Abstract: The invention relates to methods for producing a lactic acid based polymer, which comprises co-polymerisation of lactide with cyclic dimer of another ?-hydroxy-acid as co-monomer of opposite ?-carbon chirality.

Abstract: The present invention relates to: a biodegradable polyester resin prepared by adding a reaction rate control agent and a molecular weight increasing agent which are derived from biomass; and a method for preparing the same and, more specifically, to a biodegradable polyester resin and a method for preparing same, in which, to obtain a biodegradable polyester resin having a reaction rate, flexibility and tensile strength which are superior to those of polybutylene-co-adipate terephthalate, which is a conventional biodegradable polyester resin, polyglycerol succinate having a number average molecular weight of 500-1,000, prepared by synthesis through an esterification reaction between glycerol and succinic acid, is added as a reaction rate control agent derived from biomass to increase the reaction rate in the synthesis of a biodegradable polyester resin, and polyglycerol furanoate having a number average molecular weight of 1,000-5,000, prepared by synthesis through an esterification reaction between glycerol

Abstract: Provided is a polyester-based resin composition including: (a) at least one type of dicarboxylic acid component selected from an aromatic dicarboxylic acid and an ester-forming derivative of the aromatic dicarboxylic acid; (b) a bisphenyl fluorene-based diol component; and (c) a tetracyclobutane-based diol component, wherein a content of the bisphenyl fluorene-based diol component is 20 to 90 mol % relative to the total of the diol component and a glass transition temperature (Tg) is greater than or equal to 100° C.

Abstract: To provide a resin composition and a molded article. The resin composition contains a thermoplastic resin and an electrically conductive substance, wherein the resin composition formed into a molded article with a size of 100 mm×100 mm×t mm thick, provided that t is a value in a case where Concentration C (mass %) of an electrically conductive substance in the resin composition×Thickness t (mm) gives a value of 1.2 or more, has a ? absorptance of 20.0% or less, which is a difference between a maximum value and a minimum value of the absorptance in the frequency range of 28.0 GHz to 40.0 GHz; and has the absorptance of 35.0% or more at a frequency of 28.

Abstract: Described are reflective, titanium dioxide-containing polycarbonate compositions to which 0.001 wt. % to 0.25 wt. % glass flakes including a titanium dioxide coating are added to improve reflectance values, said glass flakes usually being used in larger quantities as effect pigments. Said compositions make it possible to produce brilliant white molded parts.

Abstract: A polymerisation process is disclosed, the process having the steps of providing an oxetane derivative of a monosaccharide, providing an anionic initiator, forming a reaction mixture comprising the oxetane derivative of the monosaccharide and the anionic initiator, and initiating ring opening polymerisation reaction of the oxetane moiety of the oxetane derivative of the monosaccharide in the reaction mixture, thereby producing a polyether. The monosaccharide may be pentose or a hexose or a derivative of a pentose or hexose. The pentose may be xylose, in D or L form, or a mixture of D and L form. The hexose may be a derivative of galactose. Also disclosed are polyurethanes being a reaction product of an isocyanate and a polyether.

Abstract: Provided is a curable compound product having excellent storage stability and moldability and by which a cured product having ultra-high heat resistance can be formed. The curable compound product according to the present disclosure has the following characteristics (a) to (g): (a) A number average molecular weight (calibrated with polystyrene standard) is from 1000 to 15000. (b) A proportion of a structure derived from an aromatic ring in a total amount of the curable compound product is 50 wt. % or greater. (c) Solvent solubility at 23° C. is 1 g/100 g or greater. (d) The glass transition temperature is from 80 to 230° C. (e) A viscosity (?0) of a 20 wt. % NMP solution obtained by subjecting the curable compound product to a reduced-pressure drying process and then dissolving the reduced-pressure-dried curable compound product in NMP, and a viscosity (?10) of the 20 wt. % NMP solution after being left to stand for 10 days in a desiccator maintained at 23° C. satisfy the Equation (E): ?10/?0<2(E).

Abstract: Provided is a polyether ether ketone, comprising a repeating unit represented by the following formula (1), satisfying one or both of the following conditions (A) and (B), and having a hydroxy group at one terminal or both terminals of a main chain of the polyether ether ketone: (A) a fluorine atom content a is less than 2 mg/kg; and (B) a chlorine atom content b is 2 mg/kg or more.

Abstract: Disclosed is a polymer (P) in the form of a pulverulent solid consisting of monomeric units derived from partially or totally solidified glutamic acid (GA), and monomer units of at least one crosslinking agent (AR) having at least two glycidyl functions.

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: The present invention relates to a method for producing nylon, said method comprising the steps of providing a nylon base material being sulfonated in the polymer backbone and/or on polymer amine-end groups, said nylon base material comprising a sulfur content of at least 200 ppm; mixing the nylon base material with an additive, said additive comprising an amine-end group terminating agent and/or a sulfonating agent, and optionally at least one further additive; thereby obtaining a nylon polymer mixture and reacting the nylon polymer mixture thereby obtaining a nylon polymer, said nylon polymer being characterized by a lower amine-end group content than the content of amine-end group of the nylon base material. The present invention further relates to a method for producing nylon base material. In another aspect, the present invention relates to a nylon base material. In another aspect, the present invention relates to a nylon polymer.

Abstract: In some aspects, the present disclosure pertains to a multi-arm polymer comprising a core and a plurality of polyoxazoline segments (or arms) having a first end that is covalently attached to the core and a second end comprising a moiety that comprises a reactive group. In some aspects, systems are provided that comprise a first composition comprising such a multi-arm polymer and a second composition comprising a multifunctional compound that comprises functional groups that are reactive with the reactive groups of the multi-arm polymer. In some aspects, systems are provided that comprise crosslinked reaction products of such a multi-arm polymer and such a multifunctional compound.

Abstract: Redox active S-linked polymers, sulfurized matrices, and related composites, compositions electrode material, electrodes, as well as related electrode chemical cell battery, methods and systems are described. In particular, S-linked polymers and related compositions, composites, electrode material and electrodes having a redox potential of up to 3.5 V with reference to Li/Li+ electrode potential under standard conditions and a capacity up to 800 mAh/g or higher are described. More particularly, redox active S-linked polymers, sulfurized matrices, and related composites, and compositions are provided as electrode material of a cathode for an electrochemical cell further containing a Li anode and a non-aqueous electrolyte.

Abstract: The invention relates to a poly(aryl ether sulfone) (PAES) copolymer (P2) with ionically and/or covalently attached bioactive compound(s), articles comprising (P2), methods of making (P2), and methods for making articles such as membranes comprising (P2). Functionalized side-chain PAES copolymers (P1) permit the immobilization of a bioactive compound on copolymer's functionalized side chains for preparing bioactive articles. In particular, an antithrombotic agent such as heparin may be immobilized to form a bioactive membrane structure suitable for hemodialysis to avoid or eliminate the injection of such antithrombotic agent to a patient undergoing hemodialysis. Preferred embodiments include heparinized PAES copolymers and membranes comprising them.

Abstract: A method for making a solventless polyorganosiloxane pellet is disclosed. The pellet is comprised of a polyorganosilicate resin and a polyorganosiloxane gum. The pellet is useful for making silicone pressure sensitive adhesive compositions.

Abstract: The present invention relates to cross-linked polysiloxanes containing organic bridging groups Ver, a method for preparing said cross-linked polysiloxanes, blends containing said polysiloxanes and fillers, a method for biobased degradation of said polysiloxanes, the use of the organic bridging groups Ver, the precursors of which contain non-terminal functional groups and/or heteroatoms, in the cross-linked polysiloxanes for the biobased degradation of the cross-linked polysiloxanes by means of a biobased agent, and the use of the cross-linked polysiloxanes and the blend for industrial applications.

Abstract: To provide a material that can be easily ascertained whether antibacterial or antiviral function is imparted. In the polyphenol derivative, hydrogen atoms of some hydroxy groups or some hydrogen atoms of aromatic rings of a polyphenol are substituted by a luminescent group. In the polyphenol derivative, hydrogen atoms of some hydroxy groups or some hydrogen atoms of aromatic rings of a polyphenol may be substituted by a chain hydrocarbon group. The polyphenol derivative may be network polymerized into a polymer material.

Abstract: A heat sealed substrate, the substrate being heat sealed with an aqueous polyolefin dispersion including an aqueous dispersion A including: A1, a copolymer of polyethylene and (meth)acrylic acid [E(M)AA] or a mixture of different copolymers of polyethylene and (meth)acrylic acid, A2, another polymer, not being a copolymer of polyethylene and (meth)acrylic acid, or a mixture of other polymers, and an optional additive; and an optional compound B, where compound B is a material dispersable or soluble in water and different from any of the ingredients of dispersion A.

Abstract: A hydrogel particle encapsulation and suspension media removal method includes combining hydrogel materials, which include a hydrogel polymer, a linker, a cargo suspension, and a suspension media. The hydrogel materials are mixed to form a hydrogel-suspension media mixture. The mixed hydrogel materials are polymerized to form hydrogel particles having encapsulated cargo. The suspension media is substantially removed from the hydrogel-suspension media mixture by: adding a density adjusting material, forming a three-phase solution that includes the density adjusting material settled between the hydrogel particles and the suspension media, centrifuging the three-phase solution, agitating the three-phase solution, centrifuging the three-phase solution, and retrieving the hydrogel particles lacking the suspension media.

Abstract: A polyethylene powder having a viscosity average molecular weight of 100,000 or more and 2,500,000 or less, wherein, in a torque curve obtained when kneading the polyethylene powder under the following <Kneading Conditions> using a Labo Plastomill, a slope of a straight line connecting two local maximum points is 2 N·m/min or more and 15 N·m/min or less: <Kneading Conditions> After 24 g of liquid paraffin is kneaded for 10 minutes using a Labo Plastomill Mixer, produced by Toyo Seiki Seisaku-sho, Ltd. (unit model: 30C150, mixer model: R-60) at a set temperature of 114° C. and a rotation speed of 5 rpm, 16 g of the polyethylene powder and 0.4 g of an antioxidant are added thereto, followed by kneading at a rotation speed of 30 rpm for 3 minutes, and then the set temperature is raised from 114° C. to 163° C. over 1 minute; and after the temperature rise, the mixture is kneaded at a set temperature of 163° C. and a rotation speed of 30 rpm for 5 minutes.

Abstract: Polyamide fine particles include a polymer or a copolymer including a repeating structure unit represented by Formula (1) as a main component, wherein a ratio (r/ABET) of a porosity r occupying a particle surface and a BET specific surface area ABET that is a specific surface area of the particle surface measured by a BET method is 6.0 or more and 100.0 or less: wherein x is an integer of 2 or more and 3 or less.

Abstract: A nylon 5 powder suitable for three-dimensional printing is provided. The process includes adding nylon 5 and ethanol to a container; wherein an amount of ethanol is about two to five times an amount by weight of the nylon 5; raising a temperature in the container to between about 130 degrees Celsius and about 150 degrees Celsius; forming a solution of nylon 5 in the ethanol; cooling the solution to a precipitation temperature of the nylon 5 to between about 100 degrees Celsius and about 125 degrees Celsius; agitating the solution; precipitating the nylon 5 in powder form from the solution; and removing the nylon 5 powder from the container.

Abstract: A method for producing purified fine polymer particles (A), includes an organic solvent mixing step of mixing an organic solvent (B) and a latex that contains fine polymer particles (A) and an emulsifying agent having a polyethylene group to obtain a mixture, and a mixed state maintaining step of allowing the mixture to stand and/or stirring the mixture. The method can efficiently purify fine polymer particles from a latex and has reduced environmental impact.

Abstract: A process for the treatment of a photopolymer material that constitutes matrix plates in flexographic printing includes: shredding and refining the matrix plates into pieces and subsequent cold grinding to obtain a powder; mixing the powder with a thermosetting resin and an amine hardener; carrying out a first phase of turbomixing; carrying out a first phase of cooling; carrying out a second phase of turbomixing; carrying out a second cooling phase; mixing the mixture in a cooling unit; adding an amine catalyst for thermosetting resins; inserting into a vacuum gauge; pouring the mixture into a mold; subjecting the mixture to two post-polymerization cycles in an oven.

Abstract: Described herein are methods of preparing composites from never-dried natural rubber. Also described are composites made from never-dried natural rubber and filler. A method of preparing a composite in an integrated manufacturing operation is further described which includes producing a never-dried natural rubber from latex recovered from natural latex sources in a latex or rubber manufacturing facility. Products made from the composites disclosed herein are also described.

Abstract: Disclosed herein are methods of preparing a composite. In one aspect, the method comprises: (a) charging a mixer having one or more rotors with: (i) at least a liquid masterbatch comprising a first filler dispersed in at least one elastomer, and (ii) a wet filler comprising a second filler and a liquid; (b) in one or more mixing steps, mixing the at least the liquid masterbatch and the wet filler to form a mixture; and (c) discharging, from the mixer, the composite comprising the first and second fillers dispersed in the at least one elastomer at a total loading of at least 20 phr, wherein the composite has a liquid content of no more than 10% by weight based on total weight of said composite.

Abstract: A tube includes a layer including a polymer matrix and a refractive index domain dispersed within the polymer matrix, wherein the refractive index domain has a refractive index less than a refractive index of the polymer matrix, the layer having a refractive index of less than 1.42.

Abstract: The present invention aims to provide: an epoxy resin composition in which the effect of adding an additive can be efficiently obtained even at a high temperature; a molding material which achieves a reduced unevenness in physical properties after curing while allowing the additive to exert its effect; and a fiber-reinforced composite material which has excellent mechanical properties while allowing the additive to exert its effect. To achieve the above-mentioned object, the epoxy resin composition according to the present invention is an epoxy resin composition including the following components (A) to (E): component (A): an epoxy resin having a viscosity at 25° C. of from 0.1 to 1,000 Pa·s and having two or more epoxy groups within one molecule; component (B): an additive having a viscosity at 25° C. of from 0.

Abstract: The present invention provides a polyimide film and a manufacturing method therefor, wherein the polyimide film satisfies the following equation (1) as measured for dimensional change by a thermomechanical analyzer (TMA) undergoing a temperature elevation process from 25° C. to 400° C. and then a cooling process from 400° C. to 25° C. Equation (1) dimensional measurement in TD direction (cooling, 50° C.)?dimensional measurement in TD direction (temperature elevation, 50° C.)<0 ?m.

Abstract: A polymer thin film includes polyethylene having a molecular weight of at least approximately 250,000 g/mol, and has an elastic modulus of at least approximately 25 GPa, a tensile strength of at least approximately 0.8 GPa, and a thermal conductivity of at least approximately 5 W/mK. Formation of the polymer thin film may include forming a polymer solution from a crystallizable polyethylene and a liquid solvent, forming a gel from the polymer solution, forming a polymer thin film from the gel by calendering or solid state extrusion, and stretching the polymer thin film.

Abstract: A surface-modifying sheet contains a release sheet and a surface-modifying layer, the surface-modifying layer has a 160° C. storage modulus of 5.0×103 to 1.0×107 Pa, and the surface-modifying layer has a surface tension of 38 mN/m or higher.

Abstract: Disclosed are a biodegradable high-barrier packaging film, a preparation method and an application thereof, belonging to the technical field of biodegradable packaging film processing. The biodegradable high-barrier packaging film includes 60-70 parts of polyglycolic acid (PGA), 40-30 parts of poly(butylene succinate-co-butylene adipate) (PBSA), and 0.1-0.7 part of ADR 4468 (copolymer of styrene, acrylate and glycidyl acrylate), where a sum of the PGA and the PBSA is 100 parts. The preparation method of the biodegradable high-barrier packaging film includes: mixing the PGA, the PBSA and ADR 4468 (copolymer of styrene, acrylate and glycidyl acrylate), and performing melting, extruding and granulating to obtain a blends masterbatch; then extrusion blowing the blends masterbatch into a film to obtain the biodegradable high-barrier packaging film.

Abstract: This invention provides methods of recycling or remanufacturing a fiber-reinforced thermosetting composite including softening of a fiber-reinforced thermosetting by subjecting the composite to a partial solvolysis, and reshaping the softened composite to form a reshaped softened composite, and infusing the reshaped softened composite with a virgin thermosetting resin or a glass or other fiber wrapping to form a recycled or a remanufactured composite. Recycled and remanufactured composite(s) are provided.

Abstract: An article including a substrate; a diffuser polymer; and a thin layer of optical material 14 that conforms to a surface of the diffuser polymer is disclosed. A method of making the article is also disclosed.

Abstract: A method of producing thermoplastic particles may comprise: mixing a melt emulsion comprising (a) a continuous phase that comprises a carrier fluid having a polarity Hansen solubility parameter (dP) of about 7 MPa0.5 or less, (b) a dispersed phase that comprises a dispersing fluid having a dP of about 8 MPa0.5 or more, and (c) an inner phase that comprises a thermoplastic polyester at a temperature greater than a melting point or softening temperature of the thermoplastic polyester and at a shear rate sufficiently high to disperse the thermoplastic polyester in the dispersed phase; and cooling the melt emulsion to below the melting point or softening temperature of the thermoplastic polyester to form solidified particles comprising the thermoplastic polyester.

Abstract: A method for forming a resin layer, the method including selectively applying an ultraviolet ray curable material that reacts to ultraviolet rays on a target substrate, selectively curing a preliminary resin layer by irradiating at least a portion of an entire area of the preliminary resin layer formed of the ultraviolet ray curable material with first ultraviolet rays whose shape and amount of light are adjusted, and completely curing the preliminary resin layer by irradiating second ultraviolet rays having a different amount of light from the first ultraviolet rays whose shape and amount of light are adjusted.

Abstract: A polymer composition includes a) ?10 wt % and ?60 wt % of a high melt strength polypropylene, b) ?10 wt % and ?35 wt % of a polyethylene, c) ?10 wt % and ?60 wt % of a first polypropylene, wherein the first polypropylene is chosen from the group of propylene homopolymers, propylene copolymers and/or mixtures thereof, and d) ?0 wt % and ?60 wt % of a second polypropylene, wherein the sum of the high melt strength polypropylene, the first polypropylene and the second polypropylene is ?60 wt % based on the sum of the weight of the high melt strength polypropylene, the polyethylene, the first polypropylene and the second polypropylene. The polyethylene has a density ?940 kg/m3 and ?970 kg/m3 as determined according to ISO 845 (2006).

Abstract: Polypropylene-based resin extruded expanded particles have a low open cell ratio and are inexpensively obtainable. The polypropylene-based resin extruded expanded particles are obtained by extrusion expansion of a resin composition that contains a polypropylene-based resin (A) which has a branched structure and a polypropylene-based resin (B) in which a branched structure is not introduced. Furthermore, the polypropylene-based resin (B) has a weight average molecular weight of not less than 500,000 and a flexural modulus of not less than 950 MPa.

Abstract: A plastic composite comprises a face sheet layer, a reinforcement layer formed on an upper surface of the face sheet layer and including a first glass fiber and a polyurethane foam, and a LFI layer formed on an upper surface of the reinforcement layer and including a second glass fiber and a polyurethane foam.

Abstract: A process for the production of functionalized particle foam mouldings based on a thermoplastic base material with a glass transition temperature of at least 100° C. involves functionalization of base particles.

Abstract: Molded foam articles are provided. The molded foam articles have at least one surface having at least a portion that has been skin-formed for improving the thermal and mechanical properties of the molded foam articles without the need for material, density, or foam particle size changes.

Abstract: A functionalized microporous, mesoporous, or nanoporous membrane, material, textile, composite, laminate, or the like, and/or a method of making or using such functionalized membranes. The functionalized porous membrane may be a functionalized microporous, mesoporous, or nanoporous membrane that has a functional molecule attached, such as a functional polymer, to the surface and/or internal fibrillar structure of the membrane.

Abstract: An aqueous non-foamed functional composition formulation is disposed on a foamed opacifying layer in light-blocking, foamed opacifying elements. This non-foamed functional composition formulation has 0.5-15% solids and essential (i) and (iv) components and optional (ii), (v), (vi), and (vii) components. The components (i) untreated synthetic silica (fumed silica or precipitated silica) at 0.5-10 weight %; and a (iv) water-soluble or water-dispersible organic polymeric binder having a glass transition temperature (Tg) below 25° C. The weight ratio of the (i) untreated synthetic silica to the (iv) water-soluble or water-dispersible organic polymeric binder is 10:1 to 1:1. The optional components include: a (ii) solid or non-solid lubricant; a (v) crosslinking agent; a (vi) thickener; and a (vii) coating aid. Glass particles can also be present. The presence of the (i) untreated synthetic silica provides improved brightness, e.g.

Abstract: A plastic-degrading solution including Flavobacterium, Enterobacter asburiae, Ideonella sakaiensis, Sphingomonas, Bacillus subtilis and extracts of Fusarium oxysporum, Purpureocillium lilacinum, Pestalotiopsis microspora, Trichoderma arzesianut and Alcaligenum.

Abstract: Systems and methods for programmable degradation of a plastic deploy a plastic comprising a nanoscopic dispersion of enzymes and configured to exploit enzyme active sites and enzyme-protectant interactions to provide processive depolymerization as the primary degradation pathway with expanded substrate selectivity to effect substantially complete depolymerization without substantial microplastics formation with partial polymer degradation.

Abstract: A waste polyester material is prepared for recycling by dissolving the material in a solution comprising hexafluoroisopropyl (HFIPA) and a chlorinated hydrocarbon, such as dichloromethane (DCM) and/or an aromatic hydrocarbon, such as toluene or xylene, to form a dissolved polyester sample. The dissolved polyester may be prepared for recycling by evaporation, spray drying, and/or precipitation, which produces a purified solid polyester product. The dissolution solution, which is separated from the purified solid polyester product, is also recycled through distillation with purification.

Abstract: A resin composition comprises: a photopolymerizable compound, a photopolymerization initiator, and a surface-modified inorganic oxide particle having an ultraviolet curable functional group, wherein the content of the chemically adsorbed component in the organic component constituting the surface-modified inorganic oxide particle is more than 70% by mass based on the total amount of the organic component.

Abstract: The disclosure relates to compositions containing alumina nanoparticles. Each alumina nanoparticle is covalently bonded to polyurethane and two different functional groups. One of the functional groups contains a fluorocarbon. The other functional group is capable of undergoing protonation. The wettability of the compositions can be altered by changes in pH. The disclosure also provides methods for synthesizing the compositions and using the compositions in oil-water separation applications.

Abstract: A molding resin composition includes: an epoxy resin; a curing agent; and an inorganic filler containing at least one selected from the group consisting of calcium titanate particles and strontium titanate particles, in which a total content of the calcium titanate particles and the strontium titanate particles is 60% by volume to 80% by volume with respect to a total amount of the inorganic filler.

Abstract: An aluminum nitride granular powder is constituted by aluminum nitride sintered granules, the aluminum nitride granular powder having a maximum peak diameter of 30 ?m to 200 ?m in a volume-based particle diameter distribution obtained from maximum lengths of the aluminum nitride sintered granules measured with use of a dry particle image analyzer, with regard to the aluminum nitride sintered granules each of which has a particle diameter of not less than 30% of the maximum peak diameter, a ratio of the number of particles having an HS roundness value of 0.5 to 0.8 as measured with use of the dry particle image analyzer being not less than 15% relative to the aluminum nitride sintered granules each having the particle diameter.