Patents Examined by Tae Yoon
  • Patent number: 6130298
    Abstract: A stainproof treatment agent containing:(A) a fluoroalkyl group-containing copolymer having(I) a repeating unit derived from a monomer having a fluoroalkyl group,(II) a repeating unit derived from a monomer containing no fluorine,(III) a repeating unit derived from vinyl chloride, and(IV) a repeating unit derived from a crosslinking monomer; and(B) an acrylic copolymer containing no fluorine, has durability so that sufficient water- and oil-repellency as well as stainproof properties are maintained before and after cleaning.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: October 10, 2000
    Assignee: Daikin Industries Ltd.
    Inventors: Masayuki Yamana, Ikuo Yamamoto, Mitsuhiro Usugaya, Taro Sano
  • Patent number: 6127455
    Abstract: A process of forming a seed polymer for use in an emulsion polymerization reaction. The process includes the steps of providing an aqueous mixture of styrene, emulsifying agent, initiator and at least one polymerizable di- or tri-carboxylic acid and then polymerizing the aqueous mixture in the presence of a nonpolymerizable di- or tri-carboxylic acid to form the seed polymer.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: October 3, 2000
    Assignee: OMNOVA Solutions Inc.
    Inventors: Michael J. Dohard, John W. Guyer, Vincent M. Rasicci
  • Patent number: 6127500
    Abstract: Allylic copolymer resins and processes for making them are disclosed. The resins are made by copolymerizing an ethylenic monomer, a monofunctional allyl monomer, and a multifunctional allyl monomer under free-radical conditions. The multifunctional allyl monomer is used in an amount and manner effective to give a copolymer resin having a polydispersity (Mw/Mn) within the range of about 5 to about 30. The resins, which are easy to make with even bulk polymerization, are particularly valuable, for example, as toner resins, thermoset resins, reactive plasticizers, and rheology modifiers.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: October 3, 2000
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Shao Hua Guo, Daniel B. Pourreau
  • Patent number: 6127499
    Abstract: A polymeric amphipathic stabilizer is formed of hydrophobic monomer units and hydrophilic monomer units which comprise carboxylic free acid or acid salt units and glycidyl or anhydride units. The glycidyl or anhydride units react onto reactive groups on polymer particles when dispersed in non-aqueous liquid and provide improved stability when the particles are subsequently dispersed in liquid electrolyte.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: October 3, 2000
    Assignee: Ciba Specialty Chemicals Water Treatments Limited
    Inventors: Kenneth Charles Symes, Kishor Kumar Mistry
  • Patent number: 6127518
    Abstract: Method of producing dry polyvinyl acetate particles that are readily dispersible in water, are vinyl acetate monomer free and are useful for making polyvinyl acetate dispersion compositions that are low in odor, form clear dried films and may be used in adhesives, sealants, caulks and coatings. The method includes manufacturing an aqueous, e.g. water, dispersion of polyvinyl acetate containing polyvinyl alcohol; drying to remove volatiles by converting the dispersion to dry form under controlled temperature conditions and redispersing the dried polyvinyl acetate particles in an aqueous medium to form a polyvinyl acetate dispersion that is substantially free of vinyl acetate monomer.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: October 3, 2000
    Assignee: Elmer's Products, Inc.
    Inventors: Peter Spiros Columbus, Yogeshbhai Babubhai Patel
  • Patent number: 6127472
    Abstract: A rubber composition exhibiting excellent low rolling resistance, high wet skid properties, and superior wear resistance, and suitably used as a vulcanized rubber for tire tread. The rubber composition comprises a styrene-butadiene copolymer previously extended using an extender oil, in an amount from 30 to 100 wt % of the total rubber components, and an extender oil in an amount from 6 to 50 parts by weight for 100 parts by weight of the total rubber components, of which 20 to 50 parts by weight of the extender oil for 100 parts by weight of styrene-butadiene copolymer is used to previously extend the styrene-butadiene copolymer. The styrene-butadiene copolymer has a styrene content from 5 to 45 wt %, 20 to 80% of a microstructure 1,2-bond of butadiene portion, a glass transition temperature from -55.degree. C. to -20.degree. C., and 40 wt % or more of a single styrene bond and 10 wt % or less of long styrene chain which contains 8 or more styrene molecules, among the total styrene bonds.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: October 3, 2000
    Assignee: JSR Corporation
    Inventors: Naokazu Kobayashi, Hiroshi Akema, Toshihiro Tadaki, Fumio Tsutsumi
  • Patent number: 6127470
    Abstract: This invention relates to a fluid dispersion of at least one dibenzylidene sorbitol acetal derivative. The sorbitol acetal derivative is useful as a clarifying agent for polyolefins and the inventive fluid dispersion permits improvements in the handling and processing of and mixing within the polyolefin composition. The inventive dispersion must be shelf stable, retain its nucleating effects, be compatible with polypropylene (and other polyolefins), and possess both short-term and long-term viscosities which permit acceptable transport through a standard polyolefin-manufacturing peristaltic pump. The preferred inventive dispersion thus comprises 3,4-DMDBS and at least one ethoxylated nonionic surfactant having an HLB of greater than about 8.5. Preferred surfactants include those selected from the group consisting essentially of ethoxylated sorbitan (C.sub.8 -C.sub.22) monoesters and ethoxylated nonyl-phenol ethers.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: October 3, 2000
    Assignee: Millken & Company
    Inventors: James D. Cobb, III, Jack L. Rolen, Nathan A. Mehl
  • Patent number: 6126992
    Abstract: An optical article made of a transparent polymer which includes terephthaloyl moieties, optionally, other aromatic diacid moieties; ethylene glycol moieties; isosorbide moieties; and, optionally, one or more other diol moieties, wherein the polymer has an inherent viscosity of at least about 0.35 dL/g as measured on a 1% solution (weight/volume) in o-chlorophenol at 25.degree. C.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: October 3, 2000
    Assignee: E.I. DuPont de Nemours and Company
    Inventors: Garo Khanarian, Larry F. Charbonneau, Helmut B. Witteler
  • Patent number: 6124393
    Abstract: A composite of a thermosetting resin with a metallic oxide, prepared by a process which comprises subjecting a metal alkoxide containing a silicon alkoxide and/or a low condensate thereof to hydrolysis and polycondensation in a solution of a phenolic resin and/or thermosetting resin containing a phenolic resin while effecting the removal of the solvents and/or curling reaction of the resins to incorporate a particulate metallic oxide having an average particle diameter of from 0.01 to 5 .mu.m homogeneously in the thermosetting resin with a good interfacial wettability without causing macroscopic phase separation, as well as a process for the preparation of such a composite of a thermosetting resin with a metallic oxide and a process for the preparation of a crack-free molded composite product. A tribological material such as bearing, brake and clutch material includes such a composite as an essential constituent.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: September 26, 2000
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kazutoshi Haraguchi, Yusho Usami
  • Patent number: 6121373
    Abstract: Thickening can be obtained by adding a silicone latex to the water phase of a water-in-silicone emulsion, instead of adding the silicone latex to the silicone phase of the emulsion. The latex is used in a range of about 0.1-5.0% by weight. Thick emulsions are made by (i) separately preparing a silicone phase containing a silicone polyether and a cyclic siloxane; (ii) separately preparing an aqueous phase containing water and at least one active ingredient; (iii) adding the latex to the aqueous phase; and (iv) combining and mixing the phases.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: September 19, 2000
    Assignee: Dow Corning Corporation
    Inventor: Michael Stephen Starch
  • Patent number: 6121353
    Abstract: A polymer alloy comprising ETFE having a melting point of at most 250.degree. C. and a melt flow rate of at least 20 at 297.degree. C., PPS and a compatibilizer (such as 3-aminopropyltriethoxysilane).
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: September 19, 2000
    Assignee: Asahi Glass Company Ltd.
    Inventors: Masao Umino, Yasuki Miura, Masataka Yokota
  • Patent number: 6117960
    Abstract: The invention concerns water-soluble cross-linkable copolymers having a molecular weight of .ltoreq.500000 and comprising a) between 20 and 95 wt. % sulphonic-acid- or sulphonate-group-containing monomer units; b) between 4 and 80 wt. % N-methylol- or N-alkoxymethyl-group containing monomer units; and c) between 0.1 and 20 wt. % hydrophobic monomer units selected from the group comprising water-insoluble ethylenically unsaturated compounds and hydrophobic end groups of initiator radicals or regulator molecules, the portions in wt. % being relative to the total weight of the copolymer. The portion of sulphonic-acid- or sulphonate-group-containing monomer units can optionally be substituted by up to 50 wt. %, relative to the portion by weight of monomer units a), by carboxyl-group-containing monomer units d) or amide-group-containing monomer units e).
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: September 12, 2000
    Assignee: Wacker-Chemie GmbH
    Inventors: Klaus Kohlhammer, Gerhard Koegler, Peter Ball, Monika Rockinger, Walter Dobler
  • Patent number: 6114410
    Abstract: An improved proppant and a method of increasing the conductivity of the fractures of subterranean formations is described. The proppant contains a mixture of bondable particles and removable particles. The bondable particles within a subterranean formation, adhere to adjacent bondable particles to form a permanent, self-supporting matrix and the removable particles from the self supporting matrix the ambient conditions of the fracture. The conductivity of the fracture and the overall productivity of the hydraulic operation is increased.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: September 5, 2000
    Assignee: TechniSand, Inc.
    Inventor: Donald E. Betzold
  • Patent number: 6114440
    Abstract: A silicone resin-containing emulsion composition is prepared by emulsion polymerizing a solution containing a water-insoluble silanol group-bearing silicone resin and a radical polymerizable vinyl monomer and substantially free of an organic solvent. The emulsion may further contain a film-forming assistant having a boiling point of at least 100.degree. C. and soluble or uniformly dispersible in water. The emulsion can be coated and cured into a film having mar resistance, weather resistance, and chemical resistance.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: September 5, 2000
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masaaki Yamaya, Hiroaki Kizaki, Masahiro Furuya, Akira Yamamoto
  • Patent number: 6113811
    Abstract: A dichroic polarizing film is made, for example, by, first combining polyvinyl alcohol and a second polymer, such as, polyvinyl pyrrolidone or a sulfonated polyester, in a solvent. The ratio of polyvinyl alcohol to second polymer is between about 5:1 to 100:1 by weight. The film is coated on a substrate, dried, and then stretched to orient at least a portion of the film. The film incorporates a dichroic dye material, such as iodine, to form a dichroic polarizer. This polarizer may be used in conjunction with a multilayer optical film, such as a reflective polarizer, to form an optical polarizer. The multilayer optical film may contain two or more sets of polyester films, where at least one of the sets is birefringent and orientable by stretching. The polyvinyl alcohol/second polymer film and the multilayer optical film may be simultaneously stretched to orient both polymer films.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: September 5, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: William L. Kausch, Brian H. Williams, William W. Merrill
  • Patent number: 6114042
    Abstract: Biodegradable polyesters P1 obtainable by reaction of a mixture consisting essentially of(a1) a mixture consisting essentially offrom 35 to 95 mol % of adipic acid or ester-forming derivatives thereof or mixtures thereof,from 5 to 65 mol % of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, andfrom 0 to 5 mol % of a sulfonate compound,the sum of the individual mole percentages being 100 mol %, and(a2) a dihydroxy compound selected from the group consisting of C.sub.2 -C.sub.6 -alkanediols and C.sub.5 -C.sub.10 -cycloalkanediols,the molar ratio of (a1) to (a2) being chosen within the range from 0.4:1 to 1.5:1,with the proviso that the polyesters P1 have a molecular weight (M.sub.n) within the range from 5000 to 50,000 g/mol, a viscosity number within the range from 30 to 350 g/ml (measured in 50:50 w/w dichlorobenzene/phenol at a concentration of 0.5% by weight of polyester P1 at 25.degree. C.) and a melting point within the range from 50 to 170.degree. C.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: September 5, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Volker Warzelhan, Gunnar Schornick, Bernd Bruchmann, Ursula Seeliger, Motonori Yamamoto, Peter Bauer
  • Patent number: 6114469
    Abstract: Rubber compositions which contain a complex of zinc hexasulfide with an amine, together with a vulcanization accelerator exhibit favorable vulcanization behavior, and their vulcanizates show improved properties.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: September 5, 2000
    Assignee: Flexsys America L.P.
    Inventors: Thomas Bigley Rauchfuss, Otto William Maender, Frederick Ignatz-Hoover
  • Patent number: 6114439
    Abstract: A crosslinkable aqueous polyester-containing emulsion and a process for preparing the same. The emulsion is obtained by polymerizing unsaturated monomers of acrylic, using a crosslinkable, sulfonated polyester emulsifier having an acid number less than 80 mg KOH/g and an intrinsic viscosity greater than 0.1 dl/g as an emulsifier. The emulsion has the chemical characteristics of both polyester and acrylic resin, i.e. has low volatile organic compounds, good mechanical stability, and good storage stability. Since the emulsion is crosslinkable, a film formed by the emulsion has excellent adhesion, water and heat resistance. Thus, the emulsion is useful for coating and printing on Nylon, PET, OPP films, as well as for high performance industrial surface coating and adhesion for which good heat-, water-, and weather-resistance are required.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: September 5, 2000
    Assignee: Industrial Technology Research Institute
    Inventors: Herng-Dar Hwu, Yih-Her Chang, Tsing-Tang Song, Tsai-Wie Tseng
  • Patent number: 6114433
    Abstract: A novel PTC conductive polymer composition is disclosed, which comprises (a) 35 to 60%, by weight of the composition, of a branched polyolefin with a polydispersity index of less than 2.5; and (b) 20 to 45%, by weight of the composition, of conductive particles which have been dispersed in the polyolefin. The PTC composition of the invention has intense, reproducible PTC behavior and is particularly suitable for use in PTC thermistors.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: September 5, 2000
    Assignee: Industrial Technology Research Institute
    Inventors: Chia-Tin Chung, Bin-Yuan Lin, Hsin-Herng Wang, Hsiao-Pin Huang
  • Patent number: 6114415
    Abstract: A batchwise or continuous process for producing coagulated particles of polymer latex, involves partially or completely filling at least one receptacle with a fluid A which can be water, a polymer latex emulsion or a coagulant solution, the receptacle being equipped with baffles containing at least one orifice, injecting into the receptacle at least one fluid other than the fluid of the preceding stage, the injected fluid being a polymer latex emulsion and/or a coagulant solution, and in then creating and maintaining within the receptacle an oscillatory flow or an impulsive flow, in conjunction with the formation of eddies or of vortices.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: September 5, 2000
    Assignee: Elf Atochem, S.A.
    Inventors: Chris Bertelo, Laurent Gervat, Jerome Laffont, Malcolm Robert Mackley, Gilles Meunier