Specified Oxygen-containing Compound Is Air, Elemental Oxygen, Or Ozone Patents (Class 525/388)
  • Publication number: 20150141581
    Abstract: Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating the fluoropolymer from the aqueous medium by separating fluoropolymer resin in wet form from the aqueous medium and drying to produce fluoropolymer resin in dry form. The process comprises: exposing the fluoropolymer resin in wet or dry form to oxidizing agent.
    Type: Application
    Filed: May 3, 2013
    Publication date: May 21, 2015
    Inventors: Paul Douglas Brothers, Gregory Allen Chapman, Subhash Vishnu Gangal, Adam Paul Smith, Heidi Elizabeth Burch
  • Publication number: 20150038624
    Abstract: Processes are disclosed for oxygen-tailoring polyethylene, particularly polyethylenes suitable for wire and cable applications. One process includes conveying a first polyethylene having a melt index ?5.0 and an MWD ?5.0 through mixing or extrusion apparatus having a feed zone, a melt-mixing zone downstream of the feed zone, and a melt zone downstream of the melt-mixing zone, wherein the temperature of the first polyethylene in the melt zone ranges from about 180° C. to about 300° C.; and contacting the first polyethylene with an amount of an oxygen-containing gas having at least about 20.0 parts by weight oxygen per million per parts by weight of the first polyethylene (ppm (wt) O2). Polyethylene compositions having improved properties, particularly for wire and cable applications are disclosed.
    Type: Application
    Filed: December 12, 2012
    Publication date: February 5, 2015
    Applicant: ExxonMobil Chemical Patents Inc.
    Inventors: Gerd A. Allermann, Danny Van Hoyweghen, Steven A. Best, Anthony Poloso, Nicolas M. De Ketelaere
  • Patent number: 8809465
    Abstract: The present invention relates to resin pellets which comprises a thermoplastic resin (A) and an oxidation catalyst (B) which is not supported by any carrier, wherein if the peak area in the vicinity of 1715 cm?1 is defined to be Ic and the peak area observed in the vicinity of 1470 cm?1 is defined to be Im in the IR spectroscopic measurement of the pellets, the ratio: Ic/Im observed for the surface of the pellet is greater than that observed for the interior thereof. The pellets are thermoplastic resin pellets excellent in the oxygen-absorbing capacity and accordingly, they can suitably used as pellets for molding an oxygen absorptive resin article.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: August 19, 2014
    Assignee: Toyo Seikan Kaisha, Ltd
    Inventors: Ikuo Komatsu, Yoshiko Narikawa, Yuji Yamaguchi, Hiroaki Goto
  • Publication number: 20140142255
    Abstract: A plasma treatment method that includes providing treatment chamber including an intermediate heating volume and an interior treatment volume. The interior treatment volume contains an electrode assembly for generating a plasma and the intermediate heating volume heats the interior treatment volume. A work piece is traversed through the treatment chamber. A process gas is introduced to the interior treatment volume of the treatment chamber. A plasma is formed with the electrode assembly from the process gas, wherein a reactive species of the plasma is accelerated towards the fiber tow by flow vortices produced in the interior treatment volume by the electrode assembly.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 22, 2014
    Applicant: UT-BATTELLE, LLC
    Inventors: Felix L. Paulauskas, Truman Bonds
  • Publication number: 20140121331
    Abstract: Provided is a treatment method for fluororesin pellets to remove hydrofluoric acid released from fluororesin pellets obtained by melt-molding a melt-moldable fluororesin. The treatment method comprises bringing a hydrofluoric acid-removing medium selected from warm water of from 30 to 200° C., steam of from 100 to 200° C. and warm wind of from 40 to 200° C. into contact with fluororesin pellets obtained by melt-molding a melt-moldable fluororesin, and thereby treating the fluororesin pellets so that the amount of hydrofluoric acid released per kg of the resulting fluororesin pellets would be at most 5 ?g as determined after the storage of the resulting fluororesin pellets at 35° C. for 15 days.
    Type: Application
    Filed: January 6, 2014
    Publication date: May 1, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Satoshi Otsugu, Yuji Tanonaka, Atsushi Tsuji, Shigeru Aida, Akio Senmyo
  • Publication number: 20130345368
    Abstract: Process for reducing thermally induced discoloration of melt-processible fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises: melt extruding said fluoropolymer resin to produce molten fluoropolymer resin; and exposing said molten fluoropolymer resin to an oxygen source during said melt extruding.
    Type: Application
    Filed: May 2, 2013
    Publication date: December 26, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Paul Douglas Brothers, Gregory Allen Chapman, Subhash Vishnu Gangal
  • Patent number: 8389641
    Abstract: The present invention provides a modified diene rubber which can be produced economically and improve low-loss properties and wear resistance of a rubber composition made therefrom, as compared with the conventional modified diene rubber. The present invention further provides: a method of producing the modified diene rubber; a rubber composition using the modified diene rubber; and a tire using the rubber composition. Specifically, the present invention provides: a modified diene rubber, produced by first oxidizing diene rubber latex and then adding a polar group-including hydrazide compound to a terminal end of a molecular chain of the diene rubber; a rubber composition, comprising the modified diene rubber; and a tire, comprising a tire member made of the rubber composition.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: March 5, 2013
    Assignee: Bridgestone Corporation
    Inventor: Makiko Yonemoto
  • Publication number: 20130030088
    Abstract: Catalytic partial oxidation using a metal oxide catalyst surface treats crumb rubber that is recovered from waste rubber tires. Advantages of using catalytically oxidized crumb rubber relative to using non-catalytically oxidized crumb rubber in making the rubberized concrete, includes superior mechanical strength and water-repealing capability, lower oxidation temperature and shorter oxidation time, and accelerated hydration times. Rubber oil (a gas condensate) co-produced from the crumb rubber partial oxidation process is equal to or better than the commercial superplasticizers. Industrial scale partial oxidation employs a continuous flow tubular reactor where a crumb rubber/catalyst mixture is fed into the reactor co-currently with an air/nitrogen mixture.
    Type: Application
    Filed: October 1, 2012
    Publication date: January 31, 2013
    Applicant: Chun Well Industry Co., Ltd.
    Inventor: Chun Well Industry Co., Ltd.
  • Patent number: 8048965
    Abstract: Disclosed is a method for extending a shelf life of vinyl ester resin or unsaturated polyester resin during transportation or general storage. The method includes the step of enhancing an oxygen content of the vinyl ester resin or the unsaturated polyester resin, such that the self-polymerization reaction of reactive functional groups having carbon-carbon unsaturated double bonds of the vinyl ester resin or the unsaturated polyester resin can be minimized, so as to slow down occurrence of a gelation phenomenon of the vinyl ester resin or the unsaturated polyester resin in a long-time transportation or storage, and further to decrease a monetary loss.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: November 1, 2011
    Assignee: Swancor Inc. Co., Ltd.
    Inventors: Feng-Mao Huang, Shih-Wen Yur, Ming-Zhou Chuang
  • Publication number: 20110028659
    Abstract: Disclosed is a method for extending a shelf life of vinyl ester resin or unsaturated polyester resin during transportation or general storage. The method includes the step of enhancing an oxygen content of the vinyl ester resin or the unsaturated polyester resin, such that the self-polymerization reaction of reactive functional groups having carbon-carbon unsaturated double bonds of the vinyl ester resin or the unsaturated polyester resin can be minimized, so as to slow down occurrence of a gelation phenomenon of the vinyl ester resin or the unsaturated polyester resin in a long-time transportation or storage, and further to decrease a monetary loss.
    Type: Application
    Filed: July 30, 2009
    Publication date: February 3, 2011
    Inventors: Feng-Mao HUANG, Shih-Wen YUR, Ming-Zhou CHUANG
  • Patent number: 7825196
    Abstract: Polyethylene modified by using radical initiators such as oxygen and peroxides sometimes has a yellow color which may be reduced or eliminated by incorporating additives such as polyethylene glycol, and/or neutralizing species such as alkali metal stearates, particularly calcium stearate, and zinc oxide.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: November 2, 2010
    Assignee: Fina Technology, Inc.
    Inventors: Vincent Barre, Tim Coffy, Cyril France Chevillard
  • Patent number: 7767767
    Abstract: A method of modifying polyethylene is disclosed. The method comprises contacting the polyethylene powder with ozone. The modified polyethylene exhibits an increase in melt elasticity and the complex viscosity at low shear rates. The rheological benefits are achieved without a significant reduction in the weight average molecular weight of the polyethylene. The modified polyethylene can be used in applications that require higher melt strength such as film or blow molding.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: August 3, 2010
    Assignee: Equistar Chemicals, LP
    Inventors: Andrew J. Scheie, Richard T. E. Sylvester
  • Patent number: 7705092
    Abstract: The present invention has its object to provide a process for producing a vinyl polymer which can provide a vinyl polymer in such form that a polymerization catalyst is effectively removed from that. The present invention relates to a process for producing a vinyl polymer wherein a vinyl polymer at the time of completion of the polymerization is treated with oxygen in the presence of a polar solvent. More preferably, the present invention relates to a process for bringing a polymer added with a polar solvent having a relative dielectric constant at 20° C. of not lower than 10 into contact with mixed gases of oxygen and an inert gas such as nitrogen with an oxygen concentration below the explosion limit oxygen concentration of this solvent as in the state of occurrence as a pure component.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: April 27, 2010
    Assignee: Kaneka Corporation
    Inventors: Yousuke Asai, Nao Fujita
  • Patent number: 7683137
    Abstract: Polyethylene modified by using radical initiators such as oxygen and peroxides sometimes has a yellow color which may be reduced or eliminated by incorporating additives such as polyethylene glycol, and/or neutralizing species such as alkali metal stearates, particularly calcium stearate, and zinc oxide.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: March 23, 2010
    Assignee: Fina Technology, Inc.
    Inventors: Vincent Henri Barre, Tim J. Coffy, Cyril Chevillard
  • Patent number: 7579412
    Abstract: The present invention relates to a process for preparing carboxyl-terminated polyisobutenes by ozonolysis of polyisobutenes terminated by an ethylenically unsaturated double bond.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: August 25, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Arno Lange, Helmut Mach, Hans Peter Rath, Ulrich Karl, Bela Ivan, Peter Werner Groh, Zsuzsanna Tamara Nagy, Viktoria Palfi
  • Publication number: 20090088534
    Abstract: A method of modifying polyethylene is disclosed. The method comprises contacting the polyethylene powder with ozone. The modified polyethylene exhibits an increase in melt elasticity and the complex viscosity at low shear rates. The rheological benefits are achieved without a significant reduction in the weight average molecular weight of the polyethylene. The modified polyethylene can be used in applications that require higher melt strength such as film or blow molding.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 2, 2009
    Inventors: Andrew J. Scheie, Richard T.E. Sylvester
  • Publication number: 20090030156
    Abstract: The purity, molecular weight and other properties of natural rubber are controlled using the process of in situ ozonolysis reaction. The process further comprises a step of removing impurities from natural rubber latex by using a separator prior to the in situ ozonolysis reaction process, and a step of removing water from the modified natural rubber by using a coagulant, formic acid or acetic acid subsequent to the in situ ozonolysis reaction process.
    Type: Application
    Filed: June 23, 2008
    Publication date: January 29, 2009
    Inventor: Ploenpit Boochathum
  • Patent number: 7473740
    Abstract: The present invention relates to a method for partial or total oxidation of one or several thiocarbonylthio ends of a polymer, obtained by radical polymerisation controlled by reversible addition-cleavage with thiocarbonylthio agents, Said method comprising the step of contacting said polymer with an ozone-containing gas, during which ozone reacts with the one or several thiocarbonylthio ends.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: January 6, 2009
    Assignee: Rhodia Chimie
    Inventors: Samir Zard, Béatrice Sire, Philippe Jost
  • Publication number: 20080306215
    Abstract: A process is described for functionalizing a copolymer comprising units derived from at least one ?-olefin and units derived from at least one diene, which copolymer contains at least one double bond. The process comprises reacting the copolymer with at least one functionalizing agent to introduce polar pendant oxygen-containing functional groups onto the copolymer.
    Type: Application
    Filed: June 6, 2007
    Publication date: December 11, 2008
    Inventors: Abhimanyu Onkar Patil, Stephen Zushma, Steven P. Rucker, Christian Peter Mehnert, Raymond A. Cook, Lisa Saunders Baugh, Enock Berluche
  • Patent number: 7294673
    Abstract: A method of modifying a polymeric material whereby the polymeric material is modified to give a highly durable surface without decreasing its strength. Namely, a polymeric material is modified by the method comprising a combination of an impregnation step, an activation step, a step of grafting a monomer and a step of a treatment with a hydrophilic polymer. Thus, the hydrophilic nature, adhesiveness, and so forth of polymeric materials such as polyolefins can be improved without causing any decrease in the practical strength. The thus obtained polymeric materials are usable in articles with a need for high water absorptivity and high adhesiveness, for example, water-absorbing materials and water-retaining materials for medical, sanitary, cosmetic articles or supplies, agricultural materials, synthetic papers, filters and fiber products for clothes, for improving adhesiveness of composite materials and the like.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: November 13, 2007
    Assignee: FiberMark Gessner GmbH & Co.
    Inventor: Hitoshi Kanazawa
  • Patent number: 7141646
    Abstract: The present invention provides a method of purifying a vinyl polymer to be used as a component of a composition capable of undergoing hydrosilylation. The present invention provides a vinyl polymers obtainable by atom transfer radical polymerization can be purified economically and efficiently by adsorption treatment using an acidic adsorbent and a basic adsorbent combinedly, with the result that the reactivity in hydrosilylation thereof is improved. Thus, the polymers can be used as components in hydrosilylation reaction-susceptible compositions.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: November 28, 2006
    Assignee: Kaneka Corporation
    Inventors: Kenichi Kitano, Yoshiki Nakagawa
  • Patent number: 6989423
    Abstract: Processes are disclosed for oxygen-tailoring polyethylene resin. Polyethylene resin is conveyed through a feed zone, a melt-mixing zone and a melt zone. The resin is contacted with oxygen in an amount of at least 40 parts by weight O2 per million parts by weight resin, and contacted with primary antioxidant downstream of the point or points of oxygen contact. The oxygen-treated resin can be used to make polyethylene film having improved gauge uniformity.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: January 24, 2006
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: James E. Wagner, Jerry M. Johnson, Dale J. Joy, Wesley J. Robertson, Timothy J. Cowell
  • Patent number: 6958373
    Abstract: Polymeric materials are recycled by transformation to useful chemicals by oxidization in the liquid phase using acetic acid as a solvent and a metal bromide catalyst.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: October 25, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Walter Partenheimer
  • Patent number: 6830782
    Abstract: A method of modifying a polymeric material which comprises the steps of activation-treatment and a hydrophilic polymer-treatment, or comprises the steps of activation-treatment, a hydrophilic polymer-treatment, and monomer grafting in this order, or comprises the step of a solvent-treatment followed by these steps. Thus, the polymeric material, e.g., polyolefin, is improved in hydrophilicity, adhesion, etc. without lowering the practical strength thereof. The polymeric material thus improved in adhesion and other properties can be used in many applications where water absorption and adhesion are required, such as an absorption material, e.g., a wiping/cleansing material, a water retention material, a material for microorganism culture media, a separator for batteries (or cells), a synthetic paper, a filter medium, a textile product for clothing, a medical/sanitary/cosmetic supply, and reinforcing fibers for composite materials.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: December 14, 2004
    Inventor: Hitoshi Kanazawa
  • Patent number: 6825283
    Abstract: Oxidized waxes which are prepared by oxidizing polyolefins obtained by single-site catalysis of transition metal complexes from groups 5 to 8 of the Periodic Table of the Elements and have a molecular weight Mw in the range from 1000 to 40,000 g/mol.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: November 30, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Shahram Mihan, Andreas Deckers
  • Publication number: 20040224085
    Abstract: Hydrogen-plasma modification of a contact lens made from a fluorinated polymer reduces the surface chemistry of by removing fluorine, leaving behind a carbon-enriched surface that is further plasma processed into a hydrophilic surface for a lens material to be inserted into the ocular environment.
    Type: Application
    Filed: June 9, 2004
    Publication date: November 11, 2004
    Applicant: Bausch & Lomb Incorporated
    Inventor: George L. Grobe
  • Patent number: 6794461
    Abstract: This invention provides a method for purification of a vinyl polymer which comprises the atom transfer radical polymerization of a vinyl monomer using a transition metal complex as the polymerization catalyst, said vinyl polymer being brought into contact with an oxidizing agent or a reducing agent.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: September 21, 2004
    Assignee: Kaneka Corporation
    Inventors: Nao Fujita, Kenichi Kitano, Yoshiki Nakagawa
  • Patent number: 6794456
    Abstract: Hydrogen-plasma modification of a contact lens made from a fluorinated polymer reduces the surface chemistry of by removing fluorine, leaving behind a carbon-enriched surface that is further plasma processed into a hydrophilic surface for a lens material to be inserted into the ocular environment.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: September 21, 2004
    Assignee: Bausch & Lomb Incorporated
    Inventor: George L. Grobe, III
  • Publication number: 20040162404
    Abstract: A method for forming a fluoropolymer comprises providing a reaction mixture comprising carbon dioxide, at least one fluoromonomer, and an initiator; and reacting the at least one fluoromonomer in the reaction mixture to form a fluoropolymer. The fluoropolymer has a multimodal molecular weight distribution.
    Type: Application
    Filed: February 13, 2004
    Publication date: August 19, 2004
    Applicants: University of North Carolina at Chapel Hill, North Carolina State University
    Inventors: Joseph M. DeSimone, George W. Roberts, Paul A. Charpentier
  • Publication number: 20040082722
    Abstract: Disclosed is a method of modifying polyethylene to increase its ability to resist the transmission of water vapor. The polyethylene is modified to increase long chain branching resulting in lower water vapor transmission rates in films prepared with the modified polyethylene. The polyethylene can be modified using peroxides, air and even by admixture with high long chain branching content polyethylene. The polyethylene, particularly when in the form of films, can be used for preparing packaging where sorption of flavor, aroma, or colorant compounds must be minimized.
    Type: Application
    Filed: October 15, 2003
    Publication date: April 29, 2004
    Applicant: Fina Technology, Inc.
    Inventors: Michael A. McLeod, Gerhard K. Guenther
  • Patent number: 6716945
    Abstract: A method for forming a fluoropolymer comprises providing a reaction mixture comprising carbon dioxide, at least one fluoromonomer, and an initiator; and reacting the at least one fluoromonomer in the reaction mixture to form a fluoropolymer. The fluoropolymer has a multimodal molecular weight distribution.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: April 6, 2004
    Assignees: North Carolina State University, University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, George W. Roberts, Paul A. Charpentier
  • Patent number: 6703446
    Abstract: Hetero-telechelic polymers having the formula: FG—(Q)d—Z—J—[A(R1R2R3)]x  (I) wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hydrocarbons, alkenylsubstituted aromatic hydrocarbons, and mixtures thereof; d is an integer from 10 to 200; Z is a branched or straight chain hydrocarbon group which contains 3-25 carbon atoms, optionally containing aryl or substituted aryl groups; J is oxygen, sulfur, or nitrogen; [A(R1R2R3)]x is a protecting group, wherein A is an element selected from Group IVa of the Periodic Table of Elements; R1, R2, and R3 are each independently selected from the group consisting of hydrogen, alkyl, substituted alkyl groups containing lower alkyl, lower alkylthio, and lower dialkylamino groups, aryl or substituted aryl groups containing lower alkyl, lower alkylthio, and lower dialkylam
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: March 9, 2004
    Assignee: FMC Corporation, Lithium Division
    Inventors: James A. Schwindeman, Robert J. Letchford, Conrad W. Kamienski, Roderic P. Quirk
  • Patent number: 6699939
    Abstract: Hetero-telechelic polymers having the formula: FG—(Q)d—Z—J—[A(R1R2R3)]x  (I) wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hydrocarbons, alkenylsubstituted aromatic hydrocarbons, and mixtures thereof; d is an integer from 10 to 200; Z is a branched or straight chain hydrocarbon group which contains 3-25 carbon atoms, optionally containing aryl or substituted aryl groups; J is oxygen, sulfur, or nitrogen; [A(R1R2R3)]x is a protecting group, wherein A is an element selected from Group IVa of the Periodic Table of Elements; R1, R2, and R3 are each independently selected from the group consisting of hydrogen, alkyl, substituted alkyl groups containing lower alkyl, lower alkylthio, and lower dialkylamino groups, aryl or substituted aryl groups containing lower alkyl, lower alkylthio, and lower dialkylam
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: March 2, 2004
    Assignee: FMC Corporation, Lithium Division
    Inventors: James A. Schwindeman, Robert J. Letchford, Conrad W. Kamienski, Roderic P. Quirk
  • Publication number: 20030171499
    Abstract: Hydrogen-plasma modification of a contact lens made from a fluorinated polymer reduces the surface chemistry of by removing fluorine, leaving behind a carbon-enriched surface that is further plasma processed into a hydrophilic surface for a lens material to be inserted into the ocular environment.
    Type: Application
    Filed: January 28, 2003
    Publication date: September 11, 2003
    Applicant: Bausch & Lomb Incorporated
    Inventor: George L. Grobe
  • Patent number: 6583231
    Abstract: The invention relates to a process to make aminated polyolefins involving the steps of: ozonolysis of one or more low-molecular weight polyolefins with at least one end group that is unsaturated, in the presence of an alkanol-hydrocarbon mixture, to form polyolefin-alkoxyhydroperoxides, catalytic reduction of the polyolefin-alkoxyhydroperoxides with hydrogen and a suitable catalyst, to form a mixture of hemiacetals and hemiketals, in the presence of a solvent, removal of the catalyst and optional washing of the mixture resulting from step 2, to remove undesired side products, reductive amination of the hemiacetal hemiketal mixture to form the aminated polyolefin end product, preferably at a temperature of 50-200° C., optionally in the presence of a solvent, and removal of the catalyst and optional removal of the solvent. The aminated products obtained are pre-eminently suited for use as an adjuvant in oils and fuels.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: June 24, 2003
    Assignee: Akzo Nobel N.V.
    Inventors: Klaus Ihrig, Manfred Josef Bergfeld, Ulrich Wecker
  • Publication number: 20030114603
    Abstract: Oxidized waxes which are prepared by oxidizing polyolefins obtained by single-site catalysis of transition metal complexes from groups 5 to 8 of the Periodic Table of the Elements and have a molecular weight Mw in the range from 1000 to 40,000 g/mol.
    Type: Application
    Filed: December 16, 2002
    Publication date: June 19, 2003
    Inventors: Shahram Mihan, Andreas Deckers
  • Patent number: 6579950
    Abstract: A rubber waste disposal apparatus processing rubber waste such as an old tire efficiently includes a casing, a rubber waste deformation unit provided in the casing to subject rubber waste to deformation, and an ozone-containing gas supply unit supplying ozone-containing gas into the casing. The rubber waste deformation unit includes a pair of cylindrical rollers having a plurality of protrusions projecting outwards, capable of sandwiching rubber waste at the gap therebetween, and a distance setting unit that can set the distance of the gap between the cylindrical rollers.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: June 17, 2003
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Kazuyuki Nishioka, Kiyoshige Muraoka, Jun Nishibayashi
  • Patent number: 6550915
    Abstract: Hydrogen-plasma modification of a contact lens made from a fluorinated polymer reduces the surface chemistry of by removing fluorine, leaving behind a carbon-enriched surface that is further plasma processed into a hydrophilic surface for a lens material to be inserted into the ocular environment.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: April 22, 2003
    Assignee: Bausch & Lomb Incorporated
    Inventor: George L. Grobe, III
  • Publication number: 20030055170
    Abstract: A method of processing polyethylene for use as an extruded blow molding resin to improve the properties and processability thereof is accomplished by modifying a polyethylene resin having a molecular weight distribution (Mw/Mn) of less than about 10. The modification is carried out by the addition of a free radical initiator to the resin during extrusion of the resin to increase the rheological breadth of the polyethylene from about 10% to about 60% compared to unmodified polyethylene resin extruded under similar conditions. In another aspect of the invention, a polyethylene resin having higher melt index is processed to provide a desired final melt index by the addition of a free radical initiator where it would otherwise be necessary to utilize a resin having lower melt flow, and which is more difficult to process.
    Type: Application
    Filed: June 13, 2002
    Publication date: March 20, 2003
    Inventors: Gerhard K. Guenther, Lea Ann Naim, Curtis D. Clark, Ben W. Hicks, Ronald A. Tharappel, Tim J. Coffy
  • Publication number: 20030032746
    Abstract: Hetero-telechelic polymers having the formula:
    Type: Application
    Filed: June 21, 2002
    Publication date: February 13, 2003
    Inventors: James A. Schwindeman, Robert J. Letchford, Conrad W. Kamienski, Roderic P. Quirk
  • Publication number: 20020132930
    Abstract: This invention provides a method for purification of a vinyl polymer which comprises the atom transfer radical polymerization of a vinyl monomer using a transition metal complex as the polymerization catalyst, said vinyl polymer being brought into contact with an oxidizing agent or a reducing agent.
    Type: Application
    Filed: August 24, 2001
    Publication date: September 19, 2002
    Inventors: Nao Fujita, Kenichi Kitano, Yoshiki Nakagawa
  • Patent number: 6420490
    Abstract: A low molecular weight, telechelic polymer containing polar internal functionality is produced by (a) treating a copolymer of a polar alpha olefin and a conjugated diene with ozone to degrade the copolymer and form polymer segments which have aldehyde or ketone groups on the chain ends, wherein the copolymer has a random distribution of predominantly 1,4-diene double bonds and the pendant functional groups of the polar alpha olefin are stable to ozone, and (b) further reacting the aldehyde or ketone end groups to provide terminal functionality. The terminal functionality which can be provided includes carboxylic acid groups, primary hydroxyl groups, and amide groups.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: July 16, 2002
    Assignee: KRATON Polymers U.S. LLC
    Inventor: Donn Anthony DuBois
  • Patent number: 6384148
    Abstract: The present invention relates to polymer oxidates prepared by reacting polyethylene which has been obtained using metallocene catalysts and which has a weight-average molar mass above 40,000 g/mol with oxygen or oxygen-containing gas mixtures. These polymer oxidates have high suitability for preparing aqueous dispersions, as a material added when dispersing pigments in masterbatches, or for surface-modification or for polar modification of polyolefins. Another advantageous application sector is use as an additive, e.g. as a lubricant for plastics processing.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: May 7, 2002
    Assignee: Clariant GmbH
    Inventors: Hans-Friedrich Herrmann, Gerd Hohner
  • Patent number: 6362286
    Abstract: A method for reducing the molecular weight of olefin copolymers comprises contacting an olefin copolymer and a base oil containing less than about 0.05 wt. % sulfur in the presence of oxygen and at a temperature of at least about 60° C.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: March 26, 2002
    Assignee: Exxon Chemical Patents Inc.
    Inventors: James Macfarlane Gardiner, Keith James Fenner, Ralph Joseph Spohn, Gary W. Ver Strate
  • Patent number: 6348547
    Abstract: Oxidized waxes are obtainable by oxidation of polyolefins obtainable by means of metallocene catalysis and having a molecular weight Mw in the range from 1000 to 40,000 g/mol.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: February 19, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Deckers, Arend Jouke Kingma, Ulrich Moll, Wilhelm Weber
  • Patent number: 6211303
    Abstract: The present invention relates to a process for the oxidation, in the melt by means of oxygen or oxygen-containing gas mixtures, of ethylene homopolymer and copolymer waxes prepared using metallocene catalysts, wherein the oxidation of the polyethylene wax is carried out with addition of monobasic or polybasic inorganic acids or monobasic or polybasic carboxylic acids having from 1 to 6 or from 2 to 6 carbon atoms. The process gives waxes having a low melt viscosity and a light color.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: April 3, 2001
    Assignee: Clariant GmbH
    Inventor: Gerd Hohner
  • Patent number: 6169148
    Abstract: A process for preparing oxidized polyolefin waxes by reacting polyolefin waxes with oxygen or oxygen-containing gases at from 140 to 200° C. and at pressures of from 5 to 200 bar involves conducting the oxidation reaction continuously in a tube reactor but excludes the reaction of polyolefins prepared by metallocene catalysis.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: January 2, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Deckers, Wilhelm Weber, Dietmar Ebisch
  • Patent number: 6160054
    Abstract: Hetero-telechelic polymers having the formula:FG--(Q).sub.d --Z--J--[A(R.sup.1 R.sup.2 R.sup.3)].sub.x (I)wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hydrocarbons, alkenylsubstituted aromatic hydrocarbons, and mixtures thereof; d is an integer from 10 to 200; Z is a branched or straight chain hydrocarbon group which contains 3-25 carbon atoms, optionally containing aryl or substituted aryl groups; J is oxygen, sulfur, or nitrogen; [A(R.sup.1 R.sup.2 R.sup.3)].sub.x is a protecting group, wherein A is an element selected from Group IVa of the Periodic Table of Elements; R.sup.1, R.sup.2, and R.sup.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: December 12, 2000
    Assignee: FMC Corporation
    Inventors: James A. Schwindeman, Robert J. Letchford, Conrad W. Kamienski, Roderic P. Quirk
  • Patent number: 6147167
    Abstract: A process for producing a polyethylene film composition, comprising melt extruding a linear copolymer of ethylene and at least one other olefin having from 3 to 8 carbon atoms, said linear copolymer having a bimodal distribution comprising a high molecular weight fraction having a weight average molecular weight of at least 600,000 and a low molecular weight fraction having a weight average molecular weight of less than 20,000 at a temperature of from 195 to 285.degree. C. in the presence of oxygen in an amount of from about 0.5 to about 6% by volume to improve bubble stability without any significant reduction in tear strength of film produced from said melt extruded linear copolymer.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: November 14, 2000
    Assignee: Equistar Chemicals, LP
    Inventors: Mark P. Mack, James H. Meas, Jr., Paula L. Nygard, Lawrence R. Wallace, Philip J. Garrison
  • Patent number: 6060565
    Abstract: A process is described for preparing oxidized polyethylene waxes by oxidizing such waxes with oxygen or oxygen-containing gases at from 120 to 250.degree. C. under a pressure of from 1 to 200 bar, which involves conducting the oxidation reaction in the presence of an ethylene-(meth)acrylic acid copolymer.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: May 9, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Deckers, Hugo Bruderle, Volker Sessig