Solid Polymer Derived From Hydroxy-containing Carboxylic Acid Or Derivative Reactant Patents (Class 525/450)
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Patent number: 8445593Abstract: A resin composition comprises a polylactic acid resin (A) 75-10 wt %, an aromatic polycarbonate resin (B) 25-90 wt % and a polymer compound to which a glycidyl compound or an acid anhydride is grafted or copolymerized (D) 1-50 wt parts with respect to 100 wt parts of the total of the component (A) and the component (B).Type: GrantFiled: November 24, 2010Date of Patent: May 21, 2013Assignee: Toray Industries, Inc.Inventors: Hiromitsu Ishii, Takashi Nagao, Hiroyuki Ohme
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Patent number: 8445604Abstract: The present invention relates to articles made of a thermoformable resin comprising a biodegradable polymer having polybutylene succinate (PBS) via extrusion using an extruder which comprise: a biodegradable polymer having: (a) a Ts value of up to about 160° C. (e.g., in the range of from about 50° to about 150° C.); (b) a heat distortion index of up to about 150° C. (for example, up to about 120° C.); and (c) optionally, a Tm in the range of from about 70° to about 160° C. (e.g., in the range of from about 80° to about 150° C.). Thermoformed article such as a food or beverage cup, lid, cutlery item, foodservice item, molded tray, food storage container, etc provide the ability to resist deformation during higher temperature conditions that may occur during storage and distribution.Type: GrantFiled: November 17, 2010Date of Patent: May 21, 2013Assignee: International Paper CompanyInventors: Wei Li, Richard A Tedford, Bruce J Thoman, Thomas Robert Christie
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Patent number: 8445576Abstract: Continuous process for preparation of polyalkylene arylates A) comprising highly branched or hyperbranched polymers B) and, if appropriate, comprising lubricants C), by esterifying or transesterifying an aromatic dicarboxylic acid or its ester or ester-forming derivatives, with a molar excess of an aliphatic dihydroxy compound, and polycondensing the resultant transesterification or esterification product, which comprises, on achievement of at least 80% of the desired viscosity number, adding component B) and also, if appropriate, C) to the polymer melt, and, if appropriate, post-condensing the melt and then discharging, cooling, and pelletizing it, and also using, as component B), at least one highly branched or hyperbranched polycarbonate B1) with an OH number of from 1 to 600 mg KOH/g of polycarbonate (to DIN 53240, Part 2), or at least one highly branched or hyperbranched polyester B2) of AxBy type, where x is at least 1.1 and y is at least 2.1, or a mixture of these.Type: GrantFiled: July 19, 2005Date of Patent: May 21, 2013Assignee: BASF SEInventors: Andreas Eipper, Bernd Bruchmann, Carsten Weiβ, Jean-Francois Stumbe, Michael Geprägs
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Patent number: 8445628Abstract: Disclosed is a copolymer resin composition including a lactic acid copolymer, the lactic acid copolymer containing monomer units represented by the following chemical formulas [1], [2], and [3], wherein a content of a monomer unit represented by the chemical formula [3] is 50 mol % or more and 95 mol % or less, a weight-average molecular weight of the lactic acid copolymer is 20,000 or more and 1,000,000 or less, and a deflection temperature of the lactic acid copolymer under load is 65° C. or higher and 100° C. or lower at a bending stress of 1.80 MPa.Type: GrantFiled: June 30, 2010Date of Patent: May 21, 2013Assignee: Ricoh Company, Ltd.Inventors: Yasuo Yamanaka, Tadakatsu Harada, Hidekazu Yaginuma, Masanobu Munekata, Kenji Tajima, Yasuharu Satoh, Tokuo Matsushima
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Patent number: 8445602Abstract: The present invention provides a poly lactic acid resin including an L-lactic acid block and a D-lactic acid block, which blocks are bonded by a carbonate bonding.Type: GrantFiled: November 8, 2010Date of Patent: May 21, 2013Assignee: Fuji Xerox Co., Ltd.Inventor: Kenji Yao
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Patent number: 8444905Abstract: 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: July 30, 2012Date of Patent: May 21, 2013Assignee: Fina Technology, Inc.Inventors: Fengkui Li, Tim J. Coffy, Michel Daumerie
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Publication number: 20130116383Abstract: The present invention relates to a crosslinked lignin comprising a lignin structure having methylene or ethylene linking groups therein crosslinking between phenyl ring carbon atoms, wherein said crosslinked lignin is crosslinked to an extent that it has a number-average molecular weight of at least 10,000 g/mol, is melt-processible, and has either a glass transition temperature of at least 100° C., or is substantially soluble in a polar organic solvent or aqueous alkaline solution. Thermoplastic copolymers containing the crosslinked lignin are also described. Methods for producing the crosslinked lignin and thermoplastic copolymers are also described.Type: ApplicationFiled: November 3, 2011Publication date: May 9, 2013Applicant: UT-BATTELLE, LLCInventors: Amit K. Naskar, Tomonori Saito, Joseph M. Pickel, Frederick S. Baker, Cliff Eberle, Robert E. Norris, JR., Jonathan Richard Mielenz
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Publication number: 20130108821Abstract: The present disclosure provides copolymers useful in medical devices. For example, the disclosure provides copolymers comprising the polymerization product ester block, ether blocks and diisocyanates. In certain embodiments, the disclosure provides a medical copolymer for implantation comprising ester blocks and ether blocks, wherein: the ester blocks comprise a negative free energy transfer and the ether blocks comprise a positive free energy transfer, the ether and ester blocks are less than 1/10 the length of said copolymer, and, the blocks are distributed such that no domain of contiguous blocks possessing the same polarity of free energy transfer are less than ? of the molecular weight of the copolymer. The disclosure further provides methods of making the aforementioned polymers, and medical devices comprising the polymers.Type: ApplicationFiled: September 21, 2012Publication date: May 2, 2013Applicant: BVW HOLDING AGInventor: BVW HOLDING AG
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Publication number: 20130103079Abstract: A material comprising two or more fibers, wherein each of the fibers has a mechanical modulus, and the mechanical modulus of at least one fiber is higher than the mechanical modulus of another fiber. The higher modulus fiber has a longer length than the lower modulus fiber. In various embodiments, the higher modulus fiber is collagen mimetic and the lower modulus fiber is elastin mimetic. A suture is also described, comprising two or more fibers. At least one of the fibers is elastin-like and has a lower elastic modulus than another fiber that is collagen-like and has a higher elastic modulus. The higher modulus collagen-like fiber is longer than the lower modulus elastin-like fiber.Type: ApplicationFiled: October 24, 2012Publication date: April 25, 2013Applicant: NOVO CONTOUR, INC.Inventor: Novo Contour, Inc.
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Publication number: 20130096255Abstract: The present invention relates to a process for the preparation of low-viscosity polyisocyanate reaction products which contain allophanate groups, can be readily emulsified in water and contain activated groups which react, by polymerization, with ethylenically unsaturated compounds under the action of actinic radiation. The present invention furthermore relates to the products which can be prepared by the process according to the invention and their use.Type: ApplicationFiled: October 15, 2012Publication date: April 18, 2013Applicant: Bayer Intellectual Property GmbHInventor: Bayer Intellectual Property GmbH
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Publication number: 20130096251Abstract: Embodiments of the invention relate to crosslinkable silyl group-containing polymers and methods of producing them. In one embodiment a method of producing a silyl polymer is provided. The method includes reacting at least one natural oil based polyol with at least one isocyanate to form at least one prepolymer having at least one NCO group. The at least one natural oil based polyol includes the reaction product of hydroxymethylated fatty acids or esters thereof and at least one polyol initiator. The prepolymer having at least one NCO group is reacted with at least one amino functional alkoxy silane to form the silyl polymer, such that the silyl polymer includes at least one crosslinkable silyl group, at least one urethane group, and at least one urea group in each molecule.Type: ApplicationFiled: June 21, 2011Publication date: April 18, 2013Applicant: Dow Global Technologies LLCInventors: Paul J. Popa, Gary E. Spilman, Zenon Lysenko, William A. Koonce, David A. Bobb, Martin C. Beebe, Thomas C. Thyne
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Publication number: 20130085238Abstract: The present invention relates to new classes of monomeric compounds, which may be polymerized to form novel biodegradable and bioresorble polymers and co-polymers. These polymers and co-polymers, while not limited thereto, may be adapted for radio-opacity and are useful for medical device applications and controlled release therapeutic formulations.Type: ApplicationFiled: July 18, 2012Publication date: April 4, 2013Applicant: RUTGERS, THE STATE UNIVERSITY OF NEW JERSEYInventors: Durgadas Bolikal, Don K. Brandom, Lioubov Kabalnova, Ernest G. Baluca, Joachim Kohn
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Publication number: 20130085185Abstract: Methods for making P4HB polymers and copolymers thereof that are useful for preparing controlled release systems, medical devices and as intermediates in chemical synthesis, have been developed. These methods avoid the use of organic solvents, and basic conditions that can cause transesterification reactions with polymer terminal end groups or elimination reactions. A preferred embodiment is a method for producing polymers of P4HB with weight average molecular weight less than 250,000, and more preferably, less than 100,000, and a Pd of less than 3, which are useful in controlled release. A particularly preferred embodiment utilizes aqueous acetic acid to hydrolyze pellets of P4HB polymers and copolymers while in suspension.Type: ApplicationFiled: September 26, 2012Publication date: April 4, 2013Applicant: TEPHA, INC.Inventor: Tepha, Inc
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Publication number: 20130085239Abstract: Polyether block copolymers of the general structure B-(A-OH)n are described, where n is greater than or equal to 2 and blocks A are made up of polyoxypropylene units and the central block B of polyoxytetramethylene, polyoxyethylene, polybutadiene, polyisoprene, polyacrylate, polymethacrylate, polyamide, polyurethane, or polyester units. These polyether block copolymers are suitable for the manufacture of compositions that serve as the basis for preparations for use as a one-component moisture-hardening or two-component adhesive or sealant, for assembly bonding, for areal bonding, and/or for coating, as a reactive melt adhesive or as a laminating adhesive.Type: ApplicationFiled: July 27, 2012Publication date: April 4, 2013Applicant: Henkel AG & Co. KGaAInventors: Lars Zander, Uwe Franken, Christiane Kunze, Michael Krebs, Johann Klein
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Publication number: 20130081821Abstract: The present invention relates to the use of composite material in downhole applications, and more particularly, relates to methods of making composite material comprising reinforced amorphous polylactic acid and methods of use related thereto. Some methods comprise providing an amorphous polylactic acid and a solid reinforcing material; forming a composite material by melting the amorphous polylactic acid and mixing it with the solid reinforcing material; and, using the composite material in a downhole application.Type: ApplicationFiled: October 4, 2011Publication date: April 4, 2013Inventors: Feng Liang, Rajesh K. Saini, Bradley L. Todd
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Publication number: 20130079440Abstract: This invention relates to aliphatic-aromatic copolyesters that can exhibit improved tear strength and improved rate of biodegradation. Particularly to an aliphatic-aromatic copolyester having a dicarboxylic acid component and a glycol component. The invention also relates to articles and blends using the copolyesters.Type: ApplicationFiled: November 23, 2012Publication date: March 28, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: E I DU PONT DE NEMOURS AND COMPANY
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Patent number: 8404799Abstract: In one aspect, the present invention provides a process for forming polymeric nanoparticles, which comprises using a static mixer to create a mixed flowing stream of an anti-solvent, e.g., by introducing a liquid anti-solvent into a static mixer, and introducing a polymer solution into the mixed flowing anti-solvent stream such that controlled precipitation of polymeric nanoparticles occurs. The nanoparticles can then be separated from the anti-solvent steam.Type: GrantFiled: May 24, 2012Date of Patent: March 26, 2013Assignee: Cerulean Pharma Inc.Inventors: John Podobinski, J. Michael Ramstack, David S. Dickey
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Publication number: 20130071588Abstract: This invention relates to an aliphatic-aromatic copolyester characterised in that it has appreciable workability properties even when mixed with other polymers, appreciable toughness and high values for ultimate tensile strength and elastic modulus. This invention also relates to mixtures of the said copolyester with other polymers.Type: ApplicationFiled: May 24, 2011Publication date: March 21, 2013Applicant: NOVAMONT S.p.A.Inventors: Catia Bastioli, Giampietro Borsotti, Luigi Capuzzi, Tiziana Milizia, Roberto Vallero
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Publication number: 20130072641Abstract: The invention relates to a crosslinkable polymer binder comprising a polyurethane macromer and grafted thereon a vinyl polymer, to an aqueous dispersion comprising said crosslinkable polymer binder and to a process for the manufacture of said crosslinkable polymer binder and said aqueous dispersion thereof. The crosslinkable polymer binder can be used in coating compositions or adhesives.Type: ApplicationFiled: November 13, 2012Publication date: March 21, 2013Applicant: NUPLEX RESINS B.V.Inventor: NUPLEX RESINS B.V.
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Publication number: 20130068304Abstract: There is provided a sealing material including a composite resin (A) including a polysiloxane segment (a1) having a structural unit represented by general formula (1) and/or general formula (2) and a silanol group and/or a hydrolyzable silyl group and a vinyl-based polymer segment (a2) having an alcoholic hydroxyl group, the vinyl-based polymer segment (a2) being bonded to the polysiloxane segment (a1) through a bond represented by general formula (3), and a polyisocyanate (B), wherein the content of the polysiloxane segment (a1) is 10% to 50% by weight relative to the total solid content of a curable resin composition, and the content of the polyisocyanate (B) is 5% to 50% by weight relative to the total solid content of the curable resin composition. There are also provided a solar cell module and a light-emitting diode that each use the sealing material.Type: ApplicationFiled: May 24, 2011Publication date: March 21, 2013Applicant: DIC CORPORATIONInventors: Takayuki Kanematsu, Naoto Yagi, Hisashi Tanimoto, Tomoko Shishikura
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Publication number: 20130072642Abstract: A blend of polylactic acid resin and copolyester resin and a molded article using the same having superior impact resistance and heat resistance are disclosed. The blend of polylactic acid resin and copolyester resin includes: 5 to 95 weight % of polylactic acid resin; and 5 to 95 weight % of copolyester resin which is a copolymerization product of an acid component including terephthalic acid and a diol component including 5 to 99 mol % of 1,4-cyclohexanedimethanol and 1 to 60 mol % of isosorbide(bio monomer), and has a repeated structure of an acid moiety derived from the acid component and a diol moiety derived from the diol component.Type: ApplicationFiled: May 19, 2011Publication date: March 21, 2013Applicant: SK CHEMICALS CO., LTD.Inventors: Roy Lee, Jong-Ryang Kim, Kye-Yune Lee, Jong-Wook Shin, Young-Man Yoo
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Publication number: 20130065042Abstract: A microvascular system includes a solid polymeric matrix and a woven structure in the matrix. The woven structure includes a plurality of fibers, and a plurality of microfluidic channels, where at least a portion of the microfluidic channels are interconnected. The microvascular system may be made by forming a composite that includes a solid polymeric matrix and a plurality of sacrificial fibers in the matrix, heating the composite to a temperature of from 100 to 250° C., maintaining the composite at a temperature of from 100 to 250° C. for a time sufficient to form degradants from the sacrificial fibers, and removing the degradants from the composite. The sacrificial fibers may include a polymeric fiber matrix including a poly(hydroxyalkanoate) and a metal selected from the group consisting of an alkali earth metal and a transition metal, in the fiber matrix, where the concentration of the metal in the fiber matrix is at least 0.1 wt %.Type: ApplicationFiled: March 9, 2012Publication date: March 14, 2013Applicant: The Board of Trustees of the University of IllinoisInventors: Aaron Esser-Kahn, Hefei Dong, Piyush R. Thakre, Jason F. Patrick, Nancy R. Sottos, Jeffrey S. Moore, Scott R. White
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Publication number: 20130065046Abstract: Compositions of polymer blends of polylactic acid (PLA) and polyhydroxyalkanoate are described. In certain embodiments, the PHA is a multiphase copolymer blend having one phase a fully amorphous phase with a glass transition temperature of below 20° C. and is between about 5 to about 45% of the total PHA. Methods of making the compositions of the invention are also described. The invention also includes articles, films and laminates comprising the compositions.Type: ApplicationFiled: May 17, 2011Publication date: March 14, 2013Inventor: Rajendra K. Krishnaswamy
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Publication number: 20130045392Abstract: The present invention relates to a method for preparing a hydrophobized biomaterial consisting of a hydrophilic material, notably selected from vegetable fibers having hydroxyl functions, on which are grafted chains of polymers having ester functions, said method comprising a step for putting said hydrophilic material in contact with said polymers and for a transesterification reaction between said ester functions and said hydroxyl functions.Type: ApplicationFiled: February 24, 2011Publication date: February 21, 2013Applicant: Centre National de la Recherche Scientifique (C.N.R.S)Inventors: Valérie Langlois, Estelle Renard, Xavier Samain
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Patent number: 8378027Abstract: Disclosed is a method for manufacturing a polylactic acid composite composition, and a polylactic acid composite composition formed thereby. More particularly, there is disclosed a method for manufacturing a polylactic acid composite composition including: melting and blending a composition containing 60-80 wt % of a poly(L-lactic acid) resin, 15-30 wt % of a poly(D-lactic acid) resin and 5-10 wt % of a poly(ethylene-alkyl acrylate-glycidyl methacrylate) resin at 190-195° C.; and injecting the resulting melt in a mold whose surface temperature is 100-110° C. The present invention provides a material having superior heat resistance, impact strength and tensile strength by blending the PLLA resin, the PDLA resin and the poly(ethylene-alkyl acrylate-glycidyl methacrylate) resin at specific proportion, under controlled processing and molding conditions.Type: GrantFiled: June 8, 2011Date of Patent: February 19, 2013Assignee: Hyundai Motor CompanyInventors: Chae Hwan Hong, Do Suck Han
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Publication number: 20130040086Abstract: An outer casing for an electric device which is a molded article of a environmental resin wherein poly(lactic acid) and/or a lactic acid copolymer is used, is constituted by molding a flame-retarded resin composition including a resin component containing poly(lactic acid) and/or the lactic acid copolymer as a main ingredient, and silica-magnesia catalyst particles as a flame retardance-imparting component which imparts flame retardance, wherein an organometallic compound is attached to a part of surfaces or the entire surfaces of the silica-magnesia catalyst particles. The organometallic compound is preferably a titanium-based coupling agent or a zirconium-based coupling agent.Type: ApplicationFiled: October 16, 2012Publication date: February 14, 2013Applicant: PANASONIC CORPORATIONInventor: PANASONIC CORPORATION
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Patent number: 8372917Abstract: 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: July 30, 2012Date of Patent: February 12, 2013Assignee: Fina Technology IncInventors: Fengkui Li, Tim J. Coffy, Michel Daumerie
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Publication number: 20130035449Abstract: Disclosed are a method for preparing biodegradable polymer materials, biodegradable polymer materials, and a product for fixing bone. The method includes a complex preparing step of preparing polylactide stereoisomeric complex by using a polymer having weight-average molecular weight more than 100,000 g/mol; a molding step of compression-molding the complex; a cooling step of cooling the compression-molded complex; and an extruding step of solid state extruding the cooled complex. Biodegradable polymer materials prepared by the method may be applied to a product for fixing bone or spine requiring high strength. Biodegradable polymer materials may have no corrosion in the body, may require no additional operation for removal after healing bones and tissues, and may prevent stress shielding.Type: ApplicationFiled: August 3, 2012Publication date: February 7, 2013Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Young Mee JUNG, Soo Hyun Kim, Sang Heon Kim, Young Ha Kim
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Publication number: 20130035450Abstract: An outer casing for an electric device which is a molded article of a environmental resin wherein poly(lactic acid) and/or a lactic acid copolymer is used, is constituted by molding a flame-retarded resin composition including a resin component containing poly(lactic acid) and/or the lactic acid copolymer as a main ingredient, and silica-magnesia catalyst particles as a flame retardance-imparting component which imparts flame retardance, wherein the content of the silica-magnesia catalyst particles is 0.5% by weight or more and 9.0% by weight or less of the total weight of the flame-retarded resin composition. The silica-magnesia catalyst particles preferably have an average particle diameter of 10 ?m or less.Type: ApplicationFiled: October 11, 2012Publication date: February 7, 2013Applicant: PANASONIC CORPORATIONInventor: PANASONIC CORPORATION
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Patent number: 8367773Abstract: A process is described for obtaining a chemical blend of a polyolefin with a poly(hydroxy carboxylic acid) by mixing poly(hydroxy carboxylic acid) with at least one polyolefin in the presence of a compatibilising compound having at least one polymerisable double bond and at least one electrophilic functional group. The invention also relates to the chemical blend obtainable according to this process, as well as the use of the compatibilising compound to obtain chemical blends of polyolefin with poly(hydroxy carboxylic acid).Type: GrantFiled: October 2, 2009Date of Patent: February 5, 2013Assignee: Total Petrochemicals Research FeluyInventor: Thierry Coupin
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Patent number: 8367780Abstract: A block or graft copolymer including a thermoplastic resin segment and as an aliphatic polyester segment is provided. The copolymer can be used as a compatibilizer for a resin alloy comprising polylactic acid, which can reduce the consumption of petroleum raw materials.Type: GrantFiled: December 4, 2009Date of Patent: February 5, 2013Assignee: Cheil Industries Inc.Inventors: Ji Won Pack, Byeong Do Lee, Chang Do Jung, Hyung Tak Lee
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Patent number: 8362157Abstract: The invention aims at providing a polylactic acid composition having specific thermal characteristics and gas barrier properties and at obtaining a polylactic acid composition comprising PLLA and PDLA which composition can form moldings (such as stretched film) excellent in surface smoothness, transparency, heat resistance, and toughness. Specifically, a polylactic acid composition characterized by exhibiting a peak of 30 mJ/mg or above in DSC as determined by cooling at a rate of 10° C./min after the lapse of 10 min at 250° C., preferably a polylactic acid composition characterized by exhibiting a peak (1)/peak (2) ratio of 0.5 or below wherein the peak (1) and peak (2) correspond to a peak of Tm of 150 to 180° C. and a peak of Tm of 200 to 240° C. respectively in DSC as observed in the second heating (namely, re-heating from 0° C. at a rate of 10° C./min which follows the cooling at a rate of 10° C./min conducted after the lapse of 10 min at 250° C.).Type: GrantFiled: March 10, 2006Date of Patent: January 29, 2013Assignee: Tohcello Co., Ltd.Inventors: Hiroyuki Wakaki, Junichi Narita
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Patent number: 8362159Abstract: Disclosed is a biocompatible block copolymer containing the polycondensation product of a diol and an additional component selected from the group of the same diol, an ?,?-dihydroxy-polyester or an ?,?-dihydroxy-polyether. Also disclosed are a medical implant containing the block copolymer, the use of said block copolymer for the production of a medical implant, a diol and a method for the production thereof. The diol may be obtained by transesterification of ?,?-dihydroxy-[(oligo(3-(R)-hydroxybutyrate)-ethylene-oligo-(3-(R)-hydroxybutyrate)] with diglycolide. Transesterification is carried out, preferably, in the presence of a catalyst.Type: GrantFiled: November 5, 2010Date of Patent: January 29, 2013Assignee: Eidgenossische Technische Hochschule ZurichInventor: Peter Neuenschwander
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Patent number: 8362158Abstract: A polyglycolic acid resin composition having improved moisture resistance is obtained by adding a carboxyl group-capping agent and a polymerization catalyst-deactivation agent to a polyglycolic acid resin.Type: GrantFiled: November 30, 2006Date of Patent: January 29, 2013Assignee: Kureha CorporationInventors: Hiroyuki Sato, Fumio Akutsu, Fuminori Kobayashi
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Publication number: 20130020526Abstract: Disclosed are water-soluble nanoparticles. The water-soluble nanoparticles are each surrounded by a multifunctional group ligand including an adhesive region, a cross linking region, and a reactive region. In the water-soluble nanoparticles, the cross-linking region of the multifunctional group ligand is cross-linked with another cross-linking region of a neighboring multifunctional group ligand.Type: ApplicationFiled: July 16, 2012Publication date: January 24, 2013Applicant: Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Jin-Woo CHEON, Young-Wook JUN, Jin-Sil CHOI
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Publication number: 20130017265Abstract: Delivery compositions are provided that include two or more active agents, wherein at least one active agent is conjugated to a polymer. The delivery compositions allow for controlled release of multiple active agents, including active agents with varying solubility, charge, and/or molecular weight.Type: ApplicationFiled: December 16, 2010Publication date: January 17, 2013Applicants: MASSACHUSETTS INSTITUTE OF TECHNOLOGY, THE BRIGHAM AND WOMEN'S HOSPITAL, INC.Inventors: Omid C. Farokhzad, Nagesh Kolishetti, Shanta Dhar, Stephen J. Lippard, Robert S. Langer, Pedro M. Valencia
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Publication number: 20130018111Abstract: This invention relates to shape memory block copolymers comprising: at least one switching segment having a Ttrans from 10 to 70° C.; and at least one soft segment, wherein at least one of the switching segments is linked to at least one of the soft segments by at least one linkage, and wherein the copolymer transforms from a first shape to a second shape by application of a first stimulus and the copolymer transforms back to the first shape from the second shape by application of a second stimulus. The shape memory block copolymers may be biocompatible and biodegradable.Type: ApplicationFiled: March 18, 2011Publication date: January 17, 2013Applicant: Agency for Science ,Technology and ResearchInventors: Xian Jun Loh, Jun Li
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Patent number: 8354479Abstract: The present invention provides a functional filler which is excellent in dispersibility or interaction with polylactic acid as a matrix polymer and can improve heat resistance, moldability and mechanical strength of the polylactic acid; and a resin composition containing the functional filler. The functional filler of the present invention is characterized in including a raw material filler and polylactic acid, wherein a surface or end the raw material filler is modified by the polylactic acid.Type: GrantFiled: November 30, 2010Date of Patent: January 15, 2013Assignee: Dai-ichi Kogyo Seiyaku Co., Ltd.Inventors: Masahiro Satoh, Fengzhe Jin, Yoshikazu Kondo
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Patent number: 8349955Abstract: Toughened, plasticized poly(hydroxyalkanoic acid) polymer compositions comprising poly(trimethylene ether) glycol and ethylene ester copolymers are provided.Type: GrantFiled: September 24, 2010Date of Patent: January 8, 2013Assignee: E I du Pont de Nemours and CompanyInventor: Julius Uradnisheck
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Publication number: 20130005922Abstract: Yarns comprising fibers comprising a fluorinated polyester blend are prepared by melt blending a fluorovinyl ether functionalized polyester with a non-fluorinated polyester. The fluoroether functionalized polyester can be a homopolymer or a copolymer. The yarns and fibers, and the textile and carpet goods produced therefrom, exhibit durable soil, oil, and water repellency.Type: ApplicationFiled: December 28, 2011Publication date: January 3, 2013Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Neville Everton Drysdale, Fredrik Nederberg
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Publication number: 20130005921Abstract: A fluorinated polyester blend is prepared by melt blending a fluorovinyl ether functionalized polyester with a non-fluorinated polyester. The fluoroether functionalized polyester can be a homopolymer or a copolymer. The blend is useful for preparing fibers, yarns, fabrics, garments, carpets, and other shaped articles. The shaped articles exhibit durable soil, oil, and water repellency.Type: ApplicationFiled: December 28, 2011Publication date: January 3, 2013Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Neville Everton Drysdale, Fredrik Nederberg
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Publication number: 20120328523Abstract: Polyhydroxyalkanoates (PHAs) from which pyrogen has been removed are provided. PHAs which have been chemically modified to enhance physical and/or chemical properties, for targeting or to modify biodegradability or clearance by the reticuloendothelial system (RES), are described. Methods for depyrogenating PHA polymers prepared by bacterial fermentation processes are also provided, wherein pyrogens are removed from the polymers without adversely impacting the polymers' inherent chemical structures and physical properties. PHAs with advantageous processing characteristics, including low melting points and/or solubility in non-toxic solvents, are also described. The PHAs are suitable for use in in vivo applications such as in tissue coatings, stents, sutures, tubing, bone, other prostheses, bone or tissue cements, tissue regeneration devices, wound dressings, drug delivery, and for diagnostic and prophylactic uses.Type: ApplicationFiled: July 10, 2012Publication date: December 27, 2012Inventors: Simon F. Williams, David P. Martin, Tiliman Gerngross, Daniel M. Horowitz
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Patent number: 8337991Abstract: An object of the present invention is to provide a polylactic acid composition having specific thermal characteristics and gas barrier properties, and to obtain a molding comprising a polylactic acid composition of PLLA and PDLA capable of forming a polylactic acid stretched film or other molding having superior surface smoothness, transparency, heat resistance and toughness, and the constitution thereof is characterized by being a molding comprising a polylactic acid composition in which the peak in DSC measurement during cooling (at a rate of 10° C./min) after allowing to remain at 250° C. for 10 minutes is 30 mJ/mg or more, and preferably comprising a polylactic acid composition such that, in measurement during the DSC 2nd heating (cooling at a rate of 10° C./min after allowing to remain at 250° C. for 10 minutes followed by reheating from 0° C. at a rate of 10° C./min), the peak ratio (peak 1/peak 2) of the peak when Tm is 150 to 180° C. (peak 1) to the peak when Tm is 200 to 240° C. (peak 2) is 0.Type: GrantFiled: May 31, 2007Date of Patent: December 25, 2012Assignee: Tohcello Co., Ltd.Inventors: Junichi Narita, Hiroyuki Wakai
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Publication number: 20120322155Abstract: The present invention is directed to a novel biocompatible polymer that may be used in tissue engineering. More specifically, the specification describes methods and compositions for making and using a citric acid copolymers.Type: ApplicationFiled: August 28, 2012Publication date: December 20, 2012Applicant: NORTHWESTERN UNIVERSITYInventors: Guillermo Ameer, Jian Yang, Antonio Roy Webb
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Publication number: 20120322952Abstract: Resins derived significantly from renewable or recyclable starting materials may be formed from the reaction product of a monomer blend that includes an ethylenically unsaturated macromonomer and at least one other ethylenically unsaturated monomer, which may be acid functional. The ethylenically unsaturated macromonomer may be derived from the reaction of an acid functional intermediate, which may be the acidolysis reaction product of an engineered polyester and an acid or anhydride functional material with an hydroxyl-functional, amine-functional, or epoxy functional reactant, optionally in the presence of a polyacid, to yield a resin intermediate, which may subsequently be reacted with an ethylenically unsaturated coupling agent to yield the macromonomer. The resins described herein are useful in generating low VOC acrylic alkyd coatings. Methods of producing water reducible resins are also described.Type: ApplicationFiled: September 6, 2012Publication date: December 20, 2012Applicant: THE SHERWIN-WILLIAMS COMPANYInventors: Kimberly A. Koglin, James K. Marlow, Philip J. Ruhoff, Richard F. Tomko
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Publication number: 20120322951Abstract: This invention relates to a miscible polymer blend comprising: (a) an aliphatic-aromatic polyester comprising 70 to 100 mole % terephthalic acid residues; and 75 to 100 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and (b) at least one aliphatic polyester comprising cyclohexanedicarboxylic acid residues; and 75 to 100 mole % cyclohexanedimethanol residues.Type: ApplicationFiled: June 17, 2011Publication date: December 20, 2012Applicant: Eastman Chemical CompanyInventors: Wesley Raymond Hale, Gary Michael Stack
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Patent number: 8334348Abstract: Process for the modification of a polymer or copolymer having the following general structure for one or more of the repeating units: (1) wherein n is an integer, m is an integer in the range 0 to 6, and R is selected from hydrogen, substituted or unsubstituted C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 aralkyl, and C7-C20 alkaryl, which groups may include linear or branched alkyl moieties; the optional one or more substituents being selected from the group consisting of hydroxy, alkoxy, linear or branched alk(en)yl, aryloxy, halogen, carboxylic acid, ester, carboxy, nitrile, and amido groups, which process involves contacting the polymer or copolymer with a cyclic organic peroxide under conditions whereby at least some of said peroxide is decomposed. This process results in a (co)polymer with a high degree of branching but free of gel formation.Type: GrantFiled: February 22, 2007Date of Patent: December 18, 2012Assignee: Akzo Nobel N.V.Inventors: Andreas Herman Hogt, Wilhelm Klaas Frijlink
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Publication number: 20120315476Abstract: An adhesive composition includes 100 parts by weight of a (meth)acrylate copolymer including 0 to less than 0.5 parts by weight of a carboxyl group containing monomer, 0.6 to 9 parts by weight of a hydroxyl group containing (meth)acrylic monomer, and 90.5 to 99.4 parts by weight of a (meth)acrylic acid ester monomer, and having a weight average molecular weight of 100,000 g/mol to less than 1,000,000 g/mol; and 0.1 to 5 parts by weight of a carbodiimide cross-linking agent.Type: ApplicationFiled: June 8, 2011Publication date: December 13, 2012Inventors: Hiroshi OGAWA, Tatsuhiro Suwa, Cheong Hun Song
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Publication number: 20120316294Abstract: An adhesive composition includes 100 parts by weight of a (meth)acrylate copolymer having a weight average molecular weight of 1,000,000 to 2,000,000 g/mol; and 0.05 to 5 parts by weight of a carbodiimide cross-linking agent.Type: ApplicationFiled: June 8, 2011Publication date: December 13, 2012Inventors: Hiroshi OGAWA, Tatsuhiro Suwa, Cheong Hun Song
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Publication number: 20120308532Abstract: There is disclosed a composition formed by a reaction of at least one component A and at least one component B, wherein component A is selected from the group consisting of a compound comprising at least two thiol-groups and a disulfide derivative of a compound comprising at least two thiol groups, and wherein component B is a compound comprising at least two vinyl groups, for the manufacture of an implant for the treatment of a bone fracture. Advantages include that the adhesive patch formed by the composition will be solid in body fluid upon curing and will exhibit excellent mechanical strength. Advantages include that the composition is biocompatible, the material can be applied in small and inaccessible areas, the process requires less surgeon training, it solves drawback with open surgery, and it is possible to use cost effective materials and methods in the process.Type: ApplicationFiled: October 19, 2010Publication date: December 6, 2012Applicant: PROPPABORT ABInventors: Anders Hult, Michael Malkoch, Hans Von Holst, Axel Nordberg