Nitrogen Attached Indirectly To The -s(=o)(=o)-s- Group By Acyclic Nonionic Bonding Patents (Class 560/309)
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Patent number: 8450390Abstract: The present invention provides both crosslinked polymer compositions capable of forming hydrogels upon exposure to an aqueous environment and thiosulfonate hydrogel-forming components. The thiosulfonate hydrogel-forming components of the invention are preferably multi-arm thiosulfonate polymer derivatives that form a crosslinked polymer composition when exposed to a base without requiring the presence of a second cross-linking reagent, redox catalyst, or radiation. Methods for forming hydrogel compositions, as well as methods for using the hydrogels, are also provided.Type: GrantFiled: July 20, 2012Date of Patent: May 28, 2013Assignee: Nektar TherapeuticsInventors: Zhihao Fang, Michael D. Bentley
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Patent number: 8247598Abstract: The present invention provides both crosslinked polymer compositions capable of forming hydrogels upon exposure to an aqueous environment and thiosulfonate hydrogel-forming components. The thiosulfonate hydrogel-forming components of the invention are preferably multi-arm thiosulfonate polymer derivatives that form a crosslinked polymer composition when exposed to a base without requiring the presence of a second cross-linking reagent, redox catalyst, or radiation. Methods for forming hydrogel compositions, as well as methods for using the hydrogels, are also provided.Type: GrantFiled: December 14, 2011Date of Patent: August 21, 2012Assignee: Nektar TherapeuticsInventors: Zhihao Fang, Michael D. Bentley
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Publication number: 20120088928Abstract: Use of S-(3-aminopropyl)thiosulfuric acid and/or a metal salt thereof for improving the viscoelastic properties of a vulcanized rubber.Type: ApplicationFiled: June 1, 2010Publication date: April 12, 2012Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Orhan Ozturk, Yasuo Uekita, Kenichi Takeuchi
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Publication number: 20120088927Abstract: The present invention provides both crosslinked polymer compositions capable of forming hydrogels upon exposure to an aqueous environment and thiosulfonate hydrogel-forming components. The thiosulfonate hydrogel-forming components of the invention are preferably multi-arm thiosulfonate polymer derivatives that form a crosslinked polymer composition when exposed to a base without requiring the presence of a second cross-linking reagent, redox catalyst, or radiation. Methods for forming hydrogel compositions, as well as methods for using the hydrogels, are also provided.Type: ApplicationFiled: December 14, 2011Publication date: April 12, 2012Applicant: Nektar TherapeuticsInventors: Zhihao Fang, Michael D. Bentley
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Patent number: 7674930Abstract: To prepare a polyester polyol in which a lactone is ring-opening addition polymerized with the compound represented by formula (I). (wherein each of A1 and A2 represents an alkylene group having not less than 2 carbon atoms, A3 represents an alkylene group, X represents a cationic component, and each of n and m represents an integer of not less than 1.) The polyester polyol has a high hydrophilic group and high solubility in a solvent (particularly, a low-boiling organic solvent used in the production of a polyurethane) and can design an aqueous polyurethane desirably and produce the aqueous polyurethane.Type: GrantFiled: August 3, 2006Date of Patent: March 9, 2010Assignee: Daicel Chemical Industries, Ltd.Inventors: Kazunori Nakao, Nobuyuki Watanabe
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Patent number: 5807847Abstract: Aliphatic Nitrate esters having a sulfur or phosphorus atom .beta. or .gamma. to a nitrate group having efficacy as vasodilators are described. Preferred nitrate esters may be synthesized by nitration of a 3-bromo-1,2-propanediol, and subsequent reaction to yield the desired mono, di or tetra nitrate ester.Type: GrantFiled: June 4, 1996Date of Patent: September 15, 1998Assignee: Queen's University at KingstonInventors: Gregory R. J. Thatcher, Brian M. Bennett
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Patent number: 5686642Abstract: Reactive dyestuffs which, in the form of the free acid, correspond to the following formula ##STR1## wherein D is the radical of an organic dyestuff of the mono-azo, polyazo or metal complex azo series and the other substituents have the meaning given in the description, show improved application properties.Type: GrantFiled: July 16, 1996Date of Patent: November 11, 1997Assignee: Bayer AktiengesellschaftInventors: Konrad Bootz, Manfred Hoppe, Eckhard Bock, Wolfram Reddig, Thomas Eizenhofer, Wolfgang Harms, Karl-Josef Herd
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Patent number: 5387674Abstract: There are described formazan dyes of the formula ##STR1## where n is 1 or 2,Kat.sup..sym. is the equivalent of a cation,Me is copper or nickel,X is a radical of the formula CO--O or SO.sub.2 --O,Y is vinyl or a radical of the formula C.sub.2 H.sub.4 --Q, where Q is a group which is detachable under alkaline reaction conditions,the ring A may be substituted and benzofused, the ring B is substituted and may be benzofused, and the ring C may be substituted, the use thereof for dyeing or printing hydroxyl- or nitrogen-containing organic substrates, and novel hydrazones.Type: GrantFiled: September 8, 1993Date of Patent: February 7, 1995Assignee: BASF AktiengesellschaftInventors: Claus Marschner, Manfred Patsch
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Patent number: 5290810Abstract: A compound of the formula ##STR1## in which R.sup.1 and R.sup.2 taken together represent a polymethylene chain having 3 or 4 carbon atoms, or a polymethylene chain having 3 or 4 carbon atoms substituted by at least one lower alkyl radical having 1 to 4 carbon atoms, R.sup.3 is hydrogen, hydrocarbyl or substituted hydrocarbyl and X represents cyano, a group --SO.sub.3 M or a group --S--R.sup.4 where M is hydrogen or an alkali metal such as sodium and R.sup.4 is hydrocarbyl or substituted hydrocarbyl. Typically R.sup.1 and R.sup.2 complete a cyclopentene ring, R.sup.3 is alkyl such as methyl and X is a group --SO.sub.3 Na. The compounds have microbiological activity.Type: GrantFiled: September 24, 1991Date of Patent: March 1, 1994Assignee: Imperial Chemical Industries PLCInventor: Peter W. Austin
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Patent number: 4587296Abstract: Additives for rubber compositions, giving vulcanisates having improved retention of optimum physical properties, are compounds containing two or more groups of the formula --S--SO.sub.2 R linked by an organic bridging group, or polymers containing two or more groups of the formula --S--SO.sub.2 R attached to an organic polymer chain, where R represents (a) a radical OM where M is a monovalent metal, the equivalent of a multivalent metal, a monovalent in derived by the addition of a proton to a nitrogenous base, or the equivalent of a multivalent ion derived by the addition of two or more protons to a nitrogenous base, or (b) an organic radical selected from aliphatic, cycloaliphatic, aromatic and heterocyclic radicals, and radicals which are combinations of any two or more such radicals.Type: GrantFiled: April 11, 1985Date of Patent: May 6, 1986Assignee: Monsanto Europe, S.A.Inventor: Philippe G. Moniotte