Abstract: Novel biodegradable polyesteramides derived from optionally functionalized diacids and optionally functionalized diamines or from compounds having both optionally functionalized acid and optionally functionalized amine moieties, their preparation, and absorbable surgical articles fabricated therefrom, such as monofilament and multifilament sutures, films, sheets, plates, clips, staples, pins, screws, stents, stent coatings, packaging materials, and other implantable surgical devices, and the like, are described herein.

Abstract: Disclosed is a method of removing a residual catalyst metal compound from a polymer solution. The method comprises the steps of: a) mixing a solution in which at least one organic nitrogen compound is dissolved in a polar solvent and the polymer solution to precipitate a chelate compound of the organic nitrogen compounds and the residual catalyst metal compound, b) adding the polar solvent to the solution mixture to dissolve a chelate compound and to precipitate a polymer, and c) filtering the precipitated polymer. After the polymer polymerization is completed, an organic nitrogen compound solution is added to perform a chelate reaction with the residual catalyst metal compound in a solution phase, and the polar solvent is added to precipitate the polymer so that only polymer precipitates are filtered while an additional filtration process in respect to the chelate compound is not performed to easily remove the residual catalyst metal compound.

Abstract: The invention relates to a method for continuously producing copolyamides with melting points greater than approximately 265° C. According to the invention, in a continuous process, partially aromatic and partially crystalline polyamides of the following chemical systems with defined molar percentages of the individual components are produced during the synthesis of polymers: 30 to 50 mol % of aromatic dicarboxylic acids, which are derived from terephthalic acid; 30 to 50 mol % of aliphatic diamines, which are derived from hexamethylenediamine or of cycloaliphatic diamines having at least 6 C atoms, and; 0.5-25 mol % of aromatic diamines or cyclic diamines with at least 6 C atoms. The sum of all polymer-forming components add up to a composition of 100 mol %, and a stoichiometric ratio between amines and carboxylic acids exists.

Abstract: A microfluidic system for performing interfacial reactions can comprise at least one pump in fluid communication with a tube. A first fluid is injected into the tube so that its flow is laminar and continuous. A second fluid is injected in discrete amounts into the tube into the stream or flow of the first fluid. In other embodiments, discrete amounts of the second fluid are introduced into the channel first, then the first fluid is injected so that it creates a region of substantially laminar fluid flow around the discrete amounts of the second fluid. After the two fluids are in contact, a reaction occurs. The system can be configured so that the second fluid solidifies to form a capsule around the first fluid or vice versa. Other interfacial reactions also can be accomplished using the disclosed microfluidic systems and methods.

Abstract: A resin composition containing a polymer comprising a repeating unit having a spiro structure and/or a cardo structure. The resin composition has superior heat resistance and is utilized to produce an optical film and an image display.

Abstract: It is a main object of the present invention to provide a polyimide precursor and a polyimide precursor resin composition, which precursor being easy to synthesize, available at low cost, excellent in storage and capable of giving polyimide that is low in impurities after imidization, irrespective of the chemical structure of the finally-obtained polyimide.

Abstract: The present invention is directed to the use polycyclic diamines. These diamines, when polymerized with dianhydrides, and optionally other non-polycyclic diamines are used to form new polyamic acids. The polyamic acids can be imidized to form a new class of useful polyimide resins and polyimide films, particularly in electronics type applications.

Abstract: A method of forming a surface layer that includes a hydroxyl polymer on a substrate coating on a medical device is provided.

Abstract: The present invention relates to the field of polymer chemistry and more particularly to multiblock copolymers and methods of preparing the same.

Abstract: Block poly(trimethylene-ethylene ether) glycols are disclosed. The block poly(trimethylene-ethylene ether) glycols can be prepared by the polycondensation of 1,3-propanediol reactant and polyethylene glycol reactant. The block poly(trimethylene-ethylene ether) glycols can be used in breathable membranes, synthetic lubricants, hydraulic fluids, cutting oils, motor oils, surfactants, spin-finishes, water-borne coatings, laminates, adhesives, packaging, films and foams, fibers and fabrics.

Abstract: The invention relates to a polyimide resin polymer which contains at least one repeating unit selected from those of formula (A-1) and formula (A-2) below as polymerization units, wherein P1, P2, Q1, and Q2 are as defined in the specification. The polymer of the invention can be used as an alignment material in liquid crystal displays.

Abstract: Cyclic alkyl, particularly cyclohexyl, substituted glycolides and polylactides are described. The polylactides have a high glass transition temperature and improved clarity.

Abstract: The invention relates to the use of polyamide 11 as an internal coating for a gas transport pipeline to reduce pressure loss.

Abstract: The present invention relates to a photosensitive, aqueous alkaline solution-soluble polyimide resin (A) obtained by reacting a polyimide resin (a) which can be obtained by a tetracarboxylic acid dianhydride with a diamine compound with an energy ray-curing type aqueous alkaline solution-soluble resin (b); the resin has excellent photosensitivity obtained by mixing with a photopolymerization initiator and the like; the obtained cured products can be photosensitive resin compositions excellent in flexibility, low warping property, adhesion properties, solvent resistance, acid resistance, heat resistance, gold plating resistance and the like.

Abstract: A polyamide having a structure represented by the chemical formula (1): wherein m and n represent an integer satisfying m?1, n?1, 2?(m+n)?150, 0.3?m/(m+n)?0.9, R1 and R2 represent at least one monovalent organic group containing a photopolymerizable unsaturated bond, X1 represents at least one tetravalent aromatic group, X2 represents at least one trivalent aromatic group, Y1 and Y2 represent at least one divalent organic group, and Z represents at least one monovalent organic group selected from mono-substituted amino and imido groups.

Abstract: A crystalline polyamide 6 in a compounding extrusion process to make wood flour-polyolefin composite. The wood plastic composite pellet and can be post-blended with reinforced polyolefin pellets in an injection molding step to produce hybrid fibrous composites. The resulting compatibilization in the hybrid fibrous composites gives molded parts having enhanced mechanical properties at greatly reduced temperatures. There is wide variety of molded parts that can be made by varying the blend ratio of the wood plastic compounded product with or without and glass fiber reinforced pellets in the injection molding step.

Abstract: The present invention provides manufacturing of and the use of novel polycarbamates and polycarbamides and their condensation reaction products formed by reacting with formaldehyde as wood composite binder resins and in other applications. These resins have thermosetting capabilities and usefulness as binders for wood and other materials with superior resin properties of low cost, colorlessness, exceptionally good binding, and fast curing characteristics, as well as very low formaldehyde emissions. The newly-designed and synthesized novel starting materials for the thermosetting resins of the present invention are diethylene tricarbamide and various polycarbamates derived from corresponding polyols.

Abstract: The invention relates to biochemical synthesis of 6-amino caproic acid from 6-aminohex-2-enoic acid compound or from 6-amino-2-hydroxyhexanoic acid, by treatment with an enzyme having ?,?-enoate reductase activity towards molecules containing an ?,?-enoate group and a primary amino group. The invention also relates to processes for obtaining suitable genetically engineered cells for being used in such biotransformation process, and to precursor fermentation of 6-amino caproic acid from intermediates leading to 6-amino caproic acid. Finally, the invention relates to certain novel biochemically produced compounds, namely 6-aminohex-2-enoic acid, 6-aminohexanoic acid, as well as to caprolactam produced therefrom and to nylon-6 and other derivatives produced from such biochemically produced compounds or caprolactam.

Abstract: This invention relates to a novel polyimide silicone having an alcoholic hydroxyl group and a process for the preparation thereof. The polyimide of the invention having a primary alcoholic hydroxyl group is represented by the following general formula (1), wherein X represents a tetravalent organic group, Y represents a divalent group having at least one monovalent group selected from the group consisting of a phenolic hydroxyl group and a carboxyl group, with at least one being a divalent organic group having an alcoholic hydroxyl group, Z represents a divalent organic group, W represents a divalent organic group having an organosiloxane structure, k is a positive number, and each of m and n is equal to 0 (zero) or a positive number, with 0.1?k/(k+m+n)?1, 0?m/(k+m+n)?0.8, 0?n/(k+m+n)?0.8.

Abstract: An aromatic polyanhydride comprising a repeating unit having the structure is disclosed, wherein Ar and R are selected so that the aromatic polyanhydride hydrolyzes to form a therapeutic salicylate, another non-steroidal anti-inflammatory, an antifibrotic aminobenzoate, or a vasoconstricting phenylethanolamine. Implantable medical devices, such as scaffolding implants for tissue reconstruction, drug delivery systems prepared from the aromatic polyanhydrides, as well as therapeutic dosage forms and treatment methods are also disclosed.

Abstract: Described is a method for dissolving PPTA or copolymers thereof in sulfuric acid using a twin screw extruder having transporting, mixing, and kneading elements with an entering zone, an intermediate zone, a mixing zone, a negative transport zone, a degassing zone, and a pressure build-up zone.

Abstract: The present invention relates to: Compounds of formula (I) consisting of a cyclic polymer core A and groups -L-X attached to said core A-(L-X)n (I) wherein A denotes a cyclic polymer which is comprised of 3 or 4 identical monomers which are connected by amide bonds; L may be present or not and if present is that same or different and denotes a linker moiety, X is the same or different and denotes a chelator; and n denotes an integer of 3 or 4; Compound of formula (II) consisting of a cyclic polymer core A and groups -L-X? attached to said core A-(L-X?)n (H) wherein A denotes a cyclic polymer which is comprised of 3 or 4 identical monomers which are connected by amide bonds; L may be present or not and if present is that same or different and denotes a linker moiety, X is the same or different and denotes a paramagnetic chelate consisting of a chelator X and a paramagnetic metal ion M; and n denotes an integer of 3 or 4; And compositions comprising compounds of formula (II) and their use as contrast agents in

Abstract: The invention relates to low extractable coatings, varnishes, adhesives or inks obtained with a radiation curable composition comprising amino(meth)acrylates obtained from the reaction of a primary and/or secondary amine (A) with a (methacrylated ethoxylated and/or propoxylated polyol (B) having a degree of alkoxylation of at least 4.

Abstract: The invention relates to compounds of formula (I) which contain aldimine, and to the use thereof. Said compounds which contain aldimines are characterised in that they are odour-less and during hydrolysis the odour-free aldehydes are separated. They are used, therefor, as sources for aldehydes. They can also be used in cross-linking reactions.

Abstract: The purposes of the present invention are to provide a paving material which is easy to be handled, has less restriction on the conditions of execution of work, decomposes fast, and is superior in durability, and a method for construction of paved body using the paving material. The purposes are attained by providing a paving material and a method for construction of paved body using the same, said paving material comprises at least binder emulsion for pavement, non-water soluble epoxy resin, and amine compound(s) a hardener thereof, and is prepared by mixing these three ingredients at the time of the execution of work, at the scene of the execution of work. The purposes are also attained by providing binder emulsion for pavement comprising an amine compound(s) that is a hardener of epoxy resin and the amine compound comprises at least polyaminoamido.

Abstract: The invention relates to a method and compositions for producing a hydrophilic coating on a surface of a solid material. The method comprises a cleaning step and a coating step. The cleaning step may be preceded by an initial cleaning step and it may optionally be succeeded by a preconditioning step prior to the coating step. The cleaning step comprises cleaning and preconditioning a surface of a material by use of a first cleaning fluid composition comprising ceria (CeO2) particles. The coating step comprises treatment by use of a coating fluid composition comprising photocatalytically active nanoparticles of titania (TiO2). An advantage of the method of the invention is that the method may be carried out at temperatures in the range 5 to 50° C. No further heating is required. Thereby, the method may easily be used for treating materials such as windows, furniture, tiles, walls, etc.

Abstract: Processes for preparing diacryl-functional compounds are provided. Processes include reacting AB2 monomers with acryloyl halides, and then further reacting with long-chain, mono-functional aliphatic compounds to form long-chain diacrylates. Further processes include reacting difunctional tic compounds with acrylic acid to form difunctional diacrylate, and diacrylamide compounds.

Abstract: To provide a polyimide film, which has excellent size stability and is suitable for a substrate for fine pitch circuits, especially COF (Chip on Film) being wired at a narrow pitch in the width direction of the film, and a copper-clad laminate using the film as a base material.

Abstract: A novel A1-B-A2 polymer having a number average molecular weight of 10000 to 100000 is provided that has excellent bioabsorbability so as to disappear in a predetermined period of time even when embedded in a large amount in the body, has good kinetic properties, and is useful for preparing tissue anti-adhesion films. This polymer is composed of segments A1 and A2 each having at least either of modified and unmodified amino acid groups, and segment B composed of PEG having a number average molecular weight of 8000 to 50000. The polymer contains both the modified and unmodified amino acid groups, the content of the modified amino acids is 20 to 85 mol % of all the amino acids in the polymer, and segment A1 is bonded to one end of segment B and segment A2 is bonded to the other end of segment B.

Abstract: Photoreactive dendrimers comprising a core portion, branching units and terminal groups, wherein at least one terminal group and/or branching unit is a photoreactive group and wherein the photo reactive groups include preferably cinnamates, coumarins, benzylidenephthalimidines, benzylideneacetophenones, diphenylacetylenes stilbazoles, uracyl, quinolinone, maleinimides, or cinnamylidene acetic acid derivatives and are able to undergo photocyclization, in particular [2+2]-photocyclization.

Abstract: A stationary phase for a liquid chromatograph and process for making is provided. The stationary phase material may have a modified base substrate and a fluorinated carboxylic acid covalently bonded thereto through an amide or ester bond. The stationary phase may have a substantially consistent shape selectivity characteristic with an ?TBN/BaP of less than 1 within a temperature range of at least 10-70° C. Advantageously, a fluorinated stationary phase has a shape selectivity characteristic exhibited with an ?TBN/BaP of less than 1 with a mobile phase having up to at least 30% water. A process for making the stationary involves mixing a substrate material or fluorinated carboxylic acid with a reactive alkylsilane linker and at least one organic solvent to form a first solution. The other of the substrate material or fluorinated carboxylic acid is then added to the first solution, or to a product separated from the first solution, to form a second solution.

Abstract: Polycarbonate is prepared by reactive extrusion on a reactive extruder. A method incorporates the steps of introducing a polycarbonate oligomer, an activated carbonate, and a transesterification catalyst to the extruder through a feed section. The extruder has a feed section, a polycarbonate exit section, and a reaction section between the feed section and the polycarbonate exit section. The reaction section has one or more devolatilization units, wherein each devolatilization unit incorporates an array of vent-conveying sections and conveying sections arranged in a configuration of: (C V C)x(V)n, and/or (V C V)x(C)n. (V) is a vent-conveying section, (C) is a conveying section, x is 1 or more, and n is 1 or 0. The extruder screw in the vent-conveying sections and the conveying sections in each devolatilization unit have conveying elements or conveying elements and mixing elements and no elements that create a melt seal in the devolatilization unit.

Abstract: The present invention relates to a photocurable resin composition, wherein the composition comprises:(A) a polyimide resin having one or more primary alcoholic groups with an alcoholic equivalent equal to or less than 3500, said polyimide being soluble in an organic solvent and having a weight average molecular weight of from 5,000 to 500,000; (B) at least one selected from the group consisting of a condensate of an amino compound modified with formalin, optionally further with alcohol, preferably a melamine resin modified with formalin, optionally further with alcohol, and a urea resin with formalin, optionally further with alcohol, and a phenolic compound having, on average, at least two selected from the group consisting of a methylol group and an alkoxy methylol group, and (C) a photoacid generator capable of generating an acid upon irradiation with light of a wavelength of from 240 nm to 500 nm.

Abstract: According to the present invention, there can be provided a structure preventing the nonspecific adsorption, and a target substance-detecting element and a target substance-detecting kit. A first aspect of the present invention is a structure including: a substrate; and a membrane, present on the surface of the substrate, having a polymer of a monomer represented by the following General Formula (1) or (2): (wherein R represents H or CH3; x represents an integer of 2 to 5, and y represents an integer of 1 to 7, with the proviso that x+y=an integer of 3 to 10), and (wherein R1=H or CH3, and R2 represents O or NH; a represents an integer of 2 to 5, and b represents an integer of 1 to 7, with the proviso that a+b=an integer of 3 to 10.

Abstract: A process for preparing a polyamide by reacting a mixture which comprises a monomer which has a nitrile group and has at least one other functional group capable of forming a carboxamide group, and comprises water, in the presence of titanium dioxide as catalyst, which comprises using titanium dioxide whose BET surface area, determined to the German standard DIN 66 131 volumetrically by the multipoint method, is in the range from 5 to 35 m2/g.

Abstract: Dendrimers comprising N-acyl urea terminal moieties are described herein. The dendrimers can be used, for example, in the treatment of arthritis.

Abstract: The present invention is related to a polyimide, which has high ionic conductivity and good structural stability, does not decompose even under low humidity, and is inexpensive, and a polymer electrolyte and a fuel cell using the same.

Abstract: A plurality of micron-size solid particles is described herein that includes at least one polyamide compound, wherein the particles comprise a diameter in the range of about 1 micron to about 1000 microns, and wherein at least some of the plurality of particles are substantially transparent. In addition, a plurality of micron-size solid particles is described herein that includes at least one polyamide compound, wherein the particles comprise a diameter of less than about 4 microns.

Abstract: The present invention relates to polyamide powders suitable for cosmetic applications are described which have a pH of 4.0 to 7.0, cosmetic compositions containing the polyamide powders and processes of making the same.

Abstract: Hyperbranched polymers having a plurality of at least two different types of functional groups are described. Specific embodiments include hyperbranched polymers having functional groups of a first type that are substantially uniformly distributed throughout the hyperbranched polymer molecule and a second type of functional group that is substantially uniformly distributed at the terminals of the hyperbranched polymer molecule. The hyperbranched polymers having different types of functional groups are synthesized by reacting one or more monomers having functional groups that are capable of reacting during a set of polymerization conditions to form a hyperbranched polymer, wherein at least one of the monomers contains latent functional groups that are not reactive during polymerization.

Abstract: Copolymers (A) containing lateral, primary and/or secondary carbamate groups (a12) and groups (a31) which can be activated with actinic radiation, preparable by I. in a first process step copolymerizing (a1) a monomer containing (a11) a group of the general formula I: CH2?C(R)C(O)—O—, ??(I) in which the variable R is a hydrogen atom, a halogen atom, a nitrile group or an alkyl group having 1 to 10 carbon atoms, and (a12) a primary and/or secondary carbamate group, and (a2) a monomer containing (a21) a free-radically or ironically polymerizable, olefinically unsaturated double bond and (a22) a reactive functional group which is not reactive with the carbamate groups (a12) and is not polymerizable with the double bond (a21), to give the copolymer (a1/a2), and II.

Abstract: A gear composed of a polymer blend or a copolymer of PA66 and PA6 which contains a part having a PA66 molecular structure and a part having a PA6 molecular structure in a weight ratio of PA66/PA6=99.9/0.1 to 95.0/5.0 is excellent in durability as well as heat resistance and dimensional stability. A speed reduction gear using the gear has a reduced size, and can be used under a higher torque without a torque increase due to dimensional change of the gear. An electric power steering apparatus using the speed reduction gear has a reduced size, and can be used for a larger automobile.

Abstract: A polymer compound comprising a repeating unit of the following formula (1) and which is useful as a light emitting material or charge transporting material and excellent in heat resistance, fluorescent intensity and the like: (wherein, ring A and ring B represent each independently an aromatic hydrocarbon ring optionally having a substituent, at least one of ring A and ring B is an aromatic hydrocarbon ring composed of a plurality of condensed benzene rings, Rw and Rx represent each independently a hydrogen atom, alkyl group, alkoxy group or the like, and Rw and Rx may mutually bond to form a ring).

Abstract: The present invention relates to a radiation curable and developable polyurethane which is characterized by having a carboxy group in its main chain and a acryloyl group in its side chain and comprising the following repeat units (I), (II), and (II) in a random arrangement: wherein R1, R2, R3, R4, and T are defined in the specification. The polyurethane has a weight molecular weight measured by GPC in a range of from 3,000 to 400,000; an acid value in a range of from 5 to 120 mgKOH/g. The present invention also relates to a radiation curable and developable composition containing the polyurethane.

Abstract: A polymer includes a first type of repeat unit represented by Formula I: where X is selected from —CH2—, —CH2—CH2—, or —O—; m is an integer from 0 to about 5; and where for the first type of repeat unit one of R1, R2, R3, and R4 is one of a maleimide containing group and for the second type of repeat unit one of R1, R2, R3, and R4 is a hindered aromatic group, a C8 or greater alkyl group, a C4 or greater halohydrocarbyl or perhalocarbyl group, a C7 or greater aralkyl group, or a heteroatom hydrocarbyl or halohydrocarbyl group.

Abstract: Disclosed herein is an LC aligning agent using diamine having dendron side chains. In detail, the present invention relates to a composition for an LC alignment film which employs diamine having dendron side chains to produce polyamic acid, followed by imidization. When the LC alignment film is applied to a liquid crystal display device, high heat resistance, high penetration in a visible ray range, excellent alignment, and a high voltage holding ratio are assured. Even though it contains a small amount of functional diamine, a high pretilt angle can be assured. Thus, the pretilt angle is easily controlled and a vertical aligning force is improved.

Abstract: New polyols; oligomers, and polymers made from the polyols; and binders made from the new polyols, oligomers, or polymers that can be used in binders, where the binders typically include one or more polyols, and a polyfunctional acid or a polyfunctional nitrile.

Abstract: A composition of matter for a recording medium in atomic force data storage devices. The composition includes polyimide oligomers having covalently bonded monomers forming a backbone, the oligomer thermally stable to at least 400° C.; one or more covalent bonding cross-linking moieties incorporated into the polyimide oligomer; and one or more hydrogen bonding cross-linking moieties incorporated into the polyimide oligomer. The covalent and hydrogen bonding cross-linking of the polyimide oligomers may be tuned to match thermal and force parameters required in read-write-erase cycles.

Abstract: The present invention relates to a novel diamine, a novel acid dianhydride, and a novel composition containing a polyimide produced from such diamine and acid dianhydride. Specifically, the present invention relates to an acid dianhydride that has a photosensitive group bonded through the mediation of an alkylene group or a fluoroalkylene group, a diamine that has a reactive group bonded through the mediation of an alkylene group or a fluoroalkylene group, and a polyimide composition that contains a novel polyimide having at least one of such acid dianhydride residue and diamine residue in a molecule thereof.

Abstract: Polyamide whose main chain contains a chemically bound N-alkyllactam, and processes for preparing such a polyamide and fibers, films and moldings comprising such a polyamide.