Pentavalent Phosphorus Is Bonded To At Least One Atom Of Carbon Patents (Class 526/278)
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Patent number: 6410671Abstract: The present invention relates to more or less substituted acrylamide or acrylate and zwitterion monomer hydrosoluble copolymers.Type: GrantFiled: April 13, 2001Date of Patent: June 25, 2002Assignee: Institute Francais du PetroleInventors: Jean-François Argillier, Annie Audibert-Hayet, Pierre Le Perchec, Pierre Louis Carrette
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Patent number: 6395259Abstract: A variety of phosphonylated heterochain polymers are disclosed, including, most preferably, phosphonylated polymethyl methacrylate. For each polymeric composition the phosphorous atom of a phosphorous-containing functional group is covalently bonded to a carbon atom of the polymeric chain. The phosphorous atoms are present in an amount of at least about 0.1 percent by weight in each polymeric composition.Type: GrantFiled: December 16, 1999Date of Patent: May 28, 2002Assignee: Poly-Med, Inc.Inventor: Shalaby W. Shalaby
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Patent number: 6387982Abstract: The invention provides a self etching adhesive dental primer composition, a method of use of the primer composition and a product formed from the primer. The dental product is formed from the primer composition which includes water, surfactant and polymerizable material in suspension in the water. The polymerizable material includes monomers which are water immiscible. Preferably the monomers have an average molecular weight less than 1000. The primer composition is used by applying the composition to unetched dental tooth enamel and the polymerizable material is polymerized to form a dental product having adhesion to the enamel of more than 13 MPa. Improved surfactants which contain at least one ethenically unsaturated polymerizable group are provided in accordance with the invention. Surfactants of the present invention copolymerize with and become an integral part of any polymerizable resin matrix in which they are incorporated.Type: GrantFiled: November 23, 1998Date of Patent: May 14, 2002Assignee: Dentsply DeTrey G.m.b.H.Inventor: Gordon Brian Blackwell
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Patent number: 6380349Abstract: The present invention relates to golf equipment, such as golf shoes, golf clubs, golf gloves, or portions thereof, formed from compositions comprising a sulfonated, carboxylated, or phosphonated acid moieties, or a mixture thereof. The preferred ionomer composition comprises sulfonated thermoplastic elastomers, sulfonated thermoplastic polymers, sulfonated thermoset polymers, and mixtures thereof. The compositions include a blend of about 1 weight % to about 99 weight % of at least one sulfonated, carboxylated, or phosphonated ionomer and about 99 weight % to about 1 weight % of at least co-component polymer. The co-component polymer may be a conventional ionomer, a thermoplastic, a thermoplastic elastomer, a thermoset polymer, or mixtures thereof.Type: GrantFiled: December 13, 1999Date of Patent: April 30, 2002Assignee: Acushnet CompanyInventor: Murali Rajagopalan
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Patent number: 6350839Abstract: Hydrolysis-stable and polymerizable acrylophosphonic acid monoesters with the general formula (I) which are particularly suitable as a component of dental materials are disclosed.Type: GrantFiled: April 16, 2001Date of Patent: February 26, 2002Assignee: Ivoclar Vivadent AGInventors: Norbert Moszner, Frank Zeuner, Volker Rheinberger
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Publication number: 20020016430Abstract: The present invention, for example, provides a production process for a water-soluble polymer which is suitable for a component of a scale inhibitor which controls the formation of scale even in joint use with anticorrosives such as zinc-based or condensed phosphoric acid-based ones, and has so excellent gelation resistance as to be difficult to precipitate, and contains no or little phosphorus.Type: ApplicationFiled: May 7, 2001Publication date: February 7, 2002Inventors: Shigeru Yamaguchi, Takashi Fujisawa
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Publication number: 20020016384Abstract: Hydrolysis-stable and polymerizable acrylophosphonic acid with the general formula (I) 1Type: ApplicationFiled: April 13, 2001Publication date: February 7, 2002Applicant: Ivoclar Vivadent AG.Inventors: Norbert Moszner, Andre Rumphorst, Volker Rheinberger, Frank Zeuner
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Publication number: 20010044513Abstract: Hydrolysis-stable and polymerizable acrylophosphonic acid monoesters with the general formula (I) 1Type: ApplicationFiled: April 16, 2001Publication date: November 22, 2001Applicant: Ivoclar Vivadent AGInventors: Norbert Moszner, Frank Zeuner, Volker Rheinberger
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Patent number: 6297335Abstract: The hydrogels are based on polymerized monomers or on graft polymers and each have a Pressure Absorbency Index <100 and a vertical absorption of not less than 12 g/g under a pressure of 1922.8 Pa.Type: GrantFiled: February 5, 1999Date of Patent: October 2, 2001Assignee: BASF AktiengesellschaftInventors: Rüdiger Funk, Norbert Herfert, Mariola Wanior, Patricia D. Brown, Fritz Engelhardt, Guy T. Woodrum
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Patent number: 6291618Abstract: The present invention relates to cyclic phosphazene azides and their use in a process for producing a rheology modified polymer which comprises contacting a polymer with a cyclic phosphazene azide at a temperature which is at least the decomposition temperature of the cyclic phosphazene azide. When the cyclic phosphazene azide reacts with the polymer, at least two separate polymer chains are advantageously joined and the molecular weight of the polymer chain is increased.Type: GrantFiled: October 27, 2000Date of Patent: September 18, 2001Assignee: The Dow Chemical CompanyInventors: H. Craig Silvis, Michael B. McIntosh
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Patent number: 6264839Abstract: Phosphonomethylated poly-vinylamines which contain as characteristic structural elements units of the formula where R1 is hydrogen, C1-C6-alkyl or and X is hydrogen, an alkali metal, ammonium or one equivalent of an alkaline earth metal, are obtainable by phosphonomethylation of polymers which contain N-vinyl-amide or vinylamine groups and are useful as detergent additives and water treatment agents.Type: GrantFiled: July 12, 1993Date of Patent: July 24, 2001Assignee: BASF AktiengesellschaftInventors: Juergen Mohr, Knut Oppenlaender, Walter Denzinger, Heinrich Hartmann, Richard Baur, Charalampos Gousetis, Alexander Kud
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Patent number: 6261538Abstract: Disclosed is a series of the water-insoluble polymeric quaternary phosphonium salt-type bactericides, which consists of as active bactericidal components an amino quaternary phosphonium salt, a quaternary ammonium group-containing quaternary phosphonium salt, an amino quaternary phosphonium salt-quaternay ammonium salt, or a quaternary ammonium salt-containing quaternary phosphonium salt and quaternary ammonium salt carried on a resin carrier which can be chloromethylated. Said bactericide series has rapid and highly effective bactericidal activity, and can be used repeatedly, and used widely for sterilizing and disinfecting various fluid media such as different industrial and domestic water and the like.Type: GrantFiled: October 28, 1998Date of Patent: July 17, 2001Assignees: China Petrochemical Corporation, Research Institute of Petroleum Processing, SINOPECInventors: Yongjun Chen, Xieqing Wang, Bengao Li
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Patent number: 6214957Abstract: Solubilizers, emulsifiers and dispersing agents having the effects of moisturizing the skin when used as washing agents and having the character of elevating the concentration of a material to be solubilized, emulsified or dispersed in solvents including water as compared with the case where the material is employed alone, or elevating the apparent concentration of a material to be emulsified or dispersed in solvents by increasing homogeneity of the emulsion or dispersion which contain as the active ingredient polymers obtained by polymerizing monomer compositions containing at least one hydrophilic monomer (a) having a group represented by general formula (1) in the side chain, wherein R1, R2 and R3 represent each H or C1-4 alkyl.Type: GrantFiled: January 29, 1999Date of Patent: April 10, 2001Assignees: NOF Corporation, Japan Science Technology CorporationInventors: Daijiro Shiino, Kazunori Waki, Nobuo Nakabayashi, Kazuhiko Ishihara
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Patent number: 6204324Abstract: A method for producing an aqueous solution of a polymer having a phosphorylcholine group in which a polymerizable composition containing a polymerizable monomer having the phosphorylcholine group represented by the formula (1) is polymerized in the presence of a non-metal polymerization initiator soluble in a water-containing medium, to obtain a crude polymer aqueous solution, and the crude polymer aqueous solution is purified with a separation membrane, and an aqueous solution of the polymer having the phosphorylcholine group obtained by the method and having not more than 2000 ppm of impurities.Type: GrantFiled: December 2, 1996Date of Patent: March 20, 2001Assignees: NOF Corporation, Japan Science and Technology CorporationInventors: Kenshiro Shuto, Kazuo Matsuyama, Nobuo Nakabayashi, Kazuhiko Ishihara
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Patent number: 6197905Abstract: A process for the production of polymers by free radical polymerization, characterized in that there is added to the polymerization system one or more compounds of general formula (A), where R1 is a group capable of activating the vinylic carbon towards free radical addition; Y is OR2, where R2 is an optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, or optionally substituted saturated or unsaturated carbocyclic or heterocyclic ring; X is an element other than carbon selected from the Groups, IV, V, VI or VII of the Periodic Table or a group consisting of an element selected from the Groups IV, V, or VI to which is attached one or more oxygen atoms; and n is a number from 0 to 3, such that the valency of the group X is satisfied and, when n is greater than 1, the groups represented by R2 are identical or different.Type: GrantFiled: March 21, 1997Date of Patent: March 6, 2001Assignee: Commonwealth Scientific & Industrial Resarch OrganizationInventors: Ezio Rizzardo, Gordon Francis Meijs, San Hoa Thang
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Patent number: 6187838Abstract: The use of polymerizable monomeric conditioning agents for treating the enamel and dentin of a tooth prior to application of a primer and subsequent application of a bonding resin, or a combination of a primer/bonding resin has been found to provide good shear bond strength on both moist and dry dentin. In addition, the contact angles provided by water on dentin conditioned with the polymerizable conditioners as compared to the non-polymerizable phosphoric acid are much lower, reflecting improved spreading over the surface of the tooth.Type: GrantFiled: June 7, 1999Date of Patent: February 13, 2001Assignee: American Dental Association Health FoundationInventor: Sabine H. Dickens
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Patent number: 6172131Abstract: Hydrolysis-stable and polymerizable acrylphosphonic acids are described which are particularly suitable as a component of dental adhesives owing to their adhesion-promoting properties.Type: GrantFiled: October 9, 1998Date of Patent: January 9, 2001Assignee: Ivoclar AGInventors: Norbert Moszner, Frank Zeuner, Volker Rheinberger
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Patent number: 6114426Abstract: A pressure-sensitive, flame-retardant adhesive is disclosed comprising a composition fabricated with the polymerization of acrylic esters, dibromostyrene, and vinyl phosphonic acid, with or without acrylic acid, mixed with dispersions of antimony trioxide. The adhesive composition preferably is an emulsion polymer fabricated with dibromostyrene, 2-ethylhexyl acrylate, n-butyl acrylate, and vinyl phosphonic acid, mixed with Sb.sub.2 O.sub.3 in an approximate ratio of 100 parts polymer per about 8-12 parts Sb.sub.2 O.sub.3. Preferred polymers are those containing at least about 11.6% to 15.6% bromine and from 0.25 to 2.5% phosphorous. The adhesive is particularly advantageous in fabricating optical circuit devices.Type: GrantFiled: November 20, 1997Date of Patent: September 5, 2000Assignee: Lucent Technologies, Inc.Inventors: John Joseph Burack, Peter A. Yurcick
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Patent number: 6107424Abstract: A method for preparing a polymer, comprising the step of polymerizing a monomer of the formula ##STR1## in the presence of a specific initiator containing at least one amino subotituent and one aromatic substituent on a phosphorus atom.Type: GrantFiled: August 18, 1998Date of Patent: August 22, 2000Assignee: BASF AktiengesellschaftInventors: Stephan Jungling, Thieo E. Hogen-Esch, Dimo Dimov, Axel H. E. Muller, Herbert Konigsmann
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Patent number: 6087462Abstract: Polymers of one or more radical polymerisable monomers which polymer has pendant groups bearing a centre of permanent positive charge and other pendant groups capable of stably binding the polymer to a surface are useful in the treatment of surfaces to render them biocompatible. The polymers may contain pendant groups which bind the polymer to a surface by physisorption, covalent bonding or ionic interactions. Additionally reactive groups in the polymer may serve as points for attachment of ligands to the polymer when coated on a surface.Type: GrantFiled: May 12, 1998Date of Patent: July 11, 2000Assignee: Biocompatibles LimitedInventors: Roderick W J Bowers, Stephen A Jones, Peter W Stratford, Stephen A Charles
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Patent number: 6071434Abstract: The reaction of compounds of the formula:X.sub.2 O.sub.3 P CHY CZ.sub.2where Y and each Z are each H, PO.sub.3 X.sub.2, SO.sub.3 X or CO.sub.2 X (e.g. vinyl phosphonic acid or vinylidene diphosphonic acid) with hypophosphorous acid in the presence of free radicals provides novel compounds X.sub.2 O.sub.3 PCHYCZ.sub.2 PO.sub.2 XH which react with monomers such as vinyl sulphonate, vinyl phosphonate, vinylidene diphosphonate and acrylic acid to form telomers useful for scale inhibition, especially barium scale in oil wells. The polymers show better absorption to rock than PVSA and better thermal stability than random copolymers containing equivalent phosphorus.Type: GrantFiled: February 18, 1998Date of Patent: June 6, 2000Assignee: Albright & Wilson UK LimitedInventors: Keith Philip Davis, Alan Craig Smith, David Robert Edward Walker, Gary Woodward
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Patent number: 6057429Abstract: The present invention provides crosslinking, conjugating and reducing agents which are functional with at least one phosphorothioate monoester group (--SPO.sub.3.sup.-2). Crosslinking and conjugation methods as well as solid phase reagents and conjugates which are useful in immunoassays are also provided.Crosslinking and conjugating agents of the invention generally comprise a compound corresponding to the formula (I), shown below, wherein n at least 1 and Q is a straight or branched monomer, polymer or oligomer having an average molecular weight between about 200 and about 1,000,000. Additionally, when n is 1, Q comprises at least 1 additional reactive functionality.Q--(S--PO.sub.3.sup.-2).sub.n (I)The reducing agents that are provided conform to a compound of the formula (Y), shown below, wherein (A) and (Z) can be independently selected from C.sub.1 -C.sub.5 alkyl and CONH(CH.sub.2).sub.p wherein p is an integer between 1 and 5.Type: GrantFiled: May 29, 1996Date of Patent: May 2, 2000Assignee: Abbott LaboratoriesInventors: Christopher Bieniarz, Douglas F. Young, Michael J. Cornwell, Zbigniew Skrzypczynski
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Patent number: 6001897Abstract: The use of polymerizable monomeric conditioning agents for treating the enamel and dentin of a tooth prior to application of a primer and subsequent application of a bonding resin, or a combination of a primer/bonding resin has been found to provide good shear bond strength on both moist and dry dentin. In addition, the contact angles provided by water on dentin conditioned with the polymerizable conditioners as compared to the non-polymerizable phosphoric acid are much lower, reflecting improved spreading over the surface of the tooth.Type: GrantFiled: January 13, 1997Date of Patent: December 14, 1999Assignee: American Dental Association Health FoundationInventor: Sabine H. Dickens
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Patent number: 5990255Abstract: The present invention is a free radical bulk polymerization process for the preparation of high molecular weight polymers from vinyl aromatic monomers, characterized in that the polymerization is conducted in the presence of a vinyl acid containing either a sulfur or phosphorus atom within the acid functional group.Type: GrantFiled: February 23, 1996Date of Patent: November 23, 1999Assignee: The Dow Chemical CompanyInventors: Duane B. Priddy, Virginia A. Dais
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Patent number: 5980776Abstract: Phosphonic acid polymers are prepared from di- or polyphosphonic acids having one or more unsaturated C.dbd.C bonds (e.g. vinylidene-1,1-diphosphonic acid), either as homopolymers or as higher polymers with at least one further compound having unsaturated C.dbd.C bonds (e.g. acrylic acid). The polymers can be used as, or in connection with, flame-retardants, corrosion inhibitors, coatings, cements and ion exchange resins.Type: GrantFiled: September 24, 1997Date of Patent: November 9, 1999Assignee: Albright & Wilson UK LimitedInventors: Mohsen Zakikhani, David Robert Edward Walker, Peter David Hasling, Alan Craig Smith, Keith Philip Davis
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Patent number: 5971754Abstract: A method of indirect bonding used in orthodontic treatment includes the steps of placing a first component of an adhesive on base structure of an orthodontic appliance and a second component of the adhesive on portions of a patient's tooth. The appliance is connected to a transfer tray, and the transfer tray is placed over the tooth such that the first component and the second component contact each other and react to provide a bond for securing the appliance to the tooth. The bond has sufficient strength within two minutes and preferably within 1.5 minutes of the time that the first component contacts the second component to enable removal of the tray from the tooth without significantly changing the position of the appliance on the tooth.Type: GrantFiled: July 30, 1998Date of Patent: October 26, 1999Inventors: Anoop Sondhi, Darrell S. James, Jerold S. Horn
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Patent number: 5965660Abstract: A desensitizing solution for lithography is disclosed which contains at least one member selected from acyclic amine and ammonium compounds each containing specific structures. The desensitizing solution does not cause environmental pollution, is stable to long-term storage, continuous use, and fluctuations in environmental conditions, is effective in reducing the time required for etching treatment, and has excellent desensitization performance.Type: GrantFiled: March 27, 1997Date of Patent: October 12, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Seishi Kasai, Ryosuke Itakura, Eiichi Kato
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Patent number: 5919836Abstract: The invention relates to the use of a mixture which comprises:a) 1-5 weight % (wt. %) of phosphoric acid;b) 10-90 wt. % of phosphoric acid mono- or di- methacrylates;c) 1-15 wt. % of phosphoric acid trimethacrylates; andd) 3-50 wt. % of diphosphates having between two and four methacrylate ester groups;for the preparation of a composition for preparing a tooth surface for joining with a dental composite material. Using the composition according to the invention, a tooth cavity can be prepared in one step for laying a composite filling. A very high adhesive strength is achieved between the tooth matter and the composite material.Type: GrantFiled: November 12, 1997Date of Patent: July 6, 1999Assignee: Ernst Muhlbauer KGInventor: Klaus-Jurgen Reinhardt
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Patent number: 5905127Abstract: Mesogens are provided based on substituted unsaturated carboxylic acids such as acrylic and methacrylic acid. Substitution of a variety of hydrophobic tails onto the carboxylic acid or acid derivative via the vinyl carbon proximal to the carbonyl of the carboxylic acid results in mesogens that are capable of forming thermotropic and single-phase lyotropic mesophases over a broad range of compositions. The mesophases can be polymerized to lock in the ordered phases.Type: GrantFiled: April 8, 1997Date of Patent: May 18, 1999Assignee: The University of Southern MississippiInventors: Robert Y Lochhead, Lon J Mathias
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Patent number: 5874511Abstract: A process for the production of polymers by free radical polymerization, characterized in that there is added to the polymerization system one or more compounds of the general formula (A). ##STR1## where R.sup.1 is hydrogen or a group capable of activating the vinylic carbon towards free radical addition;Y is OR.sup.2 or CH.sub.2 X(R.sup.2).sub.nwhere R.sup.2 is an optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, or optionally substituted saturated, unsaturated or aromatic carbocyclic or heterocyclic ring;X is an element other than carbon selected from Groups IV, V, VI or VII of the Periodic Table or a group consisting of an element selected from Groups IV, V, or VI to which is attached one or more oxygen atoms; andn is a number from 0 to 3, such that the valency of the group X is satisfied and, when n is greater than 1, the groups represented by R.sup.2 may be identical or different.Type: GrantFiled: June 24, 1996Date of Patent: February 23, 1999Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific and Industrial Research OrganisationInventors: Ezio Rizzardo, Gordon Francis Meijs, San Hoa Thang
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Patent number: 5783650Abstract: Polymers of one or more radical polymerisable monomers which polymer has pendant groups bearing a centre of permanent positive charge and other pendant groups capable of stably binding the polymer to a surface are useful in the treatment of surfaces to render them biocompatible. The polymers may contain pendant groups which bind the polymer to a surface by physisorption, covalent bonding or ionic interactions. Additionally reactive groups in the polymer may serve as points for attachment of ligands to the polymer when coated on a surface.Type: GrantFiled: June 7, 1995Date of Patent: July 21, 1998Assignee: Biocompatibles LimitedInventors: Roderick W. J. Bowers, Stephen A. Jones, Peter W. Stratford, Stephen A. Charles
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Patent number: 5756625Abstract: Stabilized microsphere adhesive composition comprising: a plurality of polymeric, elastomeric microspheres wherein the microspheres are the reaction product of reactants comprising polymerizable starting materials comprising at least one C.sub.4 -C.sub.14 alkyl (meth)acrylate monomer and optionally at least one comonomer, at least one vinyl-unsaturated additive having both an ionic moiety and a hydrophobic moiety and containing at least 5 but not more than 40 carbon atoms in an amount about 0.1 to 3 parts by weight of the microspheres; optionally, a polymeric stabilizer in an amount of between about 0.Type: GrantFiled: October 11, 1996Date of Patent: May 26, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Michael D. Crandall, Michael R. Kesti
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Patent number: 5739177Abstract: A dental composition containing an acid such as maleic acid, phosphoric acid or citric acid; an organosulfonate and/or an organosulfinate such as an acid group-containing (meth)acrylate monomer having in the molecules thereof a carboxyl group or a phosphoric acid group, a sodium benzenesulfonate or a sodium p-toluenesulfinate; a water-soluble organic solvent such as ethanol or propanol; and the water: but without substantially containing any polymerizable monomer except the above acid group-containing (meth)acrylate monomer, or further containing a hydroxy- or a dihydroxyalkyl (meth)acrylate monomer. For adhesion of a dental filling material to teeth, the composition of the invention is used as a pre-treatment agent on teeth prior to applying an adhesive. This makes it possible to treat enamel and dentin simultaneously and to accomplish strong adhesive strength to both of them.Type: GrantFiled: June 6, 1996Date of Patent: April 14, 1998Assignee: Tokuyama CorporationInventors: Hideki Ohno, Mikio Kimura, Satoru Fuchigami, Makoto Oguri
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Patent number: 5717047Abstract: The present invention relates to materials which comprise a surface having pendant groups of formula (I), in which the groups --B-- are the same or different, preferably the same, and each is --CH.sub.2 -- or --C(.dbd.O)--, preferably --CH.sub.2 --, R.sup.1 is hydrogen alkyl of 1 to 12, preferably 1 to 4 carbon atoms, or a group capable of bonding to, or bonded to, a ligand or R.sup.1 is a polymerisable, preferably ethylenically unsaturated, group and Z is a zwitterionic group. Usually both groups B are the same and are joined to identical groups so that the compound of formula (I) is achiral. New compounds are achiral glyceryl phosphatidyl choline analogues. Surfaces having the groups (I) at their surface have improved biocompatibility, and show reduced fibrinogen absorption, reduced platelet activation, reduced microorganism adhesion and are useful in the production of implants or prostheses, for extra-corporeal circuitry for body fluids, for treating membranes of various type, for contact lenses.Type: GrantFiled: June 7, 1995Date of Patent: February 10, 1998Assignee: Biocompatibles LimitedInventors: Jeremy Colin Russell, Stephen Alexander Charles, Richard Neil Templar Freeman, Judith Elizabeth Browne
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Patent number: 5696194Abstract: A process for preparing a water-soluble polymer dispersion is herein provided which is characterized by polymerizing from about 10 to 50 mole percent of a monomer having a formula (II); from about 1 to 50 mole percent of N-alkylacrylamide, N,N-dialkylacrylamide or mixtures thereof; having a formula (III) from about 1 to 70 mole percent acrylamide; and optionally up to about 4 mole percent of a monomer having a formula (I) having a benzyl functionality. The polymerization is carried out in the presence of an aqueous solution of a polyvalent anionic salt which contains (1) a water soluble cationic polymer which is insoluble in the aqueous salt solution and (2) a water soluble cationic polymer which is soluble in the aqueous salt solution.Type: GrantFiled: February 3, 1997Date of Patent: December 9, 1997Assignee: BetzDearborn Inc.Inventors: Edward J. Connors, Michelle L. Cotter, Fu Chen
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Patent number: 5684104Abstract: Method for avoiding network defects due to unwanted secondary reactions during the polymerization in water-swellable hydrophilic polymers which contain polymers prepared by free radical (co)polymerization of one or more hydrophilic monomers of the formula I ##STR1## wherein R.sup.1 is hydrogen, methyl or ethyl,R.sup.2 is the group --COOR.sup.4, the sulphonyl group, the phosphonyl group, the phosphonyl group-esterified by (C.sub.1 -C.sub.4)-alkanol or a group of the formula ##STR2## R.sup.3 is hydrogen, methyl, ethyl or the carboxyl group, R.sup.4 is hydrogen, amino or hydroxy-(C.sub.1 -C.sub.4)-alkyl andR.sup.5 is the sulphonyl group, the phosphonyl group or the carboxyl group, or grafting (co)polymerization of one or more hydrophilic monomers of the formula I onto a grafting base, using a free radical initiator which forms three or more free radical sites per molecule.Type: GrantFiled: July 18, 1996Date of Patent: November 4, 1997Assignee: CassellaInventors: Rudiger Funk, Fritz Engelhardt, Ulrich Riegel, Michael Wessling
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Patent number: 5670550Abstract: Anion exchange resins including at least two positively charged sites and a ell-defined spacing between the positive sites are provided together with a process of removing anions or anionic metal complexes from aqueous solutions by use of such resins. The resins can be substituted poly(vinylpyridine) and substituted polystyrene.Type: GrantFiled: June 7, 1995Date of Patent: September 23, 1997Assignee: The Regents of the University of California Office of Technology TransferInventors: Gordon D. Jarvinen, S. Fredric Marsh, Richard A. Bartsch
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Patent number: 5648442Abstract: Polymers of one or more radical polymerizable monomers which polymer has pendant groups bearing a center of permanent positive charge and other pendant groups capable of stably binding the polymer to a surface are useful in the treatment of surfaces to render them biocompatible. The polymers may contain pendant groups which bind the polymer to a surface by physisorption, covalent bonding or ionic interactions. Additionally reactive groups in the polymer may serve as points for attachment of ligands to the polymer when coated on a surface.Type: GrantFiled: March 7, 1994Date of Patent: July 15, 1997Assignee: Biocompatibles LimitedInventors: Roderick W. J. Bowers, Stephen A. Jones, Peter W. Stratford
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Patent number: 5618851Abstract: An ion exchange resin is disclosed that is comprised of an insoluble copolymer onto which are grafted pendent groups that provide 1.0 to about 10 mmol/g dry weight phosphorous. The pendent groups have the formula ##STR1## wherein R is hydrogen, a cation or mixtures thereof; andR.sup.1 is hydrogen or an C.sub.1 -C.sub.2 alkyl group. The resin also contains zero to about 5 mmol/g dry weight of pendent aromatic sulfonate groups. Processes for making and using an ion exchange resin are also disclosed.Type: GrantFiled: February 6, 1995Date of Patent: April 8, 1997Assignees: Arch Development Corp., The University of Tennessee Research Corp.Inventors: Andrzej W. Trochimcznk, Ralph C. Gatrone, Spiro Alexandratos, E. Philip Horwitz
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Patent number: 5614602Abstract: A process for preparing a water-soluble polymer dispersion is herein provided which is characterized by polymerizing from about 10 to 50 mole percent of a monomer having a formula (II); from about 1 to 50 mole percent of N-alkylacrylamide, N,N-dialkylacrylamide or mixtures thereof; having a formula (III) from about 1 to 70 mole percent acrylamide; and optionally up to about 4 mole percent of a monomer having a formula (I) having a benzyl functionality. The polymerization is carried out in the presence of an aqueous solution of a polyvalent anionic salt which contains (1) a water soluble cationic polymer which is insoluble in the aqueous salt solution and (2) a water soluble cationic polymer which is soluble in the aqueous salt solution.Type: GrantFiled: July 9, 1996Date of Patent: March 25, 1997Assignee: BetzDearborn Inc.Inventors: Edward J. Connors, Michelle L. Cotter, Fu Chen
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Patent number: 5608023Abstract: A polymerization process for the preparation of thermoplastic resin or resins comprising heating a mixture comprised of a free radical initiator, a stable free radical agent, at least one polymerizable monomer compound, and a sulfonic acid salt polymerization rate enhancing compound, to form a thermoplastic resin or resins with a high monomer to polymer conversion and a narrow polydispersity.Type: GrantFiled: March 30, 1995Date of Patent: March 4, 1997Assignee: Xerox CorporationInventors: Peter G. Odell, Richard P. N. Veregin, Gordon K. Hamer, Michael K. Georges
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Patent number: 5604291Abstract: Phosphonic telomer intermediates for preparing the telomers of U.S. Pat. No. 5,376,731 may be produced by an aqueous process comprising (a) reacting hypophosphorous acid with a carbonyl compound which is preferably an aldehyde, a ketone or an imine, and (b) reacting the product of (a) with an olefinic reactant or reactants in the presence of a suitable initiator especially a free radical initiator. The telomer intermediates are themselves useful as scale inhibitors in aqueous systems.Type: GrantFiled: September 16, 1994Date of Patent: February 18, 1997Assignee: FMC Corporation (UK) LimitedInventors: Elizabeth A. Kerr, Jan Rideout
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Patent number: 5602185Abstract: Sulfonyl fluoride substituted .alpha.,.beta.,.beta.-trifluorostyrene monomers are disclosed. The monomers are incorporated into polymeric compositions which are conveniently hydrolyzed to produce polymeric compositions which include ion-exchange moieties. The resulting compositions which include ion-exchange moieties are particularly suitable for use as solid polymer electrolytes in electrochemical applications, such as, for example, electrochemical fuel cells.Type: GrantFiled: June 6, 1995Date of Patent: February 11, 1997Assignee: Ballard Power Systems Inc.Inventors: Charles Stone, Alfred E. Steck, Robert D. Lousenberg
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Patent number: 5601640Abstract: A light-curable dental cement composition contains (a) the reaction product of vinyl phosphonyl chloride and pentane 1,5 diol, (b) a photopolymerisation initiator, (c) ion-leachable aluminosilicate glass powder, (d) poly(vinyl phosphonic acid), (e) bisGMA as a photopolymerisable dimethacrylate resin, and water, inert filler and silanising agent. Upon mixing, glass is added last, the composition is put in place and, when ready, it is light-irradiated for 30 or 40 seconds to polymerise (e). The composition is immediately firm and the phosphonate groups adhere to tooth material while further slow curing by acid-base reaction continues.Type: GrantFiled: March 23, 1995Date of Patent: February 11, 1997Assignee: British Technology Group LimitedInventors: Helen M. Anstice, John W. Nicholson
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Patent number: 5594084Abstract: A water soluble isopropenylphosphonic acid copolymer composition and method of use thereof are disclosed. The copolymer comprises repeat units (a) of the formula: ##STR1## wherein X=OH or OM, wherein M is a cation, and repeat units (b) of the formula: ##STR2## wherein R.sub.1 and R.sub.2 are independently hydrogen, C.sub.1-10 linear or branched alkyl, phenyl or alkyl substituted phenyl. The copolymers are effective in inhibiting the precipitation of scale forming salts and also act to inhibit corrosion in boiler water systems.Type: GrantFiled: December 8, 1995Date of Patent: January 14, 1997Assignee: BetzDearborn Inc.Inventors: Scott M. Boyette, Alan E. Goliaszewski
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Patent number: 5582775Abstract: Polymeric phosphonium salts useful for enhancing the chemiluminescence produced by 1,2-dioxetanes are described. The polymers are preferably water soluble and used in immunoassays and nucleic acid assays with enzyme triggerable 1,2-dioxetanes.Type: GrantFiled: August 14, 1995Date of Patent: December 10, 1996Assignee: Lumigen, Inc.Inventor: Hashem Akhavan-Tafti
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Patent number: 5567778Abstract: Disclosed herein is an optical filter comprising: a resin material obtained by copolymerizing a monomer represented by the following formula (I) and a monomer copolymerizable therewith; and a metallic compound mainly composed of a copper compound;PO(OH).sub.n R.sub.3-n (I)wherein R represents ##STR1## (wherein X represents a hydrogen atom or a methyl group, and m is an integer of 0 to 5), and n is 1 or 2.Type: GrantFiled: April 5, 1995Date of Patent: October 22, 1996Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Teruo Sakagami, Takeo Ogihara, Yasufumi Fujii, Hiroki Katono
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Patent number: 5539003Abstract: An ion exchange resin for extracting metal ions from a liquid waste stream. An ion exchange resin is prepared by copolymerizing a vinylidene diphosphonic acid with styrene, acrylonitrile and divinylbenzene.Type: GrantFiled: April 25, 1995Date of Patent: July 23, 1996Assignees: University of Tennessee Research Corporation, Arch Development CorporationInventors: E. Philip Horwitz, Spiro D. Alexandratos, Ralph C. Gatrone, Ronato Chiarizia
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Patent number: 5520910Abstract: An antimicrobial polymer obtained by homo- or copolymerizing a phosphonium salt type vinyl monomer, such as 2-(methacrylic acid) ethyltri-n-octylphosphonium chloride, and a contact lens and an article for its care mainly comprising an antimicrobial resin obtained by copolymerizing a polymerizable monomer and a phosphonium salt type vinyl monomer are disclosed. The antimicrobial polymer has a broad antimicrobial spectrum and produces a sufficient antimicrobial effect after a short contact time. The contact lens and article for its care are hardly effected by contamination with microorganisms while retaining excellent optical performance and processability.Type: GrantFiled: March 13, 1995Date of Patent: May 28, 1996Assignees: Nippon Chemical Industrial, Seiko Epson CorporationInventors: Kazukichi Hashimoto, Yoshiko Inaba, Seiji Shimura, Takao Mogami, Tadao Kojima, Yoichi Ushiyama
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Patent number: 5519102Abstract: A method of preparing poly(isopropenylphosphonic acid) is disclosed, which provides a high yield with low initiator charge. The method comprises preparing poly(isopropenylphosphonic acid) by polymerizing a mixture of isopropenylphosphonic acid and isopropenylphosphonic acid anhydride, preferably in an aqueous solution.Type: GrantFiled: May 9, 1995Date of Patent: May 21, 1996Assignee: Betz Laboratories, Inc.Inventors: Michael A. Cady, William S. Carey, Andrew Solov