Abstract: The present invention provides a biocompatible prepolymer comprising hydrophilic and hydrophobic segments, wherein the hydrophobic segments have at least one ethylenically unsaturated functional group and at least 5% of the segments have two or more ethylenically unsaturated functional groups and water. The invention further provides a biocompatible prepolymer composition comprising hydrophilic and hydrophobic prepolymers, wherein at least one of the hydrophobic prepolymers has at least one ethylenically unsaturated functional group and at least 5% of the prepolymers have two or more ethylenically unsaturated functional groups and water. The invention further provides use of the prepolymer or prepolymer compositions of the invention in biomedical applications such as tissue engineering, as bone substitutes or scaffolds, and in wound treatment.

Abstract: 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).

Abstract: Disclosed is a new method and compositions from the method consisting of block copolycarbonate/phosphonates that exhibit an excellent combination of flame resistance, hydrolytic stability, high Tg, low melt viscosity, low color and high toughness. Also disclosed are polymer mixtures or blends comprised of these block copolycarbonate/phosphonate compositions and commodity and engineering plastics and articles produced therefrom. Further disclosed are articles of manufacture produced from these materials, such as fibers, films, coated substrates, moldings, foams, adhesives and fiber-reinforced articles, or any combination thereof.

Abstract: Disclosed are random copoly(phosphonate carbonate)s with the high molecular weight and narrow molecular weight distribution exhibiting a superior combination of properties compared to prior art.

Abstract: The invention provides networked polymeric nanofibers having a structure in which amorphous polymeric fibers are branched at multiple sites and having a diameter of from 1 nanometer to 100 nanometers. A solution of a polymer such as polystyrene in a good solvent thereof is rapidly frozen to form a nanoscale phase-separation structure of the polymer and the frozen solvent. The networked polymeric nanofibers can then be obtained upon removing the frozen solvent.

Abstract: In some embodiments, a composition comprises a bisphenol-A polycarbonate, wherein a molded article of the composition has transmission level greater than or equal to 90.0% at 2.5 mm thickness as measured by ASTM D1003-00 and a yellow index (YI) less than or equal to 1.5 as measured by ASTM D1925.

Abstract: To provide a polycarbonate resin composition excellent in the surface hardness, the heat resistance, the moldability and the flame retardancy. A polycarbonate resin composition comprising at least a polycarbonate resin (a) and a polycarbonate resin (b) having structural units different from the polycarbonate resin (a), which satisfies the following requirements: (i) the pencil hardness of the polycarbonate resin (a) as specified by ISO 15184 is higher than the pencil hardness of the polycarbonate resin (b) as specified by ISO 15184; (ii) the glass transition point Tg(a) of the polycarbonate resin (a) and the glass transition point Tg(b) of the polycarbonate resin (b) satisfy the relation of the following (Formula 1): Tg(b)?45° C.<Tg(a)<Tg(b)?10° C.??(Formula 1) and (iii) the pencil hardness of the polycarbonate resin composition as specified by ISO 15184 is higher by at least two ranks than the pencil hardness of the polycarbonate resin (b) as specified by ISO 15184.

Abstract: To provide a polycarbonate resin composition excellent in surface hardness and impact strength. A polycarbonate resin composition comprising at least a polycarbonate resin (a) and a polycarbonate resin (b) having structural units different from the polycarbonate resin (a), which satisfies the requirements: (i) the pencil hardness of the polycarbonate resin (a) as specified by ISO15184 is higher than the pencil hardness of the polycarbonate resin (b) as specified by ISO15184; (ii) the weight ratio of the polycarbonate resin (a) to the polycarbonate resin (b) in the polycarbonate resin is from 1:99 to 45:55; (iii) the pencil hardness of the polycarbonate resin composition as specified by ISO15184 is higher by at least two ranks than the pencil hardness of the polycarbonate resin (b) as specified by ISO15184; and (iv) the Charpy impact strength of the polycarbonate resin composition is higher than the Charpy impact strength of the polycarbonate resin (a).

Abstract: The present invention relates to copolycarbonates having improved surface hardness, processes for the preparation thereof and the use thereof for the production of blends, shaped articles and extrudates.

Abstract: Substrates, optionally coated with an undercoating, having grafted thereto one or more non-fouling materials are described herein. The non-fouling, polymeric material can be grafted to a variety of functionalized substrate materials, particularly polymeric substrates and/or polymeric undercoatings immobilized on a substrate. The compositions described herein are highly resistant protein absorption, particularly in complex media and retain a high degree of non-fouling activity over long periods of time. The compositions described herein may also demonstrate antimicrobial and/or anti-thrombogenic activity. The non-fouling material can be grafted to a functionalized substrate, or optionally from an undercoating on the substrate, preferably without significantly affecting the mechanical and/or physical properties of the substrate material.

Abstract: The present invention provides a thermoplastic resin composition that can have excellent flame retardancy comprising about 100 parts by weight of a base resin including about 30 to about 100% by weight of a polycarbonate-based resin (A); and about 0.1 to about 40 parts by weight of a phosphorus-containing compound in the form of polymer (C). The thermoplastic resin composition can have excellent flame retardancy, can exhibit a balance of properties such as impact strength, heat resistance, flowability, and the like, and can be environment-friendly.

Abstract: Disclosed is a method for activating a solid support material with epoxy groups and for immobilising ligands thereon, utilising phase transfer catalytic conditions. The method permits the introduction of epoxy groups and specific nucleophilic ligands on the support material with a high level of substitution. Furthermore, the invention provides a general method for immobilising a ligand for use in a wide variety of chromatographic separation procedures such as ion exchange chromatography, hydrophobic interaction chromatography (HIC), reverse phase chromatography (RPC), or affinity chromatography.

Abstract: The present invention relates to a polycarbonate resin composition (X) which includes a polycarbonate resin (A) and an aromatic polycarbonate resin (B), the polycarbonate resin (A) including a constitutional unit derived from a dihydroxy compound (a) having, as part of the structure thereof, a site represented by the following formula (1) and a constitutional unit derived from a dihydroxy compound (b) of an aliphatic hydrocarbon, wherein the proportion of the constitutional unit derived from the dihydroxy compound (b) of an aliphatic hydrocarbon based on all constitutional units each derived from a dihydroxy compound in the polycarbonate resin (A) is 45% by mole or more. (The case where the site represented by the formula (1) is part of —CH2—O—H is omitted.

Abstract: The invention is to provide a polycarbonate resin composition having excellent weatherability, transparency, hue, heat resistance, thermal stability, moldability, and mechanical strength and a molded article obtained therefrom. The invention relates to: a polycarbonate resin composition which includes a polycarbonate resin (A) containing constituent units derived from a dihydroxy compound (a) having the portion represented by the following formula (1) as part of the structure thereof and an aromatic polycarbonate resin (B) having a reduced viscosity of 0.50 dL/g or higher; and a molded article obtained from the composition. (The case where the portion represented by the following formula (1) is part of —CH2—O—H is excluded.) [Chem.

Abstract: The present invention relates to a polymer comprising as part of its polymer backbone a moiety of Formula (II): where one of R6 to R10 represents A-O— and one of R6 to R10 represents —O—B and the remainder of R6 to R10 represent H, where A and B represent the remainder of the polymer backbone and may be the same or different.

Abstract: To provide a polycarbonate resin composition having a high Abbe's number, high strength and excellent stainability. Disclosed is a polycarbonate resin composition prepared by blending a polycarbonate resin (A) prepared by forming carbonate bonds in tricyclo[5.2.1.02,6]decanedimethanol with a diester or phosgene, and a weight-averaged molecular weight (Mw) of the polycarbonate resin (A) being equal to or more than 25,000, and a polycarbonate resin (B) prepared by reacting 2,2-bis(4-hydroxyphenyl)propane and phosgene, and weight-averaged molecular weight (Mw) of the polycarbonate resin (B) being equal to or more than 30,000, wherein a ratio thereof, 100×(A)/((A)+(B)), is from 1 to 99% by weight.

Abstract: An environmentally-friendly polylactic acid resin composition includes (A) a mixed resin including (a1) a polylactic acid (PLA) resin and (a2) a polycarbonate resin, and (B) a compatibilizer capable of forming a stereo-complex with the polylactic acid resin. According to the present invention, the polylactic acid resin composition is environmentally-friendly and has excellent appearance and improved welding impact strength, as well as improved mechanical strength and heat resistance. Accordingly, it can be used for manufacturing various molded products requiring heat resistance and mechanical strength, for example electronic parts, office machines, miscellaneous goods, and the like.

Abstract: A bioabsorbable material which is flexible and degradable at a controlled rate, and an in-vivo indwelling device made thereof. The bioabsorbable material is a copolymer composed of an aromatic compound having an ?,?-unsaturated carboxylic group and at least one hydroxyl group as substituents on the aromatic ring, and a polycarbonate or a monomer constituting polycarbonate. Alternatively, it is a copolymer composed of, as the first component, an aromatic compound having an ?,?-unsaturated carboxylic group and at least one hydroxyl group as substituents on the aromatic ring, as the second component, an aromatic compound having an ?,?-unsaturated carboxylic group and at least two hydroxyl groups as substituents on the aromatic ring, and, as the third component, a polycarbonate or a monomer constituting polycarbonate.

Abstract: The present invention discloses a process for preparing di-, tri, or multi-block polyester/polycarbonate (co)polymers by ring-opening polymerisation in the presence of a non-toxic catalyst system in combination with either a linear monohydroxy HO—PC—OR, or a linear telechelic dihydroxy HO—PC—OH, or a star polyhydroxy R—(PC—OH)n end-capped polyester/polycarbonate.

Abstract: The present disclosure relates to block copolymers, methods for their production, and the use of these copolymers in medical devices. In embodiments, the block copolymers may be used in tissue reinforcement including, for example, in hernia repair. The copolymers possess at least one block that is hydrophilic and fast degrading, and at least one other block that is hydrophobic and slower to degrade.

Abstract: The present invention relates to compositions for producing membranes, the compositions comprising at least 0.1% by weight of highly branched polymer, at least 0.5% by weight of linear polymer and at least 30% by weight of solvent. The present invention additionally describes membranes obtainable from the compositions, and methods of producing these membranes.

Abstract: Disclosed are random copoly(phosphonate carbonate)s with the high molecular weight and narrow molecular weight distribution exhibiting a superior combination of properties compared to prior art.

Abstract: A composition comprising a clear thermoplastic blend comprising: (a) a polycarbonate component; and (b) a polyester component comprising (i) a polyester based substantially on 1,4 cyclohexane dimethanol and terephthalic acid monomer units, (ii) copolymers polyester based substantially on 1,4 cyclohexane dimethanol and terephthalic acid monomer units and modified with up to 25 mol % of copolymerizable acid and/or diol monomers, and (iii) combinations thereof. The polycarbonate component and the polyester component are present in sufficient proportions to form a molding composition capable of being molded into an article that exhibits transparency and structural integrity after the article is exposed to a caustic aqueous environment for at least 70 hours. The invention also relates to articles made from the composition, methods for making the compositions, and methods for using articles.

Abstract: Embodiments according to the present invention relate to sacrificial polymer compositions that include polycarbonate polymers having repeat units derived from stereospecific polycyclic 2,3-diol monomers. The sacrificial polymer compositions also include an acid generator that is selected from at least one photoacid generator and/or at least one thermal acid generator. In addition, embodiments according to the present invention relate to a method of forming a structure that includes a three-dimensional space interposed between a substrate and an overcoat layer, and a method of temporarily bonding first and second substrates together, which make use of the polycarbonate polymers.

Abstract: The present invention broadly relates to the field of protein modification, and, more specifically, to conjugates of proteins or analogs thereof to a water-soluble biocompatible polymer and methods of making and using the same.

Abstract: Linear polycarbonate resin virtually free of surface defects that impair the suitability of the resin for demanding optical application is disclosed. Also disclosed is a process for the manufacture of the resin. The surface defects included in the resin are in the form of transparent fluorescing particles, the particle count of which portion that are 15 and 250 ?m in size, is up to 1.8 counts/g, said count being determined by exciting the residue remaining after filtering a solution of said polycarbonate in methylene chloride through a Teflon filter of 5 ?m pore size at a wavelength of 400-440 nm, 25× overall magnification and illumination time of 40 millisec. The polycarbonate is suitable for making films of improved optical properties.

Abstract: Use of a kinked rigid-rod polyarylene of a particular type for its fire resistance properties.

Abstract: The present invention relates to a polylactic acid resin composition. The composition includes about 25 to about 80 parts by weight of a polylactic acid resin, (B) about 20 to about 75 parts by weight of a polycarbonate resin, and (C) about 0.01 to about 5 parts by weight of a chain extender including an amine group, based on about 100 parts by weight of (A)+(B). The polylactic acid resin composition of the present invention is environmentally-friendly and has excellent hydrolysis resistance and simultaneously improved mechanical strength and heat resistance, and accordingly can be used for manufacturing various molded products requiring heat resistance and mechanical strength, for example vehicles, machine parts, electronic parts, office machines, miscellaneous goods, and the like.

Abstract: The present invention provides a method for producing a thermoplastic resin composition, the method comprising a step of melt-kneading 5 to 55 parts by weight of an aromatic polycarbonate resin and 95 to 45 parts by weight of an aromatic polysulfone resin while shearing at a sharing speed of 1,000 to 9,000/sec. By the method, a thermoplastic resin composition excellent heat resistance and transparency can be obtained.

Abstract: Provided is a polycarbonate resin composition having high rigidity, high flowability, high heat resistance, and excellent flame retardancy and molded articles with good appearance using the polycarbonate resin composition. The polycarbonate resin composition comprises 4 to 50 parts by mass of a nonmetallic inorganic filler (B) and 0.01 to 1 part by mass of a phosphate compound (C) relative to 100 parts by mass of a resin mixture (A) which is composed of 60 to 97% by mass of an aromatic polycarbonate resin (a-1) and 40 to 3% by mass of a fatty acid polyester (a-2).

Abstract: The present invention relates to a three-dimensional powder-based production process using powders based on cyclic oligomers, and to moldings produced by this process.

Abstract: The present invention relates to thermoplastic molding compositions comprising the following components: (A1) at least one polyarylene ether having an average of at most 0.5 phenolic end groups per polymer chain, (A2) optionally at least one polyarylene ether having an average of at least 1.5 phenolic end groups per polymer chain, (B) at least one polyarylene sulfide, (C) at least one hyperbranched polymer selected from hyperbranched polycarbonates and hyperbranched polyesters, (D) optionally at least one functionalized polyarylene ether comprising carboxy groups, (E) optionally at least one fibrous or particulate filler, and (F) optionally further additives and/or processing aids. The present invention further relates to a process for producing the thermoplastic molding compositions of the invention, to the use of these for producing moldings, fibers, foams, or films, and to the resultant moldings, fibers, foams, and films.

Abstract: The present invention relates to copolycarbonates having improved surface hardness, processes for the preparation thereof and the use thereof for the production of blends, shaped articles and extrudates.

Abstract: The invention relates to a method for preparing polyhydroxy-urethanes without using a compound having an isocyanate function, and from amino compounds and compounds carrying carbonate functions, in particular cyclic carbonate functions. The invention also relates to a method for preparing aqueous or hydro-organic formulations containing polyhydroxy-urethanes, and to the use of said polyhydroxy-urethanes and of said aqueous or hydro-organic formulations.

Abstract: To provide a polycarbonate resin composition excellent in low-birefringence and environment resistance properties to be used for optical materials such as lenses, films or sheets. Disclosed is a polycarbonate resin composition comprising a polycarbonate resin (A) prepared by forming carbonate bonds in a dihydroxy compound represented by formula (1) with a diester carbonate, and a polycarbonate resin (B) prepared by forming carbonate bonds in 2,2-bis(4-hydroxyphenyl)propane with a diester carbonate or phosgene. In the formula, R1 and R2 each independently represent a hydrogen atom or methyl.

Abstract: Disclosed herein is a method of preparing a polycarbonate composition comprising melt blending a first polycarbonate prepared by interfacial polymerization and having hydroxy end groups that are capped with endcapping groups, with a second polycarbonate prepared by melt polymerization and having hydroxy end groups that are capped with endcapping groups, wherein the second polycarbonate has a lower mole percent of endcapping groups than that of the first polycarbonate; wherein an article having a thickness of 3.2 mm and molded from the polycarbonate composition has a haze of less than 3 according to ASTM D1003-00; and wherein a flat article molded from the polycarbonate composition has a surface charge of ?2 to +2 kV. A polycarbonate composition and complex article prepared according to the method are also disclosed.

Abstract: A composition comprises a surface modified nanoparticle comprising a core comprising a material selected from the group consisting of organic materials, organometallic materials, inorganic materials, metals, metal oxides, and combinations thereof; and a surface branch covalently linked to the core having the general formula (3):

Abstract: The invention relates to a process for extruding plastic compositions, in particular polymer melts and mixtures of polymer melts, above all thermoplastics and elastomers, particularly preferably polycarbonate and polycarbonate blends, also with the incorporation of other substances such as for example solids, liquids, gases or other polymers or other polymer blends with improved optical characteristics, with the assistance of a multi-screw extruder with specific screw geometries.

Abstract: Described is the use of RO• radicals, R being a hydrogen, an alkyl group having 2 to 15 carbons, an acyl group —COR? in which R? represents an alkyl group having 2 to 15 carbons, or an aroyl group —COAr in which Ar represents an aromatic group having 6 to 15 carbons, for the hydroxylation, alkoxylation or oxycarbonylation of polymer or polymer mixture surfaces, the said polymers consisting in monomeric units of which at least 50% among these are aromatic units and the said RO• radicals being generated by electrochemical or photochemical methods.

Abstract: A resin composition contains (A) an aliphatic polyester as a first polymer, (B) a second polymer having a higher glass transition temperature than the first polymer, and (C) a silicone oil.

Abstract: The present invention relates to structural organosheet-components of hybrid design composed of an organosheet which is reinforced by means of thermoplastics and which is suitable for the transmission of high mechanical loads, where particular flow aids are added to the thermoplastic in order to improve its physical properties.

Abstract: Use of at least one kinked rigid-rod polyarylene of a specific type for its fire resistance properties. Films and coatings consisting of a material comprising the same kinked rigid-rod polyarylene.

Abstract: A resin composition in which a polylactic acid resin (A) 95-5 wt %, an aromatic polycarbonate resin (B) 5-95 wt %, and, with respect to 100 wt parts of the total of the (A) and the (B), at least one compatibilizer selected from a polymer compound containing an acrylic resin or styrene resin unit as a graft (C), a polymer compound to which a glycidyl compound or an acid anhydride is grafted or copolymerized (D) and an oxazoline compound, an oxazine compound and a carbodiimide compound (E) are compounded.

Abstract: Disclosed is a new method and compositions from the method consisting of block copolycarbonate/phosphonates that exhibit an excellent combination of flame resistance, hydrolytic stability, high Tg, low melt viscosity, low color and high toughness. Also disclosed are polymer mixtures or blends comprised of these block copolycarbonate/phosphonate compositions and commodity and engineering plastics and articles produced therefrom. Further disclosed are articles of manufacture produced from these materials, such as fibers, films, coated substrates, moldings, foams, adhesives and fiber-reinforced articles, or any combination thereof.

Abstract: A thermoplastic resin composition includes a thermoplastic resin (A) and a reactive functional group-containing resin (B), which has a specific structure in the morphology of the resin composition observed by transmission electron microscopy tomography, and the relaxation time T1C of each carbon nucleus by the solid NMR measurement of the thermoplastic resin composition containing a polyamide resin is kept in a specific range. The composition is excellent in the balance between contradictory properties such as impact resistance and heat resistance, remarkably exhibits a peculiar viscoelastic behavior not observed in the conventional polymeric materials, and is remarkably excellent in impact energy absorbing performance and vibration energy absorbing performance at the time of high-speed deformation.

Abstract: An injection molded article comprising a polycarbonate composition. The polycarbonate composition is scratch resistant, flame retardant, has a low chlorine and bromine content and is dark colored.

Abstract: The invention relates to silane cross-linking curable compositions, comprising a polymer P with at least two terminal groups of the following formulae (I) and (II) -Am-K1—SiXYZ (I), -Am-K2—SiXYZ (II), and/or two polymers P1 and P2, the polymer P1 having terminal groups of the following formula (I) -Am-K1—SiXYZ (I), and the polymer P2 having terminal groups of the following formula (II) -Am-K2—SiXYZ (II). In said formulae, A represents a bivalent binding group K1 and K2 independently of one another represent a bivalent aliphatic hydrocarbon group with a main chain of between 1 and 6 carbon atoms, the hydrocarbon groups K1, K2 being different, X, Y and Z independently of one another represent a hydroxy group of a hydrolysable group and m stands for 0 or 1.

Abstract: A crosslinker for polymerizing a film-forming material including an alkyl or aromatic compound comprising at least two functional groups reactive with a film-forming resin and at least one pendent group having a nonionic metal coordinating structure. Coating compositions can include a film-forming material and the crosslinker. The coating compositions can be used to coat a substrate, such as a metal substrate. Applied coating layers on substrates can be cured to form coating films.

Abstract: Substrates, optionally coated with an undercoating, having grafted thereto one or more non-fouling materials are described herein. The non-fouling, polymeric material can be grafted to a variety of functionalized substrate materials, particularly polymeric substrates and/or polymeric undercoatings immobilized on a substrate. The compositions described herein are highly resistant protein absorption, particularly in complex media and retain a high degree of non-fouling activity over long periods of time. The compositions described herein may also demonstrate antimicrobial and/or anti-thrombogenic activity.

Abstract: A substrate is provided having a biomolecule immobilised thereon, wherein the biomolecule is connected via an enzyme-cleavable link to a blocking moiety such that cleavage of the link causes removal of the blocking moiety and activation of the biomolecule.