Polymer From Ethylenic Monomers Only, Having Cationic Group Patents (Class 525/916)
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Patent number: 8318207Abstract: In accordance with certain embodiments of the present disclosure, a method for intracellular delivery of small molecules is provided. The method includes encapsulation of small molecules in a thermally responsive nanocapsule by decreasing the temperature of the nanocapsule to increase the permeability of the nanocapsule and allowing the small molecules to be suck into or diffuse into the nanocapsule. The nanocapsule is delivered into a cell by increasing the temperature of the nanocapsule. The small molecules are released from the nanocapsule into the cell in a controllable manner by cooling and heating treatments.Type: GrantFiled: February 12, 2010Date of Patent: November 27, 2012Assignee: University of South CarolinaInventor: Xiaoming He
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Patent number: 7084205Abstract: Compositions comprising of blends of polymeric materials, including a cationic polymer having an intrinsic viscosity of from 8 to 17 dl/g and a cationic content of from 20 to 100% which may be used in the dewatering of thermophilic sludges.Type: GrantFiled: August 14, 2001Date of Patent: August 1, 2006Assignee: Ciba Specialty Chemicals Water Treatments Ltd.Inventors: Peter Ian Norman, Helen Elizabeth Read, Nils Berggren
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Publication number: 20010007771Abstract: Novel cationic polymers and cationic lipids, and methods of making and using the same, are provided. The cationic polymers and cationic lipids are useful for the delivery of nucleic acid polymers and oligomers to cells in vitro and in vivo.Type: ApplicationFiled: May 29, 1997Publication date: July 12, 2001Inventors: SEAN M. SULLIVAN, XIAO-YING MENG
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Patent number: 6245854Abstract: A hydrophilic coating composition for hydrophilically coating a metallic surface. The coating composition comprises a fluorocarbon-containing hydrophilic polymer comprising units of hydrophilic monomer and fluorocarbon-containing hydrophobic comonomer. The coating composition produces hydrophilic coatings on the metallic surface having a contact angle below about 50°.Type: GrantFiled: December 11, 1998Date of Patent: June 12, 2001Assignee: Visteon Global Technologies, Inc.Inventors: Chimere N. Obioha, Riad A. Farah, Dennis Schuetzle, Yun-xiang Zhang
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Patent number: 6051628Abstract: A water-resistant ink jet ink composition comprising from about 0.5% to about 5% by weight of a pigment, a carrier, and from about 0.1% to about 2% by weight of a photo-crosslinkable polymeric dispersant having the following formula:(A)x(B)y(C)zwherein:A represents repeating units of an ethylenically unsaturated group;B represents repeating units of an ethylenically unsaturated group containing at least one photo-crosslinkable group;C represents repeating units of an ethylenically unsaturated group which provides water-dispersibility or water-solubility to the dispersant;x is from 0% to 80 mole %;y is from 0.1% to 100% mole %; and,z is from 0% to 99.9 mole %.Type: GrantFiled: September 2, 1998Date of Patent: April 18, 2000Assignee: Eastman Kodak CompanyInventors: John F. Bishop, Jin-Shan Wang
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Patent number: 5723142Abstract: A method of masking the cornea of an eye during surgical application of laser energy by forming an ablatable mask on the eye.Type: GrantFiled: October 11, 1994Date of Patent: March 3, 1998Inventor: Barry L. Bowyer
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Patent number: 5277911Abstract: Balanced pH, thermo-irreversible polyoxyalkylene polymer and ionic polysaccharide gels are ideal materials for use as an ablatable mask or coating over the cornea of the eye of a mammal during excimer laser keratectomy. The depth and smoothness of the ablated corneal surface can be controlled by molding the desired surface curvature into the mask surface using a contact lens as a mold which is pressed onto the gel surface coating the cornea.Type: GrantFiled: October 26, 1990Date of Patent: January 11, 1994Assignee: Mediventures, Inc.Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
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Patent number: 4855211Abstract: Phosphonium mordanting polymer, that is capable of fixing acid dyes and that comprises randomly distributed recurring units corresponding to the general formula (I) ##STR1## wherein: A represents a unit that is derived from a copolymerizable monomer capable of quenching singlet oxygen e.g. N-vinylimidazole or 2-methyl-1-vinylimidazole;B represents a unit that is derived from a copolymerizable monomer having a hydrophobic character e.g. acrylonitrile or methacrylonitrile;n represents an integer of from 1 to about 12;each of R.sub.1, R.sub.2 and R.sub.3 (same or different) represents a C.sub.1 -C.sub.8 alkyl group e.g. n-butyl, a substituted C.sub.1 -C.sub.8 alkyl group e.g. a methylol group, a cyanoethyl group or an aralkyl group, a cycloalkyl group, an aryl group e.g. phenyl, or a substituted aryl group;X.sup.- represents an acid anion e.g. a halogen anion e.g. Cl.sup.-, Br.sup.- or I.sup.-, or an anion derived from an inorganic acid e.g. NO.sub.3.sup.-, HSO.sub.4.sup.-, SO.sub.4.sup.--, H.sub.2 PO.sub.4.sup.Type: GrantFiled: August 4, 1988Date of Patent: August 8, 1989Assignee: Agfa-Gevaert, N.V.Inventors: Wilhelmus Janssens, Daniel M. Timmerman, Daniel A. Claeys
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Patent number: 4621120Abstract: Polymers having antibacterial activity are disclosed. The polymers are water-dispersible vinyl copolymers comprising(a) from 15 to 90 mole percent of recurring polymerized vinyl monomer units having a quaternary nitrogen cationic group containing an alkyl substituent having 14 to 20 carbon atoms and(b) from 10 to 85 mole percent recurring polymerized vinyl monomer units having a quaternary nitrogen cationic group having one or more alkyl substituents containing less than 14 carbon atoms.Type: GrantFiled: April 1, 1985Date of Patent: November 4, 1986Assignee: Eastman Kodak CompanyInventor: Kenneth R. Hollister
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Patent number: 4537695Abstract: Thermal energy storage compositions comprise a thermal energy storage material, for instance an inorganic hydrate that can undergo a change of hydration with accompanying release or storage of latent heat of hydration at a temperature of 10.degree. to 100.degree. C., held in a matrix of polymeric material, generally acrylic polymer. In one aspect of the invention the composition is in particulate form and so can, for instance, be poured into the heat exchanger in which it is to be used. In another aspect of the invention the storage material includes polyvalent metal ions and the polymeric material is a cationic polymer. In another aspect of the invention the composition is made by forming a solution, generally in water, of all the polymerizable material and most or all of the storage material and then polymerizing the polymerizable material in this solution. The solution is generally a low viscosity fluid and polymerization may be conducted in the heat exchanger vessel in which the composition is to be used.Type: GrantFiled: June 18, 1984Date of Patent: August 27, 1985Inventors: Malcolm Hawe, David Marshall, John R. Walker
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Patent number: 4501855Abstract: Comb cationic polymers are disclosed which are constituted by amine polymers rendered cationic and water dispersible with the aid of a solubilizing acid. The amine polymers are the product of reaction of: (1) a soluble polymer having an average molecular weight in the range of about 500 to about 10,000 and having a plurality of functional groups reactive with carboxyl or amine functionality (such as epoxy groups as supplied by an epoxidized polybutadiene); with (2) a solution addition copolymer of monoethylenically unsaturated monomers containing copolymerized tertiary amine monomer. The copolymer is terminated with a single carboxy group or a single amino hydrogen atom, and it is free of reactive groups capable of reacting with the functional groups of the soluble polymer, except for the single carboxyl group or the single amino hydrogen atom. The products are particularly useful in cationic electrocoating where they provide improved stability and better Coulombic efficiency.Type: GrantFiled: October 29, 1981Date of Patent: February 26, 1985Assignee: DeSoto, Inc.Inventor: Gerry K. Noren
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Patent number: 4470917Abstract: Thermal energy storage compositions comprise a thermal energy storage material, for instance an inorganic hydrate that can undergo a change of hydration with accompanying release or storage of latent heat of hydration at a temperature of 10.degree. to 100.degree. C., held in a matrix of polymeric material, generally acrylic polymer. In one aspect of the invention the composition is in particulate form and so can, for instance, be poured into the heat exchanger in which it is to be used. In another aspect of the invention the storage material includes polyvalent metal ions and the polymeric material is a cationic polymer. In another aspect of the invention the composition is made by forming a solution, generally in water, of all the polymerizable material and most or all of the storage material and then polymerizing the polymerizable material in this solution. The solution is generally a low viscosity fluid and polymerization may be conducted in the heat exchanger vessel in which the composition is to be used.Type: GrantFiled: February 10, 1983Date of Patent: September 11, 1984Assignee: Allied Colloids LimitedInventors: Malcolm Hawe, David Marshall, John R. Walker
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Patent number: 4452878Abstract: A class of quaternary nitrogen-containing polymeric materials, which upon contact with alkali provide substantial light-absorbing or opacifying properties, is disclosed. The polymeric materials comprise repeating units of the formula: ##STR1## wherein the cyclic quaternary nitrogen-containing moiety is a 2-, 3-, or 4-pyridinium moiety; R.sup.1 and R.sup.2 are independently hydrogen, alkyl, substituted alkyl, cycloalkyl, aryl, aralkyl, alkaryl, halo, or R.sup.1 and R.sup.2 together comprise the atoms necessary to complete a six-membered, substituted or unsubstituted benzenoid ring; R.sup.3 is hydrogen or alkyl; X is an anion; and Y is hydrogen, alkyl, substituted alkyl, cycloalkyl, aryl, aralkyl, alkaryl or halo.Type: GrantFiled: May 9, 1983Date of Patent: June 5, 1984Assignee: Polaroid CorporationInventors: Louis Locatell, Jr., Charles M. Zepp
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Patent number: 4450224Abstract: Photographic element and diffusion transfer assemblages are described which contain a novel mordant comprising recurring units having the formula ##STR1## wherein A represents recurring units derived from an .alpha.,.beta.-ethylenically unsaturated monomer;R represents hydrogen or methyl;each R.sup.1 independently represents hydrogen or an alkyl group of 1 to about 4 carbon atoms;Q represents an alkyl, substituted alkyl, cycloalkyl, aryl or substituted aryl group;X.sup..crclbar. represents an anion;w is from about 0 to about 25 mole percent;x is from about 30 to about 90 mole percent;y is from about 8 to about 65 mole percent;andz is from about 2 to about 9 mole percent.Type: GrantFiled: July 6, 1983Date of Patent: May 22, 1984Assignee: Eastman Kodak CompanyInventors: Gerald W. Klein, Robert A. Snow, Richard C. Sutton
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Patent number: 4308335Abstract: A mordant layer for a color diffusion transfer photographic element containing a cationic polymer latex obtained by emulsion-polymerizing a monomer represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.2 each represents hydrogen or an alkyl group having from 1 to 6 carbon atoms; R.sub.3, R.sub.4, and R.sub.5 each can represent an alkyl group having from 1 to 20 carbon atoms, or an aralkyl group having from 7 to 10 carbon atoms, or any two or R.sub.3, R.sub.4, and R.sub.5 together can form a ring; and X.sup..crclbar. represents an anion; as a shell component for a core component of dispersed particles of a polymer latex obtained by emulsion-polymerizing a water-insoluble monomer or monomers other than the monomer of formula (I).Type: GrantFiled: July 21, 1980Date of Patent: December 29, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Tatsuya Yamamoto, Kazunobu Katoh