Mixed With Carboxylic Acid Or Derivative Reactant Or Polymer Therefrom Patents (Class 525/411)
-
Publication number: 20080233169Abstract: N-substituted 4-aza-caprolactone biodegradable polymers, including derivatives thereof, useful for making implantable medical devices and coatings therefore are provided. The medical devices and coatings of the present invention can also be used for in situ controlled release drug delivery and are useful for treating or preventing medical conditions such as restenosis, aneurisms and vulnerable plaque.Type: ApplicationFiled: August 9, 2006Publication date: September 25, 2008Applicant: Medtronic Vasular, Inc.Inventors: Mingfei Chen, Peiwen Cheng, Kishore Udipi
-
Patent number: 7419703Abstract: The invention provides heat-curable thixotropic mixtures containing carbamate and/or allophanate groups, including at least one oligomer and/or polymer containing at least one of carbamate and allophanate groups, and at least one thixotropic agent that is a urea derivative preparable by reacting at least one amine and/or water with at least one isocyanate in the presence of at least one amino resin. The invention further provides processes for preparing the mixtures and coating materials, adhesives and sealing compounds prepared from the mixtures.Type: GrantFiled: August 26, 2005Date of Patent: September 2, 2008Assignee: BASF Coatings AGInventors: Hubert Baumgart, Michael A Gessner, Bruce Oermann, Paul J Harris
-
Publication number: 20080194770Abstract: Biodegradable aliphatic/aromatic copolyester comprising 49 to 66 mol % of an aromatic polyfunctional acid; 51 to 34 mol % of an aliphatic acid, at least 70% of which is sebacic acid; and butandiol; and blends containing such copolyester.Type: ApplicationFiled: March 17, 2006Publication date: August 14, 2008Applicant: Novamont S.p.A.Inventors: Catia Bastioli, Tiziana Milizia, Giovanni Floridi, Andrea Scaffidi Lallaro, Giandomenico Cella, Maurizio Tosin
-
Publication number: 20080125550Abstract: In a cured product having a thickness of 60 ?m obtained from an actinic energy ray-curable composition of the present invention, when a scratch mark is made at a vertical load of 235 mN using a diamond indenter with a tip diameter of 15 ?m, the scratch mark is repaired by a self-repairing ability under an atmosphere at 25° C. and at a relative humidity of 50%. Therefore, the actinic energy ray-curable composition is useful as coating agents or paints for products where scratch resistance is required.Type: ApplicationFiled: October 30, 2007Publication date: May 29, 2008Applicant: NATOCO CO., LTD.Inventors: Masahiro Hara, Tomihisa Ohno, Susumu Kawakami
-
Patent number: 7368511Abstract: This invention relates to a blend of biodegradable polymers comprising: (A) about 15% to about 60% by weight of at least one flexible biodegradable polymer (A) having a glass transition less than about 0° C., (B) about 85% to about 40% by weight of at least one rigid biodegradable polymer (B) having a glass transition greater than about 10° C.; said percentages being based on the total weight of the polymer blend; wherein said polymer blend has a unnotched Izod impact strength according to ASTM D256 of at least 9 ft-lbs/in at 23° C. In one embodiment, the polymer blend has a unnotched Izod impact strength according to ASTM D256 at least 20 ft-lbs/in at 23° C.Type: GrantFiled: December 6, 2004Date of Patent: May 6, 2008Assignee: Eastman Chemical CompanyInventors: Wesley Raymond Hale, Candace Michele Tanner
-
Publication number: 20080102649Abstract: There is provided an underlayer coating forming composition for lithography that is used in lithography process of the manufacture of semiconductor devices and that has a high dry etching rate in comparison to photoresists, does not intermix with photoresists, and is capable of flattening the surface of a semi conductor substrate having holes of a high aspect ratio. The underlayer coating forming composition for lithography comprises, a compound having two or more protected carboxylic groups, a compound having two or more epoxy groups, and a solvent.Type: ApplicationFiled: January 6, 2006Publication date: May 1, 2008Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Satoshi Takei, Tetsuya Shinjo, Keisuke Hashimoto, Yasushi Sakaida
-
Patent number: 7354531Abstract: A composition for use as a polymer electrolyte, wherein said composition includes one or more polar materials and one or more polyesters of formula III, wherein each unit A may be identical or different and is of the structure IV, wherein each unit B may be identical or different and is of the structure V, wherein R and R1 are each, independently, hydrogen, optionally substituted hydrocarbyl or an inert functional group; a process for preparing said composition; the use of said composition as a polymer electrolyte in coulometers, displays, smart windows, cells or batteries; and a cell and/or battery having said composition.Type: GrantFiled: July 31, 2001Date of Patent: April 8, 2008Assignee: Shell Oil CompanyInventors: Wynham Henry Boon, Thomas Clayton Forschner, David Eric Gwyn, James R. MacCallum, Christopher John Smith, Michael John Smith
-
Patent number: 7335699Abstract: A description is given of water-soluble aminoplast ether copolymers of the following structural type: wherein Z is a glycoluril central unit, B is a radical of an essentially water-insoluble polymer and R1 is a radical of a hydrophilic organic compound. The ratio R1:B is selected within a range of about 1.5 to 4:1 and the overall mass of the water-soluble aminoplast ether copolymer is from about 2000 to 50 000 g/mol such that the copolymer is soluble in water and may be used as a dispersant for e.g. pigments in polar solvents, e.g. water.Type: GrantFiled: December 17, 2002Date of Patent: February 26, 2008Assignee: Sud-Chemie AGInventors: Klaus Dziwok, Inge Krämer, Norbert Schall, Helmut Coutelle, Sabine Huth, Alan Steinmetz, Thadeus Schauer, Heinz Greisiger, Mark Entenmann
-
Patent number: 7288603Abstract: An object of the present invention is to obtain a novel polymeric material capable of forming a solid polymer electrolyte excellent not only in processability, solvent resistance and durability/stability but also in ion conductivity by introducing sulfonic acid group or phosphonic acid group into a polybenzazole compound having excellent properties in view of heat resistance, solvent resistance, mechanical characteristics and the like. Means attaining the object of the present invention is a polybenzazole compound including an aromatic dicarboxylic acid bond unit having sulfonic acid group and/or phosphonic acid group and satisfying either a condition that inherent viscosity measured in concentrated sulfuric acid is in the range of 0.25 to 10 dl/g or a condition that inherent viscosity measured in a methanesulfonic acid solution is in the range of 0.1 to 50 dl/g.Type: GrantFiled: November 12, 2001Date of Patent: October 30, 2007Assignee: Toyo Boseki Kabushiki KaishaInventors: Yoshimitsu Sakaguchi, Kota Kitamura, Hiroaki Taguchi, Junko Nakao, Shiro Hamamoto, Hiroshi Tachimori, Satoshi Takase
-
Patent number: 7279534Abstract: The present invention provides block copolymers containing at least one block of a poly(heteroaromatic) polymer and at least two blocks of a non-conjugated polymer. The chemically different blocks of the copolymer are covalently bonded to each other in an alternating fashion through an appropriate linkage group. The poly(heteroaromatic) block may exist in its neutral or oxidized form, and when in the oxidized form, it associates with organic or inorganic counter-anions to balance the charge. The poly(heteroaromatic) polymer is an intrinsically conducting polymer (ICP), and when in the oxidized form it is electrically conducting. When the ICP block or blocks of the block copolymer are in the doped form, the block copolymer is electrically conducting. Preferably the conducting block copolymers have conductivities in the range 10?6-103 S/cm. Block copolymers of this invention are soluble or dispersible in water, one or more organic solvents, or in a mixture thereof at a level of at least about 0.1 g/liter.Type: GrantFiled: September 3, 2002Date of Patent: October 9, 2007Assignee: TDA Research, Inc.Inventors: Silvia DeVito Luebben, Brian Elliott, Carolina Wilson
-
Patent number: 7273910Abstract: Process for the preparation of a functionalized polymer containing an additive, in which process there is formed a compound that contains, besides at least one blocked isocyanate group, a free amino, hydroxy or carboxy group; this compound is linked to an additive via the free amino, hydroxy or carboxy group in the additive; this additive linked to the compound mentioned is contacted with a polymer that contains at least one free amino or hydroxyl group, at a temperature above the polymer's melting point and at least above 150° C., such that the blocked isocyanate group reacts with the free amino or hydroxy group of the polymer to form the functionalized polymer. The invention also relates to the intermediate products formed in the process and in the preparation thereof. Lastly, the invention relates to functionalized polymers and polymer compositions containing the functionalized polymer.Type: GrantFiled: February 20, 2003Date of Patent: September 25, 2007Assignee: DSM IP Assets B.V.Inventors: Jacobus Antonius Loontjens, Bartholomeus Johannes Margretha Plum, Albert Arnold Van Geenen, Weihua Ming
-
Patent number: 7268205Abstract: Devices formed of or including biocompatible polyhydroxyalkanoates are provided with controlled degradation rates, preferably less than one year under physiological conditions. Preferred devices include sutures, suture fasteners, meniscus repair devices, rivets, tacks, staples, screws (including interference screws), bone plates and bone plating systems, surgical mesh, repair patches, slings, cardiovascular patches, orthopedic pins (including bone filling augmentation material), adhesion barriers, stents, guided tissue repair/regeneration devices, articular cartilage repair devices, nerve guides, tendon repair devices, atrial septal defect repair devices, pericardial patches, bulking and filling agents, vein valves, bone marrow scaffolds, meniscus regeneration devices, ligament and tendon grafts, ocular cell implants, spinal fusion cages, skin substitutes, dural substitutes, bone graft substitutes, bone dowels, wound dressings, and hemostats.Type: GrantFiled: January 16, 2007Date of Patent: September 11, 2007Assignee: Metabolix, Inc.Inventors: Simon F. Williams, David P. Martin, Frank A. Skraly
-
Patent number: 7268182Abstract: A coating composition comprising a film forming binder of a. at least one polymer that has pendant groups, such as, hydroxyl, carboxyl, glycidyl, amine, amide, silane and mixtures thereof that are reactive with a crosslinking component and the polymer has a glass transition temperature (Tg) of 10 to 80° C.; b. a polytrimethylene ether diol having a Mn (number average molecular weight) of 500 to 5,000; and c. a crosslinking component, such as, organic polyisocyanates, melamine formaldehydes, alkylated melamine formaldehydes, benzoquanamine formaldehyde, urea formaldehyde, polyepoxides, silane resin and any mixtures thereof; wherein the coating composition can be used as a clear coating composition and can contain pigments and may be used as a pigmented top coating, a pigmented base coating, a primer or primer surfacer coating and is useful for coating automobile and truck bodies and parts, industrial equipment, appliances and exterior structures.Type: GrantFiled: March 19, 2004Date of Patent: September 11, 2007Assignee: E. I. du Pont de Nemours & CompanyInventors: Hari Babu Sunkara, Patricia Mary Ellen Sormani, James William O'Neil, Joseph V. Kurian
-
Patent number: 7241832Abstract: Biodegradable polymer blends suitable for laminate coatings, wraps and other packaging materials are manufactured from at least one “hard” biopolymer and at least one “soft” biopolymer. “Hard” biopolymers tend to be more brittle and rigid and typically have a glass transition temperature greater than about 10° C. “Soft” biopolymers tend to be more flexible and pliable and typically have a glass transition temperature less than about 0° C. While hard and soft polymers each possess certain intrinsic benefits, certain blends of hard and soft polymers have been discovered which possess synergistic properties superior to those of either hard or soft polymers by themselves. Biodegradable polymers include polyesters, polyesteramides, polyesterurethanes, thermoplastic starch, and other natural polymers. The polymer blends may optionally include an inorganic filler. Films and sheets made from the polymer blends may be textured so as to increase the bulk hand feel.Type: GrantFiled: March 1, 2002Date of Patent: July 10, 2007Assignee: bio-tec Biologische Naturverpackungen GmbH & Co., KGInventors: Kishan Khemani, Harald Schmidt, Simon K. Hodson
-
Patent number: 7214414Abstract: Biodegradable polymer blends suitable for laminate coatings, wraps and other packaging materials are manufactured from a blend of suitable biodegradable polymers, such as at least one “hard” biopolymer and at least one “soft” biopolymer. “Hard” biopolymers tend to be more brittle and rigid and typically have a glass transition temperature greater than about 10° C. “Soft” biopolymers tend to be more flexible and pliable and typically have a glass transition temperature less than about 0° C. While hard and soft polymers each possess certain intrinsic benefits, certain blends of hard and soft polymers have been discovered which possess synergistic properties superior to those of either hard or soft polymers by themselves. Biodegradable polymers include polyesters, polyesteramides, polyesterurethanes, thermoplastic starch, and other natural polymers. The polymer blends may optionally include an inorganic filler. Films and sheets made from the polymer blends may be textured so as to increase the bulk hand feel.Type: GrantFiled: April 12, 2005Date of Patent: May 8, 2007Assignee: biotec Biologische Naturverpackungen GmbInventors: Kishan Khemani, Harald Schmidt, Simon Hodson
-
Patent number: 7179883Abstract: Devices formed of or including biocompatible polyhydroxyalkanoates are provided with controlled degradation rates, preferably less than one year under physiological conditions. Preferred devices include sutures, suture fasteners, meniscus repair devices, rivets, tacks, staples, screws (including interference screws), bone plates and bone plating systems, surgical mesh, repair patches, slings, cardiovascular patches, orthopedic pins (including bone filling augmentation material), adhesion barriers, stents, guided tissue repair/regeneration devices, articular cartilage repair devices, nerve guides, tendon repair devices, atrial septal defect repair devices, pericardial patches, bulking and filling agents, vein valves, bone marrow scaffolds, meniscus regeneration devices, ligament and tendon grafts, ocular cell implants, spinal fusion cages, skin substitutes, dural substitutes, bone graft substitutes, bone dowels, wound dressings, and hemostats.Type: GrantFiled: December 22, 2004Date of Patent: February 20, 2007Assignee: Metabolix, Inc.Inventors: Simon F. Williams, David P. Martin, Frank A. Skraly
-
Patent number: 7175917Abstract: The present invention provides a biaxially oriented film of a polylactic acid resin that is suitable for films for bags and packaging films for various windows, particularly films for outlook window envelopes. The film is biodegradable and, as films for outlook window envelopes, is superior in the coating adaptability for an antistatic agent, a lubricant and an antiblocking agent or the like and in the high-speed cutting property. The present invention discloses a biaxially oriented film of a polylactic acid resin comprising not less than 50% by weight of a polylactic acid resin, which has a storage modulus E?at 80° C. within the range from 10 MPa to 3,000 MPa, as determined by the test method for temperature dependency of dynamic viscoelasticity, in accordance with JIS K7198 (method A); a heat shrinkage of not higher than 10%, upon heating at 80° C. for 10 seconds; and a tear strength in the width direction (TD direction) of the film of 10 to 200 mN, as determined in accordance with JIS K7128 (method B).Type: GrantFiled: October 29, 2002Date of Patent: February 13, 2007Assignee: Asahi Kasei Life & Living CorporationInventors: Masayuki Sukigara, Mitsuyoshi Itada, Hisao Koike, Michihiro Yatsuzuka, Yoshiaki Hamada
-
Patent number: 7151142Abstract: The present invention is directed to a poly(ethylene glycol)-grafted aliphatic polyester represented by Formula 1: wherein X is an aliphatic ester, R is hydrogen or C1-5 alkyl, Z is the binding moiety of an initiator or a chain transfer agent, m/l is from 0.1 to 50, n is from 2 to 50, w is 1 or greater, and y is from 1 to 200. Further disclosed is a method for preparing the poly(ethylene glycol)-grafted aliphatic polyester of the present invention.Type: GrantFiled: June 25, 2004Date of Patent: December 19, 2006Assignee: Korea Advanced Institute of Science and TechnologyInventors: Jung Ki Park, Seong-Nam Lee, Shi-Joon Sung, Ki-Yun Cho
-
Patent number: 7148315Abstract: Monomer addition methodology is provided to adjust monomer addition rates to a polymerization reactor. Advantages of the invention include control of bioabsorbable copolymer structure, improvement of monomer conversion, control of reaction temperature, and reduced reaction time. The overall result is an improved process and enhanced product performance. The technology is particularly useful in the copolymerization of monomers with different reactivity ratios, such as glycolide/lactide copolymers and glycolide/caprolactone copolymers. Monomer reactivity ratios and reaction kinetics are utilized to adjust monomer addition rates.Type: GrantFiled: October 23, 2002Date of Patent: December 12, 2006Assignee: Ethicon, Inc.Inventors: Modesto Erneta, Terry E. Lawler
-
Patent number: 7144976Abstract: The present invention includes photocurable, liquid polymers incorporating coumarin ester endgroups into their molecular structure, which polymers are crosslinked upon irradiation with ultraviolet light by photochemically allowed [2+2] cycloaddition reactions among the chain ends, and which crosslinked polymers are useful in the preparation of medical devices, tissue engineering scaffolds, drug delivery systems and, in particular, in vivo preparation of implants in an open surgical procedure or laproscopically.Type: GrantFiled: May 8, 2002Date of Patent: December 5, 2006Assignee: Ethicon, Inc.Inventors: Takehisa Matsuda, Manabu Mizutani, Steven Arnold
-
Patent number: 7141643Abstract: A block copolymer is disclosed, which comprises a first block comprising polymerized units of an alkylene oxide and a second block comprising polymerized units of an alkylene oxide and a lactone, said copolymer being obtainable by polymerizing an alkylene oxide in the presence of an organic initiator to form said first block, and reacting the first block with a mixture of an alkylene oxide and a lactone. Such copolymers are found to have improved foam inhibition characteristics while maintaining their biodegradable properties.Type: GrantFiled: November 28, 2001Date of Patent: November 28, 2006Assignee: Cognis Performance Chemicals UK Ltd.Inventors: Elizabeth Dixon, John Robert Moxey
-
Patent number: 7138464Abstract: Absorbable heterochain polymers carrying acid or basic groups, capable of ionic conjugation with basic or acidic bioactive agents, respectively, are produced by free-radical addition of unsaturated functional monomers onto absorbable liquid polymers and subsequent generation of reactive functionality or by direct copolymerization of a carboxylic initiator with cyclic monomers to produce liquid carboxyl-bearing copolyesters or polyester carbonates.Type: GrantFiled: October 24, 2003Date of Patent: November 21, 2006Assignee: Poly Med, IncInventor: Shalaby W. Shalaby
-
Patent number: 7129319Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.Type: GrantFiled: July 30, 2003Date of Patent: October 31, 2006Assignee: Poly Med Inc.Inventor: Shalaby W. Shalaby
-
Patent number: 7105629Abstract: The present invention includes photocurable, liquid polymers incorporating coumarin ester endgroups into their molecular structure, which polymers are crosslinked upon irradiation with ultraviolet light by photochemically allowed [2+2] cycloaddition reactions among the chain ends, and which crosslinked polymers are useful in the preparation of medical devices, tissue engineering scaffolds, drug delivery systems and, in particular, in vivo preparation of implants in an open surgical procedure or laproscopically.Type: GrantFiled: May 8, 2002Date of Patent: September 12, 2006Inventors: Takehisa Matsuda, Manabu Mizutani, Steven Arnold
-
Patent number: 7094864Abstract: The present invention uses a reactor that combines devices having a special portion structure to solve the difficulty of uniform blending due to the reactants becoming highly viscous, the difficulty of heat removal, and the increase in pressure loss, thus leading to continuous production of a polyester-based polymer stably having excellent quality.Type: GrantFiled: January 8, 2003Date of Patent: August 22, 2006Assignee: Daicel Chemical Industries, Ltd.Inventor: Jun Watanabe
-
Patent number: 7074883Abstract: Copolymers of lactide and glycolide with high glycolide content. The average glycolate block length is less then about 3, which allows the copolymer to be soluble in slightly polar solvents such as methylene chloride.Type: GrantFiled: December 1, 2003Date of Patent: July 11, 2006Assignee: Alkermes Controlled Therapeutics, Inc. IIInventor: Chiem V. Pham
-
Patent number: 7071288Abstract: The present invention is generally directed to a process for producing lactide-based polymers and the polymers produced by this process. The polymers of the present invention are terpolymers formed by the copolymerization of a lactide monomer, a linking monomer and an epoxy-terminated monomer. In one embodiment of the invention, the polymers may be formed from fluorine-containing monomers or aromatic ring-containing monomers. The disclosed materials may display improved hydrolytic and thermal characteristics as compared to previously known lactide-based materials. For example, the lactide based terpolymers may have a glass transition temperature over 60° C. For instance, lactide-based thermoplastic terpolymers of the present invention can have a glass transition temperatures of about 80° C. or higher. Lactide-based thermoset networks of the invention can have glass transition temperatures of up to about 200° C.Type: GrantFiled: April 7, 2004Date of Patent: July 4, 2006Assignee: Clemson UniversityInventors: Dennis W. Smith, Nilmini Abayasinghe
-
Patent number: 7070858Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.Type: GrantFiled: July 30, 2003Date of Patent: July 4, 2006Assignee: Poly Med IncInventors: Shalaby W. Shalaby, Torbjorn Mathisen
-
Patent number: 7067596Abstract: The invention relates to a mixture of biodegradable polyesters which includes an aromatic-aliphatic polyester (A), an aliphatic polyester (B) and a polylactic acid polymer (C) in which the concentration of A varies, with respect to (A+B) in the range between 40 and 70% by weight, and the concentration of C with respect of (A+B+C) is of between 6 and 30% by weight.Type: GrantFiled: January 25, 2002Date of Patent: June 27, 2006Assignee: Novamont S.p.AInventors: Catia Bastioli, Gianfranco Del Tredici, Italo Guanella, Tiziana Milizia, Roberto Ponti
-
Patent number: 7041417Abstract: This invention relates to an image receiving layer (22) of a receiver element (20) for laser-induced thermal transfer imaging processes. The image receiving layer (22) is made from a formulation containing a caprolactone polymer and a cellulose ester. The invention is, typically, useful in proofing and color filter applications.Type: GrantFiled: May 9, 2003Date of Patent: May 9, 2006Assignee: E. I. du Pont de Nemours and CompanyInventor: Harvey Walter Taylor, Jr.
-
Patent number: 7026437Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.Type: GrantFiled: July 30, 2003Date of Patent: April 11, 2006Assignee: Poly-Med, INCInventors: Shalaby W. Shalaby, Dan Åkerfeldt, Fredrik Preiniz, Per Egnelöv, Torbjörn Mathisen
-
Patent number: 7019106Abstract: A process for producing a lactic acid polymer of 15,000 to 50,000 in weight-average molecular weight, the content of polymeric materials having not more than about 5,000 in weight-average molecular weight therein being not more than about 5% by weight, characterized by hydrolyzing a high molecular weight lactic acid polymer, placing the resultant solution comprising the hydrolyzed product under a condition capable of precipitating the objective lactic acid polymer, separating the precipitated lactic acid polymer and collecting them. The lactic acid polymer is useful as a matrix for sustained-release preparations. The sustained-release microcapsule preparation encapsulating a physiologically active substance can fully prevent the initial excessive release of the physiologically active substance from the microcapsules and keep a stable release rate over a long period of time.Type: GrantFiled: August 6, 2001Date of Patent: March 28, 2006Assignees: Wako Pure Chemical Industries, Ltd., Takeda Pharmaceutical Company LimitedInventors: Kohei Yamamoto, Tsutomu Tani, Takashi Aoki, Yoshio Hata
-
Patent number: 6911522Abstract: Compositions based on ?-caprolactone polymer, comprising at least one ?-caprolactone polymer and calcium carbonate. Process for preparing these compositions, which are used for manufacturing articles, in particular films, preferably obtained by extrusion blow-moulding or by flat-die extrusion.Type: GrantFiled: January 19, 2001Date of Patent: June 28, 2005Assignee: SOLVAY (Societe Anonyme)Inventors: Dino Manfredi, Ivan Claeys
-
Patent number: 6905987Abstract: Environmentally degradable melt spun fibers comprising a polyhydroxyalkanoate copolymer and a polylactic acid polymer or copolymer are disclosed. A preferred configuration of the present invention is directed to environmentally degradable fibers comprising a sheath/core structure where the core comprises a biodegradable polyhydroxyalkanoate copolymer and the sheath comprises a polymer or copolymer of polylactic acid. Nonwoven webs and disposable articles comprising the environmentally degradable fibers are also disclosed.Type: GrantFiled: January 17, 2002Date of Patent: June 14, 2005Assignee: The Procter & Gamble CompanyInventors: Isao Noda, Eric Bryan Bond, David Harry Melik
-
Patent number: 6906148Abstract: The present invention relates to compositions comprising reaction products of a polyisocyanate with a polyester block copolymer and a process for the preparation thereof. These are suitable as a moisture-curing hot melt adhesive. The hot melt adhesive composition may optionally also comprise a reaction product of a polyisocyanate with a polyester polyol and/or a reaction product of a polyisocyanate with a polyether polyol. Such polyurethane hot melt adhesive compositions have good creep resistance and interfacial adhesion values on plastics and show very high strength values.Type: GrantFiled: May 30, 2001Date of Patent: June 14, 2005Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Michael Krebs, Christoph Lohr, Andreas Brenger, Ingolf Scheffler
-
Patent number: 6903151Abstract: A wet-stick pressure-sensitive adhesive is provided wherein the pressure-sensitive adhesive comprises: at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester monomer, wherein the (meth)acrylic acid ester monomer, when homopolymerized, has a Tg of less than about 10° C.; at least one copolymerized hydrophilic acidic comonomer; and at least one nonreactive copolymer comprising at least two copolymerized alkylene oxides, at least one of which is hydrophobic and at least one of which is hydrophilic.Type: GrantFiled: February 6, 2003Date of Patent: June 7, 2005Assignee: 3M Innovative Properties CompanyInventors: Donald H. Lucast, Dong-Wei Zhu
-
Patent number: 6861479Abstract: Production of a porous layer includes using a composition which includes a first polymer component and a second polymer component, the first polymer component being polyhydroxyamide and/or polybenzoxazole and stable at a temperature at which the second polymer component decomposes and volatilizes. If the composition is heated to the decomposition temperature of the second polymer component, the second component volatilizes and a porous layer that contains the first component remains.Type: GrantFiled: June 26, 2002Date of Patent: March 1, 2005Assignee: Infineon Technologies AGInventor: Recai Sezi
-
Patent number: 6831149Abstract: The present invention is directed to a process for making an absorbable polylactone copolymer prepared in part from about 2 to about 80 mole percent glycolide, which process utilizes a combination of a monofunctional polymerization initiator and a di-functional polymerization initiator, to achieve rates of crystallization of the copolymer of at least about 2 times faster than the rate of crystallization of a copolymer made by a similar process utilizing either the mono-functional or the di-functional polymerization initiator alone. Absorbable polylactone copolymers prepared by such processes and medical devices containing such copolymers are also disclosed.Type: GrantFiled: June 28, 2002Date of Patent: December 14, 2004Assignee: Ethicon, Inc.Inventors: Hugh D. Newman, Jr., Sasa Andjelic, Brian M. Kelly, Dennis D. Jamiolkowski, Rao S. Bezwada
-
Patent number: 6830747Abstract: Biocompatible biodegradable polymer or copolymer is capped at one end and has free hydroxyl at the other end. The free hydroxyl can be reacted to link a plurality of functional groups some or each of which can be reacted to attach directly or via a spacer molecule a moiety containing an aminoxyl-containing radical or to a moiety comprising other drug molecule residue or a moiety comprising other biologically active agent residue.Type: GrantFiled: March 20, 2002Date of Patent: December 14, 2004Assignee: Cornell Research Foundation, Inc.Inventors: Meidong Lang, Chih-Chang Chu
-
Patent number: 6828412Abstract: A polymer comprising: a polymeric backbone comprising at least one unit having the structure (I), wherein R-R4 comprise groups selected from the group consisting of H, C1-C12 alkyl, C6-C18 aryl, C7-C18 aralkyl, C6-C18 cycloalkyl or any of the group consisting of C1-C12 alkyl, C6-C18 aryl, C7-C18 aralkyl, C6-C18 cycloalkyl substituted, within the carbon chain or appended thereto, with one or more heteroatoms; R and R2 or R and R4 or R and R1 or R2 and R3 may be joined so that with the carbon atom(s) to which they are attached they together form a saturated, partially unsaturated or unsaturated ring system respectively, may have a pendent group which may incorporate a linker unit, (for example a peptide linkage) or a unit having the structure (I); A comprises a proton donating moiety selected from the group consisting of formula (1).Type: GrantFiled: July 19, 2002Date of Patent: December 7, 2004Assignee: School of Pharmacy, University of LondonInventors: Stephen James Brocchini, Marie-Claude Dubois Clochard
-
Patent number: 6828355Abstract: This invention relates to resin-reinforced silicone compositions curable upon exposure to radiation in the electromagnetic spectrum, which compositions when cured demonstrate improved elastomeric properties, such as tensile strength, modulus and elongation. The inventive resin-reinforced silicone compositions may alternatively be rendered curable by exposure to moisture. In addition, the inventive composition may be rendered curable by exposure to radiation in the electromagnetic spectrum, and exposure to moisture. The inventive silicone compositions are particularly well suited for use in electronic conformal coating and potting applications, as well as in automotive gasketing applications, pressure sensitive adhesive applications and the like.Type: GrantFiled: January 18, 2002Date of Patent: December 7, 2004Assignee: Henkel CorporationInventor: Hsien-Kun Chu
-
Patent number: 6825314Abstract: The object of the present invention is to provide a novel method for effectively producing a cyclic lactic acid oligomer, and a cyclic lactic acid oligomer produced by the method.Type: GrantFiled: June 25, 2002Date of Patent: November 30, 2004Assignee: Amato Pharmaceutical Products, Ltd.Inventors: Mikio Watanabe, Jiro Takano, Yoshimi Ishihara, Masahiro Murakami
-
Patent number: 6797788Abstract: The invention concerns thermoplastic aliphatic polyester compositions characterized by a melt flow index (RMFI) ranging between 1.1 and 2.5. The invention also concerns a method for preparing said compositions which are used for making films, foams, flasks or thermoformed products. The resulting films obtained from said compositions are used for making litter bags, films for agricultural use, packaging films, shrouds, diaper drawers and adhesive films.Type: GrantFiled: April 30, 2002Date of Patent: September 28, 2004Assignee: SOLVAY (Societe Anonyme)Inventors: Ivan Claeys, Henri Wautier, Dino Manfredi
-
Patent number: 6794485Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.Type: GrantFiled: October 31, 2002Date of Patent: September 21, 2004Assignee: Poly-Med, Inc.Inventors: Shalaby W. Shalaby, Torbjorn Mathisen
-
Patent number: 6794484Abstract: The present invention is directed to absorbable polylactone copolymers prepared in part from about 2 to about 80 mole percent glycolide, utilizing a combination of a monofunctional polymerization initiator and a di-functional polymerization initiator, to achieve rates of crystallization of the copolymer of at least about 2 times faster than the rate of crystallization of a copolymer made by a similar process utilizing either the mono-functional or the di-functional polymerization initiator alone. Medical devices containing such copolymers are also disclosed.Type: GrantFiled: June 28, 2002Date of Patent: September 21, 2004Assignee: Ethicon, Inc.Inventors: Hugh D. Newman, Jr., Sasa Andjelic, Brian M. Kelly, Dennis D. Jamiolkowski, Rao S. Bezwada
-
Patent number: 6794462Abstract: A composition comprises a solid-stated block copolymer of an aromatic polyester and a caprolactone, wherein the copolymer has been solid state polymerized such that intrinsic viscosity increases at least 20%, the caprolactone content decreases no more than 1.2% absolute and the transesterification increases no more than 3.5% absolute, and wherein the solid-stated copolymer has an intrinsic viscosity of at least 0.82. Particularly preferred chain extension reactions are performed at a temperature of less than 175° C., and even more preferably at less than 165° C. In further aspects of the inventive subject matter, yarns and methods of producing a fiber include contemplated solid-stated block copolymers.Type: GrantFiled: October 8, 2002Date of Patent: September 21, 2004Assignee: Honeywell International Inc.Inventors: Srinivasan Sridharan, John Armstrong Young, Donald James Arthur, Thomas Yiu-Tai Tam
-
Patent number: 6787613Abstract: The invention relates to a mixture of biodegradable polyesters which includes an aromatic-aliphatic polyester (A), an aliphatic polyester (B) and a polyactic acid polymer (C) in which the concentration of A varies, with respect to (A+B) in the range between 40 and 70% by weight, and the concentration of C with respect to (A+B+C) is of between 6 and 30% by weight.Type: GrantFiled: January 25, 2002Date of Patent: September 7, 2004Assignee: Novamont S.p.A.Inventors: Catia Bastioli, Gianfranco Del Tredici, Italo Guanella, Roberto Ponti
-
Patent number: 6774206Abstract: The present invention relates to polyaspartates corresponding to the formula wherein X1 represents the residue obtained by removing the amino groups from a polyether polyamine having a functionality of n and a number average molecular weight of less than 600, wherein the amino groups are attached to primary carbon atoms and the ether groups are separated by at least two carbon atoms, R1 and R2 are identical or different and represent organic groups which are inert to isocyanate groups at a temperature of 100° C. or less, R3 and R4 are identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100° C. or less and n is 2 to 4. The present invention also relates to polyureas prepared by reacting the polyaspartates and optionally other isocyanate-reactive compounds with polyisocyanates.Type: GrantFiled: September 26, 2002Date of Patent: August 10, 2004Assignees: Bayer Polymers LLC, Bayer AktiengesellschaftInventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell D. Wayt, Edward P. Squiller
-
Patent number: 6774207Abstract: The present invention relates to polyaspartate mixtures containing a) 5 to 70 equiv. %, based on the total equivalents of aspartate groups, of a cyclic polyaspartate corresponding to the formula wherein X1 represents the residue obtained by removing the amino groups from a cyclic polyamine having a functionality of n, R1 and R2 are identical or different and represent organic groups which are inert to isocyanate groups at a temperature of 100° C. or less, R3 and R4 are identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100° C. or less and n is 2 to 4, and b) 30 to 95 equiv.Type: GrantFiled: September 26, 2002Date of Patent: August 10, 2004Assignees: Bayer Polymers LLC, Bayer AktiengesellschaftInventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell Dean Wayt, Edward P. Squiller, Richard R. Roesler
-
Patent number: 6770717Abstract: Disclosed is a sequentially ordered biodegradable lactide (or glycolide or lactide/glycolide)/&egr;-caprolactone multi-block copolymers having proper degradation properties and enhanced mechanical properties such as flexibility and elasticity and a process for the preparation thereof.Type: GrantFiled: November 14, 2002Date of Patent: August 3, 2004Assignee: Korea Institute of Science and TechnologyInventors: Young Ha Kim, Soo Hyun Kim, Soo-Hong Lee, Oju Jeon