Patents Examined by Terressa Mosley
  • Patent number: 6306514
    Abstract: In accordance with the present invention, there is provided an elastomeric flexible article, such as a surgeon's glove,and its method of manufacture. A flexible elastomeric article has a wearer-contacting surface in which a lubricant composition has been applied so as to substantially improve the lubricity of the surface with respect to damp skin. The lubricant composition is selected from the group consisting of a first composition and a second composition. The first composition comprises an acetylenic diol and at least one compound selected from the group consisting of an organo-modified silicone, an amino-modified silicone, and a cationic surfactant. The second composition comprises a cationic surfactant and at least one compound selected from the group consisting of an organo-modified silicone, an amino-modified silicone, an amino-modified silicone, and an acetylenic diol. The method of manufacturing the elastomeric flexible article comprises the following steps.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: October 23, 2001
    Assignee: Ansell Healthcare Products Inc.
    Inventors: William Joseph Weikel, John W. Bulluck
  • Patent number: 6288202
    Abstract: A process of forming a polycarbonate comprises providing a reaction mixture of at least one polycarbonate-forming monomer and carbon dioxide; and then reacting the polycarbonate-forming monomer and carbon dioxide in the reaction mixture to form the polycarbonate. In one embodiment, the polycarbonate is present in a condensate, and the process further comprises removing carbon dioxide from the reaction mixture; and then collecting the condensate from the reaction mixture. Moreover, uncrystallized polycarbonate may be treated with carbon dioxide to form crystalline polycarbonate. The crystalline polycarbonate is then rendered useful for solid state polymerization.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: September 11, 2001
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, Ramone Givens, Mitsutoshi Jikei, Jeffrey D. Cohen
  • Patent number: 6258921
    Abstract: A double-axis elongated polyester film for dyeing which simultaneously satisfies following formulas: 3.295≦NMD+NTD≦3.340  (1) Benzene plane orientation≦0.740  (2) Crystallinity (%)≦54  (3) 3≦Thermal shrinkage in machine direction(%)≦7  (4) 0≦Thermal shrinkage in transverse direction(%)≦3  (5) The polyester film is prepared by melt-extruding polyester chips and cooling the extrudate in a cooling drum to prepare a non-crystalline sheet; elongating said sheet at a temperature between 80 and 100° C. which is higher than glass transition temperature (Tg) to make 3.0 to 3.6 folds of length in machine direction to obtain single-axis elongated film; further elongating the film to 3.0-4.2 folds of length in transverse direction at 120-140° C.; thermally treating the obtained film in Tenter's thermal treatment zone at 210-240° C.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: July 10, 2001
    Inventors: Sang Bong Park, Kyung Heum Han, Jong Chan Park
  • Patent number: 6242559
    Abstract: The present invention provides methods for the polymerization and functionalization of hydroxy fatty acids to provide surface active agents. The surface active agents can be nonionic, cationic, anionic or amphoteric polymeric surface active agents.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: June 5, 2001
    Assignee: Zydex Industries
    Inventor: Ajay I. Ranka
  • Patent number: 6180748
    Abstract: The invention relates to a process of deactivating a polycarbonate, by mixing a polycarbonate having an active alkali metal catalyst residue therein with a deactivator represented of a formula of: wherein, R1-R7 and R9 are, independently, hydrogen; aliphatic hydrocarbon of from 1 to 20 carbon atoms; substituted aromatic hydrocarbon of from 6 to 20 carbon atoms; or unsubstituted aromatic hydrocarbon of from 6 to 20 carbon atoms; R8 and R10-R13 are, independently, substituted or unsubstituted aromatic hydrocarbon of from 6 to 20 carbon atoms; or aliphatic hydrocarbon of from 1 to 20 carbon atoms; A is a tetrafunctional hydrocarbon group; and x is an integer of from 1 to 3, at a temperature and time sufficient to deactivate the alkali metal catalyst to form a deactivated polycarbonate, wherein the deactivated catalyst is not removed from the deactivated polycarbonate. The invention also relates to a polycarbonate having a deactivated metal catalyst.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: January 30, 2001
    Assignee: Eastman Chemical Company
    Inventors: William R. Darnell, Theodore R. Walker, Jean C. Fleischer
  • Patent number: 6160082
    Abstract: Linear polyesters are branched by transesterification with resins having the formula: ##STR1## wherein n is an integer of from 1 to 10.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: December 12, 2000
    Assignee: General Electric Company
    Inventors: Ye-Gang Lin, Roy R. Odle, William J. Swatos, Pin-pin Wu
  • Patent number: 6149211
    Abstract: A solid tooth whitening composition in the form a table, gum, candy, or the like, is formed by combining carbamide peroxide with a non-hygroscopic sweetener base that comprises the hydrogenation product of isomaltulose. The composition may be stored for several weeks without detectable decomposition the carbamide peroxide to urea.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: November 21, 2000
    Inventors: Paul Losee, F. Richard Austin, Blaine D. Austin
  • Patent number: 6150493
    Abstract: The invention relates to a process for the preparation of poly (ester-carbonate)s from the corresponding oligomers, using solid state polymerization process, which comprises mixing the desired oligomers in a suitable solvent or non-solvent, adding a suitable catalyst to this mixture, refluxing the mixture for a period of 1 to 8 hours, removing the solvent by known methods, polymerization the oligomer mixture in the solid state either in presence of vacuum or under a flow of inn gas at a temperature ranging between C. for a period of 5 to 20 hours to obtain the product.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: November 21, 2000
    Assignee: General Electric Company
    Inventors: Sukhendu B. Hait, Swaminathan Sivaram
  • Patent number: 6143821
    Abstract: The present invention relates to powdery absorbents for water and aqueous liquids, which are based on water-swellable, but not water-soluble, polymers, are cross-linked, and are built up of partially neutralized, monoethylenically unsaturated, acid groups-containing monomers, optional further monomers copolymerizable with these, and optional polymers suitable as a graft basis. These polymers are produced by using a cross-linker combination consisting ofCH.sub.2 .dbd.CR.sup.5 --CO--(OCHR.sup.3 --CHR.sup.3).sub.z O--CH.sub.2 --CR.sup.5 .dbd.CH.sub.2 I.R.sup.1 --[O(CHR.sup.3 --CHR.sup.3 O).sub.u --CO--R.sup.2 ].sub.x II.withR.sup.1 : multivalent C.sub.2-10 -alkyl,R.sup.2 : linear or branched C.sub.2-10 -alkenyl,R.sup.3 : H, CH.sub.3, C.sub.2 H.sub.5,R.sup.5 : H, CH.sub.3,x: 2-6,u: 0-15,z: 3-20and a secondary cross-linker. Superficial secondary cross-linkage achieves a property combination of high retention, high absorption under pressure, low soluble contents, and a rapid liquid absorption.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: November 7, 2000
    Assignee: Stockhausen GmbH & Co. KG
    Inventor: Jochen Houben
  • Patent number: 6136448
    Abstract: A recording material, more particularly for ink-jet printers, comprises an inking layer formulated to locally receive a water-soluble pigment solution and containing an epoxy cross-linkable, carboxyl-grouped cationic mixed polymer, an epoxidized metal oxide and a water-soluble polymer.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: October 24, 2000
    Assignees: FEW Forschungs- und Entwicklungsgesellschaft Wolfen mbH, EMTEC Magnetics GmbH
    Inventors: Christoph Roth, Angela Kuhrt, Ursula Sell
  • Patent number: 6136948
    Abstract: A laser-sinterable powder product has been prepared having unique properties which allow the powder to be sintered in a selective laser sintering machine to form a sintered part which is near-fully dense. For most purposes, the sintered part is indistinguishable from another part having the same dimensions made by isotropically molding the powder. In addition to being freely flowable at a temperature near its softening temperature, a useful powder is disclosed that has a two-tier distribution in which substantially no primary particles have an average diameter greater than 180 .mu.m, provided further that the number average ratio of particles smaller than 53 .mu.m is greater than 80%, the remaining larger particles being in the size range from 53 .mu.m to 180 .mu.m. A powder with slow recrystallization rates, as evidenced by non-overlapping or slightly overlapping endothermic and exothermic peaks in their differential scanning calorimetry characteristics for scan rates of on the order of C. to 20.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: October 24, 2000
    Assignee: DTM Corporation
    Inventors: Elmer Douglas Dickens, Jr., Biing Lin Lee, Glenn Alfred Taylor, Angelo Joseph Magistro, Hendra Ng, Kevin P. McAlea, Paul F. Forderhase
  • Patent number: 6123933
    Abstract: A hair cosmetic composition comprising an amine-oxide-containing water-soluble resin having a weight-average molecular weight of 5,000 to 1,000,000. The hair cosmetic composition of the present invention has excellent setting force, conditioning effects and hair-washing property and being free from stickiness.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: September 26, 2000
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kazuhide Hayama, Yasuo Kitani, Tomoaki Hiwatashi
  • Patent number: 6117968
    Abstract: The level of anhydride linkages in copolyestercarbonates is decreased by preparing the copolyestercarbonate interfacially in a two-step method from at least one dihydroxyaromatic compound and at least one dicarboxylic acid. The first step is conducted at a pH in the range of about 4.5-9.5, employing the combination of a phase transfer catalyst such as a tetraalkylammonium halide and a tertiary amine such as triethylamine. The proportion of the phase transfer catalyst is in the range of about 3-12 mole percent based on total dihydroxyaromatic compound and dicarboxylic acid employed. In the second phosgenation step, the pH is raised to at least 10 and a stoichiometric phosgene excess of at least 5% is introduced.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: September 12, 2000
    Assignee: General Electric Company
    Inventors: Gary Charles Davis, Niles Richard Rosenquist, Paul Dean Sybert
  • Patent number: 6117972
    Abstract: A process for introducing steam into polymer dispersions or polymer solutions by introducing steam into the lower part of reaction apparatuses and deodorization apparatuses, in particular deodorization columns, which comprises introducing the steam beneath the liquid surface of the dispersion or the polymer solution.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: September 12, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Hubinger, Manfred Schulz
  • Patent number: 6117969
    Abstract: A polycarbonate resin composition comprising (A) 5 to 95 parts by weight of a polycarbonate resin comprising a plurality of aromatic polycarbonate main chains, wherein the aromatic polycarbonate main chains collectively contain specific heterounits in a specific amount in the polycarbonate main chains, and (B) 5 to 95 parts by weight of a rubber-reinforced thermoplastic resin comprising a graft copolymer which is obtained by a method comprising grafting on a rubber polymer at least one vinyl compound. The resin composition of the present invention has high impact resistance and high moldability. When the resin composition further comprises a flame retardant (C) and an anti-dripping agent as optionally components, the resin composition has an extremely high dripping-preventive property, as compared to a conventional polycarbonate resin composition containing a flame retardant and an anti-dripping agent.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: September 12, 2000
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Nobutsugu Nanba, Hiroshi Hachiya
  • Patent number: 6107448
    Abstract: An aromatic polycarbodiimide having a structural repeating unit represented by the following formula (I): ##STR1## wherein R represents a hydrogen atom or an alkyl group and n is an integer of 3 to 600,which has excellent solubility and heat resistance and also has excellent adhesion, low-temperature workability and moisture resistance, is provided.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: August 22, 2000
    Assignee: Nitto Denko Corporation
    Inventors: Michie Sakamoto, Takahiro Fukuoka, Masahiro Yoshioka, Amane Mochizuki
  • Patent number: 6103438
    Abstract: A polyester resin for toner comprising an acid component containing at least one selected from the group consisting of aromatic dicarboxylic acids and their lower alkyl esters, and an alcohol component containing at least one selected from the group consisting of bisphenol A derivative diols, wherein the content of aldehyde compounds, their decomposition products and by-products in the polyester resin is no more than 200 ppm. Toner polyester resins and toners are obtained which do not generate irritating odors even upon melting and kneading during the toner production or upon heating during the copying process, which provide clear images with no haziness due to reduced light permeability of the copy material, which have a wide range of color tone reproduction, and which provide excellent image precision on copied print.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: August 15, 2000
    Assignee: Mitsubishi Rayon Company Ltd.
    Inventors: Shinji Kubo, Noriyuki Tajiri, Hitoshi Iwasaki, Yoichi Nagai
  • Patent number: 6096853
    Abstract: A process has been surprisingly discovered that can produce a high heat carbonate polymer (i.e., one with a Tg greater that C.), without the drawbacks encountered in attempts to produce a high heat carbonate polymer. The process of the instant invention comprises the steps of:(1) reacting an aromatic amine with a dihydric phenol to prepare an aminophenol;(2) reacting an anhydride or dianhydride with the aminophenol to prepare a phenolic precursor; and(3) reacting the phenolic precursor with a carbonate precursor to prepare a high heat carbonate polymer.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: August 1, 2000
    Assignee: General Electric Company
    Inventors: Valentina Amerik, Theodorus L. Hoeks, Parfait Jean Marie Likibi, Mark Nelson
  • Patent number: 6093784
    Abstract: An electrophotographic photoconductor is composed of an electroconductive support and a photoconductive layer formed thereon, which photoconductive layer includes a polycarbonate resin. Aromatic polycarbonate resins not only for the electrophotographic photoconductor, but also for the materials for liquid display panels, optical cards, optical discs, varieties of films having high transparency and heat resistance, deposited plastic reflecting mirrors, and lenses are disclosed.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: July 25, 2000
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Tamura, Tomoyuki Shimada, Tsutomu Nakajima, Masaomi Sasaki, Toshimasa Tokuda
  • Patent number: 6093791
    Abstract: A semi-crystalline film comprised of a lactide polymer. The lactide polymer comprises a plurality of poly(lactide) polymer chains, residual lactide in concentration of less than about 5 percent and water in concentration of less than about 2000 parts-per-million. A process for manufacturing a semi-crystalline film with the lactide polymer composition is also disclosed.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: July 25, 2000
    Assignee: Cargill, Incorporated
    Inventors: Patrick Richard Gruber, Jeffrey John Kolstad, Christopher M. Ryan, Eric Stanley Hall, Robin Sue Eichen Conn