Solid Polymer Derived From Hetero-o-cyclic Compounds As Sole Reactants Wherein At Least One Reactant Contains A Hetero-o-ring Other Than Solely As A 1,2-epoxy Or Anhydride, And Wherein None Of The Reactants Contains A Plurality Of Methylol Groups Or Derivatives Thereof Patents (Class 525/410)
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Patent number: 8278397Abstract: Disclosed are a medical instrument and a medical material each comprising an aliphatic polyester resin composition, which are hardly reduced in strength and impact resistance upon the sterilization by ionizing radiation or have excellent shape-retaining properties after a heat treatment. Specifically, a medical instrument and a medical material both sterilized by ionizing radiation are provided, each of which contains a biodegradable resin and a polycarbodiimide compound in an amount of 0.1 to 10% by weight on the resin. The biodegradable resin is polybutylene succinate, a copolymer of polybutylene succinate, or a mixture of polybutylene succinate and a copolymer of polybutylene succinate with polylactic acid or poly(3-hydroxyalkanoate). A method of producing such medical instrument and medical material is also provided.Type: GrantFiled: March 23, 2009Date of Patent: October 2, 2012Assignee: Terumo Kabushiki KaishaInventor: Hiromasa Kohama
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Patent number: 8268913Abstract: A film comprising a polylactic acid and polypropylene blend having a haze of from about 10% to about 95% and a gloss 45° of from about 50 to about 125. A method of producing an oriented film comprising blending polypropylene and polylactic acid to form a polymeric blend, forming the polymeric blend into a film, and orienting the film. A method of producing an injection molded article comprising blending polypropylene and polylactic acid to form a polymeric blend, injecting the polymeric blend into a mold, and forming the article.Type: GrantFiled: June 30, 2008Date of Patent: September 18, 2012Assignee: Fina Technology, Inc.Inventors: Fengkui Li, Tim J. Coffy, Michel Daumerie
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Patent number: 8263704Abstract: Bioabsorbable macromer compositions are provided including a polymeric component possessing a lipid segment which enhances the affinity of the macromer composition to targeted tissue. In some embodiments, the polymeric component can be combined with a second component. The resulting bioabsorbable macromer composition can be employed as an adhesive or sealant for medical/surgical uses.Type: GrantFiled: March 24, 2009Date of Patent: September 11, 2012Assignee: Tyco Healthcare Group LPInventors: Joshua B. Stopek, Ahmad Robert Hadba
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Patent number: 8263715Abstract: A block copolymer includes a hydrophobic block and a hydrophilic block, wherein the hydrophobic block and the hydrophilic block include repeating units derived from ring opening polymerization of one or more cyclic carbonate monomers. The one or more cyclic carbonate monomers are independently selected from compounds of the general formula (II): wherein each Q? and Qa group independently represents a hydrogen, an alkyl group, a halide, a carboxy group, an ester group, an amide group, an aryl group, an alkoxy group, or a foregoing Q? or Qa group substituted with a carboxy group or an ester group, at least one Q? and Qa group includes an ester group; each Y independently represents O, S, NH, or NQ?; n is an integer from 0 to 6, wherein when n is 0, carbons labeled 4 and 6 are linked together by a single bond; each Q? group independently represents an alkyl group, an aryl group, or a foregoing Q? group substituted with a carboxy group, or an ester group.Type: GrantFiled: August 28, 2009Date of Patent: September 11, 2012Assignees: International Business Machines Corporation, The Board of Trustees of the Leland Stanford Junior UniversityInventors: Kazuki Fukushima, James L. Hedrick, Sung-Ho Kim, Robert M. Waymouth
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Patent number: 8236904Abstract: A bimodal bioabsorbable polymer composition. The composition includes a first amount of a bioabsorbable polymer polymerized so as to have a first molecular weight distribution; a second amount of said bioabsorbable polymer polymerized so as to have a second molecular weight distribution having a weight average molecular weight between about 10,000 to about 50,000 Daltons, the weight average molecular weight ratio of said first molecular weight distribution to said second molecular weight distribution is at least about two to one; wherein a substantially homogeneous blend of said first and second amounts of said bioabsorbable polymer is formed in a ratio of between about 50/50 to about 95/5 weight/weight percent. Also disclosed are a medical device, a method of making a medical device and a method of melt blowing a semi-crystalline polymer blend.Type: GrantFiled: April 22, 2008Date of Patent: August 7, 2012Assignee: Ethicon, Inc.Inventors: Sasa Andjelic, Benjamin D. Fitz, Jianguo Jack Zhou
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Patent number: 8231950Abstract: The present invention relates to a block copolymer derived from at least one tetrahydrofuran monomer containing 14C. The present invention also relates to a method for preparing such a block copolymer.Type: GrantFiled: October 6, 2009Date of Patent: July 31, 2012Assignee: Arkema FranceInventors: Frederic Malet, Guillaume Le, Julien Jouanneau
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Patent number: 8232354Abstract: The present invention provides the method for producing a polylactic acid resin composition, including steps (1) and (2) step (1): adding the polycarbodiimide cross-linking agent to the polylactic acid resin to cross-link the polylactic acid resin; and step (2): mixing the cross-linked polylactic acid resin prepared in the step (1) with the uncross-linked polylactic acid resin.Type: GrantFiled: April 27, 2009Date of Patent: July 31, 2012Assignee: KAO CorporationInventors: Hiroaki Kishimoto, Akira Takenaka
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Publication number: 20120172537Abstract: To provide a process for producing a polyether, which comprises subjecting an alkylene oxide and the like to ring-opening addition polymerization to an initiator in the presence of a double metal cyanide complex catalyst (DMC catalyst), which can be carried out by use of a DMC catalyst at a low concentration, and accordingly the amount of the DMC catalyst remaining in a polyether to be obtained can be reduced. A process for producing a polyether, which comprises subjecting an alkylene oxide and an oxygen-containing heterocyclic compound other than an alkylene oxide, to ring-opening addition polymerization to an initiator having a hydroxy group in the presence of a DMC catalyst, wherein prior to the ring-opening addition polymerization, the DMC catalyst and the initiator are subjected to mixing treatment at a temperature of from 125° C. to 180° C. under an absolute pressure of at most 0.06 MPa for from 10 minutes to 24 hours.Type: ApplicationFiled: March 13, 2012Publication date: July 5, 2012Applicant: Asahi Glass Company, LimitedInventors: Takeaki ARAI, Chitoshi Suzuki
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Patent number: 8211986Abstract: It is an object of the present invention to provide a method for producing a polylactic acid block copolymer having high molecular weight, and in lower cost, wherein only a stereo-complex crystal is capable of growing, even when heat melting process is repeated. The present invention relates to a method for producing a polylactic acid block copolymer characterized in that (i) ring-opening polymerization of D-lactide (D component) is carried out in the presence of poly-L-lactic acid (L component), or (ii) ring-opening polymerization of L-lactide (L component) is carried out in the presence of poly-D-lactic acid (D component), and mass ratio of the D component and the L component is the D component/the L component=60/40 to 91/9, or the L component/the D component=60/40 to 91/9.Type: GrantFiled: August 10, 2007Date of Patent: July 3, 2012Assignees: Musashino Chemical Laboratory, Ltd., Mutual CorporationInventors: Yuka Komazawa, Zhen Tang
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Publication number: 20120136123Abstract: The present disclosure provides copolymers of 2-substituted-2-oxazolines possessing two or three reactive functional groups which are also chemically orthogonal. The copolymers described may be random copolymers, block copolymers or a mixture of random and block copolymer configurations. Furthermore, the present disclosure provides novel methods for synthesizing the above polymers and for conjugating to molecules such as targeting, diagnostic and therapeutic agents.Type: ApplicationFiled: February 6, 2012Publication date: May 31, 2012Applicant: Serina Therapeutics, Inc.Inventors: J. Milton Harris, Michael David Bentley, Kunsang Yoon
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Patent number: 8188185Abstract: A biodegradable packaging film is provided. The film is formed from a blend that contains a thermoplastic starch and polylactic acid. Starch is a relatively inexpensive natural polymer that is also renewable and biodegradable. Polylactic acid is likewise an inexpensive synthetic polymer that is biodegradable and renewable, yet also capable of providing increased tensile strength to the film. Although providing a good combination of biodegradability/renewability and increased tensile strength, the polylactic acid is also relatively rigid and can result in films having a relatively high stiffness (e.g., high modulus of elasticity) and low ductility. While more ductile than polylactic acid, the thermoplastic starch is often difficult to melt process in film forming processes and very sensitive to moisture and water vapor, reducing its ability to be used as a stand alone packaging film.Type: GrantFiled: June 30, 2008Date of Patent: May 29, 2012Assignee: Kimberly-Clark Worldwide, Inc.Inventors: James H. Wang, Sara A. Funk
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Patent number: 8182734Abstract: Disclosed are poly(hydroxyalkanoic acid) resin compositions comprising poly(hydroxyalkanoic acid), such as polylactic acid, and a polyoxymethylene. Also disclosed are articles such as films, sheets and thermoformed containers comprising the compositions.Type: GrantFiled: June 11, 2009Date of Patent: May 22, 2012Assignee: E. I. du Pont de Nemours and CompanyInventor: Julius Uradnisheck
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Publication number: 20120123055Abstract: The present disclosure provides copolymers of 2-substituted-2-oxazolines possessing two or three reactive functional groups which are also chemically orthogonal. The copolymers described may be random copolymers, block copolymers or a mixture of random and block copolymer configurations. Furthermore, the present disclosure provides novel methods for synthesizing the above polymers and for conjugating to molecules such as targeting, diagnostic and therapeutic agents.Type: ApplicationFiled: January 23, 2012Publication date: May 17, 2012Applicant: Serina Therapeutics, Inc.Inventors: Kunsang Yoon, Michael David Bentley, J. Milton Harris, Zhihao Fang, Tacey Viegas
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Patent number: 8178629Abstract: Described are conjugated polymer fibers and nanofibers, methods of making, and methods of use thereof. The conjugated polymer fibers and nanofibers can be prepared by an electrostatic spinning process followed by crosslinking.Type: GrantFiled: January 31, 2006Date of Patent: May 15, 2012Assignee: University of ConnecticutInventors: Gregory A. Sotzing, Patrick T. Mather
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Patent number: 8178628Abstract: The present invention relates to an aliphatic polyester resin composition having excellent hydrolysis resistance, added to an aliphatic polyester resin (A), a reactive monomer (B) (e.g. a monocarbodiimide compound) and a reactive polymer (C) (e.g. a polycarbodiimide compound).Type: GrantFiled: June 4, 2007Date of Patent: May 15, 2012Assignee: NEC CorporationInventors: Shukichi Tanaka, Yukihiro Kiuchi, Masatoshi Iji
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Patent number: 8173752Abstract: The present invention pertains to a polymer composition comprising one of poly-D-lactide and poly-L-lactide bonded to an anionic clay mineral and the other of poly-D-lactide and poly-L-lactide not bonded to the anionic clay mineral. In a preferred embodiment, the anionic clay mineral is a hydrotalcite or a meixnerite. The polylactide composition according to the invention combines a high polymerisation rate with a low amount of contaminants in the system.Type: GrantFiled: April 21, 2009Date of Patent: May 8, 2012Assignee: Purac Biochem B.V.Inventor: Siebe Comelis De Vos
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Patent number: 8173753Abstract: A method for producing an aliphatic polyester resin including a melt polymerization step and a subsequent solid phase polymerization step, using a sulfonic acid group-containing compound as a catalyst, wherein the addition amount of the sulfonic acid group-containing compound during melt polymerization is 300 to 3000 ppm with respect to a raw material monomer calculated as sulfur atoms, the content of the sulfonic acid group-containing compound during melt polymerization is 300 to 3000 ppm with respect to a produced polymer calculated as sulfer atoms, and a residual rate of the sulfonic acid group-containing compound after solid phase at polymerization is more than 50.Type: GrantFiled: May 19, 2009Date of Patent: May 8, 2012Assignee: Toray Industries, Inc.Inventors: Tatsuya Nagano, Tomoko Nasuno, Hiroyuki Ome, Yong He, Bo Yu, Kexin Zhu, Xiao Guo, Pujing Zuo
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Patent number: 8167992Abstract: A composition comprising a particulate Solid, an organic medium and a compound with an alkyleneoxy compound with an inorganic acidic polar head group (Z), wherein the compound is defined by Formula (1) and salts thereof: U—(Y)x-T-N(G)r(B—Z)q (Formula 1) wherein U is independently R?—N—(C)-T?-O—, or R—O—; R or R? may be the same or different and are independently H or C1-50-optionally substituted hydrocarbyl, or hydrocarbonyl group (acyl group), or the residue of an epoxide, or the residue of an optionally substituted (meth) acrylic ester or amide group; Y is C2-4-alkyleneoxy; T or T? is independently C2-4 alkylene; B is an alkylene group, such as, methylene; Z is an inorganic acidic polar head group, such as, a sulphur or phosphorus acidic polar head group; G and G? may be the same or different and are independently H or C1-50-optionally substituted hydrocarbyl or C1-50-optionally substituted hydrocarbyl or hydrocarbonyl group or the residue of an epoxide, or the residue of an optionally substituted (meth) acType: GrantFiled: December 14, 2006Date of Patent: May 1, 2012Assignee: Lubrizol LimitedInventors: Dean Thetford, Patrick J. Sunderland, Neil L. Simpson
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Patent number: 8163849Abstract: It is an object of the present invention to produce a polylactic acid having a high molecular weight such as a weight average molecular weight (Mw) of more than 100,000 from which only a stereocomplex crystal is grown even by repeating melting and crystallization. The present invention is a process of producing a polylactic acid, including the steps of: (i) obtaining a solid by kneading together poly(L-lactic acid) and poly(D-lactic acid) at a temperature of 160 to 225° C. and crystallizing the kneaded product; and (ii) melt kneading the obtained solid.Type: GrantFiled: February 6, 2008Date of Patent: April 24, 2012Assignee: Teijin LimitedInventors: Kiyotsuna Toyohara, Midori Ikegame, Hideki Yamane, Yoshiharu Kimura, Daisuke Masaki, Shin To
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Patent number: 8158729Abstract: [PROBLEMS] To provide a material for producing a bioabsorbable material in which it is easy to remove a metal zinc catalyst from a bioabsorbable polymer such as a polymer of lactide or a polymer of lactide and caprolactone and it is easy to recycle the removed powdery metal zinc catalyst, and to provide a bioabsorbable material produced from the material for producing a bioabsorbable material. [MEANS FOR SOLVING PROBLEMS] A material for producing a bioabsorbable material including a three-dimensionally shaped metal zinc polymerization catalyst and a bioabsorbable polymer such as a polymer of lactide or a polymer of lactide and caprolactone; and a process for producing a material for producing a bioabsorbable material, characterized in that in the process for producing a bioabsorbable polymer by polymerization, a three-dimensionally shaped metal zinc catalyst is used as a polymerization catalyst.Type: GrantFiled: March 14, 2007Date of Patent: April 17, 2012Assignee: JMS Co., Ltd.Inventors: Junichi Ide, Koichiro Toyota
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Patent number: 8138301Abstract: In accordance with the present invention, there is provided a method of preparing higher generation 1?3 C-branched polyamide dendrons. The combination of commercially available acryloyl chloride with 1?3 C-branched amines, e.g., di-tert-butyl 4-[2-(tert-butoxycarbonyl)ethyl]-4-aminoheptanedioate, resulted in generally high yields of acryl amides, which upon treatment with other reagents, generated the desired higher generation dendrons. These second and third generation dendrons were fully characterized and compared to the samples prepared from a convergent synthesis.Type: GrantFiled: November 11, 2005Date of Patent: March 20, 2012Assignee: The University of AkronInventors: George R. Newkome, Charles N. Moorefield, Kishore K. Kotta
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Patent number: 8138298Abstract: The object of the present invention is to provide a golf ball having excellent scuff resistance and spin performance. The present invention provides a golf ball which comprises a core and a cover covering the core. The cover contains a polyurethane as a resin component, and the polyurethane is obtained by employing a multimodal polyol having multimodality in molecular weight distribution, as a high-molecular-weight polyol component constituting the polyurethane.Type: GrantFiled: May 22, 2009Date of Patent: March 20, 2012Assignee: SRI Sports LimitedInventors: Kazuyoshi Shiga, Takashi Sasaki, Mikio Yamada
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Patent number: 8133943Abstract: Disclosed is a polylactic acid/polycarbonate resin composition including (A) about 100 parts by weight of a mixed resin including: (a1)) about 10 to about 90 wt % of a polycarbonate resin and (a2) about 10 to about 90 wt % of a polylactic acid resin; (B) about 1 to about 50 parts by weight of a flame retardant based on about 100 parts by weight of the mixed resin; (C) about 1 to about 30 parts by weight of an acryl-based copolymer based on about 100 parts by weight of the mixed resin; and (D) about 1 to about 20 parts by weight of an impact-reinforcing agent based on about 100 parts by weight of the mixed resin.Type: GrantFiled: November 18, 2009Date of Patent: March 13, 2012Assignee: Cheil Industries Inc.Inventors: Jin-Kyung Cho, Hyung-Tak Lee, Doo-Han Ha, Chang-Do Jung
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Patent number: 8133955Abstract: An aromatic polyester resin composition, comprising: a melt-kneaded product of 99-70 weight parts of an aromatic polyester resin and 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin, wherein the composition is characterized by a transesterification rate CTE (%) of 20-60% determined by formula (1) below based on a peak integration ratio of methylene group in polyglycolic acid appearing at ?4.87 ppm with reference to tetramethylsilane according to 1H-NMR measurement: CTE (%)=(1?I(B)/I(A))×100??(1), wherein I (A): a peak integration ratio of the methylene group of the polyglycolic acid main chain with respect to the alkylene group of the aromatic polyester main chain calculated from the components weight ratio; and I (B): a peak integration ratio of the methylene group of polyglycolic acid main chain to the alkylene group of the aromatic polyester main chain in the resin composition.Type: GrantFiled: January 22, 2008Date of Patent: March 13, 2012Assignee: Kureha CorporationInventors: Hiroyuki Sato, Kazuyuki Yamane, Yuki Hokari, Fuminori Kobayashi, Toshihiko Ono
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Patent number: 8114939Abstract: Metal catalyst residues in resins containing polymerized lactic acid units, such as polylactides, are deactivated by treatment with a polymer or copolymer that contain pendant acid groups and pendant ester groups, with an acid-containing PLA resin, or with a polymer or copolymer having at least one acid groups per 250 atomic mass units and which has pendant lactic acid or poly(lactic acid) groups. The deactivating agent is effective at deactivating the catalyst, and has little effect on the optical clarity of the resin.Type: GrantFiled: May 12, 2008Date of Patent: February 14, 2012Assignee: NatureWorks LLCInventors: Laura M. Babcock, Joseph D. Schroeder
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Publication number: 20120035321Abstract: The present disclosure relates to compounds and medical devices activated with a solvophobic material functionalized with a first reactive member and methods of making such compounds and devices.Type: ApplicationFiled: February 22, 2010Publication date: February 9, 2012Inventors: Sébastien Ladet, Philippe Gravagna
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Patent number: 8092830Abstract: 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: July 2, 2007Date of Patent: January 10, 2012Assignees: Wako Pure Chemical Industries, Ltd., Takeda Pharmaceutical Company LimitedInventors: Kohei Yamamoto, Tsutomu Tani, Takashi Aoki, Yoshio Hata
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Patent number: 8088884Abstract: The present disclosure provides novel POZ-2 derivatives, methods for synthesizing POZ-2 derivatives and intermediates useful in such methods. In one embodiment, the POZ-2 derivative comprises two linear POZ chains of the present disclosure linked directly or indirectly to a branching moiety that contains a functional group for linking the POZ-2 derivative to the target molecule. Target molecule-POZ-2 conjugates are also described. In certain embodiment, the POZ-2 derivatives have low polydispersity values and a decreased amount of impurities produced by unwanted side reactions, such as, but not limited to, chain transfer.Type: GrantFiled: September 29, 2008Date of Patent: January 3, 2012Assignee: Serina Therapeutics, Inc.Inventors: J. Milton Harris, Michael David Bentley, Kunsang Yoon, Zhihao Fang
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Publication number: 20110318331Abstract: A novel nanoparticle and use thereof were provided in the present invention. In particular, the nanoparticle is used for delivering therapeutic component, such as oligonucleotide and hydrophobic drug.Type: ApplicationFiled: June 29, 2010Publication date: December 29, 2011Applicant: KAOHSIUNG MEDICAL UNIVERSITYInventors: Chih-Kuang Wang, Gwo-Jaw Wang, Mei-Ling Ho, Cherng-Chyi Tzeng, Je-Ken Chang, Yin-Chih Fu
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Patent number: 8084551Abstract: Plasticization process for lactic acid polymers characterized in that it includes the grinding of the lactic acid polymers, the mixing of said ground and solid state lactic acid polymers, with mixtures of lactic acid oligomers, the subjecting of the mixture to a temperature of between 150° C. and 200° C. and at a pressure of between 1.4 bar and 4 bar, and the making up of the mixture, in a period of time of less than 30 minutes from the moment the lactic acid oligomers come in contact with lactic acid polymers.Type: GrantFiled: January 25, 2008Date of Patent: December 27, 2011Inventors: Paolo Ara, José María Garreta-Such, legal representative, Stefano Fiori
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Patent number: 8071690Abstract: A crosslinked lactic acid polymer composition containing (i) a macromer comprising (i-a) a flexible segment produced by the condensation of two or more compounds selected from the group consisting of lactones, furans, epoxies, isocyanates, anhydrides, dianhydrides, alcohols, diols, triols, carboxylic acids, dicarboxylic acids, tricarboxylic acids, esters, diesters, triesters, ethers, diethers, and triethers; and (ii) a lactic acid polymer produced by the condensation of a lactic acid monomer ordimer selected from the group consisting of D-lactic acid, L-lactic acid, D,L-lactic acid, L,L-lactide, D,D-lactide, and D,L-laclide; wherein the macromer and the lactic acid polymer contain carbon-carbon single-bond crosslinks.Type: GrantFiled: January 16, 2009Date of Patent: December 6, 2011Assignee: Tate & Lyle Ingredients Americas LLCInventors: Anders Södergard, Mikael Stolt, Geoffrey A. R. Nobes
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Publication number: 20110284855Abstract: The resin composition of the present invention is a resin composition characterized by including (a) a polyimide, a polybenzoxazole, a polyimide precursor or a polybenzoxazole precursor, (b) 1,5-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, or 2,3-dihydroxynaphthalene, and (c) a thermal cross-linking agent having a specific structure. By the use of the resin composition of the present invention, it is possible to reduce the transmittance in the visible region of a cured film while maintaining the transmittance of a resin film before curing.Type: ApplicationFiled: January 15, 2010Publication date: November 24, 2011Applicant: TORAY INDUSTRIES, INC.Inventors: Kazuto Miyoshi, Mika Koshino, Masao Tomikawa
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Patent number: 8064140Abstract: An optical grade article comprises a thermoplastic composition comprising a poly(aliphatic ester)-polycarbonate copolymer comprising 10 to 25 wt % of a soft block ester unit derived from a C20-44 aliphatic dicarboxylic acid or derivative thereof, 34 to 77 wt % of a carbonate unit derived from 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, 0 to 76 wt % of a carbonate unit derived from a dihydroxyaromatic compound not identical to the 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, wherein the weight percentages of soft block ester units, 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine units, and dihydroxyaromatic compound units is 100 weight percent of the monomeric units of the poly(aliphatic ester)-polycarbonate, the refractive index of the thermoplastic composition is greater than 1.590, and the glass transition temperature of the poly(aliphatic ester)-polycarbonate is from 120 to 155° C. A camera lens also comprises the poly(aliphatic ester)-polycarbonate.Type: GrantFiled: September 10, 2010Date of Patent: November 22, 2011Assignee: Sabic Innovative Plastics IP B.V.Inventors: Theodorus Lambertus Hoeks, Jan Henk Kamps, Dennis Karlik, Edward Kung, Michael Teruki Takemori
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Publication number: 20110274907Abstract: Curative fibre components comprise one or more fibres for filaments of curative suitable to cure curable resins such as thermoset resin. In curative fibre components comprising a plurality of fibres of curative, the fibres can be commingled, such as twisting, to form a thread or yarn. Curative fibre components can be used to form a material in the form of a sheet, fabric, layer, textile or mat of woven or non-woven curative fibres. Curative fibre components can be used to produce composite materials such as fibre reinforced resinous composite materials. The curative fibre components can be commingled, including interwoven, stitched and layered with other fibres or fibrous materials, such as fibrous reinforcement, fibrous curable resin, fibrous thermoplastic, other non-reinforcing fibres to form composite materials, prepregs, preforms and articles.Type: ApplicationFiled: November 24, 2009Publication date: November 10, 2011Inventors: Mark Raymond Steele, Andrew Gibbs, Amy Grace Atinkson
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Patent number: 8053546Abstract: The use of 1,3-substituted imidazolium salts of the formula I in which R1 and R3 independently of one another are an organic radical having 1 to 20 C atoms, R2, R4, and R5 independently of one another are an H atom or an organic radical having 1 to 20 C atoms, it also being possible for R4 and R5 together to form an aliphatic or aromatic ring, X is an anion having a pKb of less than 13 (measured at 25° C., 1 bar in water or dimethyl sulfoxide), and n is 1, 2 or 3, with the exception as imidazolium salts of 1-ethyl-2,3-dimethylimidazolium acetate and 1-ethyl-2,3-dimethylimidazolium acetate-acetic acid complex, as latent catalysts for curing compositions comprising epoxy compounds.Type: GrantFiled: June 6, 2008Date of Patent: November 8, 2011Assignee: BASF SEInventors: Georg Degen, Matthias Maase, Lars Wittenbecher, Manfred Döring, Ulrich Arnold
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Patent number: 8013065Abstract: A method for making a multi-branched polymer includes reacting a first polymeric unit with a functional cyclic compound to form a functional macroinitiator compound with a cyclic moiety. The functional macroinitiator compound is reacted with an amine functional compound to open the cyclic moiety and form a first functional group and a second functional group. To form the branched polymer, at least one of a second polymeric unit is propagated from the first functional group and a third polymeric unit is propagated from the second functional group.Type: GrantFiled: June 9, 2009Date of Patent: September 6, 2011Assignees: International Business Machines Corporation, The Board of Trustees of the Leland Stanford Junior UniversityInventors: James L. Hedrick, Eric Appel, Robert D. Miller, Fredrik Nederberg, Robert M. Waymouth
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Publication number: 20110213090Abstract: Inherently radiopaque side-chain crystallizable polymers (IRSCCP's) are useful in various medical applications. An example of a IRSCCP is a polymer that comprises a main chain, a plurality of crystallizable side chains, and a plurality of heavy atoms attached to the polymer, the heavy atoms being present in an amount that is effective to render the polymer radiopaque. A polymeric material that includes a IRSCCP may be fabricated into a medical device useful for at least partially occluding a body cavity. For example, such a medical device may be an embolotherapy product.Type: ApplicationFiled: May 5, 2011Publication date: September 1, 2011Applicant: REVA Medical, Inc.Inventors: Donald K. Brandom, Joan Zeltinger, Eric V. Schmid, Joseph J. Mallon
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Patent number: 8008390Abstract: Polyoxymethylene molding compositions, their use, and moldings produced therefrom A ground molding composition is described, comprising a) a compounded material composed of i) at least one polyoxymethylene homo- and/or copolymer, ii) at least one impact modifier, and iii) optionally other conventional additives, which b) has been milled to give a powder at least 90% by weight of whose particles have a grain size of <600 ?m and a median grain size (D50) of from 100 to 500 ?m. These molding compositions can be processed to give moldings, in particular via rotomolding.Type: GrantFiled: September 14, 2006Date of Patent: August 30, 2011Assignee: Ticona GmbHInventors: Thomas Günnewig, Klaus Kurz, Guido Latz, Kirsten Markgraf
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Patent number: 8008429Abstract: Disclosed is a thermosetting resin composition of excellent low-temperature curability comprising an oxetane compound and also disclosed is a cured article obtained therefrom. The thermosetting resin composition comprises an oxetane compound (A) containing two or more oxetane functional groups in the molecule represented by the following general formula (1) and a heteropolyacid (B) as essential components. A cured article obtained by heat curing of this composition shows excellent mechanical properties, electrical properties, adhesive properties, resistance to heat, moisture, and chemicals, and the like. In formula (1), R1 is a hydrogen atom, alkyl group of 1 to 6 carbon atoms, fluorine atom, fluoroalkyl group of 1 to 6 carbon atoms, allyl group, aryl group, aralkyl group, furyl group, or thienyl group.Type: GrantFiled: August 23, 2006Date of Patent: August 30, 2011Assignee: Nippon Steel Chemical Co., Ltd.Inventors: Atsuhiko Katayama, Niranjan Kumar Shrestha
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Patent number: 8003731Abstract: The invention relates to biodegradable polyester mixture, comprising i) from 5 to 80% by weight, based on the total weight of components i to ii, of at least one polyester based on aliphatic and aromatic dicarboxylic acids and on aliphatic dihydroxy compounds, and ii) from 20 to 95% by weight, based on the total weight of components i to ii, of at least one biodegradable homo- or copolyester selected from the group consisting of polylactide, polycaprolactone, polyhydroxyalkanoates, and polyesters composed of aliphatic dicarboxylic acids and of aliphatic diols, and iii) from 0.Type: GrantFiled: December 31, 2005Date of Patent: August 23, 2011Assignee: BASF SEInventors: Ursula Seeliger, Gabriel Skupin, Dirk Stärke
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Publication number: 20110201710Abstract: The present invention relates to methods for preparing biodegradable polymer stereocomplexes using a supercritical fluid-organic solvent system and polymer stereocomplexes prepared by such methods. The method of the present invention involves introducing two types of homopolymers having different stereostructures and a small amount of organic solvent into a reactor, adding a supercritical fluid thereto, followed by applying a specific temperature and pressure to form a polymer stereocomplex having a crystalline structure. According to the method of the present invention, biodegradable polymer stereocomplexes in the form of powder or porous foam having excellent thermal and mechanical stabilities can be prepared in a simple, economical and environmentally-friendly manner in a single process.Type: ApplicationFiled: November 17, 2010Publication date: August 18, 2011Inventors: Soo Hyun Kim, Young Mee Jung, Sang-Heon Kim, Purnama Purba
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Patent number: 7998543Abstract: A novel dioxetane compound is provided having a cationically polymerizable oxetane group, which compound is excellent in compatibility with a liquid crystalline compound and a non-liquid crystalline compound. An optical film is also provided with excellent liquid crystal orientation retention properties and mechanical strength, produced by aligning a composition of the dioxetane compound and a cationically polymerizable compound in a liquid crystal orientation and fixing the liquid crystal orientation by polymerization. Further, a liquid crystal display device is provided with the optical film.Type: GrantFiled: October 17, 2006Date of Patent: August 16, 2011Assignee: Nippon Oil CorporationInventors: Takashi Seki, Takeshi Kataoka, Hitoshi Mazaki, Hirofumi Aizono
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Publication number: 20110196051Abstract: An electrolyte membrane includes a cross-linked reaction product of a benzoxazine monomer and a cross-linkable compound. The electrolyte membrane is impregnated with 300 to 600 parts by weight of phosphoric acid based on 100 parts by weight of the electrolyte membrane, and has a yield strain 0.5% or less, and a yield stress 0.3 Mpa or less. The cross-linked material has a strong acid trapping ability with respect to the benzoxazine compound and excellent mechanical properties due to a cross-linkage. Also, the solubility of the cross-linked material in polyphosphoric acid is low, thereby showing excellent chemical stability. Accordingly, when the cross-linked material is used, an electrolyte membrane having an excellent liquid supplementing ability and excellent mechanical and chemical stability at a high temperature can be obtained.Type: ApplicationFiled: December 22, 2010Publication date: August 11, 2011Applicant: SAMSUNG SDI CO., LTD.Inventors: Myung-jin LEE, Seong-woo CHOI, Hee-young SUN, Woo-sung JEON
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Publication number: 20110195338Abstract: A hyper-branched polymer, which is a product obtained by performing condensation polymerization reaction of a hyper-branched polymer composition including a diisocyanate-based compound and a dihydroxyamine-based compound, a cross-linked hyper-branched polymer, an electrode and electrolyte membrane for a fuel cell including the hyper-branched polymer or the cross-linked hyper-branched polymer, and a fuel cell including the electrode and the electrolyte membrane.Type: ApplicationFiled: February 2, 2011Publication date: August 11, 2011Applicants: SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATIONInventors: Seong-woo CHOI, Cheol-hee AHN, Jung-ock PARK, So-young PARK
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Patent number: 7993745Abstract: The object of the present invention is to provide a polylactic acid stretched film having biodegradability and excelling in transparency and heat resistance. The main feature is characterized in that a polylactic acid stretched film is composed of a polylactic acid composition containing poly-L-lactic acid and poly-D-lactic acid in which a peak ratio (peak 1/peak 2) of a peak height (peak 1) of a maximum endothermic peak of endothermic peaks within a range of 150 to 200° C. to a peak height (peak 2) of a maximum endothermic peak of endothermic peaks within a range of 205 to 240° C. in DSC measurements is equal to or less than 0.2.Type: GrantFiled: July 24, 2007Date of Patent: August 9, 2011Assignee: Tohcello Co., Ltd.Inventors: Junichi Narita, Hiroyuki Wakaki
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Patent number: 7993755Abstract: A polyamide molding composition is described, comprising at least one transparent polyesteramide in a proportion by weight of from 70 to 99.99% by weight; at least one further polymer in a proportion by weight of from 0 to 30% by weight; at least one photochromic dye in a proportion by weight of from 0.01 to 2% by weight; and also optionally further dyes and/or additives. The invention further encompasses articles manufactured therefrom, e.g. foils, for the coating of photochromic ophthalmic lenses, or the like.Type: GrantFiled: July 16, 2008Date of Patent: August 9, 2011Assignee: EMS-Patent AGInventors: Ralf Hala, Botho Hoffmann, Nikolai Lamberts
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Patent number: 7989553Abstract: Disclosed is a novel epoxy-amine composition modified a hydroxyalkyl urethane, which is obtained as a result of a reaction between a primary amine (C1) and a monocyclocarbonate (C2), wherein modifier (C) is represented by the following formula (1): wherein R1 is a residue of the primary amine, R2 and R3 are the same or different and are selected from the group consisting of H, alkyl, hydroxyalkyl, and n satisfies the following condition: n?2. Diluents, pigments and additives can be used. Doping with the hydroxyalkyl-urethane modifier imparts to the cured composition superior coating performance characteristics, such as pot-life/drying, strength-stress, bonding, appearance, resistance to abrasion and solvents, etc., in a well-balanced state.Type: GrantFiled: March 26, 2009Date of Patent: August 2, 2011Assignees: Nanotech Industries, Inc., Polymate, Ltd.Inventors: Olga Birukov, Oleg Figovsky, Alexander Leykin, Leonid Shapovalov
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Publication number: 20110183099Abstract: The present invention relates to a block copolymer derived from at least one tetrahydrofuran monomer containing 14C. The present invention also relates to a method for preparing such a block copolymer.Type: ApplicationFiled: October 6, 2009Publication date: July 28, 2011Inventors: Frederic Malet, Guillauma Le, Julien Jouanneau
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Publication number: 20110172356Abstract: The present invention relates to curable compositions comprising (a) at least one benzoxazine component selected from the group consisting of N-alkyl and N-alkenyl benzoxazines, and (b) a prepolymer produced from a diisocyanate. The compositions are particularly suitable in the production of adhesives and sealants, prepregs and towpregs.Type: ApplicationFiled: March 18, 2011Publication date: July 14, 2011Inventors: Stefan Kreiling, Rainer Schonfeld, Andreas Taden, Michael Kux, Harald Küster, Stanley L. Lehmann
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Patent number: 7977452Abstract: This invention provides a cost effective process and new Janus dendrimers where at least two dendrons are attached at the core (with or without a connector group) and where at least two of the dendrons have different functionality. Preferred are those Janus dendrimers where at least one dendron is a PEHAM dendron. Thus these Janus dendrimers are heterobifunctional in character and use unique ligation chemistry with single site functional dendrons, di-dendrons and multi-dendrons. Also included are Janus dendrons which may be used as intermediates to make the Janus dendrimers or to further react with another reactive moiety.Type: GrantFiled: March 27, 2006Date of Patent: July 12, 2011Assignee: Dendritic Nanotechnologies, Inc.Inventors: Donald A. Tomalia, Veera Reddy Pulgam, Douglas R. Swanson, Boahua Huang