Abstract: The present invention relates to a polyester resin. The polyester resin contains a particular content of diol moieties, derived from isosorbide and diethylene glycol, and thus can provide a resin molded product exhibiting high transparency in spite of a large wall thickness thereof.

Abstract: The present disclosure relates to polymers which contain a hydrophobic and hydrophilic segment which is sensitive to pH as well as a metal chelating group. In some aspects, the metal chelating group is chelated to a metal ion capable of positron emission. In some aspects, the polymers form a micelle which is sensitive to pH and results in a change in fluorescence based upon the particular pH. In some aspects, the disclosure also provides methods of using the polymers for the imaging of cellular or extracellular environment or delivering a drug.

Abstract: The present invention relates to a method for the preparation of a low odor polyether polyol, including: a) providing a basic polyether polyol which comprises one or more aldehyde compounds in an amount of lower than 2 wt. %, based on the amount of said basic polyether polyol as 100 wt. %; b) adding to said basic polyether polyol an aldehyde trapping agent and said aldehyde trapping agent is reacted with said one or more aldehyde compounds to remove said one or more aldehyde compounds, wherein said aldehyde trapping agent is in an amount of 0.1 to 5 wt. %, based on the weight of said basic polyether polyol as 100 wt. %; and c) removing the excess aldehyde trapping agent to obtain said low odor polyether polyol. The present invention also relates to the low odor polyether polyol prepared by said method.

Abstract: Compositions for use as a low-swelling tissue sealant are disclosed. The compositions include first and second precursor molecules, wherein the first precursor molecule is a polyoxyethylene homopolymer having at least two nucleophilic groups or a polyoxyethylene-polyoxypropylene block copolymer having at least two nucleophilic groups and the second precursor molecule is a polyoxyethylene-polyoxypropylene block copolymer having at least two electrophilic groups. Biomaterials for use as a low-swelling tissue sealant, methods of making such biomaterials, devices for applying a biomaterial to a tissue of a patient, methods of sealing a tissue of a patient, and kits also are disclosed.

Abstract: Disclosed herein are glycidol-based polymers, nanoparticles, and methods related thereto useful for a variety of applications, including, but not limited to, drug delivery. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: Described herein are poly(ether ketone ketone) (“PEKK”) polymers having improved processability. It was surprisingly discovered that by selectively controlling the relative amounts of reactants during the synthesis, PEKK polymers having unexpectedly lower melt viscosities can be obtained. More particularly, by selectively controlling the relative amounts of monomers used to form recurring units of the PEKK polymer, in conjunction with selective control of other reaction components, the resulting PEKK polymers had reduced viscosities, relative to PEKK polymers synthesized by using tradition reaction schemes (“traditional PEKK polymers”). By providing PEKK polymers with lower melt viscosities, the PEKK polymers described herein have improved processability.

Abstract: The invention relates to a method for manufacturing 1,4-bis(4-phenoxybenzoylbenzene), comprising: providing a reactant mixture comprising terephthaloyl chloride, diphenyl ether and a Lewis acid in a solvent; reacting terephthaloyl chloride with diphenyl ether, so as to obtain a product mixture comprising a 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex; wherein the 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex is dissolved in the solvent at a 1,4-bis(4-phenoxybenzoylbenzene) weight concentration in the solvent which is higher than the saturation limit of the 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex during at least part of the step of reacting terephthaloyl chloride with diphenyl ether.

Abstract: Provided are methods of producing polyamides from beta-lactones. The polyamides include bio-based polyamides that may be obtained, either in part or completely, from renewable sources.

Abstract: The present invention provides a polyamide composition containing 50 to 99 parts by mass of an aliphatic polyamide (1A) formed from a diamine and a dicarboxylic acid, and 1 to 50 parts by mass of a semi-aromatic polyamide (1B) containing a dicarboxylic acid unit that includes at least 75 mol % of isophthalic acid and a diamine unit that includes at least 50 mol % of a diamine of 4 to 10 carbon atoms, wherein the tan ? peak temperature of the polyamide composition is at least 90° C., and the weight average molecular weight Mw of the polyamide composition satisfies 15,000?Mw?35,000. The invention also provides a molded article or the like formed using the polyamide composition.

Abstract: Provided is a polyamide resin composition capable of providing a molded article having an excellent wear resistance while maintaining a high mechanical strength; a molded article; and a method for manufacturing a polyamide resin pellet. The polyamide resin composition includes a polyamide resin and an inorganic filler, wherein the polyamide resin includes diamine-derived constituent units and dicarboxylic acid derived constituent units; 70 mol % or more of the diamine-derived constituent units are derived from 1,4-bis(aminomethyl)cyclohexane; a molar ratio of cis:trans of the 1,4-bis(aminomethyl)cyclohexane is from 35:65 to 0:100; 70 mol % or more of the dicarboxylic acid-derived constituent units are derived from an ?,?-linear aliphatic dicarboxylic acid having from 8 to 12 carbons; and the polyamide resin includes phosphorus atoms in a ratio of from 20 to 100 mass ppm and comprises calcium atoms so as to be phosphorus atoms:calcium atoms of 1:0.3 to 0.7 in a molar ratio.

Abstract: The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by adding an acidic compound in addition to existing materials for dehydration.

Abstract: Functionalized silicone polymers incorporating segments formed from medium-chain fatty acids are generally disclosed herein. Methods of using such compounds, for example, as surfactants, are also disclosed herein, as well as methods of making such compounds, for example, from medium-chain fatty acids derived from natural oils.

Abstract: Segmented silicone polymers incorporating segments formed from medium-chain fatty acids are generally disclosed herein. Methods of using such compounds, for example, as surfactants, are also disclosed herein, as well as methods of making such compounds, for example, from medium-chain fatty acids derived from natural oils.

Abstract: The invention provides a metallopolymer coordination network comprising one or more coinage or similar metals and a glyme or glyme-equivalent. The composition has an amorphous polymer network that is significantly stronger than previously reported supramolecular hydrogels synthesized without glyme. Glyme chain length and water content strongly influence the mechanical, electronic, and optical behavior of the network.

Abstract: The disclosure provides redispersible CNC. The CNC disclosed herein is redispersible in non-polar and polar organic solvents as well as polar and non-polar polymers such as polyethylene or polypropylene. The disclosure surprisingly also provides redispersible CNC bearing improved redispersion in aqueous systems and most particularly in high ionic strength aqueous systems which usually require significant mixing energy to achieve dispersion.

Abstract: An object of the present invention is to provide polyvinyl alcohol resin composition pellets in which coloring is small and hardness characteristics are improved. The present invention relates to polyvinyl alcohol resin composition pellets, which comprise a polyvinyl alcohol resin, and have hardness of 100 N or more at 23° C. and 50% RH, and a yellow index value of 50 or less after being heated at 210° C. and pressed at 5 kgf/cm2 for two minutes.

Abstract: A method for forming a polymer/graphene nanocomposite includes providing a polymer matrix comprising a clear polymer and an additive effective to induce graphitization of the polymer at a wavelength in a range of 8.3 to 11 ?m, and irradiating the polymer matrix with radiation comprising a wavelength in a range of 8.3 to 11 ?m to provide the polymer/graphene nanocomposite.

Abstract: A method for forming a polymer/graphene nanocomposite includes providing a polymer blend comprising a polyetherimide and a polycarbonate; and irradiating the polymer blend with radiation comprising a wavelength in a range of 8.3 to 11 ?m to provide the polymer/graphene nanocomposite. The polymer blend has a melt volume rate of 1 to 100 cm3/10 min, preferably 5 to 75 cm3/10 min, more preferably 10 to 50 cm3/10 min, as determined at 360° C./5.0 kg in accordance with ISO 1133.

Abstract: A method for forming a polymer/graphene nanocomposite includes irradiating a polymer comprising an aromatic poly(carbonate-ester), a poly(etherimide-sulfone), or a combination thereof with radiation comprising a wavelength in a range of 8.3 to 11 ?m to provide the polymer/graphene nanocomposite.

Abstract: A fiber-reinforced molding material of the present invention includes a matrix resin and a reinforcing fiber, wherein the matrix resin includes a reactant of the following component (A) and the following component (B), and the following component (C), and a spiral flow length measured in accordance with EIMS T901 is 300 mm or longer, component (A): a component having one or more ethylenically unsaturated groups in one molecule and including at least one selected from the group consisting of the following component (A-1) and the following component (A-2); component (A-1): an unsaturated polyester resin having one or more ethylenically unsaturated groups and one or more hydroxyl groups in one molecule; component (A-2): an epoxy (meth)acrylate resin having one or more ethylenically unsaturated groups and one or more hydroxyl groups in one molecule; component (B): an isocyanate compound; component (C): a radical polymerization inhibitor having no hydroxyl group in a molecule.

Abstract: The present disclosure relates to a fiber-reinforced polypropylene composite resin composition with reduced odor for interior parts of vehicles which includes an inorganic deodorant with excellent effects of reducing odors so as to improve indoor air quality, and includes a mixture of a polypropylene polymer, a thermoplastic elastomer, a fiber-shaped filler, a coupling agent, a slip agent and a UV stabilizer. Interior parts of vehicles molded from the fiber-reinforced polypropylene composite resin composition according to the present disclosure deodorize unpleasant gas generated during the production process and have excellent mechanical properties, thus providing pleasant environments for drivers.

Abstract: Provided is a structure having excellent flexibility represented by elastic restoring from compression or tensile elongation at break, and excellent lightness. A structure according to the present invention includes reinforced fibers, first plastic, and second plastic that exhibits rubber elasticity at room temperature, the reinforced fibers being discontinuous fibers, and the first plastic and/or the second plastic coating a crossing point between the reinforced fibers in contact with each other.

Abstract: Mineral wool insulation products are provided. The mineral wool insulation includes a plurality of mineral wool fibers and a wax emulsion applied to the mineral wool fibers. The wax emulsion imparts excellent water resistance and thermal performance properties to the mineral wool insulation.

Abstract: A novel process for making PBI films starting from gel PBI membranes polymerized and casted in the PPA process wherein acid-imbibed gel PBIs are neutralized in a series of water baths and undergo controlled drying in association with a substrate material, yielding a PBI film without the use of organic solvents.

Abstract: Disclosed herein is a prepreg including a woven fabric base and a semi-cured product of a resin composition impregnated into the woven fabric base. The resin composition contains a maleimide resin as Component (A), an acrylic resin as Component (B), and a phenol resin as Component (C). The Component (B) has a weight average molecular weight falling within the range from 200,000 to 850,000.

Abstract: Aspects described herein are directed to compositions, systems, and methods of manufacturing a polymer-based construction material comprising polymeric resin, filler such as calcium carbonate (CaCO3), and titanium oxide (TiO2). A surface of the polymer-based construction material may be treated such that the surface energy is increased from the material's inherent value to a predetermined value of at least 40 dynes/cm2. Further, the surface energy of the treated surface may persist within 20% of the predetermined value for at least three days.

Abstract: A thermoplastic elastomer foam is made by incorporating a gaseous or supercritical blowing agent under pressure into a molten thermoplastic elastomer comprising polymeric polymeric crystalline domains, then releasing the pressure to foam the thermoplastic elastomer.

Abstract: The present invention relates to modified high density polyethylene, foamable compositions and foam or foamed articles made therefrom. The invention also relates to processes to make the same.

Abstract: The invention relates to a process for the production of a foam having low organic compounds emissions, to polypropylene foamed products obtainable by the process, and to a process for the manufacture of low organic compounds emission articles comprising a foam for use in cars and food packaging. The process comprises the steps of: a) providing a foam comprising a propylene composition comprising a high melt strength propylene (HMS-PP) homopolymer or copolymer or combinations thereof, said HMS-PP foam having a melt strength of at least 25 cN at a maximum speed of at least 200 mm/s and a melting temperature of at least 135° C. and b) subjecting the HMS-PP foam to a thermal treatment at a temperature Tt which is preferably between 5 and 15° C. below the melting temperature Tm of the HMS-PP for a duration between preferably 1 and 10 minutes.

Abstract: A method for purifying polymers made from depolymerization of plastic can include selecting a polymer for purification, adding the polymer to a reaction vessel with a solvent, heating the mixture to promote migration of contaminants from the polymer to the solvent, performing an extraction technique to remove contaminants, depressurizing the reaction vessel to isolate a purified polymer, and allowing the purified polymer to cool. In some embodiments, the polymer is a polyethylene polymer. In other embodiments, the polymer is a polypropylene polymer. In some embodiments, the polymer is a polystyrene polymer. In some embodiments, the extraction technique is supercritical fluid extraction using supercritical CO2 as a solvent. Parameters including temperature, pressure, duration, agitation rate, starting solvent volume, and co-solvent addition for supercritical fluid extraction can be selected based on the properties of the polymer to be purified.

Abstract: Embodiments relate to a process for regenerating a polyester container and regenerated polyester chips prepared therefrom. The process comprises preparing a polyester container provided with a heat shrinkable film; crushing the container provided with the heat shrinkable film to obtain flakes; and thermally treating the flakes to produce regenerated polyester chips, wherein when the flakes are thermally treated at a temperature of 200° C. to 220° C. for 60 minutes to 120 minutes, the clumping fraction is 5% or less, and the flakes comprise first flakes obtained by crushing the container and second flakes obtained by crushing the heat shrinkable film. It not only solves the environmental problems by improving the recyclability of the polyester container, but also is capable of enhancing the yield and productivity.

Abstract: A composite material comprising a polymer and a carbonized hemp filler, wherein the carbonized hemp filler is produced by carbonizing hemp at a temperature of at least 1100° C. to produce a char; and milling the char to produce a particle size, wherein the filler comprises 95% of particles of less than 10 microns in size; and wherein the hemp filler comprises between 1 and 50% of the total mass of the composite.

Abstract: Magnetic material powder that can be detected by a metal detector and the like and tungsten powder that can be detected by an X-ray inspection device are dispersed in a polymer material of the molded article.

Abstract: The invention relates to a ceramic particulate and polymer composite having enhanced viscoelastic and rheological properties.

Abstract: A complex formed by a zinc oxide molecule and a molecule comprising an acidic hydrogen is disclosed. The oxygen atom of the zinc oxide molecule is covalently bound to the acidic hydrogen.

Abstract: A temperature-responsive hydrogel which contains a carboxyl group-bearing polymer and a divalent-metal salt of an organic acid is provided. The carboxyl group-bearing polymer may be a homopolymer of a carboxyl group-bearing monomer or a copolymer of a plurality of monomers including the monomer. A method for producing the temperature-responsive hydrogel involves immersing a carboxyl group-bearing polymer in an aqueous solution of a divalent-metal salt of an organic acid. The concentration of the divalent-metal salt of an organic acid in the aqueous solution may be 50 mM to the saturation concentration. It is possible to provide a temperature-responsive gel having an LCST with no volume phase transition and a method for producing the temperature-responsive gel.

Abstract: A stabilizer mixture containing a sterically hindered amine light stabilizer and a triazine UV absorber in a specific ratio.

Abstract: A powder composition suitable for use in selective laser sintering for printing an object. The powder composition includes a first fraction comprising a plurality of polyaryletherketone (PAEK) particles having a mean diameter less than 30 microns, a second fraction comprising a plurality of polyaryletherketone (PAEK) particles having a mean diameter greater than 30 microns, and a third fraction comprising a plurality of carbon fibers. The first fraction and the second fraction are formed by an air classification separation performed on a pulverized powder. After the separation, the first fraction, the second fraction, and the third fraction are blended in a high intensity mixer. The powder composition when used in selective laser sinter results in parts with increased tensile strength and reduced surface roughness, among other improvements, as compared to similar powders omitting the first fraction. The PAEK may include polyetherketoneketone (PEKK).

Abstract: The use of titanium dioxide particles coated by an organic coating for increasing the hydrolysis resistance of an oriented polyester film, particularly wherein the organic coating does not comprise or is not derived from a silane, and particularly wherein the organic coating is selected from an organophosphorus compound and a polymeric organic coating; and oriented polyester films comprising such titanium dioxide particles coated byan organic coating; and photovoltaic cells comprising such films.

Abstract: This invention is based upon the unexpected finding that a hydrocarbon traction resin can be dispersed into the oil used in making an oil extended emulsion and solution rubbers to attain improved performance characteristics. For instance, this technique allows for the hydrocarbon traction resin to be incorporated into the rubber at a higher level than would ordinarily be possible using conventional mixing techniques. In tire tread compounds this provides improved wet traction characteristics without compromising cured stiffness (dry traction) and ultimate properties (chip/chunk resistance). This technique can be used to incorporate a resin into virtually any synthetic rubber that can benefit from being oil extended. It is of particular value in making resin modified solution styrene-butadiene rubber (SSBR), emulsion styrene-butadiene rubber (ESBR), high cis-1.4-polybutadiene rubber, and synthetic polyisoprene rubber which are formulated for use in tire tread compounds.

Abstract: A rubber composition contains (A) a modified conjugated diene-based polymer, (B) modified silica, and (C) a polymer having crystalline character. A crosslinked product is produced through crosslinking of the rubber composition containing the modified conjugated diene-based polymer (A), the modified silica (B), and the polymer having crystalline character (C). The crosslinked product is used for producing a tire including a tread and a sidewall, wherein at least one of the tread and the sidewall is formed of the crosslinked product.

Abstract: The present application belongs to the field of polymer materials, discloses a thermoplastic crosslinked polyethylene material, preparation method and use thereof. The thermoplastic crosslinked polyethylene material comprises a first polyethylene component that is easily crosslinked, a second polyethylene component that is not easily crosslinked, and an organic peroxide crosslinking agent. In the present application, the product of the first polyethylene that is easily crosslinked, is crosslinked in a fine particle form and uniformly dispersed in the second polyethylene component that is not easily crosslinked, and intertwined with the macromolecular chain of the second polyethylene component that is not easily crosslinked. The resulted product is completely thermoplastic, and has properties, such as heat resistance and creep property, superior to the first polyethylene component that is easily crosslinked and the second polyethylene component that is not easily crosslinked.

Abstract: A process for producing a composition comprising A) an ethylene-based polymer that has a density greater than, or equal to, 0.940 g/cc, and B) an ethylene homopolymer formed by polymerizing a reaction mixture comprising ethylene, using a free-radical, high pressure polymerization process includes adding component (A) to a molten stream of component (B) after component (B) exits the separator and before component (B) is solidified in the pelletizer. A polymerization configuration for producing the composition includes at least one reactor, at least one separator, at least one pelletizer, and a device used to feed component (A), in the molten state, to a molten stream of component (B) before the pelletizer. The composition has a ratio of the melt strength of the composition to the melt strength of component (B) is greater than or equal to 1.04 and a density of greater than 0.920 g/cc.

Abstract: A monolayer film is provided which contains ethylene vinyl alcohol copolymer (EVOH), contamination from dirt and a compatibilizer, that can be used for producing trash bags and the like, as well as a method to successfully recycle fumigation films containing EVOH and contamination from dirt into such a monolayer film.

Abstract: The present disclosure provides a process. In an embodiment, the process includes blending a broad molecular weight distribution (MWD) ethylene-based polymer having an 121/12 ratio from 55 to 85 with a narrow MWD ethylene-based polymer having an 121/12 ratio from 20 to 50. The process includes forming a blend component comprising from 20 wt % to 45 wt % of the broad MWD ethylene-based polymer, from 80 wt % to 55 wt % of the narrow MWD ethylene-based polymer, and optional carbon black. The blend component has a density from 0.925 g/cc to 0.955 g/cc and an 121/12 ratio from 30 to 55. The process includes extruding the blend component over a conductor at a rate greater than 1.02 m/s, and forming a conductor jacket having a surface smoothness from 30 ?-inch to 80 ?-inch.

Abstract: Polymer blends, methods of making, and methods of using the polymer blends are described. A polymer blend can include a polyethylene (PE) polymer and a controlled rheology polypropylene (CRPP) polymer having a PE polymer to CRPP polymer (PE:CRPP) weight ratio of greater than 1:1.

Abstract: A melt-formable ethylene-vinyl alcohol copolymer composition and a multilayer structure are substantially free from heat coloration. The melt-formable ethylene-vinyl alcohol copolymer composition contains: (A) an ethylene-vinyl alcohol copolymer; (B) an alkali earth metal compound; and (C) an iron compound; wherein the iron compound (C) is present in an amount of 0.01 to 20 ppm on a metal basis based on the weight of the ethylene-vinyl alcohol copolymer composition.

Abstract: The present invention provides polymer blends that can be used in a multilayer structure and to multilayer structures comprising one or more layers formed from such blends. In one aspect, a polymer blend comprises (a) a copolymer comprising ethylene and at least one of acrylic acid and methacrylic acid having an acid content of 2 to 21 weight percent based on the weight of the copolymer, wherein the amount of copolymer (a) comprises 20-80 weight percent of the blend based on the total weight of the blend, and (b) a copolymer comprising ethylene and at least one of methyl acrylate and ethyl acrylate having an acrylate content of 5 to 30 weight percent based on the weight of the copolymer, wherein the amount of copolymer (b) comprises 10 to 50 weight percent of the blend based on the total weight of the blend, wherein the amount of copolymer (a) and copolymer (b) is at least 70 weight percent of the blend based on the total weight of the blend.

Abstract: The invention relates to a pellet comprising a thermoplastic polymer sheath intimately surrounding glass filaments, which glass filaments are covered at least in part with an impregnating agent and extend in a longitudinal direction of said pellets, wherein the thermoplastic polymer sheath is prepared from a thermoplastic polymer composition comprising A) a heterophasic propylene copolymer consisting of a propylene-based matrix and a dispersed ethylene-?-olefin copolymer, wherein the heterophasic propylene copolymer has a melt flow rate of at least 40 g/10 min as determined in accordance with ISO 1133 (230° C., 2.16 kg) and a FOG value of at most 350 ?g/g as determined by VDA 278, wherein the glass filaments are present in an amount of 10-70 wt % based on the pellet.

Abstract: A propylene polymer composition made from or containing: a) from 35 wt % to 65 wt %, based upon the total weight of the propylene polymer composition, of a propylene 1-hexene copolymer containing from 10.2 to 13.0% by weight, based upon the weight of the propylene 1-hexene copolymer, of 1-hexene derived units and having a Melt Flow Rate (MFR, measured according to ASTM D 1238, 230° C./2.16 kg, (at 230° C., with a load of 2.16 kg)) from 3.5 to 12.0 g/10 min; b) from 35 wt % to 65 wt %, based upon the total weight of the propylene polymer composition, of a propylene ethylene copolymer containing from 1.5 wt % to 6.5 wt %, based upon the weight of the propylene ethylene copolymer, of ethylene derived units and having a Melt Flow Rate (MFR, measured according to ASTM D 1238, 230° C./2.16 kg, (at 230° C., with a load of 2.16 kg)) from 3.5 to 12.0 g/10 min.