Abstract: Co-cured blends of fluoroelastomers of tetrafluoroethylene-propylene copolymer with cure site monomer and terpolymers of Vinylidene fluoride (VDF), Hexafluoropropylene (HFP) and Tetrafluoroethylene (TFE) with peroxide as initiator and coagent TAIC as crosslinker show improved curing performance, improved mechanical properties and improved compression set as well. The co-cured fluoroelastomers show improved chemical resistance to the solvent aging systems and better retention of mechanical properties after aging at high temperature in the solvents system.

Abstract: Disclosed herein in various embodiments are aryl-ether free polyaromatic polymers based on random copolymer architecture with two, three, or more aromatic ring components and methods of preparing those polymers. The polymers of the present disclosure can be used as ion exchange membranes, e.g., as anion exchange membranes, and ionomer binders in alkaline electrochemical devices.

Abstract: The present disclosure relates to a preparation method of a super absorbent polymer. More specifically, it relates to a preparation method of a super absorbent polymer capable of significantly reducing the amount of fine powder generated during the process by mixing a hydrogel polymer with an additive having a specific structure, pulverizing it, and then drying it with a paddle-type dryer.

Abstract: Provided is, for example, a curable composition including: a curable compound having, in a molecule, a branched polyolefin structure, a (meth)acryloyl group, and an isocyanate group; and an alicyclic (meth)acrylate monomer having, in a molecule, a cycloalkyl structure and a (meth)acryloyl group.

Abstract: A curable liquid composition containing a particulate filler and an epoxy compound having a non-aromatic cyclic group having 5 or more annular atoms, having a favorable dispersion stability of particulate filler and providing a cured material having high hardness, a filler that is suitably incorporated in the curable liquid composition, and a compound that can be suitably used as a ligand bonded to the filler. In a curable liquid composition comprising an epoxy compound having a non-aromatic cyclic group having 5 or more annular atoms as a curable component, a filler on a surface of which a ligand having an alicyclic epoxy group that may be condensed with an aromatic ring and a thiol group, is bonded, is used.

Abstract: Embodiments of the invention relate to a resin composition, in particular suitable for printing, a kit comprising components of the resin composition, printing methods, a polymer obtained by the printing methods, an article comprising or formed from the polymer, uses thereof, and a composition. The resin composition comprises at least one compound C1 having at least one terminal alkyne functional group; at least one compound C2 having at least two thiol functional groups; at least one compound C3 having at least one carbon-carbon double bond; at least one photoinitiator; and at least one stabilizer.

Abstract: A polyurethane composition reaction mixture including: (a) at least one organic isocyanate; and (b) at least one butylene oxide-based hydrophobic polyol; a process for making the above polyurethane composition; a polyurethane composite article composition, a process for making the above polyurethane composite article composition; and a process for making a composite article from the above polyurethane composite article composition.

Abstract: Preparation method for a polyurethane optical resin and applications thereof. The preparation method for the polyurethane optical resin comprises: a raw material composition comprising isocyanate and a polythiol compound undergoes a polymerization to produce the polyurethane optical resin. The turbidity value of the isocyanate used in the raw material composition is controlled at ?2 NTU. The polyurethane optical resin produced is applicable in manufacturing optical products.

Abstract: Polyurethane foams and methods of manufacturing are described herein. The foam can include (a) a polyurethane formed by the reaction of (i) one or more isocyanates selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof, and (ii) one or more polyols; and (b) a filler. The amount of filler in the foam can be from 50 to 90% by weight, based on the total weight of the foam. The filler can include a plurality of fibers and/or a particulate filler. The polyurethane foams described herein are made without adding a surfactant to the reaction mixture. The density of the polyurethane foam can be at least 5 lb/ft3.

Abstract: Caprolactam-derived solvents for use as processing solvents and/or coalescing agents for polyurethane dispersions (PUDs). The caprolactam-derived solvents are suitable for processing solvents and coalescing agents in PUDs created through traditional PUD manufacturing processes or as coalescing agents in PUDs created through solvent-free PUD manufacturing processes. Blends of more than one caprolactam-derived solvent may be used as the processing solvent and/or coalescing agent.

Abstract: The invention relates to polycarbodiimides and to a process for their preparation using special catalysts.

Abstract: Described are polymerizable materials (e.g., compounds, prepolymers, and compositions thereof) useful in curable compositions such as anaerobically curable compositions, the compositions including adhesives, sealants, paints, coatings, and the like, as well as methods of making the polymerizable materials and using the polymerizable materials and curable compositions.

Abstract: An alkylene oxide mixture containing greater than 50% by weight ethylene oxide is continuously polymerized in the presence of a double metal cyanide polymerization catalyst and an alkoxylated initiator having a hydroxyl equivalent weight of up to 200. The catalyst remains active, producing a polyol having an equivalent weight of up to 700 with a high oxyethylene content continuously at fast reaction rates.

Abstract: A method for manufacture of PEEK-PEDEK copolymers is described herein, along with copolymers formed by the method and their use. The method includes a nucleophilic polycondensation of a mixture of dihydroxybenzene and dihydroxybiphenyl with 4,4?-dihalobenzophenone in a reaction mixture comprising sodium carbonate and potassium carbonate, in an aromatic sulfone solvent, at a reaction temperature rising to a temperature from 280° C. to 330° C. immediately prior to the addition of a reaction-stopping salt, such as LiCl or Li2SO4, to the reaction mixture. Further organic dihalide is subsequently added to the reaction mixture for end-capping of the copolymer. The resulting copolymer has reduced chain branching and reduced melt viscosity at low shear rate compared to prior art copolymer of comparable molecular mass.

Abstract: A method for preparing a poly(phenylene ether) includes feeding an oxygen-containing gas phase to a single continuous flow reactor containing a reaction mixture, and oxidatively polymerizing the reaction mixture to form a poly(phenylene ether) in the single reactor. The reaction mixture includes a phenol, a transition metal catalyst, and an organic solvent. A poly(phenylene ether) made by the method and articles including the poly(phenylene ether) are also disclosed. Methods for quantifying phenol concentration and poly(phenylene ether) molecular weight in the reaction mixture are also discussed.

Abstract: An aspect of the present invention is a resin composition containing a compound (A) having at least one group represented by the following Formula (1) in a molecule and an acenaphthylene compound (B). In Formula (1), n represents 0 to 10, Z represents an arylene group, and R1 to R3 each independently represent a hydrogen atom or an alkyl group.

Abstract: The present disclosure provides a method for modifying a polyphenylene ether resin, a laminated film composite, a laminated film, and a substrate. The method for modifying a polyphenylene ether resin using an indene oligomer to reduce the molecular weight of the polyphenylene ether to obtain an indene oligomer-modified polyphenylene ether resin. The modified polyphenylene ether with a smaller molecular weight has a lower softening point and melting point, a better interfacial adhesion, and can be better adhered to a substrate of an integrated circuit. Meanwhile, because it has a lower dielectric constant and dielectric loss, the dielectric constant and dielectric loss of the substrate can be reduced, thereby solving the technical problem of electric leakage and heat generation caused when the existing polyphenylene ether resin is applied to an integrated circuit when the feature size of the integrated circuit is reduced.

Abstract: The present application belongs to the technical field of polymer materials, and hyperbranched polylysine powder with a low polydispersity index and a production method thereof provided. The present application adopts a thermal initiation polymerization method, Compared with the traditional method, the production method of hyperbranched polylysine has the advantages of no additional steps of introducing and removing amino protecting groups, no need of activating carboxyl groups, easy purification of products, short production period, controllable molecular weight of products and low polydispersity index (1.01-1.2), and is suitable for industrial production of hyperbranched polylysine materials, especially medical-grade hyperbranched polylysine materials.

Abstract: A method of making an acid neutralizing polymer includes: a) preparing a first reaction mixture by blending of a polyamide material, a solid strongly basic material, and a halogenated-dimethylalkylamine; b) adding the first reaction mixture to a first compounding machine; c) reacting the first reaction mixture for a time and at a temperature sufficient to produce a first reaction product; d) preparing a second reaction mixture including the polyamide material; e) adding the second reaction mixture to a second compounding machine; f) reacting the second reaction mixture for a time and at a temperature sufficient to produce a second reaction product; g) preparing a third reaction mixture by blending the first reaction mixture and the second reaction mixture; h) adding the third reaction mixture to a third compounding machine; and i) reacting the third reaction mixture for a time and at a temperature sufficient to produce the acid neutralizing polymer.

Abstract: The materials and methods disclosed can be used for applications such as temporary bond and debond of semiconductor and display substrates. These materials have sufficiently low melt rheologies to be used as a bonding layer and can crosslink/cure to allow for reduction in material flow over long periods of time. This class of materials also incorporates the ability to be used as a single-layer system for debonding purposes and typically uses laser debonding for its release mechanism. These materials also allow for solvent cleanability using very mild acidic conditions instead of the typical harsh conditions used on curable layers.

Abstract: The present invention relates to novel polymer compositions which are obtained by neutralizing a polymer P having at least one functional moiety of the formula (I) bound to at least one of the termini and/or to the backbone of the polymer, with an oligomeric or polymeric amine PA having at least 2 amino groups per oligomer or polymer molecule.

Abstract: Methods and systems are provided for recovering an organic solvent from a waste sludge generated during formation of a polyarylene sulfide. Methods include combining the waste sludge with an anti-solvent to create a dispersion, which includes a solid phase that includes a substantial portion of the impurities of the polyarylene sulfide formation and a liquid phase that contains the anti-solvent and organic solvent employed during formation of the polyarylene sulfide. The liquid phase is separated from the solid phase and then subjected to a distillation process to separate the organic solvent from the anti-solvent. Methods can also include forming the polyarylene sulfide by a polymerization process and thereafter purifying a slurry of the polyarylene sulfide. A liquid washing product is formed as a result of the purification process, which can be subjected to a distillation process that forms an organic solvent-rich stream and the waste sludge.

Abstract: Described herein are wound dressing comprising a silicone hydrogel composition and optionally an antimicrobial agent, and methods of making and use thereof. The silicone hydrogel compositions comprise an actinically-crosslinkable polysiloxane-polyglycerol block copolymer crosslinked with a crosslinker. The actinically-crosslinkable polysiloxane-polyglycerol block copolymer being derived from: a polysiloxane prepolymer comprising a polyglycerol side chain, the polyglycerol side chain comprising an ethylenically unsaturated group covalently linked thereto, wherein the ethylenically unsaturated group is actinically curable.

Abstract: Disclosed is a modified preceramic polymer having a polymer backbone consisting of silicon or a combination of silicon and carbon; and a pendant modifier bonded to the backbone wherein the modifier includes silicon, boron, aluminum, a transition metal, a refractory metal, or a combination thereof. The modified preceramic polymer can be used to form a ceramic matrix composite.

Abstract: Provided are a biodegradable self-healing rubber elastomer and its preparation method, which belongs to the field of elastomeric materials. The biodegradable self-repairing rubber elastomer is prepared by a melting method in which enzymatic lignin and itaconic acid are added to lipoic acid separately, melted and blended separately, and then cooled to obtain the rubber elastomer.

Abstract: Toughened thermoplastic polymers having elastomeric domains in thermoplastic polymer may be recycled by a method comprising dissolving the thermoplastic polymer in a solvent to form a solution, wherein the elastomer is dispersed within the solution as elastomer particulates or droplets, applying a sufficient centrifugal force to the solution to separate the elastomeric particulates or droplets from the solution to form a separated system and (c) recovering the thermoplastic polymer and elastomeric polymer by removing one or both from the separated system. The recovered elastomer and thermoplastic polymer may then be reused in the same type, similar or differing plastics avoiding degradation typically found when recycling toughened thermoplastic polymers.

Abstract: The present invention relates to a polyvinyl alcohol hydrogel having an asymmetric pore size. the pore size of the upper surface of the polyvinyl alcohol hydrogel is 1-30 ?m, the pore size of lower surface thereof is 50-300 ?m, and the pore size of the hydrogel gradually increases from the upper surface to the lower surface. The polyvinyl alcohol hydrogel in the present invention has excellent biocompatibility, and has functions of blocking bacteria, anti-adhesion, the absorption of exudate, promoting wound healing, observing in situ of wound healing process and the like.

Abstract: A process for compounding a thermoplastic composition comprising performance additives for use in additive manufacturing.

Abstract: A method of forming a composite material includes mixing granules of thermoplastic(s) and granules of reinforcing material(s) using a mixer with an interior friction coating. The friction generated by interaction between the granules and friction coating causes granules of at least one of the thermoplastic(s) to be heated to a liquid or semi-liquid state. The liquid/semi-liquid thermoplastic(s) act a binder for the mixed material. A system for forming such a composite material includes such a mixer with an interior friction coating. The system may also include a mould and/or a press for forming material produced by the mixer into a finished shape. The method and system may use post-consumer and post-industrial material as an input allowing such material to be recycled. In some cases, cross-contaminated or mixed post-consumer/post-industrial material may be recycled, potentially reducing environmental impacts.

Abstract: The invention relates to a block co-polymer film having different morphologies within said film, uses thereof and processes for its preparation.

Abstract: The embodiments relate to a polyamide-based composite film with excellent curl characteristics, mechanical characteristics, and optical characteristics. The polyamide-based composite film comprises a base film comprising a polyamide-based polymer and a functional layer disposed on the base film, wherein when the polyamide-based composite film is placed on a surface light source such that the base film is in contact with the surface light source, light is irradiated from the surface light source, and the luminance value measured in the normal direction of the surface light source is 100%, the luminance value measured in the direction of 50° from the normal direction of the surface light source is 25% or more.

Abstract: Provided is a composite prepreg including a region (A) containing a thermosetting resin (a) and a reinforcing fiber and a region (B) containing a thermosetting resin (b) and a reinforcing fiber, the composite prepreg satisfying conditions (i) and (ii) or satisfying conditions (ii) and (iii): (i) The thermosetting resin (b) is a resin having a gel time Tb longer than a gel time Ta of the thermosetting resin (a), and in at least a part of a temperature range of 40° C. or more and 180° C. or less, satisfy Ta/Tb?0.8; (ii) A ratio of the region (A) on a surface of the composite prepreg is 20 to 80%; and (iii) The thermosetting resin (b) is a resin having a higher heat generation starting temperature Eb than a heat generation starting temperature Ea of the thermosetting resin (a), and in a differential scanning calorimetry chart obtained by measuring at 5° C./min with 40° C. as a starting temperature, satisfy Eb?Ea?30.

Abstract: A battery module comprising an electric cell and a potting compound associated with the electric cell. The potting compound is formed of a flame retardant component; a first component having an isocyanate reactive compound and water; and a second component having an isocyanate compound. The potting compound is a foam.

Abstract: Aspects of the present disclosure relate to a polyolefin composition and processes suitable for use in forming a lid for a hot food or beverage container that has a stiffness comparable to a similar lid made using high impact polystyrene and a density less than water at 23° C.

Abstract: This disclosure generally provides compositions with improved flammability resistance and processes for preparing these compositions, wherein the resin composition comprising: (a) a polyfunctional isocyanate; (b) an isocyanate reactive composition comprising (b1) a polyfunctional polyol and a catalyst composition; and/or (b2) a polyfunctional amine; and (c) a benzoxazine component solved in the resin composition.

Abstract: Provided is a method of producing a porous body of a water-insoluble polymer, the method being excellent in terms of simplicity and capable of suppressing formation of a skin layer. A method of producing a porous body of a water-insoluble polymer disclosed here includes the steps of: preparing a solution in which a water-insoluble polymer is dissolved in a mixed solvent containing a good solvent for the water-insoluble polymer and a poor solvent for the water-insoluble polymer; coating the solution on a substrate; coating a slurry containing insulating particles, a binder and a dispersion medium on the coated solution; and simultaneously drying the coated solution and the slurry to porosify the water-insoluble polymer. The poor solvent has a boiling point higher than a boiling point of the good solvent. The dispersion medium can dissolve the water-insoluble polymer.

Abstract: A curable composition comprises oxidized boron nitride particles and a polyaziridine. Each oxidized boron nitride particle comprises a hydrated boron oxide surface layer disposed on a boron nitride core. A method of curing and a cured reaction product are also disclosed.

Abstract: A composition contains an aryl-functionalized polysiloxane and quaternary ammonium compound, where the quaternary ammonium compound has an anion selected from a group consisting of: halides, salicylate, octanoate, acetate, dihydrogen citrate, maleate, hydrogenglutaric acid anion, and bistartaric acid anion.

Abstract: The invention describes a composition containing a) a functionalized polymer (10) that comprises at least one polymer segment (13) and at least two polymer aggregating segments (11,12) capable of forming non-covalent bonds based on a supramolecular interaction, b) an aggregating additive (20) that comprises at least one additive aggregating segment (21) capable of forming non-covalent bonds based on the same supramolecular interaction as the polymer aggregating segments (11,12), wherein the polymer aggregating segments (11,12) and the additive aggregating segment (21) are ditopic, wherein the polymer aggregating segments (11,12) and the additive aggregating segment (21) are designed such that they can form aggregates (31) that contain polymer aggregating segments (11,12) and additive aggregating segments (21), and wherein the aggregating additive (20) has a molecular weight of from 50 g/mol to 2000 g/mol.

Abstract: A rubber compounding ingredient containing (A) a compound having a blocked isocyanate group and a hydrolyzable silyl group, such as an organosilicon compound having the following formula (1): wherein R1 is each independently an alkyl group having 1 to 8 carbon atoms, L is a divalent linking group, X is —O— or —NR2—, Z is a hydrogen atom or a monovalent organic group, R2 is a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a group capable of bonding to Z to form a ring structure, and m is an integer of 1 to 3.

Abstract: Disclosed is a rubber composition which suppresses poor mixing or poor dispersion from occurring between an organic polymer material derived from natural rubber and an inorganic material such as silica and exhibits excellent viscoelastic properties, and a silane coupling agent composition used in the same. Also disclosed is a silane coupling agent composition comprising a protein modifying agent and a silane compound represented by Formula (1): wherein each of the variables is as defined herein.

Abstract: A method of producing a thermoplastic elastomer includes providing a polyether composition comprising at least a first diol terminated polyether having a number average molecular weight of 400-6000 and up to 15 wt % of fumed silica having C1-C8 alkylsilyl groups or acrylate or methacrylate ester groups at its surface, combining the polyether composition with optional additional first polyether and either a) at least one dicarboxylic acid and at least one organic diol having a molecular weight less than 250 or b) at least one dicarboxylate terminated polyamide, to form a prepolymer composition, and allowing the prepolymer composition to polymerize to form a thermoplastic elastomer.

Abstract: Provided is a cellulose composition, including a plurality of biocelluloses, wherein a diameter of the biocelluloses ranges from 20 to 30 nanometer, and a length of the biocelluloses ranges from 2000 to 3000 nanometer. The biocelluloses have good biocompatibility and can effectively enhance the efficiency of absorption and transmission of substances.

Abstract: Resin particles include mother particles containing a biodegradable resin, and a coating layer containing at least one selected from the group consisting of a quaternary ammonium salt-containing polymer, polyacrylamide, polyvinylpyrrolidone, and polylysine on a surface of the mother particles.

Abstract: The invention provides a peroxide crosslinkable rubber composition including a hydrogenated nitrile rubber that is enhanced in scorch stability without deterioration in superior characteristics of crosslinked products of the composition. The invention also provides a crosslinked product of such a rubber composition. The rubber composition includes 100 parts by mass of a hydrogenated nitrile rubber (A), 5 to 100 parts by mass of a filler (B), 1 to 10 parts by mass of an organic peroxide (C), and 1 to 20 parts by mass of a liquid diene rubber (D) having a polystyrene-equivalent weight average molecular weight of 3,000 to 120,000 as measured by gel permeation chromatography (GPC).

Abstract: A rubber compound for body ply skim comprising: —a mix of rubber consisting of (i) Epoxidized Natural Rubber acting as polymer base with a cross-linkable unsaturated chain; (ii) Natural Rubber acting as polymer base with a cross-linkable unsaturated chain; (iii) Polyepihalohydrin rubber, —a filler material, and—a vulcanization system; The compound comprises: 70 to 90 phr of said Polyepihalohydrin rubber; 5 to 25 phr of said Epoxidized Natural Rubber (E-NR); and 5 to 25 phr of said Natural Rubber (NR); the phr ratio between E-NR and NR ranging from 0.2 to 5.0.

Abstract: A foam bead is formed from a composition comprising an ionomer comprising, in polymerized form, ethylene, an unsaturated acid comonomer and, optionally, an acrylate comonomer, wherein the unsaturated acid comonomer is at least partially neutralized with a neutralizing agent. A sintered foam structure is formed from foam beads that are formed from above composition.

Abstract: Provided are: a composition that can impart a thermoplastic resin with excellent transparency and physical properties; a thermoplastic resin composition containing the same; and a molded article thereof. The composition contains: (A) a cyclic organophosphate aluminum salt represented by Formula (1) below, wherein R1 to R4 each independently represent a hydrogen atom or a linear or branched alkyl group having 1 to 9 carbon atoms, and R5 represents an alkylidene group having 1 to 4 carbon atoms; and (B) sodium carboxylate, wherein a molar ratio of the (A) cyclic organophosphate aluminum salt represented by Formula (1) and the (B) sodium carboxylate, (A)/(B), is in a range of 0.20 to 0.56.

Abstract: A polyolefin composition made from or containing: T1) 50-90 wt % of a recycled polyolefin mixture; and T2) 10-50 wt % of a polyolefin component containing: A) 5-35% by weight of a propylene homopolymer or a propylene ethylene copolymer; B) 20-50% by weight of a copolymer of ethylene and a C3-C8 alpha-olefin made from or containing 0.1-20% by weight of alpha-olefin units; and C) 30-60% by weight of a copolymer of ethylene and propylene made from or containing 25-75% by weight of ethylene units.

Abstract: The present invention relates to a maleimide resin composition containing (A) one or more selected from the group consisting of a maleimide compound having one or more N-substituted maleimide groups and a derivative thereof; and (B) a polymer having a hydrocarbon chain or a polyether chain in a main chain thereof, wherein the component (A) contains (A1) a maleimide compound having one or more N-substituted maleimide groups and a molecular weight of less than 600 and (A2) a maleimide compound having one or more N-substituted maleimide groups and a molecular weight of 600 or more. The present invention also relates to a prepreg, a laminated board, a resin film, a printed wiring board, and a semiconductor package that are obtained by using the maleimide resin composition.