd.and .Iaddend.(IV) .[.and (VI).].: ##STR1## wherein x.crclbar. represents an anion or hydroxyl ion R represents a hydrogen atom or a methyl group, M.sym. represents a hydrogen ion or a monovalent cation, in which the molar fraction of the structural unit (I) is 5 to 85% by mole, the molar fraction of the structural unit (II) is 2 to 85% by mole, the molar fraction of the structural unit (III) is 5 to 80% by mole,.[.the molar fraction of the structural unit (IV) is 0 to 40% by mole,.]. all of said molar fractions being based on the vinylamine copolymer, and the molar fraction of the structural unit .[.(V).]. (.Iadd.IV) is 0 to 8% by mole which is based on the total content of the structural units (III).[.,.]. .Iadd.and .Iaddend.(IV), .[.and (V),.].Type: GrantFiled: November 8, 1993Date of Patent: April 11, 1995Assignee: Mitsubishi Kasei CorporationInventors: Takaharu Itagaki, Mitsuaki Shiraga, Shigeru Sawayama, Kohichi Satoh
-
Patent number: H1582Abstract: Non-discolored chlorinated and chlorosulfonated olefin polymers having low levels of residual solvent are prepared in a process wherein monofluorobenzene is used as a reaction medium and isolation of the polymer is by means of a series of vented closed loop extruders. The process also results in suppression of the formation of monochloromonofluorobenzene as a by-product.Type: GrantFiled: June 15, 1994Date of Patent: August 6, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: Christopher J. Bish, Edward G. Brugel, Royce E. Ennis, Jerry W. Soape