Lactam Monomer Patents (Class 526/264)
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Patent number: 6521730Abstract: 1) Hydrophilic fluoropolymers obtained by radical polymerization, in a precipitating medium, of a mixture of monomers composed of at least one monomer with a perfluoroalkyl side chain, of one or more ionic or ionizable hydrophilic monomer(s) and optionally of one or more nonionic hydrophilic monomer(s). 2) Use of these polymers as dispersants or thickeners and as additives in multipurpose fire-fighting emulsifiers.Type: GrantFiled: January 23, 2001Date of Patent: February 18, 2003Assignee: E.I. du Pont de Nemours and CompanyInventors: Martial Pabon, Elisabeth Morillon, Jean-Marc Corpart
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Publication number: 20030027961Abstract: The invention relates to a process for producing water-soluble or water-swellable polymer products with low levels of residual monomers using acrylic acid and/or acrylic acid derivatives, which process is characterized by adding a nitrogen compound to the monomer solution to be polymerized and subsequent heating of the polymer product at temperatures of from 120 to 240° C. The polymers produced accordingly are suitable for use as flocculants, dispersants and absorbents.Type: ApplicationFiled: October 1, 2002Publication date: February 6, 2003Applicant: Stockhausen GmbH & Co. KGInventors: Miroslav Chmelir, Kurt Dahmen
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Publication number: 20030023003Abstract: The purpose of the present invention is to provide polymerization catalyst which can produce quite efficiently (co)polymer having number average molecular weight and number of molecules which are accurately controlled in producing method of (co)polymer by the polymerization of polar unsaturated compound, and provide living polymerized (co)polymer obtained according to the producing method. For the purpose, polymerization catalyst composition which comprises the composition comprising organic oxysalt compound and hydroxycarbonyl compound having at least both an alcoholic hydroxyl group and a carbonyl group in the same molecule is provided and the polar unsaturated compound is polymerized by using the polymerization catalyst composition. The composition containing the obtained (co)polymer were able to provide thermosetting powder coating composition having particularly excellent characteristics.Type: ApplicationFiled: June 12, 2002Publication date: January 30, 2003Inventors: Tadahito Nobori, Katsuhiko Funaki, Atsushi Shibahara, Makoto Suzuki, Kazumi Mizutani, Hiromi Jouyama, Isao Hara, Takaomi Hayashi, Shinji Kiyono, Setsuko Fujiyoshi
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Patent number: 6512062Abstract: A method of forming a water soluble polymer comprises polymerizing a non-fluorinated monomer in a reaction medium comprising carbon dioxide to form a water soluble polymer, wherein the polymerization is carried out in the presence of a surfactant that stabilizes the water soluble polymer in the reaction medium.Type: GrantFiled: April 7, 2000Date of Patent: January 28, 2003Assignees: The University of North Carolina at Chapel Hill, North Carolina State UniversityInventors: Joseph M. DeSimone, Terri J. Carson, Hiroshi Shiho, Jeremy Lizotte
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Patent number: 6512066Abstract: A two-step, base-catalyzed process for making crosslinked polyvinylpyrrolidone (PVP-P) having a low swell volume is disclosed. A crosslinker is generated “in situ” in the first step by heating a basic aqueous mixture containing a relatively low concentration of N-vinylpyrrolidone under added inert gas pressure. In a second step, the reactor temperature is reduced to initiate polymerization. The process is a productive way to make PVP-P that is easy to isolate and purify. The polymer has a swell volume less than about 40 mL H2O/10 g polymer, which makes it valuable for beverage clarification.Type: GrantFiled: February 14, 2002Date of Patent: January 28, 2003Assignee: Arco Chemical Technology, L.P.Inventors: Beth M. Steinmetz, Robert M. Arrell
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Publication number: 20030018137Abstract: A process for the preparation of a reaction product (A), which comprises the following stage (i):Type: ApplicationFiled: June 13, 2002Publication date: January 23, 2003Inventors: Roman Benedikt Raether, Bernd Modery, Frank Braun, Susanne Brinkmann-Rengel, David Christie, Sylke Haremza
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Publication number: 20030018152Abstract: Proposals are made for a process for preparing polymer solutions and/or polymer dispersions by free-radical addition polymerization and for the use of the polymers prepared, particularly as gas hydrate inhibitors.Type: ApplicationFiled: August 27, 2002Publication date: January 23, 2003Inventors: Maximilian Angel, Stefan Stein, Karin Neubecker
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Publication number: 20030017125Abstract: A reshapable hair styling composition comprising heterogeneous (meth)acrylic copolymer particles, said particles being the same or different and comprising at least one (meth)acrylic copolymer comprising: (a) units derived from at least one monomer chosen from (meth)acrylate esters of branched and straight chain alkyl alcohols, (b) units derived from at least one monomer chosen from (meth)acrylate esters of saturated and unsaturated cyclic alcohols containing 6 to 20 carbon atoms, (c) optionally units derived from at least one monomer chosen from hydrophilic monomers, and (d) optionally units derived from at least one monomer other than (a), (b), and (c) monomers, wherein said composition provides a reshapable effect.Type: ApplicationFiled: June 22, 2001Publication date: January 23, 2003Inventors: Isabelle Rollat, Henri Samain, Ollvier Morel
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Publication number: 20030008993Abstract: A process of making a vinyl caprolactam (VCL)-based polymer which comprises suspension polymerizing the monomers in aqueous medium in the absence of an added protective colloid, wherein polymer formed at an early stage of the polymerization functions as a dispersing agent to maintain polymer particles suspended in water throughout the polymerization.Type: ApplicationFiled: July 6, 2001Publication date: January 9, 2003Applicant: ISP INVESTMENTS INC.Inventors: Jui-Chang Chuang, Jenn S. Shih, Michael A. Drzewinski
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Publication number: 20030004241Abstract: The invention relates to the use of copolymers consisting essentially ofType: ApplicationFiled: April 16, 2002Publication date: January 2, 2003Applicant: Clariant GmbHInventors: Matthias Loffler, Roman Morschhauser, Peter Klug
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Publication number: 20020182348Abstract: The present invention provides a water-soluble film which comprises a modified polyvinyl alcohol containing an N-vinylamide monomer unit in an amount of 1 to 10 mole percent, and a carboxyl group and a lactone group in a total amount of 0.020 to 4.0 mole percent in the molecule, and having a degree of polymerization of 300 to 3000, and a degree of hydrolysis of 75 to 99.5 mole percent. Further, the present invention provides a package obtained by packaging an acidic substance, a chlorine-containing compound, or the like using the water-soluble film.Type: ApplicationFiled: April 16, 2002Publication date: December 5, 2002Applicant: KURARAY CO., LTD.Inventors: Naoki Fujiwara, Shintaro Hikasa, Takanori Isozaki
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Patent number: 6489422Abstract: Use of neutralized or partially neutralized copolymers obtainable from A) from 50 to 99% by weight of monoethylenically unsaturated carboxylic acid and B) from 1 to 50% by weight of at least one comonomer chosen from the groups a) to d) or also mixtures of different monomers from groups a) to d) a) monoethylenically unsaturated carboxylic acid esters with a saturated C8- to C30-alcohol b) N-alkyl- or N,N-dialkyl-substituted carboxamides, the alkyl radicals independently of one another being aliphatic or cycloaliphatic alkyl radicals having at least 8 to 18 carbon atoms, c) vinyl esters of aliphatic C8- to C30-carboxylic acids, d) C8- to C18-alkyl vinyl ethers, for the preparation of hair cleansers.Type: GrantFiled: March 14, 2002Date of Patent: December 3, 2002Assignee: BASF AktiengesellschaftInventors: Helmut Meffert, Kristin Tiefensee
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Patent number: 6486281Abstract: A process for preparing a high purity vinylpyrrolidone polymer which dissolves clearly in an organic solvent can be provided. The process for preparing a high purity vinylpyrrolidone polymer, wherein vinylpyrrolidone is polymerized by using a redox initiator comprising an organic peroxide and a sulfite, and thereafter the product is contacted with an anion exchange resin to be purified.Type: GrantFiled: August 24, 2001Date of Patent: November 26, 2002Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.Inventors: Akira Kitada, Keiichi Fujise, Itsuko Hamaguchi
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Publication number: 20020173608Abstract: A vinylpyrrolidone polymer which is little colored, gives off a bad smell little, and contains extremely little impurities is provided. The polymerization is performed by adding a water-soluble organic peroxide and a sulfite to a vinylpyrrolidone aqueous solution.Type: ApplicationFiled: August 3, 2001Publication date: November 21, 2002Inventors: Akira Kitada, Keiichi Fujise, Itsuko Hamaguchi
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Publication number: 20020165324Abstract: Cross-linked copolymers which are obtained by polymerising a neutral diluent monomer or monomers, a monomer or monomers bearing a center of permanent positive charge, and a bifunctional and/or trifunctional cross-linking agent, are suitable for use in contact lenses. Process for producing them by copolymerisation, contact lens material comprising them, contact lenses made of them and processes for producing contact lenses from them.Type: ApplicationFiled: February 28, 2002Publication date: November 7, 2002Applicant: BIOCOMPATIBLES LIMITEDInventors: Roderick William Jonathon Bowers, Peter William Stratford, Stephen Alister Jones
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Publication number: 20020151666Abstract: The present invention provides novel bicyclic photoresist monomers, and photoresist copolymer derived from the same.Type: ApplicationFiled: May 15, 2002Publication date: October 17, 2002Applicant: Hyundai Electronics Industries Co., Ltd.Inventors: Min Ho Jung, Jae Chang Jung, Geun Su Lee, Ki Ho Baik
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Patent number: 6465591Abstract: A polymer useful in forming coatings for articles is provided. The polymer is an acrylic copolymer formed as the reaction product of a plurality of monomers which include an alkyl (meth)acrylate, a quaternary amine (meth)acrylate, a hydroxyalkyl (meth)acrylate, an N-vinyl lactam, an ethylenically unsaturated carboxylic acid, and a fluorinated (meth)acrylate. The polymer is formed in the presence of surfactants, preferably by sequential polymerization of two separate monomer mixtures. To form a coating, the polymer is blended with an elastomeric material such as nitrile rubber latex. The resulting coating is useful both as a print coating for substrates used with ink jet printers and as a coating for rubber articles.Type: GrantFiled: April 24, 2000Date of Patent: October 15, 2002Assignee: Avery Dennison CorporationInventor: Ivan S. Lee
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Patent number: 6465593Abstract: Hydrophilic coatings for implants are disclosed. The coatings are hydrophobically bound to the implant, but are not covalently cross-linked or covalently anchored to the implant's surface.Type: GrantFiled: March 6, 2002Date of Patent: October 15, 2002Assignee: Alcon Universal Ltd.Inventor: Albert R. LeBoeuf
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Patent number: 6465590Abstract: The present invention relates to telechelic polymers having crosslinkable end groups of the formula and methods for preparing the same wherein n is an integer; is an alkadienyl group; Y is an alkyl group; and Z is crosslinkable end group. In general, the inventive synthesis involves reacting a functionalized chain transfer agent having crosslinkable ends with a cycloalkene in the presence of a ruthenium or osmium catalyst of the formula wherein: M is ruthenium or osmium; X and X1 are independently any anionic ligand; L and L1 are any neutral electron donor ligand; R and R1 are each hydrogen or a substituted or unsubstituted substituent wherein the substituent is selected from the group consisting of C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, aryl, C1-C20 carboxylate, C1-C20 alkoxy, C2-C20 alkenyloxy, C2-C20 alkynyloxy, aryloxy, C2-C20 alkoxycarbonyl, C1-C20 alkylthio, C1-C20 alkylsulfonyl and C1-C20 alkylsulfinyl.Type: GrantFiled: March 17, 1999Date of Patent: October 15, 2002Assignee: California Institute of TechnologyInventors: Bob R. Maughon, Takeharu Morita, Robert H. Grubbs
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Patent number: 6465592Abstract: A vinylpyrrolidone polymer which is little colored, gives off a bad smell little, and contains extremely little impurities is provided. The polymerization is performed by adding a water-soluble organic peroxide and a sulfite to a vinylpyrrolidone aqueous solution.Type: GrantFiled: August 3, 2001Date of Patent: October 15, 2002Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.Inventors: Akira Kitada, Keiichi Fujise, Itsuko Hamaguchi
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Publication number: 20020143129Abstract: The present invention relates to a process for the preparation of thermoprecipitating affinity polymers useful in the enhanced recovery of enzymes. The process comprises polymerising a monomer comprising a spacer and a co-monomer with a polymerisation initiator and a polymerisation accelerator at ambient temperature and pressure for a period ranging between 2 to 24 hours to obtain a polymer and then linking an inhibitor to pendant carboxyl groups of the spacers in the polymer to obtain an affinity polymer.Type: ApplicationFiled: March 11, 2002Publication date: October 3, 2002Applicant: Council of Scientific and Industrial ResearchInventors: Alankar Arun Vaidya, Bhalchandra Shripad Lele, Mohan Gopalkrishna Kulkarni, Raghunath Anant Mashelkar
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Publication number: 20020137866Abstract: Hydrophilic coatings for implants are disclosed. The coatings are hydrophobically bound to the implant, but are not covalently cross-linked or covalently anchored to the implant's surface.Type: ApplicationFiled: March 6, 2002Publication date: September 26, 2002Inventor: Albert R. LeBoeuf
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Patent number: 6451892Abstract: A composition for preventing or retarding the formation of gas hydrates during the transport of a fluid comprising water and a hydrocarbon through a conduit. The composition is a homopolymer of vinyl caprolactam, or copolymers thereof, having a low molecular weight in the range of 500 to 2500, which is made in a polymerization solvent, preferably a glycol ether, most preferably 2-butoxyethanol and also including a carrier solvent, preferably monoethylene glycol.Type: GrantFiled: July 13, 1999Date of Patent: September 17, 2002Assignee: ISP Investments Inc.Inventors: Kirill N. Bakeev, Kevin Harris, Carl B. Argo, Michael A. Drzewinski, David E. Graham
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Patent number: 6448352Abstract: The present invention provides novel bicyclic photoresist monomers, and photoresist copolymer derived from the same. The bicyclic photoresist monomers of the present invention comprise both amine functional group and acid labile protecting group, and are represented by the formula: where m, n, R, V and B are those defined herein. The photoresist composition comprising the photoresist copolymer of the present invention has excellent etching resistance and heat resistance, and remarkably enhanced PED stability (post exposure delay stability).Type: GrantFiled: July 21, 2000Date of Patent: September 10, 2002Assignee: Hyundai Electronics Industries Co., Ltd.Inventors: Min Ho Jung, Jae Chang Jung, Geun Su Lee, Ki Ho Baik
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Patent number: 6437068Abstract: Water-soluble or water-swellable crosslinked copolymers consisting essentially of structural units of the formula 1 or a mixture of the structural units of the formula 1 with structural units of the formula 2 and structural units of the formula 3 where R, R1, R2, R3, Z and n are as defined in the description. These copolymers are crosslinked with compounds which contain at least two olefinic double bonds. These crosslinked copolymers are suitable as thickeners, in particular for cosmetic and pharmaceutical preparations.Type: GrantFiled: January 11, 2001Date of Patent: August 20, 2002Assignee: Clariant GmbHInventors: Matthias Löffler, Roman Morschhäuser
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Patent number: 6423805Abstract: The open time of a cementitious composition, such as a grout, may be increased by the incorporating therein, as a binder, a polymer composition comprising a film-forming copolymer formed by polymerization of a monomer mixture comprising 1 to 3% of at least one monomer selected from the group of monomers consisting of amides of &agr;,&bgr;-unsaturated C3 to C6 carboxylic acids and at least one hydroxy-(C1 to C8)alkyl (meth)acrylate monomer, wherein the total amount of these monomers is from 2 to 7.5% by weight of said monomer mixture.Type: GrantFiled: April 17, 2000Date of Patent: July 23, 2002Assignee: Rohm and Haas CompanyInventors: Anne Margaret Bacho, Frederick Paul Hinz, Mark Alan Kesselmayer, Kathleen Anne Koziski, Meredith Ann Morgan, Lori Branham Pfahler, Fergus Stuart McColl
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Patent number: 6417306Abstract: The present invention provides: a transparent heat-resistant resin that has a small amount of both the residual maleimide monomer and the maleimide monomer generated by heating in order to carry out such as a mold processing, and further, is excellent in heat resistance and yellowish little; a production process therefor; and a resin composition utilizing this resin. The transparent heat-resistant resin, according to the present invention, is obtained by a process including the step of running a polymerization of comonomers including a maleimide monomer and a methacrylic acid ester monomer, wherein the amount of the residual maleimide monomer in the resin is not more than 10× ppm when the amount of a structural unit derived from the maleimide monomer is X weight % in the resin, and the amount of the generated maleimide monomer by heating the resin at 240° C.Type: GrantFiled: November 28, 2000Date of Patent: July 9, 2002Assignee: Nippon Shokubai Co., Ltd,Inventors: Kenichi Ueda, Tomomi Makino, Minoru Yamaguchi
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Publication number: 20020086965Abstract: A process for preparing nitrogen-containing copolymers useful as dispersant-viscosity improvers for lubricating oil compositions, additive concentrates and lubricating oil compositions are described.Type: ApplicationFiled: October 23, 2001Publication date: July 4, 2002Inventors: Matthew R. Sivik, Charles P. Bryant
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Patent number: 6406828Abstract: Disclosed are polymers including as polymerized units one or more spirocyclic olefin monomer of the formulae I or Ia wherein A=CH2; G=C(Z′), O, and NR2; R2=H, (C1-C8)alkyl or substituted (C1-C8)alkyl; E and W are independently selected from C(Z′), O and a chemical bond; Z′=O; n=1; m=1; m′=0; 1=0 to 5; and p=0 to 5; provided that when both E and W are C(Z′), G is NR2; wherein T and L are taken together to form a double bond. These polymers are useful in photoresist compositions. Methods of making and using these polymers are also disclosed.Type: GrantFiled: February 24, 2000Date of Patent: June 18, 2002Assignee: Shipley Company, L.L.C.Inventors: Charles R. Szmanda, George G. Barclay, Peter Trefonas, III, Wang Yueh
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Publication number: 20020064558Abstract: A copolymer comprising a monomer of formula (1) below and a monomer having a basic functional group copolymerizable with the monomer as monomer components, wherein molar ratio of the monomer of formula (1) to the monomer having a basic functional group is 85/15 to 99.9/0.1 and wherein the copolymer has a number based mean molecular weight of 5,000 to 500,000. The copolymer is excellent in antithrombotic activity and further in biocompatibility and can be used as a medial material having high hydrophilicity. It also can serve as an antithrombotic surface treating agent.Type: ApplicationFiled: September 26, 2001Publication date: May 30, 2002Inventors: Masaru Tanaka, Shoji Ochiai, Norifumi Tokunaga, Yukiko Irie
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Patent number: 6391994Abstract: The present invention provides a production process for a vinylpyrrolidone polymer which process prevents the polymerization reaction of N-vinylpyrrolidone from being hindered by by-products (as formed by nucleomethylation of N-vinylpyrrolidone) or &ggr;-butyrolactone, and therefore enables to obtain a vinylpyrrolidone polymer that has a desired molecular weight and involves only a small amount of residual monomers, wherein the vinylpyrrolidone polymer can display excellent properties even if the vinylpyrrolidone polymer is, for example, crosslinked to convert it into a water-absorbent resin. The production process for a vinylpyrrolidone polymer comprises the step of polymerizing a polymerizable monomer component or components which include N-vinylpyrrolidone, wherein: the N-vinylpyrrolidone as used is N-vinylpyrrolidone having a &ggr;-butyrolactone content of not more than 500 ppm; and/or the N-vinylpyrrolidone as used is N-vinylpyrrolidone obtained without using acetylene as a raw material.Type: GrantFiled: January 31, 2001Date of Patent: May 21, 2002Assignee: Nippon Shokubai Co., Ltd.Inventors: Daijo Tomihisa, Nobuyuki Harada, Akio Naka, Toshiaki Kuriyama, Yuuji Shimasaki, Hideyuki Nishibayashi
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Patent number: 6388035Abstract: Hydrophilic coatings for implants are disclosed. The coatings are hydrophobically bound to the implant, but are not covalently cross-linked or covalently anchored to the implant's surface.Type: GrantFiled: August 24, 2000Date of Patent: May 14, 2002Assignee: Alcon Universal Ltd.Inventor: Albert R. LeBoeuf
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Patent number: 6380137Abstract: The invention provides water-soluble copolymers without crosslinking, consisting of the following components: A 5-95% by weight of bivalent structural units derived from acrylamidopropenylmethylenesulfonic acid or its salts, B 1-45% by weight of bivalent structural units derived from open-chain N-vinylamides, C 1-45% by weight of bivalent structural units derived from cyclic N-vinyl-substituted amides, and if desired D 0-50% by weight of a further comonomer selected from the group consisting of acrylamide, acrylic acid and acrylonitrile, the components A to C and, if present, D adding up to 100% by weight.Type: GrantFiled: March 2, 2000Date of Patent: April 30, 2002Assignee: Clariant GmbHInventors: Karl Heinz Heier, Roman Morschhäuser, Aranka Tardi, Susanne Weber, Gernold Botthof
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Publication number: 20020049290Abstract: Optically transparent, high refractive index hydrogels and intraocular lenses fabricated therefrom. The preferred hydrogels have a refractive index of 1.45 or above and a water content of approximately 5 to 30 percent by weight.Type: ApplicationFiled: October 10, 2001Publication date: April 25, 2002Inventor: David P. Vanderbilt
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Patent number: 6376631Abstract: The present invention relates to processes for making polymers from at least one tertiary amino-containing monomer and at least one vinyl-functional monomer, while controlling residual monomers and avoiding production of Michael addition adducts. The process employs one or more of the following steps to avoid such adducts, maintaining at least one tertiary amino-containing monomer and at least one vinyl-functional monomer separate until the polymerization reaction, maintaining the at least one tertiary amino-containing monomer and at least one vinyl-functional monomer free of water until the polymerization reaction, and employing high temperatures for the polymerization reaction. The polymers are useful in personal care products, fabric detergent, hand dishwashing detergent, oil well treating chemicals, fire-fighting foam, agricultural chemicals, flocculants, coagulants, and household cleaners.Type: GrantFiled: September 27, 2000Date of Patent: April 23, 2002Assignee: Rhodia, Inc.Inventors: Dominic Wai Kwing Yeung, Leo Zhaoqing Liu, Richard E. Rice
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Patent number: 6376636Abstract: Modular, energy-dissipating material prevents failure of adhesives, fibers and composite and other structures. The modules comprise folded subunits or domains that unfold in a stepped fashion at forces below that necessary to break the backbone of the material and, with adhesive material, below that necessary to break the bonds that fasten the material to surfaces being glued.Type: GrantFiled: October 28, 1999Date of Patent: April 23, 2002Assignee: The Regents of the University of CaliforniaInventors: Paul K. Hansma, Johannes Kindt, Timothy J. Deming, Daniel E. Morse, Galen D. Stucky
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Publication number: 20020042484Abstract: Optically transparent, high refractive index hydrogels and intraocular lenses fabricated therefrom. The preferred hydrogels have a refractive index of 1.45 or above and a water content of approximately 5 to 30 percent by weight.Type: ApplicationFiled: October 10, 2001Publication date: April 11, 2002Inventor: David P. Vanderbilt
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Publication number: 20020042483Abstract: Optically transparent, high refractive index hydrogels and intraocular lenses fabricated therefrom. The preferred hydrogels have a refractive index of 1.45 or above and a water content of approximately 5 to 30 percent by weight.Type: ApplicationFiled: October 10, 2001Publication date: April 11, 2002Inventor: David P. Vanderbilt
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Patent number: 6369180Abstract: A process of making a homopolymer of vinyl caprolactam (VCL), and a copolymer with dimethylaminopropyl methacrylamide (DMAPMA), optionally including with one or more polymerizable monomers (X), in the composition range, by weight, VCL 99 to 30%, DMAPMA 1-70% and monomer X 0-30%, respectively, by suspension polymerization in an aqueous/alcoholic solvent medium, without requiring a protective colloid, which comprises charging vinyl caprolactam in an aqueous/alcoholic solvent mixture, wherein the weight ratio of alcohol to total monomers is ⅙ to 3, and if present, forming a solution of DMAPMA and optional monomers in water, feeding the solution into the VCL charge at a predetermined rate, periodically adding initiator to the reaction mixture, and polymerizing at about 40° to 130° C., and, if desired, neutralizing the product, to form a polymer product at about 5% to 40% solids, homogeneously dispersed in the solvent.Type: GrantFiled: August 18, 2000Date of Patent: April 9, 2002Assignee: ISP Investments Inc.Inventors: Jenn S. Shih, Donald I. Prettypaul, John Mc Kittrick, David E. Graham
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Patent number: 6369165Abstract: A process for preparing polymers of N-vinyl compounds comprises polymerizing the vinyl compounds in the presence of free radicals of the formula I where Q is NR2 or S and T is CR3R4 or S and R1, R2, R3 and R4 can be identical or different and are, independently of one another, hydrogen, C1-C20-alkyl or C6-C18-aryl.Type: GrantFiled: August 16, 2000Date of Patent: April 9, 2002Assignee: BASF Akiengesellschaft & Max-Planck-GesellschaftInventors: Roman Benedikt Raether, Wolfgang Paulus, Frank Braun, Klaus Müllen, Markus Klapper, Marco Steenbock
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Patent number: 6359128Abstract: Free-flowing flakes of vinyl caprolactam monomer usable below its melting point of 34° C. without developing coloration.Type: GrantFiled: July 18, 2000Date of Patent: March 19, 2002Assignee: ISP Investments Inc.Inventors: Arvind M. Mathur, James A. Dougherty, Philip F. Wolf
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Patent number: 6350841Abstract: This invention relates to underfill encapsulant compositions prepared from allylated amide compounds to protect and reinforce the interconnections between an electronic component and a substrate in a microelectronic device.Type: GrantFiled: June 7, 2001Date of Patent: February 26, 2002Assignee: National Starch and Chemical Investment Holding CorporationInventors: Rose Ann Schultz, Donald Herr, Chaodong Xiao
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Patent number: 6350838Abstract: A curable composition for encapsulating an electronic component comprises one or more mono- or polyfunctional maleimide compounds, or one or more mono- or polyfunctional vinyl compounds other than maleimide compounds, or a combination of maleimide and vinyl compounds, with a free radical curing agent, and optionally, one or more fillers.Type: GrantFiled: June 28, 2001Date of Patent: February 26, 2002Assignee: National Starch and Chemical Investment Holding CorporationInventors: Bodan Ma, Quinn K. Tong
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Publication number: 20020022700Abstract: A thermoplastic polymer having a carbonyl-containing group and a nitrogen-containing 5-membered heterocycle-containing group in side chains, and a composition thereof. The thermoplastic polymer and composition thereof have excellent recycle property in that physical properties do not deteriorate even though formation of crosslinking and dissociation of crosslinking are repeatedly conducted with altering temperature. The thermoplastic polymer and composition thereof are that its crosslinked structure is considerably stable at room temperature, and therefore have considerably high tensile strength. In particular, in the case of bonding to a main chain at 3-position or 4-position of a nitrogen-containing 5-membered heterocycle, intermolecular hydrogen bond is caused, so that a cured product has high mechanical properties.Type: ApplicationFiled: June 19, 2001Publication date: February 21, 2002Applicant: THE YOKOHAMA RUBBER CO., LTD.Inventors: Keisuke Chino, Makoto Ashiura, Tetsuji Kawazura, Masahiro Ikawa
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Patent number: 6342570Abstract: The present invention describes novel statistical copolymers and the preparation and possible uses thereof. Copolymers are described that are water-soluble and cross-linkable and that comprise the copolymerization product of a monomer mixture consisting substantially of a vinyl lactam (a) and at least one further vinyl monomer (b) of a different type selected from the group consisting of hydrophobic, hydrophilic and functional vinyl monomers, wherein the monomers are present in the copolymer in the form of statistically distributed building blocks, and, if a functional vinyl monomer is present as a building block in the copolymer, that building block is, where appropriate, modified with a reactive vinyl monomer (c), the reactive vinyl monomer (c) being linked to a building block of a functional vinyl monomer with retention of its vinylic group and with the formation of a covalent bond.Type: GrantFiled: March 26, 1999Date of Patent: January 29, 2002Assignee: Novartis AGInventors: Harald Bothe, Achim Müller, Bernhard Seiferling, Sharla Borghorst, John Golby, Peter Hagmann, Peter Herbrechtsmeier, Otto Kretzschmar
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Publication number: 20010056162Abstract: A curable composition for encapsulating an electronic component comprises one or more mono- or polyfunctional maleimide compounds, or one or more mono- or polyfunctional vinyl compounds other than maleimide compounds, or a combination of maleimide and vinyl compounds, with a free radical curing agent, and optionally, one or more fillers.Type: ApplicationFiled: June 28, 2001Publication date: December 27, 2001Inventors: Bodan Ma, Quinn K. Tong
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Patent number: 6331603Abstract: A process for preparing nitrogen-containing copolymers useful as dispersant-viscosity improvers for lubricating oil compositions, additive concentrates and lubricating oil compositions are described.Type: GrantFiled: July 16, 1998Date of Patent: December 18, 2001Assignee: The Lubrizol CorporationInventors: Matthew R. Sivik, Charles P. Bryant
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Patent number: 6329472Abstract: Water-soluble or water-dispersible graft copolymers in which a tert-butyl acrylate and a polymerizable carboxylic acid are grafted onto a polyvinyllactam, to their preparation and to their use, especially in the form of cosmetic preparations, particularly as hair-setting compositions.Type: GrantFiled: November 16, 1999Date of Patent: December 11, 2001Assignee: BASF AktiengesellschaftInventors: Son Nguyen Kim, Axel Sanner, Peter Hössel, Volker Schehlmann
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Patent number: 6329484Abstract: The present invention relates to novel low molecular weight, structured polymer compositions. The invention also relates to methods for inhibiting scale formation, precipitation or deposition; increasing dispersion of insoluble precipitates in process waters; treating cooling and boiler water; and reducing the viscosity of mineral slurries using the aforementioned polymer compositions.Type: GrantFiled: March 10, 2000Date of Patent: December 11, 2001Inventor: Janice E. LoSasso
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Patent number: 6326448Abstract: A soft intraocular lens material which consists essentially of a polymer obtained by polymerizing polymerizable components containing a hydrophilic monomer, and which has a water absorptivity of from 1.5 to 4.5 wt %.Type: GrantFiled: February 18, 1999Date of Patent: December 4, 2001Assignee: Menicon Co., Ltd.Inventors: Tatsuya Ojio, Kazuharu Niwa, Tohru Kawaguchi