Mixed With Carboxylic Acid Or Derivative Or Polymer Derived Therefrom Patents (Class 525/408)
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Patent number: 6043313Abstract: The present invention relates to a composite made by the process of melt mixing (a) a polymer having at least one isocyanate reactive group, wherein the polymer is from 30 to 90% by weight of the composite; (b) a thermoplastic polyurethane at from 0.1 to less than 10% by weight of the composite; and (c) a reinforcing fiber at from 9.9 to 60% by weight of the composite, wherein the sum of the weight percentages of components (a)-(c) is equal to 100%, wherein the polymer (a) is not a polyamide. The invention further relates to a composite prepared by the process of melt mixing (a) a polymer having at least one isocyanate reactive group, wherein the polymer is from 25 to 90% by weight of the composite; (b) a thermoplastic polyurethane at from 0.1 to 10% by weight of the composite; (c) a reinforcing fiber at from 9.8 to 60% by weight of the composite, and (d) an epoxy compound at from 0.1 to 5% by weight of the composite, wherein the sum of the weight percentages of components (a)-(d) is equal to 100%.Type: GrantFiled: August 26, 1998Date of Patent: March 28, 2000Assignee: Eastman Chemical CompanyInventors: Andrew E. Brink, Jeffrey T. Owens
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Patent number: 6030495Abstract: Novel substantially odor-free polymeric thiol-containing antioxidant compounds suitable for preventing light induced brightness reversion or yellowing of pulps and papers and polymeric materials are described. The novel compounds are based on a polymeric backbone having thiolactate or thioglycolate groups grafted onto the ends thereof and are soluble in water or alcohol.Type: GrantFiled: October 8, 1997Date of Patent: February 29, 2000Assignee: Queens's University at KingstonInventors: Jeffrey K. S. Wan, M. Catherine Depew
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Patent number: 6028164Abstract: Crosslinked compositions formed from a water-insoluble copolymer are disclosed. These compositions are copolymers having a bioresorbable region, a hydrophilic region and at least two crosslinkable functional groups per polymer chain. These compositions are able to form hydrogels in aqueous environments when crosslinked. These hydrogels are good sealants for implantable prostheses when in contact with an aqueous environment. In addition, such hydrogels can be used as delivery vehicles for therapeutic agents.Type: GrantFiled: February 1, 1999Date of Patent: February 22, 2000Assignee: Meadox Medicals, Inc.Inventor: Gary L. Loomis
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Patent number: 6005067Abstract: A process for the continuous production of polylactide polymers from lactic acid which incorporates removal of water or a solvent carrier to concentrate the lactic acid feed followed by polymerization to a low-molecular-weight prepolymer. This prepolymer is fed to a reactor in which a catalyst is added to facilitate generation of lactide, the depolymerization product of polylactic acid. The lactide generated is continuously fed to a distillation system as a liquid or vapor wherein water and other impurities are removed. The resultant purified liquid lactide is fed directly to a polymerization process.Type: GrantFiled: January 28, 1998Date of Patent: December 21, 1999Assignee: Cargill IncorporatedInventors: Patrick Richard Gruber, Eric Stanley Hall, Jeffrey John Kolstad, Matthew Lee Iwen, Richard Douglas Benson, Ronald Leo Borchardt
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Patent number: 6001935Abstract: Polyoxypropylamines, polypropylene oxide polymers endcapped on one or both ends with carbamate groups, di- or tri-carboxylic acids, carboxylic acid halides, or esters or mixtures comprising one of the above with a hydrophilic polyester copolymer having repeating segments of ethylene terephthalate units containing 10-50% by weight of polyoxyethylene terephthalate units useful for imparting a durable hydrophilic coating to polyester, polypropylene, polyethylene, cotton, polyamide or polyaramid fabric or fiber are disclosed.Type: GrantFiled: November 10, 1997Date of Patent: December 14, 1999Assignee: Stephan CompanyInventor: Charles Francis Palmer, Jr.
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Patent number: 5998545Abstract: The present invention relates to a mixture of polymers (A) having polyamide blocks and copolymers (B) comprising vinylaromatic units and unsaturated carboxylic anhydride units, the quantity of (B) being sufficient for the melt index (or melt flow index, MFI) of the mixture of (A) and (B) to be less than the melt index of (A) alone.It also relates to masterbatches of (A) and (B).Type: GrantFiled: January 22, 1998Date of Patent: December 7, 1999Assignee: Elf Atochem S.A.Inventors: Denis Melot, Alain Bouilloux, Benoit Ernst
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Patent number: 5997568Abstract: Bioabsorbable polymers and copolymers having accelerated mass loss, and more particularly bioabsorbable polymers and/or copolymers blended with particles of bioabsorbable polymers as well as surgical articles made totally or in part therefrom, including both monofilament and multifilament sutures, are provided.Type: GrantFiled: January 17, 1997Date of Patent: December 7, 1999Assignee: United States Surgical CorporationInventor: Cheng-Kung Liu
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Patent number: 5989697Abstract: Claimed is a copolyether amide having a melting point in the range of 180.degree. to 260.degree. C., incorporating at least 10 wt. % and not more than 30 wt. % of ethylene oxide groups, and composed of 30 to 60 wt. % of polyamide segments and 70 to 40 wt. % of segments derived from a (cyclo)aliphatic or aromatic dicarboxylic acid or a dimeric fatty acid and a polyoxyalkylene diamine derived from a polyoxyalkylene group having a molecular weight of 600 to 6000 and an atomic ratio of carbon to oxygen of 2.0 to 4.3. Also claimed is a non-porous, waterproof film having a water vapor permeability of at least 1000 g/m.sup.2 day determined at 30.degree. C. and 50% RH in accordance with ASTM E96-66 which is based on a the use of these films in rainwear, shoes, tents, chairs, as mattress covers and underslating, for medical purpose garments, and for the manufacture of dressings.Type: GrantFiled: November 24, 1997Date of Patent: November 23, 1999Assignee: Akzo Nobel, NVInventor: Bert Gebben
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Patent number: 5986043Abstract: Hydrogels of polymerized and crosslinked macromers comprising hydrophilic oligomers having biodegradable monomeric or oligomeric extensions, which biodegradable extensions are terminated on free ends with end cap monomers or oligomers capable of polymerization and cross linking are described. The hydrophilic core itself may be degradable, thus combining the core and extension functions. Macromers are polymerized using free radical initiators under the influence of long wavelength ultraviolet light, visible light excitation or thermal energy. Biodegradation occurs at the linkages within the extension oligomers and results in fragments which are non-toxic and easily removed from the body. Preferred applications for the hydrogels include prevention of adhesion formation after surgical procedures, controlled release of drugs and other bioactive species, temporary protection or separation of tissue surfaces, adhering of sealing tissues together, and preventing the attachment of cells to tissue surfaces.Type: GrantFiled: August 20, 1996Date of Patent: November 16, 1999Assignee: Board of Regents, The University of Texas SystemInventors: Jeffrey A. Hubbell, Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Neil P. Desai, Jennifer L. Hill-West
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Patent number: 5972514Abstract: The invention relates to a coating composition for PVC sections, based on a polymeric vehicle, a crosslinking agent, and a thermoplastic resin powder. The coating composition is particularly useful for coating PVC sections for windows, shutters, and doors. PVC joinery coated with the composition of the invention has exceptional impact strength and resistance to abrasion, friction, and inclement weather.Type: GrantFiled: October 11, 1996Date of Patent: October 26, 1999Assignee: Elf Atochem S.A.Inventors: Bruno D'Herbecourt, Thierry Moulin
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Patent number: 5959060Abstract: The present invention relates to polyisocyanate-modified dicarboxylic acid derivatives obtainable by reacting organic polyisocyanates with excess quantities, based on the equivalent ratio of NCO/COOH groups, of dicarboxylic acid (poly)anhydrides containing free carboxyl groups and water. The present invention also relates to coating compositions, in particular powder coating compositions, containing these polyisocyanate-modified dicarboxylic acids as curing agents for resins containing epoxy groups.Type: GrantFiled: April 16, 1998Date of Patent: September 28, 1999Assignee: Bayer AktiengesellschaftInventors: Walter Schafer, Knud Reuter, Hanns-Peter Muller, Hans-Ulrich Meier-Westhues, Ulrich Freudenberg, Lothar Kahl
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Patent number: 5959042Abstract: A material is provided comprising: (a) a polyamide; (b) a polymer having PA blocks and polyether PEG blocks; (c) optionally a polyolefin; (d) a functionalized polyolefin; the various constituents being present in amounts by weight, a, b, c and d such that: a>0; b>0; c+d>0; a+b+c+d=100; with a/b>0.2; (a+b)/(c+d)>1; and b/(a+b+c+d)<0.5. A film which is non-porous but breathable, i.e. porous to water vapor but not to water, and an antistatic object obtained from this material are also provided.Type: GrantFiled: November 14, 1997Date of Patent: September 28, 1999Assignee: Elf Atochem S.A.Inventors: Alain Bouilloux, Patrick Alex
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Patent number: 5945487Abstract: The invention provides a thermosetting powder coating composition comprising (A) a vinyl copolymer having a number average molecular weight of 1,500 to 6,000, a molecular weight distribution of 1.0 to 1.5 as represented by a weight average molecular weight/a number average molecular weight and a glass transition temperature of 40 to 100.degree. C., the copolymer containing at least one species of functional group selected from the class consisting of epoxy group, carboxyl group and hydroxyl group, and (B) a curing agent. The thermosetting powder coating composition of the invention is superior in any of the finished appearance of coating film and the blocking resistance.Type: GrantFiled: January 23, 1997Date of Patent: August 31, 1999Assignee: Kansai Paint Company, Ltd.Inventors: Toshio Ohkoshi, Yugen Kawamoto, Toshio Ogasawara, Motoshi Yabuta, Koji Yamada
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Patent number: 5942176Abstract: Synthtic fibers can be effectively lubricated by applying a lubricant containing polyether polyester block copolymer shown as follows: ##STR1## where X, Z, A.sup.1, Y.sup.1, and R.sup.1 are each of a specified structure and integers a, b, c, p and q satisfy certain conditions.Type: GrantFiled: December 22, 1997Date of Patent: August 24, 1999Assignee: Takemoto Yushi Kabushiki KaishaInventors: Tsukasa Fujii, Michiharu Nagai, Yukio Komatsu, Yasushi Maeshima
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Patent number: 5929177Abstract: The present invention provides a block polymer which has functional groups on its both ends, and which comprises hydrophilic/hydrophobic segments. As for the functional groups on its both ends, the block polymer has amino group, carboxyl group or mercapto group on .alpha.-terminal, and hydroxyl group, carboxyl group, aldehyde group or vinyl group on .omega.-terminal. Hydrophilic segment comprises polyethylene oxide, while hydrophobic segment is derived from lactide, lactone or (meth)acrylic acid ester. The block polymer of this invention forms a polymeric micelle which is usable as bio-compatible materials.Type: GrantFiled: February 5, 1998Date of Patent: July 27, 1999Assignee: Kazunori KataokaInventors: Kazunori Kataoka, Masao Kato, Yukio Nagasaki, Teruo Okano
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Patent number: 5919455Abstract: Branched, substantially non-antigenic polymers are disclosed. Conjugates prepared with the polymers and biologically active molecules such as proteins and peptides demonstrate extended circulating life in vivo. Substantially fewer sites on the biologically active material are used as attachment sites. Methods of forming the polymer, conjugating the polymers with biologically active moieties and methods of using the conjugates are also disclosed.Type: GrantFiled: March 20, 1997Date of Patent: July 6, 1999Assignee: Enzon, Inc.Inventors: Richard B. Greenwald, Anthony J. Martinez
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Patent number: 5914386Abstract: The invention relates to a novel copolyester elastomer essentially made up of A: hard polyester segments made up of repeating units derived from an aliphatic diol and an aromatic dicarboxylic acid and B: soft polyester segments made up of repeating units derived from B1: an aliphatic carbonate and, if desired, up to 60% by weight of B, B2: an aliphatic diol and an aliphatic dicarboxylic acid or B3: a lactone, said hard and soft segments being bonded via ester bonds to form copolyesterester units and said copolyesterester units being connected to one another by a urethane group.The novel copolyester elastomer has an exceptionally high thermo-oxidative resistance and resistance to hydrolysis and is used, inter alia, in bellows, seals, pipes, hoses and cable sheathings.Type: GrantFiled: December 8, 1997Date of Patent: June 22, 1999Assignee: DSM N.V.Inventors: Henk W. Berendse, Gerard H. Werumeus Buning, Christiaan Schroder
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Patent number: 5900245Abstract: An improved barrier or drug delivery system which is highly adherent to the surface to which it is applied is disclosed, along with methods for making the barrier. In the preferred embodiment, the system is compliant, in that it is capable of conforming to the three dimensional structure of a tissue surface as the tissue bends and deforms during healing processes. The barrier or drug delivery systems is formed as a polymeric coating on tissue surfaces by applied a polymerizable monomer to the surface, and then polymerizing the monomer. The polymerized compliant coating preferably is biodegradable and biocompatible, and can be designed with selected properties of compliancy and elasticity for different surgical and therapeutic applications.Type: GrantFiled: September 23, 1996Date of Patent: May 4, 1999Assignee: Focal, Inc.Inventors: Amapreet S. Sawhney, Michelle D. Lyman, Peter K. Jarrett, Ronald S. Rudowsky
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Patent number: 5891960Abstract: Coating compositions comprised of a film forming polymer which is the reaction product of (a) a compound containing pendant and/or terminal hydroxyl or epoxy functional groups and (b) citric acid or citric acid anhydride. The coating compositions have enhanced adhesion to galvanized and galvanealed steel substrates without the use of a chrome containing wash primer.Type: GrantFiled: September 12, 1997Date of Patent: April 6, 1999Assignee: PPG Industries, Inc.Inventors: James A. Claar, Karl F. Schimmel, Shanti Swarup, Bruce A. Connelly
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Patent number: 5888597Abstract: The invention relates to a packaging comprising a thermoplastic film based on a polymer containing polyamide blocks and polyether blocks, said polymer being permeable to water vapor, to ethylene, to CO.sub.2 and to oxygen, such that the permeability to CO.sub.2 is very much greater than the permeability to oxygen. The invention is particularly useful for making sachets in order to conserve fresh fruit, vegetables or meat.Type: GrantFiled: April 10, 1996Date of Patent: March 30, 1999Assignee: Elf Atochem S.A.Inventors: Alain Frey, Roland Leroux, Laurent Fischer
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Patent number: 5889124Abstract: A curable resin composition containing (a) an oxyalkylene polymer which comprises at least one silicon-containing group having at least one hydroxyl or hydrolyzable group bonded to a silicon atom, (b) an epoxy resin, (c) a ketimine compound and (d) a carbonyl compound, which has improved storage stability.Type: GrantFiled: March 4, 1997Date of Patent: March 30, 1999Assignee: Kaneka CorporationInventors: Katsuhiro Ando, Jun Hattori, Toshifumi Hirose
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Patent number: 5880222Abstract: Latexes are thickened by compounds of the formula:R.sup.1 -(O-A).sub.a -B.sup.1 -R.sup.2 -(B.sup.2 -R.sup.3).sub.d -(B.sup.3 -(A'-O).sub.b-f -(A'-B.sup.4).sub.f -R.sup.4 -(B.sup.5 -R.sup.5).sub.e).sub.n -B.sup.6 -(A"O).sub.c -R.sup.6wherein:R.sup.1 and R.sup.6 are monovalent hydrophobic groups independently selected from the group consisting of an aliphatic group, a substituted aliphatic group, an aromatic group, and a substituted aromatic group;R.sup.2 and R.sup.4 are independently selected from the group consisting of aliphatic, substituted aliphatic, aromatic, or substituted aromatic radicals, each radical being divalent or trivalent;R.sup.3 and R.sup.5 are independently selected from hydrogen, lower alkyl and lower aralkyl;B.sup.1, B.sup.2, B.sup.3, B.sup.4, B.sup.5, and B.sup.6 are linking groups independently selected from the group consisting of an oxygen atom (to form the ether linkage --O--), a carboxylate group (to form an ester linkage R.sup.2 --C(O)--O-- and/or R.sup.Type: GrantFiled: September 19, 1997Date of Patent: March 9, 1999Assignee: Henkel CorporationInventors: Michael S. Wiggins, Reuben H. Grinstein
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Patent number: 5874507Abstract: The specification discloses a method and additive for increasing the surface activity of non-polar polymeric materials, and a non-polar polymeric material exhibiting increased surface activity. The invention employs an additive of the formulaA-B-A.sup.1wherein each of the A and A.sup.1 blocks which may be the same or different has a number molecular weight in the range of from about 200 to about 1000 daltons and is selected from the group substituted and unsubstituted alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl and alkylaryl units derived from one or more esters, organic acids, organic halides or organic acid halides, and units derived from alkyl or aryl isocyanates or ester-amides. The B-block is a polyepichlorohydrin unit derived from a polyepichlorohydrin polyol having at least two terminal hydroxyl groups and having an average molecular weight in the range of from about 400 to about 4000 daltons.Type: GrantFiled: September 15, 1997Date of Patent: February 23, 1999Assignee: Arizona Chemical CompanyInventors: Xinya Lu, Eric S. Gardiner
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Patent number: 5872191Abstract: A process for producing a polyoxyalkylene derivative substituted with succinimidyl group which comprises reacting a polyoxyalkylene compound having carboxyl group at ends with N-hydroxysuccinimide in an inert solvent in the presence of dicyclohexylcarbodiimide; dissolving an obtained reaction product into chloroform, an amount by weight of chloroform being 0.5 to 10 times as much as an amount by weight of the polyoxyalkylene compound having carboxyl group at ends; and crystallizing the polyoxyalkylene derivative substituted with succinimidyl group by adding an aliphatic hydrocarbon having 5 to 8 carbon atoms to a resultant solution, an amount by weight of the aliphatic hydrocarbon being 2 to 10 times as much as an amount by weight of chloroform. Materials can be handled with safety, and a highly pure polyoxyalkylene derivative substituted with succinimidyl group which does not cause turbidity in an aqueous solution and has an excellent quality as a material for drugs can be produced.Type: GrantFiled: June 3, 1997Date of Patent: February 16, 1999Assignee: NOF CorporationInventors: Kouzoh Sanchika, Tohru Yasukohchi, Kei-ichi Maruyama, Syunsuke Ohhashi
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Patent number: 5858746Abstract: Water soluble macromers are modified by addition of free radical polymerizable groups, such as those containing a carbon-carbon double or triple bond, which can be polymerized under mild conditions to encapsulate tissues, cells, or biologically active materials. The polymeric materials are particularly useful as tissue adhesives, coatings for tissue lumens including blood vessels, coatings for cells such as islets of Langerhans, coatings, plugs, supports or substrates for contact with biological materials such as the body, and as drug delivery devices for biologically active molecules.Type: GrantFiled: January 25, 1995Date of Patent: January 12, 1999Assignee: Board of Regents, The University of Texas SystemInventors: Jeffrey A. Hubbell, Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Neil P. Desai, Jennifer L. Hill, Syed F. A. Hossainy
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Patent number: 5859135Abstract: The present invention relates generally to aqueous coating compositions comprising a resin component including a functional group-containing crosslinkable resin and, optionally, a curing/crosslinking agent for functional groups of the crosslinkable resin. More specifically, the resin component includes, at least in part, a special anionically or anionically/non-ionically stabilized functional group-containing crosslinkable resin which can function as either the primary crosslinkable resin (self-emulsifying system) or as a reactive emulsifier for other lipophilic crosslinkable resins (stabilized system).Type: GrantFiled: April 15, 1993Date of Patent: January 12, 1999Assignee: Akzo Nobel NVInventors: Willy Frans Anna Doomen, Mario Martinus Maria van Wingerde
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Patent number: 5856415Abstract: A method for producing a metal-containing transparent polymer by the reaction of a metal carboxylate, with a clear setting resin system comprising a thermosetting resin and a curing agent. The reaction occurs in a temperature in the range of from about 0.degree. to about 100.degree. C. under conditions which prevent air from being entrapped in the mixture, either during mixing of the reagents or during reaction. The metal carboxylate contains from about 20 to about 60 weight percent of metal. The reagents react for a time sufficient to form a transparent polymer. The resins include preferably epoxies, polyesters, polyurethane, polyisocyanurate, polyether sulfones, polyimides, and mixtures of two or more of these thermoset polymers. The final metal-containing transparent polymer preferably contains at least 15% by weight of the metal. Preferred metals include antimony, barium, bismuth, cadmium, cerium, cobalt, copper, iron, lead, molybdenum, tungsten, ranadium, and zirconium.Type: GrantFiled: August 28, 1997Date of Patent: January 5, 1999Assignee: Bar-Ray Products, Inc.Inventors: Arthur Lagace, Ray C. Lapof
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Patent number: 5854382Abstract: Crosslinked compositions formed from a water-insoluble copolymer are disclosed. These compositions are copolymers having a bioresorbable region, a hydrophilic region and at least two crosslinkable functional groups per polymer chain. These compositions are able to form hydrogels in aqueous environments when crosslinked. These hydrogels are good sealants for implantable prostheses when in contact with an aqueous environment. In addition, such hydrogels can be used as delivery vehicles for therapeutic agents.Type: GrantFiled: August 18, 1997Date of Patent: December 29, 1998Assignee: Meadox Medicals, Inc.Inventor: Gary L. Loomis
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Patent number: 5834274Abstract: Water soluble macromers are modified by addition of free radical polymerizable groups, such as those containing a carbon-carbon double or triple bond, which can be polymerized under mild conditions to encapsulate tissues, cells, or biologically active materials. The polymeric materials are particularly useful as tissue adhesives, coatings for tissue lumens including blood vessels, coatings for cells such as islets of Langerhans, coatings, plugs, supports or substrates for contact with biological materials such as the body, and as drug delivery devices for biologically active molecules.Type: GrantFiled: June 6, 1995Date of Patent: November 10, 1998Assignee: Board of Regents, The University of Texas SystemInventors: Jeffrey A. Hubbell, Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Neil P. Desai, Jennifer L. Hill, Syed F. A. Hossainy
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Patent number: 5824333Abstract: The present invention provides injectable, bioabsorbable liquid copolymers suitable for use as a soft tissue repair or augmentation material in animals comprising a liquid polymer selected from the group consisting of liquid polymers of a plurality of at least two different first lactone repeating units and liquid polymers of a plurality of first lactone and second lactone repeating units; wherein the first lactone repeating units are selected from the group consisting of .epsilon.-caprolactone repeating units, trimethylene carbonate repeating units, ether lactone repeating units (which for the purpose of this invention shall mean 1,4-dioxepan-2-one and 1,5-dioxepan-2-one) and combinations thereof and the second lactone repeating units are selected from the group consisting of glycolide repeating units, lactide repeating units (which for the purpose of this invention are defined to be L-lactide, D-lactide, or D,L-lactide repeating units), p-dioxanone repeating units and combinations thereof.Type: GrantFiled: November 6, 1996Date of Patent: October 20, 1998Assignee: Ethicon, Inc.Inventors: Angelo G. Scopelianos, Rao S. Bezwada, Steven C. Arnold
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Patent number: 5807929Abstract: At least bis-imido 1,3,5-triazines and processes of preparing the same are disclosed. Also disclosed are prepolymers having at least bis-imido functionality and curable compositions comprising at least bis-imido 1,3,5-triazines or prepolymers thereof in combination with active hydrogen and/or epoxy functional materials. The at least bis-imido 1,3,5-triazines and prepolymers may be advantageously employed as crosslinking agents which crosslink by a ring opening reaction that eliminates the release of volatile organic compounds.Type: GrantFiled: February 28, 1997Date of Patent: September 15, 1998Assignee: Cytec Technology Corp.Inventors: Lon-Tang Wilson Lin, Robert G. Lees, William F. Jacobs, III, Subban Ramesh
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Patent number: 5807973Abstract: A nonwoven fabric comprised of a lactide polymer. The lactide polymer comprises a plurality of poly(lactide) polymer chains, residual lactide in concentration of less than about 2 percent and water in concentration of less than about 2000 parts-per-million. A process for manufacturing a nonwoven fabric with the lactide polymer composition is also disclosed.Type: GrantFiled: September 27, 1995Date of Patent: September 15, 1998Assignee: Cargill, IncorporatedInventors: Patrick Richard Gruber, Jeffrey John Kolstad, Christopher M. Ryan, Eric Stanley Hall, Robin Sue Eichen Conn
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Patent number: 5792814Abstract: There are herein disclosed a method for preparing a modified resin which comprises thermal/reaction by the use of a norbornenyl group-containing compound typified by norbornenecarboguanamine or its derivative, a method for preparing an epoxy-modified resin which comprises the step of reacting the above-mentioned modified resin and an epoxide, a flame-retarding method, a thermal stabilization method, a compatibilizing method and a surface modification method which comprise utilizing the modified resin, as well as a coating resin composition and an adhesive resin composition containing the modified resin.According to the preparation methods of the present invention, the deterioration of a material scarcely occurs, and a functional group which is excellent in flame retardancy, thermal stability, compatibility and the like can be introduced to the resins.Type: GrantFiled: August 5, 1997Date of Patent: August 11, 1998Assignee: Mitsui Chemicals, Inc.Inventors: Tetsuya Oishi, Kazuo Sugazaki, Jin Suzuki
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Patent number: 5773507Abstract: An antistatic composition containing a crosslinked thermosetting resin formed by reacting, in the presence of a water-soluble solvent, (a) a polyaminoamide having unreacted primary and secondary amine groups and (b) a polychlorohydrin derivative.Type: GrantFiled: August 25, 1995Date of Patent: June 30, 1998Assignee: Henkel CorporationInventors: Michael J. Incorvia, Stephen A. Fischer
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Patent number: 5767189Abstract: Compositions useful for imparting durable hydrophilic polymer coatings to polyester, polypropylene or polyethylene fibers or fabrics comprising A) an aqueous dispersion of 1) a hydrophilic copolyester having repeating segments of a polyoxyethylene diester and a polyalkylene diester, and 2) a polypropylene oxide polymer capped on one or both ends with an alkyl or ester group, said polymer having more than 4 propylene oxide units and an average molecular weight of at least about 300; B) a mixture of 1) an organic solvent, 2) a hydrophilic copolyester having repeating segments of a polyoxyethylene diester and a polyalkylene diester, and 3) a polypropylene oxide polymer capped on one or both ends with an alkyl or monoester group, said polymer having more than 4 propylene oxide units and an average molecular weight of at least about 300; C) an aqueous dispersion of 1) a hydrophilic copolyester having repeating segments of a polyoxyethylene diester and a polyalkylene diester, and 2) a polypropylene glycol having anType: GrantFiled: May 31, 1996Date of Patent: June 16, 1998Assignee: E. I. duPont de Nemours and CompanyInventor: Charles Francis Palmer, Jr.
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Patent number: 5760142Abstract: Epoxide-amine dendrimers synthesized by a repetitive and step-wise addition reaction of epoxides comprising functional moieties which are available for conversion into amino groups followed by a reaction of these groups to primary amino moieties. The amino terminated dendrimers are reacted with (2,3-epoxypropoxy) methacrylate, a monoepoxide and/or a monoisocyante. The methacrylate terminated dendrimers are polymerizable using redox initiators and/or photoinitiators. The resulting dendrimers show a very low volume shrinkage from that of the starting materials, on the order of less than about 5 percent by volume.Type: GrantFiled: December 4, 1996Date of Patent: June 2, 1998Assignee: Dentsply DeTrey G.m.b.H.Inventor: Joachim E. Klee
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Patent number: 5756593Abstract: The present invention is directed to methods of preparing high purity polyalkylene oxide carboxylic acids. The methods include reacting a polyalkylene oxide such as polyethylene glycol with a t-butyl haloacetate in the presence of a base followed by treatment with an acid such as trifloroacetic acid. The resultant polymer carboxylic acids are of sufficient plurty so that expensive and time consuming purification steps required for pharmaceutical grade polymers are avoided.Type: GrantFiled: June 27, 1997Date of Patent: May 26, 1998Assignee: Enzon, Inc.Inventors: Anthony J. Martinez, Richard B. Greenwald
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Patent number: 5747603Abstract: Difunctional, hydroxyl-terminated polymers in which the terminal hydroxyl group is non-primary or hindered are end-capped to provide unhindered, primary, terminal hydroxyl groups which promote an improved cure and improved mechanical properties of the cured elastomer. End-capping chemicals have an hydroxyl-reactive group at one end and a group at the other end which is removable to provide a primary, unhindered hydroxyl group. Short-chain, hydroxyl-terminated polymers are chain-extended with a diisocyanate.Type: GrantFiled: May 19, 1987Date of Patent: May 5, 1998Assignee: Thiokol CorporationInventors: Jerald C. Hinshaw, R. Scott Hamilton
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Patent number: 5747637Abstract: A bioabsorbable, ternary block copolymer consisting essentially of (A) polylactic acid segment, (B) poly(.epsilon.-caprolactone) segment and (C) polyglycolic acid segment, preparation process of the block copolymer, and medical molded articles prepared from said block copolymer. The bioabsorbable block copolymer is excellent in mechanical strength and flexibility and has moderate hydrolyzability and is especially utilized for a surgical monofilament suture.Type: GrantFiled: August 28, 1996Date of Patent: May 5, 1998Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Hosei Shinoda, Masanobu Ajioka, Kimitaka Chida
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Patent number: 5744528Abstract: The present invention provides a method of preparing an orthopedic cast comprising the step of coating a porous flexible substrate with a water-curable resin composition composed of a water-reactive alkoxysilane terminated resin having at least one hydrolyzable group per molecule. The resin composition has a viscosity of no greater than about 500 Pa-s under ambient conditions and contains less than about 1 wt-% of a solvent, based on the total weight of the resin composition.Type: GrantFiled: May 15, 1995Date of Patent: April 28, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Andrew Callinan, Matthew T. Scholz
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Patent number: 5739176Abstract: A biodegradable polymer is provided for use in providing syringeable, in-situ forming, solid biodegradable implants for animals. The polymer is placed into the animal in liquid form and cures to form the implant in-situ. A thermoplastic system to form said implant comprises the steps of dissolving a non-reactive polymer in biocompatible solvent to form a liquid, placing the liquid within the animal, and allowing the solvent to dissipate to produce the implant. An alternative, thermosetting system comprises mixing together effective amounts of a liquid acrylic ester terminated, biodegradable prepolymer and a curing agent, placing the liquid mixture within an animal and allowing the prepolymer to cure to form the implant. Both systems provide a syringeable, solid biodegradable delivery system by the addition of an effective level of biologically active agent to the liquid before injection into the body.Type: GrantFiled: March 18, 1994Date of Patent: April 14, 1998Assignee: Atrix Laboratories, Inc.Inventors: Richard L. Dunn, James P. English, Donald R. Cowsar, David D. Vanderbilt
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Patent number: 5721322Abstract: The specification discloses a method and additive for increasing the surface activity of non-polar polymeric materials, and a non-polar polymeric material exhibiting increased surface activity. The invention employs an additive of the formulaA-B-A.sup.1wherein each of the A and A.sup.1 blocks which may be the same or different has a number molecular weight in the range of from about 200 to about 1000 daltons and is selected from the group substituted and unsubstituted alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl and alkylaryl units derived from one or more esters, organic acids, organic halides or organic acid halides, and units derived from alkyl or aryl isocyanates or ester-amides. The B-block is a polyepichlorohydrin unit derived from a polyepichlorohydrin polyol having at least two terminal hydroxyl groups and having an average molecular weight in the range of from about 400 to about 4000 daltons.Type: GrantFiled: January 24, 1997Date of Patent: February 24, 1998Assignee: Arizona Chemical CompanyInventors: Xinya Lu, Eric S. Gardiner
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Patent number: 5714618Abstract: A polymer having a blocked terminal group according to the present invention, represented by the following Formula (I): ##STR1## where R is an alkylene group containing 1 to 20 carbon atoms; X.sub.1 is an acyl group containing 2 to 50 carbon atoms; Y is H, an alkyl group containing 1 to 50 carbon atoms or an alkenyl group containing 1 to 50 carbon atoms; m is a positive integer; and n.sub.1 is 0 or a positive integer.Type: GrantFiled: January 9, 1997Date of Patent: February 3, 1998Assignee: Toyo Boseki Kabushiki KaishaInventors: Kunio Kimura, Takeshi Ito, Tomohiro Aoyama, Keiichi Uno, Kiyoshi Hotta, Minako Arichi
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Patent number: 5710214Abstract: Provided are novel thermosetting powder coating compositions which are useful for coating metal articles and protecting such articles from acidic corrosion. The compositions are comprised of an epoxy containing acrylic copolymer crosslinked with both an aliphatic dibasic acid and a blocked polyisocyanate.Type: GrantFiled: April 30, 1996Date of Patent: January 20, 1998Assignee: PPG Industries, Inc.Inventors: Chun-Tzer Chou, Robert B. Barbee
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Patent number: 5702688Abstract: Preventive as well as therapeutic treatment to alleviate cosmetic conditions and symptoms of dermatologic disorders with amphoteric compositions containing alpha hydroxyacids, alpha ketoacids, related compounds or polymeric forms of hydroxyacids is disclosed. The cosmetic conditions and the dermatologic disorders in which the amphoteric compositions and the polymeric compounds may be useful include dry skin, dandruff, ache, keratoses, psoriasis, eczema, pruritus, age spots, lentigines, melasmas, wrinkles, warts, blemished skin, hyperpigmented skin, kyperkeratotic skin, inflammatory dermatoses, skin changes associated with aging, and skin requiring cleansers.Type: GrantFiled: October 7, 1993Date of Patent: December 30, 1997Assignee: Tristrata Technology, Inc.Inventors: Ruey J. Yu, Eugene J. Van Scott
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Patent number: 5686507Abstract: High friction coatings, compositions for producing such coatings, and non-skid coatings for ships and decks are disclosed. Included are compositions comprising a curable resin, a filler, and aramid in the form of fibers or flakes.Type: GrantFiled: August 3, 1994Date of Patent: November 11, 1997Assignee: The Morgan Crucible Company p.l.c.Inventors: Jules J. Hermele, David P. Robinson
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Patent number: 5681906Abstract: The present invention provides for amino-crosslinkable coating formulations based on a mixture of a di- or polyhydroxy functional polymeric component selected from the group consisting of diesters, polyesters, alkyd polymers, acrylic polymers and polycarbonate polymers, a crosslinking agent such as a methylol (alkoxymethyl) amino crosslinking agent, and a reactive additive which is the ester reaction product of a phenol carboxylic acid, preferably para-hydroxybenzoic acid, and an epoxy compound selected from glycidyl ethers, glycidyl esters, linear epoxies and aromatic epoxies. The crosslinkable compositions of this invention may be used to prepare curable coating and paint formulations, and also may contain other ingredients such as a crosslinking catalyst, fillers, pigments and the like. When cured, the coatings of this invention exhibit improved physical and chemical properties when compared with cured coatings which do not contain the ester reaction product additive.Type: GrantFiled: April 19, 1995Date of Patent: October 28, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Albert Ilya Yezrielev, Vijay Swarup, Konstantinos R. Rigopoulos
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Patent number: 5681567Abstract: The present invention is directed to methods of preparing high purity polyalkylene oxide carboxylic acids. The methods include reacting a polyalkylene oxide such as polyethylene glycol with a t-butyl haloacetate in the presence of a base followed by treatment with an acid such as trifluoroacetic acid. The resultant polymer carboxylic acids are of sufficient purity so that expensive and time containing purification steps required for pharmaceutical grade polymers are avoided.Type: GrantFiled: August 13, 1996Date of Patent: October 28, 1997Assignee: Enzon, Inc.Inventors: Anthony J. Martinez, Richard B. Greenwald
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Patent number: 5679743Abstract: The disclosure describes a polyacetal resin composition comprising 100 parts by weight of a polyacetal resin (A), 0.3 to 10 parts by weight of an olefin copolymer (B) composed of 30 to 70 wt % of ethylene-propylene-diene rubber (B.sub.1), 30 to 70 wt % of an ethylene-vinyl acetate copolymer (B.sub.2) with a vinyl acetate content of 18 to 40 wt % and 1 to 25 wt % of an ethylene-(C.sub.4-6)olefin-1 copolymer (B.sub.3), and 0.1 to 10 parts by weight of a styrene-based thermoplastic elastomer (C) having a functional group.Type: GrantFiled: January 16, 1996Date of Patent: October 21, 1997Assignee: Oiles CorporationInventors: Kazuo Hirai, Kingo Miyasaka, Masayuki Rokugawa, Katsumi Minou
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Patent number: 5672662Abstract: Active esters of PEG acids and related polymers are provided that have a single propionic or butanoic acid moiety and no other ester linkages. These polymer acids have a half life in water of from about 10 to 25 minutes. For example, alpha-methoxy, omega-propionic acid succinimidyl ester of PEG ("methoxy-PEG-SPA") has a nearly ideal reactivity with amino groups on proteins and other biologically active substances. The half life of methoxy-PEG-SPA is about 16.5 minutes in water. The invention also provides conjugates with proteins, enzymes, polypeptides, drugs, dyes, nucleosides, oligonucleotides, lipids, phospholipids, liposomes, and surfaces of solid materials that are compatible with living organisms, tissue, or fluid.Type: GrantFiled: October 2, 1995Date of Patent: September 30, 1997Assignee: Shearwater Polymers, Inc.Inventors: J. Milton Harris, Antoni Kozlowski