Patents Examined by Christopher Henderson
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Patent number: 6506833Abstract: Water-soluble or water-swellable polymers, preferably having a particle size no greater than 10 &mgr;m, which, in addition to from 0.01 to 5% by weight of crosslinking structures originating from monomers having at least two olefinic double bonds, comprise, in random distribution, from 1 to 50% by weight of the repeat structural unit (1) and from 49.99 to 98.99% by weight of the repeat structural unit (2), in which R1, R2 and R3 independently of one another are a hydrogen atom or a methyl group, and Z is a C1-C4-alkylene group. These polymers are used as thickeners, preferably in cosmetic or pharmaceutical preparations.Type: GrantFiled: December 20, 2001Date of Patent: January 14, 2003Assignee: Clariant GmbHInventors: Peter Brungs, Mattias Löffler
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Patent number: 6500981Abstract: The present invention provides water soluble ethylenically unsaturated monomers selected from the group consisting of formula I and II wherein R1, R2, R3, R4, R5, and R6 are independently selected from the group consisting of hydrogen, and C1-C5 primary, secondary or tertiary lower alkyl group; B is a monovalent or multivalent metal selected from the group consisting of alkali metals, alkaline earth metals and transition metals; and x represents the stoichiometric valence requirement of the molecule. The invention also provides polymers and emulsions derived from the above monomers.Type: GrantFiled: August 2, 2000Date of Patent: December 31, 2002Assignee: Ethox Chemicals LLCInventor: Paul David Weipert
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Patent number: 6492466Abstract: The present invention is an improvement upon the known method of anionically polymerizing monomers by contacting the monomers with an anionic polymerization initiator which is an organo-substituted alkali metal compound. The improvement comprises decreasing the viscosity of the polymer cement by adding at least 0.01 equivalent of a metal alkyl compound per equivalent of alkali metal initiator if the metal alkyl is added before or at the beginning of polymerization. If the metal alkyl is added during the polymerization or after but before the living polymer is terminated, then at least 0.01 equivalent of the metal alkyl compound per equivalent of living polymer chain ends is should be used. The alkyl groups of the metal alkyl are chosen such that they do not exchange with the organo substituents of the alkali metal, which can be the living polymer chain ends or the organo substituents of the initiator.Type: GrantFiled: March 26, 2002Date of Patent: December 10, 2002Assignee: Kraton Polymers U.S. LLCInventors: Carl Lesley Willis, Robert Charles Bening, Peter Taylor Murany, Steven Jon Weddle, Dale Lee Handlin, Jr.
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Patent number: 6492454Abstract: A rubber composition having high adhesiveness to a metal, high modulus, high set resistance and high heat resistance, comprising raw material rubber, 2,4-dimercapto-6-substituted-1,3,5-triazine and a polymer having epoxy groups crosslinkable with the raw material rubber; a process for producing the rubber composition exhibiting adhesion stability, by controlling temperature of mixing step when crosslinking the rubber composition with an organic crosslinking agent; and a hose having excellent heat resistance and sufficient modulus and compression set resistance, wherein an inner tube and/or outer cover comprise the rubber composition and a reinforcing layer comprises brass-plated steel wires.Type: GrantFiled: March 31, 2000Date of Patent: December 10, 2002Assignee: The Yokohama Rubber Co., Ltd.Inventors: Osamu Ozawa, Tomoji Saitoh
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Patent number: 6492441Abstract: 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: December 11, 2001Date of Patent: December 10, 2002Assignee: Hyundai Electronics Industries Co., Ltd.Inventors: Sung-Eun Hong, Min-Ho Jung, Hyeong-Soo Kim, Ki-Ho Baik
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Patent number: 6492469Abstract: The present invention is an improvement upon the known method of anionically polymerizing monomers by contacting the monomers with an anionic polymerization initiator which is an organo-substituted alkali metal compound. The improvement comprises decreasing the viscosity of the polymer cement by adding at least 0.01 equivalent of a metal alkyl compound per equivalent of alkali metal initiator if the metal alkyl is added before or at the beginning of polymerization. If the metal alkyl is added during the polymerization or after but before the living polymer is terminated, then at least 0.01 equivalent of the metal alkyl compound per equivalent of living polymer chain ends is should be used. The alkyl groups of the metal alkyl are chosen such that they do not exchange with the organo substituents of the alkali metal, which can be the living polymer chain ends or the organo substituents of the initiator.Type: GrantFiled: March 26, 2002Date of Patent: December 10, 2002Assignee: Kraton Polymers U.S. LLCInventors: Carl Lesley Willis, Robert Charles Bening, Peter Taylor Murany, Steven Jon Weddle, Dale Lee Handlin, Jr.
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Patent number: 6492440Abstract: A product obtainable by 1) reacting a compound of the formula (&agr;) with a compound of the formula (&bgr;) in a molar ratio of 1.2:1 to 1.4:1; 2) reacting the end groups of the formula (&ggr;) being present in the product of the reaction 1) with e.g. dibutylamine in a molar ratio of 2:1.7 to 2:3; the reactions 1) and 2) being carried out in an organic solvent in the presence of an inorganic base; and 3) transferring the groups of the formula being present in the product of the reaction 2) to groups of the formula said transfer being carried out by reacting the product of the reaction 2) with a hydroperoxide in a hydrocarbon solvent in the presence of a peroxide decomposing catalyst. The products obtained are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers such as polyolefins.Type: GrantFiled: June 9, 2000Date of Patent: December 10, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: James Peter Galbo, Nicola Lelli, Valerio Borzatta, Jean-Pierre Wolf, Michael Ackerman, Piero Piccinelli, Ivan Orban
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Patent number: 6492453Abstract: Zero halogen polyolefin compositions exhibit low smoke emission, low corrosivity, low toxicity, and low heat release properties, as well as flame resistance and char formation, while simultaneously maintaining favorable electrical insulation properties. Such compositions are especially useful for coating wires and conductors employed in high-speed speed telecommunication data transmission cables.Type: GrantFiled: September 22, 2000Date of Patent: December 10, 2002Assignee: AlphaGary CorporationInventors: Shahzad Ebrahimian, Mark A. Jozokos
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Patent number: 6488983Abstract: An aqueous composition suitable for use, when dry, as an improved elastomeric coating, caulk, sealant, or pressure sensitive adhesive is provided including a predominantly acrylic aqueous emulsion polymer, the polymer having a glass transition temperature (Tg) from −90° C. to 20° C., formed by the free radical polymerization of at least one ethylenically unsaturated nonionic acrylic monomer and 0.5-5%, by weight based on the total weight of said polymer, ethylenically unsaturated carboxylic acid monomer until 90-99.7% of said monomers by weight, based on the total weight of said polymer, has been converted to polymer and subsequently at least half of the remaining monomer is converted to polymer in the presence of 0.1-1.0 wt %, by weight based on the total weight of said polymer, t-amyl hydroperoxide.Type: GrantFiled: May 6, 2002Date of Patent: December 3, 2002Assignee: Rohm and Haas CompanyInventor: Robert V. Slone
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Patent number: 6479606Abstract: The present invention relates to polymerizable compositions for the manufacture of optical lenses with a high refractive index and a high Abbe number, and optical lenses comprising these compositions.Type: GrantFiled: December 1, 1999Date of Patent: November 12, 2002Assignee: Essilor International Compagnie Generale d'OptiqueInventors: Peiqi Jiang, Gilles Widawski, Gilbert Menduni
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Patent number: 6479586Abstract: Phase change (hot melt) ink compositions for use in a phase change (hot melt) ink jet recording device in which recording is conducted by thermally melting the ink at a temperature above ambient temperature (20° C.) to provide prints that possess high quality images, scratch resistance, abrasion resistance, low-temperature storage stability and flexibility, offset and pick resistance, adhesion, and other desired properties are disclosed to comprise: (a) from about 0.1% to about 30% of one or more colorants; and (b) from about 0.1 to about 99.9% of one or more hybrid polymers. Components other than those listed above may be included in the ink compositions to achieve specific printer, substrate, or end use requirements.Type: GrantFiled: December 20, 2001Date of Patent: November 12, 2002Assignee: Westvaco CorporationInventor: Michael D. Matzinger
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Patent number: 6479622Abstract: In one aspect, the invention provides ene-thiol elastomers comprising the reaction product of a polythiol free of hydrophilic groups and having at least two thiol groups and an aromatic, heterocyclic, aliphatic, or cycloaliphatic polyene having at least two reactive unsaturated carbon to carbon bonds. In another aspect, the invention provides ene-thiol elastomer comprising the reaction product of (a) a thiol terminated oligomer comprising the reaction product of a polythiol having two thiol groups and a first polyene or mixture of polyenes having two reactive unsaturated carbon to carbon bonds; and (b) a second polyene or a mixture of polyenes having at least 5 percent functional equivalents of unsaturated carbon to carbon bonds from polyenes having at least three unsaturated carbon to carbon bonds. The ene-thiol elastomers of the invention have a weight increase of not more than 4 weight percent in 15 days at a temperature of 22° C.Type: GrantFiled: May 10, 2000Date of Patent: November 12, 2002Assignee: 3M Innovative Properties CompanyInventors: Kathleen B. Gross, William J. Schultz
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Patent number: 6479594Abstract: Sulfonated substantially random interpolymers made from monomer components comprise from 1 to 65 mole percent of (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinylidene monomer, or (c) a combination of at least one vinyl or vinylidene aromatic monomer and at least one hindered aliphatic or cycloaliphatic vinylidene monomer, and from 35 to 99 mole percent of at least one aliphatic &agr;-olefin having from 2 to 20 carbon atoms; and optionally, from 0 to 20 mole percent of a diene containing from 4 to 20 carbon atoms; wherein the sulfonated interpolymer contains at least one mer (or moiety) of a group represented by the formula —SO3−M where M is hydrogen or a group 1, 7 or 12 metal in ionic form or combination thereof. Blends of these polymers with polyamides and polyolefins are made.Type: GrantFiled: April 20, 2000Date of Patent: November 12, 2002Assignee: The Dow Chemical CompanyInventors: Yunwa W. Cheung, Stephen F. Hahn, James C. Stevens, Francis J. Timmers, Gregory F. Schmidt, Thoi H. Ho, Robert H. Terbrueggen
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Patent number: 6476146Abstract: Phase change (hot melt) ink compositions for use in a phase change (hot melt) ink jet recording device in which recording is conducted by thermally melting the ink at a temperature above ambient temperature (20° C.) to provide prints that possess high quality images, scratch resistance, abrasion resistance, low-temperature storage stability and flexibility, offset and pick resistance, adhesion, and other desired properties are disclosed to comprise: (a) from about 0.1% to about 30% of one or more colorants; and (b) from about 0.1 to about 99.9% of one or more hybrid polymers. Components other than those listed above may be included in the ink compositions to achieve specific printer, substrate, or end use requirements.Type: GrantFiled: December 20, 2001Date of Patent: November 5, 2002Assignee: Westvaco CorporationInventor: Michael D. Matzinger
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Patent number: 6476104Abstract: The present invention is directed to an antimicrobial hydrogel-forming absorbent polymer comprising a hydrogel-forming absorbent polymer, and an antimicrobial comprising a 1-hydroxy-2-pyrrolidone derivative represented by the formula (I); wherein R1 represents an alkyl group having 1-17 carbon atoms, alkenyl group having 2-17 carbon atoms, cycloalkyl group having 5-8 carbon atoms, bicycloalkyl group having 7-9 carbon atoms, cycloalkyl-alkyl group wherein the alkyl group has 1-4 carbon atoms and the cycloalkyl group may be substituted with an alkyl group having 1-4 carbon atoms, aryl group, aralkyl group with an alkyl group having 1-4 carbon atoms, aryl-alkenyl group with the alkenyl group having 2-4 carbon atoms, aryloxyalkyl or arylmercaptoalkyl group with the alkyl group having 1-4 carbon atoms, benzhydryl group, phenylsulfonylalkyl group with the alkyl group having 1-4 carbon atoms, furylalkenyl group with the furyl or alkenyl group having 2-4 carbon atoms, wherein the above-mentioned aryType: GrantFiled: July 28, 2000Date of Patent: November 5, 2002Assignee: The Procter & Gamble CompanyInventors: Reiko Nakamura, Kesyin Fugger Hsueh, Fernando Benvegnu, Kohtaro Fujioka
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Patent number: 6472481Abstract: Sulfur-functional polyorganosiloxanes corresponding to the general formula I with substituents as described in the specification, corresponding to the general formula I They can be used in rubber mixtures.Type: GrantFiled: October 26, 1999Date of Patent: October 29, 2002Assignee: Degussa AGInventors: Hans-Detlef Luginsland, Roland Krafczyk, Wolfgang Lortz
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Patent number: 6472479Abstract: The invention relates to sulfonated bead polymers prepared from styrene, vinylpyridines, further monomers, and crosslinkers, to a process for preparing them, and to their use as cation exchangers.Type: GrantFiled: August 17, 2000Date of Patent: October 29, 2002Assignee: Bayer AktiengesellschaftInventors: Burkhard Köhler, Rüdiger Seidel, Olaf Halle, Eckhard Wenz
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Patent number: 6472485Abstract: A process for the preparation of a thermoplastic resin, or thermoplastic resins comprising: forming, or providing a miniemulsion comprised of a mixture of an oligomeric compound of the formula R-SFR, wherein R is an oligomeric compound comprised of from about 1 to about 30 monomer units and optionally a covalently bonded free radical initiator compound, -SFR is a covalently bound stable free radical end group, and at least one free radical polymerizable monomer compound, and a surfactant; and heating the miniemulsion wherein there results a latex thermoplastic resin or a latex of thermoplastic resins with a high monomer to polymer conversion of about 85 to about 100 percent and a narrow polydispersity of from about 1.1 to about 2.0.Type: GrantFiled: October 12, 2001Date of Patent: October 29, 2002Assignee: Xerox CorporationInventors: Paula J. MacLeod, Peter G. Odell, Francisco E. Torres, Michael K. Georges
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Patent number: 6465587Abstract: The present invention relates to compositions and use of water-soluble or water-dispersible copolymers for oil field applications. Specifically, the present invention relates to polymers containing allyloxy linkage and its functional dervatives for use in oil field applications as fluid additives for drilling and cementing processes.Type: GrantFiled: December 8, 2000Date of Patent: October 15, 2002Assignee: Hercules IncorporatedInventors: Keith A. Bair, Fu Chen, Mohand Melbouci, Teng-Shau Young, De-Kai Loo
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Patent number: 6462110Abstract: The present invention provides a concrete admixture which is useful in the field of a highly strong concrete, which has a high flowability and which is excellent in an applicability of a concrete paste. That is, the present invention provides a concrete admixture comprising a copolymer-mixture obtained by copolymerizing a specific monomer (A) such as an ethylene-based unsaturated carboxylic acid-derivative having a polyoxyalkylene group and a specific monomer (B) such as a (meth)acrylic acid with changing the molar ratio of (A)/(B) at least one time in the polymerization course, as well as a concrete composition comprising the said concrete admixture.Type: GrantFiled: December 18, 2000Date of Patent: October 8, 2002Assignee: Kao CorporationInventors: Haruyuki Satoh, Haruya Mino, Tatsuo Izumi, Keishi Shimokawa