Abstract: A polymer blend including 5 to 95 weight percent of a poly(ester-carbonate-carbonate) comprising 40 to 95 mole percent of ester units comprising low heat bisphenol groups and high heat bisphenol groups, wherein the ester units comprise 20 to 80 mole percent of the low heat bisphenol groups and 20 to 80 mole percent of the high heat bisphenol groups, based on the total moles of ester units in the poly(ester-carbonate-carbonate), and 5 to 60 mole percent of carbonate units comprising the low heat bisphenol groups and the high heat bisphenol groups, wherein the carbonate units comprise 20 to 80 mole percent of the low heat bisphenol groups and 20 to 80 mole percent of the high heat bisphenol groups, based on the total moles of carbonate units in the poly(ester-carbonate-carbonate); and 5 to 95 weight percent of a poly(etherimide), wherein the weight percent of each polymer is based on the total weight of the polymers in the blend, and a molded 0.

Abstract: Thermoplastic polyamide moulding composition consisting of: (A) 30-99.9 percent by weight of at least one polyamide selected from the group consisting of: at least one aliphatic or semiaromatic polyamide, in each case with C:N ratio at least 8; at least one aliphatic or semiaromatic polyamide composed of at least one dicarboxylic acid and of at least one diamine and also optionally a proportion below 50 mol percent based on the entirety of dicarboxylic acids and diamine as 100 mol percent, of lactams and/or aminocarboxylic acids; and mixtures thereof; (B) 0.1-5.0 percent by weight of polyethyleneimine (PEI) or copolymers or derivatives thereof; (C) 0-60 percent by weight of fillers and/or reinforcing materials; (D) 0-5.0 percent by weight of additives; where the entirety of (A)-(D) provides 100% of the thermoplastic polyamide moulding composition, and also uses of such moulding compositions in particular in the context of components bonded to mineral glass.

Abstract: A method of preparing thermoplastic polyester elastomer membrane with high binding strength includes the following steps: (a) Adding a reaction solvent to TPEE powder or granules to prepare a solvent mixture. (b) Adding a modifier to the solvent mixture, and mixing uniformly to prepare a first mixture, the modifier including at least one of o-xylylenediamine, m-xylylenediamine, alpha,alpha?-diamino-p-xylene, 2,3,5,6-Tetrachloro-p-xylene-alpha,alpha?-diamine, and 1,3,5,7-Tetraazatricyclodecane. (c) Adding an initiator to the first mixture, and mixing uniformly to prepare a second mixture. (d) Obtaining a finished product by passing the second mixture through an injection laminating process.

Abstract: A method of extracting underground resources including a step of mixing hydrolysable particles and a proppant to an aqueous dispersion fluid, and introducing the fluid with pressure into an ore chute formed under the ground, wherein as the hydrolysable particles, use is made of spherical particles that include a hydrolysable resin of a weight average molecular weight (Mw) of not less than 5,000 and, specifically, not less than 10,000, and that have an average particle size (D50) in a range of 300 to 1,000 ?m, and a circularity of a short diameter/long diameter ratio of not less than 0.8. The spherical particles have a hyrolysable capability, a circularity and a particle size adapted to the hydraulic fracturing.

Abstract: Method for obtaining biodegradable polyesteretheramide that has a stage of esterification and/or transesterification and amidation reaction, a stage of prepolycondensation, a stage of polycondensation, an optional stage of extraction, a stage of drying and a final stage of extrusion with additives. The method of obtaining PEEA enables better satisfaction of the needs of each client as regards viscosity, composition and additives. It enables reducing the amount of interface product that has lower commercial value and improves the colour of the product, while at the same time provides a more efficient process, ecologically cleaner and safer for all the operatives.

Abstract: A biocompatible, covalently cross-linked, polymer that is obtained by reacting an electrophilically activated polyoxazoline (EL-POX) with a nucleophilic cross-linking agent is disclosed. The EL-POX comprises m electrophilic groups; and the nucleophilic cross-linking agent comprises n nucleophilic groups, wherein the m electrophilic groups are capable of reacting with the n nucleophilic groups to form covalent bonds; wherein m?2, n?2 and m+n?5; wherein at least one of the m electrophilic groups is a pendant electrophilic group and/or wherein m?3; and wherein the EL-POX comprises an excess amount of electrophilic groups relative to the amount of nucleophilic groups contained in the nucleophilic cross-linking agent. Biocompatible medical products and kits comprising the cross-linked POX-polymers are also disclosed.

Abstract: A modified nylon 66 fiber including a first repeating unit derived from adipic acid and hexamethylenediamine, a second monomer unit derived from a diacid or a diamine having a long carbon chain, a third monomer unit derived from a diacid or a diamine having a aromatic ring, and a fourth monomer unit derived from a cyclic diacid or a cyclic diamine is provided. The second monomer unit has 6 to 36 carbon atoms. The third monomer unit has 8 to 14 carbon atoms. The fourth monomer unit has 6 to 10 carbon atoms. Based on a total weight of the modified nylon 66 fiber, a content of the first repeating unit is 78 wt % to 94.8 wt %, a content of the second monomer unit is 0.1 wt % to 1 wt %, a content of the third monomer unit is 5 wt % to 20 wt %, a content of the fourth monomer unit is 0.1 wt % to 1 wt %.

Abstract: Provided is a composition including (A) 65% to 95% of a polyamide mixture, (B) 7% to 30% of at least one impact modifier or of at least one core-shell entity or of a mixture thereof, and (C) 0 to 5% of at least one additive chosen from stabilizers, dyes, plasticizers, fibers, fillers, processing aids or a mixture thereof. The composition may be used, for example, to produce an article by extruding, injection molding, molding or thermoforming.

Abstract: The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound.

Abstract: The present invention provides methods, processes, and systems for the manufacture of three-dimensional articles of polymer materials using 3D printing. A syringe or an inkjet print head prints a solution of prepolymer onto a build plate. The printed prepolymer is exposed to a stimulus whereby the prepolymer is converted to the polymer. After a predetermined time, sequential layers are printed to provide the three-dimensional article. The three-dimensional article can be cured to produce the 3D article made from the final polymer.

Abstract: Novel absorbable polymer blends are disclosed. The blends are useful for manufacturing medical devices having engineered degradation and breaking strength retention in vivo. The blends consist of a first absorbable polymeric component and a second absorbable polymeric component. The weight average molecular weight of the first polymeric component is higher than the weight average molecular weight of the second polymeric component. At least at least one of said components is at least partially end-capped by a carboxylic acid group. Further aspects are medical devices made therefrom.

Abstract: Provided is a well-treatment fluid that reduces a load on the environment. A well-treatment fluid containing a non-ionic polyamino acid derivative including an ?-type or ?-type polyaspartic acid monomer unit represented by Formula (I) and an ?-type or ?-type polyaspartic acid monomer unit represented by Formula (II).

Abstract: The present invention relates to a vinyl chloride polymer having good thermal stability due to the restraint of dehydrochlorination by heat or ultraviolet rays, and a method of preparing the same. The generation of the dehydrochlorination of the vinyl chloride polymer due to heat or ultraviolet rays may be markedly restrained, the thermal stability thereof may be improved, and the discoloration thereof or the modification of the physical properties thereof may be prevented. In addition, a modifier may be introduced to a polymerization process at the end of the polymerization, and high thermal stability may be attained without generating the transformation of the vinyl chloride polymer.

Abstract: Improved breast prostheses, methods of making breast prostheses, and methods of treatment using such breast prostheses are described.

Abstract: A method of forming a polymer matrix composite using a soluble derivative of a poly (aryl ether ketone) (PAEK). The method includes mixing a starting PAEK polymer with a solvent and an acid, said solvent being selected from a group consisting of diethylether, tetrahydrofuran (THF), dioxin, and chlorinated solvents; reacting the PAEK mixture with a Lewis acid and a thiol compound in amounts effective to form a poly (aryl ether thioacetal) compound which comprises at least one thioacetal group; and impregnating a plurality of fibers in a solution comprising said poly (aryl ether thioacetal) compound.

Abstract: The invention relates to a liquid crystal alignment agent which provides a polymer composition (A), a solvent (B), and a poly(oxyalkyleneglycol)dialkylether compound (C); wherein the number average molecular weight of the poly(oxyalkyleneglycol)dialkylether compound (C) is from 250 to 2000. The invention also provides a liquid crystal alignment film made by the liquid crystal alignment agent as mentioned above and a liquid crystal display element which provides the liquid crystal alignment film, and the liquid crystal display element has high voltage holding rate and low ion density.

Abstract: Lysine-based polymers, particularly copolymers of lysine and maleic acid, are useful as coagulants for clarification of wastewaters, including produced waters from oils sands mining operations. They can be advantageously used in combination with commercial coagulants, and in combination with flocculants. Such combinations may include dry blends. Also described are methods of preparation of lysine homopolymers and copolymers.

Abstract: The present invention provides methods, processes, and systems for the manufacture of three-dimensional articles of polymer materials using 3D printing. A syringe or an inkjet print head prints a solution of prepolymer onto a build plate. The printed prepolymer is exposed to a stimulus whereby the prepolymer is converted to the polymer. After a predetermined time, sequential layers are printed to provide the three-dimensional article. The three-dimensional article can be cured to produce the 3D article made from the final polymer.

Abstract: The present invention provides a hemostatic composite sponge comprising a porous matrix of a biomaterial and a material enhancing the adherence of said sponge to the applied tissue stably associated with at least one surface of said sponge, a method of producing these sponges and their use in hemostasis.

Abstract: The present invention provides a novel catalyst of formula (I): wherein M is selected from Zn(H), Co(II), Mn(II), Mg(II), Fe(II), Cr(III)-X or Fe(III)-X, and the use thereof in polymerizing carbon dioxide and an epoxide.

Abstract: A non-leaching mediator may include a polymer comprising the general formula (VIII): and salts thereof, where R? is an organic group, m is 0 or 1, n is about 9, and x and y independently are an integer from 1 to 10,000.

Abstract: Described is the preparation of sulfonated polyoxadiazole polymers with a high degree of sulfonation and good flammability properties. The polymers are useful in articles such as fibers.

Abstract: The present invention relates to hair treatment agents containing a synergistic combination of selected fatty acid amides and oil bodies selected from ester oils and vegetable oils.

Abstract: Hair treatment agents include a synergistic combination of selected fatty acid amides and selected silicones.

Abstract: The present invention relates to hair treatment agents including a synergistic combination of selected fatty acid amides and further selected hydroxycarboxylic acids.

Abstract: Hair treatment agents include a synergistic combination of selected fatty acid amides and further selected hydroxycarboxylic acids.

Abstract: A liquid crystal display panel, including: a pixel electrode formed on a first substrate; an alignment layer formed on the pixel electrode, wherein the alignment layer includes an alignment layer material and aligns first liquid crystal molecules in a direction substantially perpendicular to the pixel electrode; and a photo hardening layer formed on the alignment layer, wherein the photo hardening layer includes a photo hardening layer material and aligns second liquid crystal molecules to be tilted with respect to the pixel electrode, wherein the alignment layer material and the photo hardening layer material have different polarities from each other.

Abstract: The present invention relates to a polylactic acid resin which is environment-friendly and is useful as a packaging material due to its properties including excellent heat resistance and flexibility, and a packaging film comprising the same. The polylactic acid resin comprises a hard segment comprising a polylactic acid repeating unit; and a soft segment comprising a polyurethane polyol repeating unit in which polyether polyol repeating units are linearly linked via a urethane bond, wherein the polylactic acid resin has an organic carbon content (% Cbio) from the biomass source of 60 wt % or more.

Abstract: The present invention relates to a polyester resin including a diol constitutional unit and a dicarboxylic acid constitutional unit as main constitutional units, in which the diol constitutional unit contains from 70 to 95% by mol of a constitutional unit derived from ethylene glycol and from 5 to 30% by mol of a constitutional unit derived from tricyclodecane dimethanol or pentacyclopentadecane dimethanol, and the dicarboxylic acid constitutional unit contains 50% by mol or more of a constitutional unit derived from a naphthalenedicarboxylic acid, and an optical lens obtained by molding the polyester resin. According to the present invention, there are provided a polyester resin that has a high refractive index and a low Abbe number and can be molded into a good optical lens, and an optical lens obtained by molding the polyester resin.

Abstract: A method of producing a poly(lactic acid) resin includes carrying out direct polycondensation using lactic acid as a main raw material to prepare a crystallized prepolymer having a weight average molecular weight of 5,000 to 25,000, an enthalpy of fusion ?Hm of 50 to 65 J/g and an acid value A mol/ton satisfying (1) below: 450/(Mw/10,000?0.14)<A<950/(Mw/10,000?0.14)??(1) (wherein Mw represents weight average molecular weight of the crystallized prepolymer); and subjecting the crystallized prepolymer to solid-phase polymerization.

Abstract: The present disclosure relates to a polyimide-graphene composite material and a method for preparing same. More particularly, it relates to a polyimide-graphene composite material prepared by adding modified graphene and a basic catalyst during polymerization of a polyimide precursor so as to improve mechanical strength and electrical conductivity and enable imidization at low temperature and a method for preparing same.

Abstract: The present invention relates to a biodegradable carrier for carrying a radioisotope, which is formed from at least one biodegradable polymer selected from the group consisting of poly(lactic-co-glycolic acid) (PLGA), poly(lactic acid) (PLA), poly(?-caprolactone) (PCL), chitosan, poly(?-glutamic acid) (PGA), and polyethylene glycol (PE) in which its hydroxyl group is substituted with an amino group and grafted with tetraazocyclododecanetetraacetic acid monosuccinimide ester (DOTA-NHS), in which nitrogen atoms contained in the DOTA-NHS are provided for coordinating with a radioisotope. The present invention also relates to a kit which includes a first container containing the biodegradable carrier for carrying a radioisotope according to the present invention and a second container containing a radioisotope.

Abstract: This invention relates to compositions, and related compounds and methods, of conjugates of immunomodulatory agents and polymers or unit(s) thereof. The conjugates may be contained within synthetic nanocarriers, and the immunomodulatory agents may be released from the synthetic nanocarriers in a pH sensitive manner.

Abstract: The invention provides a process for the synthesis of a polycarbonate, the process comprising the step of reacting carbon dioxide with at least one epoxide in the presence of a catalyst of formula (I) and a chain transfer agent. The invention also provides a polymerization system for the copolymerization of carbon dioxide and at least one epoxide comprising a catalyst of formula (I) and a chain transfer agent, polycarbonates produced by the inventive process, a block copolymer comprising a polycarbonate produced by the inventive process, and a method of producing the block copolymer. The invention also relates to novel catalysts of formula (III).

Abstract: The invention is directed to a process for preparing a linear or branched amine-modified thermoplastic resin with high flowability using as starting materials a linear or branched polyester and a primary or secondary aliphatic amine. The process does not require that the amine and polyester be combined in a liquid organic solvent during the process, and can be performed readily at ambient pressure. The amine-modified resins can be extruded and pelletized using normal operating conditions, making this process a versatile option for achieving a wide variety of viscosities in a simple, low cost, continuous operation.

Abstract: Disclosed are a polylactide stereocomplex with improved thermal stability and thus improved processability and a method for preparing the same. In order to confer flexibility to polymer chains, D-type polylactide polymer containing a small amount of caprolactone (poly D-lactide-caprolactone copolymer) is synthesized and it is uniformly mixed with L-type single-phase polylactide to prepare a flexible polylactide stereocomplex. Since the polylactide stereocomplex having flexible polymer chains has superior heat resistance and mechanical stability and experiences little decrease of the degree of stereocomplex formation even after thermal processing, the polylactide stereocomplex having improved thermal stability can be advantageously used for engineering plastics requiring high strength and good thermal stability, alternative materials for general-use plastics, high-performance medical materials, or the like because of its remarkably improved processability.

Abstract: The present invention relates to novel polyimidothioethers-inorganic nanoparticle hybrid material, which exhibit good surface planarity, thermal dimensional stability, tunable refractive index, and high optical transparency upon forming into films. The present invention also relates to polyimidothioethers which is an intermediate for preparing the present hybrid material, and their preparation.

Abstract: Among other aspects, provided herein are multi-armed polymer conjugates comprising an alkanoate-linker, compositions comprising such conjugates, and related methods of making and administering the same. Methods of treatment employing such conjugates and related uses are also provided. The conjugates are prepared with high drug loading efficiencies.

Abstract: A xylylenediamine-based polyamide resin/fiber composite material and molding are provided that do not exhibit a decline in properties under high temperatures and high humidities, and that exhibit a high elastic modulus and present little warping, and exhibit better recycle characteristics, a better moldability, and a better productivity than for thermosetting resins. The polyamide resin-type composite material comprises a fibrous material (B) impregnated with a polyamide resin (A) wherein at least 50 mole % of diamine structural units derived from xylylenediamine, and having a number-average molecular weight (Mn) of 6,000 to 30,000, and containing a component of a molecular weight of not more than 1,000 at 0.5 to 5 mass %.

Abstract: A polyamide-imide resin obtained by a process comprising the step of reacting an aromatic diisocyanate with a diimide dicarboxylic acid containing 40 mol % or more of a compound represented by the following general formula (1) and 20 mol % or more of a compound represented by the following general formula (2).

Abstract: The present invention provides new classes of phenolic compounds derived from hydroxyacids and tyrosol or tyrosol analogues, useful as monomers for preparation of biocompatible polymers, and the biocompatible polymers prepared from these monomeric hydroxyacid-phenolic compounds, including novel biodegradable and/or bioresorbable polymers. These biocompatible polymers or polymer compositions with enhanced bioresorbabilty and processibility are useful in a variety of medical applications, such as in medical devices and controlled-release therapeutic formulations. The invention also provides methods for preparing these monomeric hydroxyacid-phenolic compounds and biocompatible polymers.

Abstract: The present invention is directed to linear, biodegradable polyesteramide (PEA) polymers synthesized with repeating units derived from aminophenol esters and diacids. These PEAs have a monomer repeat represented by as well as a variety of uses to coat, form or comprise medical devices, combination medical devices and pharmaceutical compositions, including sustained release formulations.

Abstract: A method of making a pure block copolymer includes forming a crude block copolymer; heating a solution of the crude block copolymer and alcohol; and cooling the solution to promote precipitation of a purified block copolymer, wherein an amount of impurities remaining in the purified block copolymer is from about 0 to about 5 wt % based on a total weight of the purified block copolymer; a ratio of a polydispersity index of the crude block copolymer to a polydispersity index of the purified block copolymer is from about 1.02 to about 1.25; a ratio of a molecular weight of the crude block copolymer to a molecular weight of the purified block copolymer is from about 0.75 to about 1.0; and a ratio of a number average molecular weight of the crude block copolymer to a number average molecular weight of the purified block copolymer is from about 0.65 to about 1.

Abstract: Functional PLA-PEG copolymers, the nanoparticles thereof, their preparation and use for targeted drug delivery and imaging The present invention concerns novel functional PEG-PLA containing copolymers, the nanoparticles containing the same, their process of preparation and their use for site specific targeted drug delivery and imaging.

Abstract: Provided are novel dinuclear indium catalysts of formula (A) that are capable of living and immortal ring opening polymerization and copolymerization of cyclic ester monomers for the preparation of biodegradable polymers and copolymers, in particular polyesters. Also disclosed are polymerization methods and polymer products. These dinuclear indium catalysts allow less costly, highly reactive living polymerization of cyclic ester monomers with possible high turn over rates and/or substantial stereo chemical and microstructure control.

Abstract: The present invention relates to phosphoric acid derivatives, which are present as urea urethanes and contain a radical with an affinity for the binder in addition to at least one phosphoric acid ester group. Said phosphoric acid derivatives are especially suitable as wetting agents and dispersants.

Abstract: There is provided a toner binder containing a polyester resin (P) composed of two or more polyester resins that are each obtained by polycondensation of a carboxylic acid component (x) and an alcohol component (y). The alcohol component (y) of at least one polyester resin (P1) constituting the polyester resin (P) comprises 30 to 100 molar % of an adduct (y1) of bisphenol A with 2 to 4 ethylene oxide molecules. The alcohol component (y) of at least one other polyester resin (P2) constituting the polyester resin (P) comprises 50 to 95 molar % of an aliphatic diol (y2) having 2 to 4 carbon atoms. The (P2) is other than the (P1), and the polyester resin (P) satisfies relationships as follows. 11.5?SP value [(cal/cm3)1/2] of (P)?13.0; and 5.2?HLB value (according to the Oda method) of (P)?7.1.

Abstract: The present invention relates to biodegradable polymer mixtures comprising i) 40% to 95% by weight, based on the total weight of components i to ii, of at least one polyester based on aliphatic or aliphatic and aromatic dicarboxylic acids and aliphatic dihydroxy compounds; ii) 5% to 60% by weight, based on the total weight of said components i to ii, of polyalkylene carbonate, particularly polypropylene carbonate; iii) 0% to 60% by weight, based on the total weight of said components i to iii, of at least one biodegradable homo- or copolyester selected from the group consisting of polylactic acid, polycaprolactone and polyhydroxyalkanoate, and/or of an inorganic or organic filler; iv) 0% to 10% by weight, based on the total weight of said components i to ii, of an epoxy-containing copolymer based on styrene, acrylic ester and/or methacrylic ester, and v) 0% to 15% by weight of an additive selected from the group consisting of lubricant, antiblocking agent, antistat, UV absorber, UV stabilizer, thermal stabil

Abstract: Disclosed is a water-soluble high-molecular weight conjugate of physiologically active substances which enable medicament to release without depending on the enzymes in a living body and which is expected to have a useful therapeutic effect. A high-molecular weight conjugate of a physiologically active substance has a substituent group represented by a general formula (1) bonded to a side-chain carboxy group of a block copolymer which has a polyethylene glycol moiety and either a polyaspartic acid moiety or a polyglutamic acid moiety.

Abstract: The present invention pertains to copolymers having one or more polyisobutylene segments and one or more biodegradable polymer segments, to methods of making such copolymers, to medical articles that contain such copolymers, and to methods of making such medical articles. According to certain aspects of the invention, copolymers are provided, which comprise a plurality of polyisobutylene segments and a plurality of biodegradable polymer segments. According to certain aspects of the invention, copolymers are provided, which comprise urethane linkages, urea linkages, amide linkages, ester linkages, anhydride linkages, carbonate linkages, linkages commonly described as “click” chemistry linkages, and combinations of two or more types of such linkages.