Abstract: A continuous-flow process for the polymerization of an alkylene oxide is provided that includes: (a) Mixing an alkylene oxide (1) with a monomer solvent (12), to form a monomer solution (121); wherein the monomer solvent is a polar aprotic solvent (b) Forming a reaction mixture (3) by mixing the monomer solution with an anionic initiator (2) selected among the alkali or alkaline-earth alkoxides of general formula R-O-M, wherein, R is a straight, branched or cyclic alkyl chain, a heterocycle, a glycol or a combination of two or several of these, O is oxygen, and M is or includes at least an alkali, an alkaline-earth metal or salt thereof; (c) Allowing the reaction mixture to react, thus forming a polymerized solution (5); and (d) Separating the solvent (5s).

Abstract: Crosslinkable compositions suitable for use as adhesives or sealants contain: (A) 100 parts by weight of silane-crosslinking polymers (A1) of the formula R2—O-Z1-O—CO—NH—(CH2)—SiRa(OR1)3-a??(I) and/or polymers (A2) of the formula R4—O-Z2-O—CO—NH—(CH2)3—Si(OR3)3??(II), (B) 0 to 300 parts by weight of silane-crosslinking polymers having at least two end groups of the formula —SiR7c(OR8)3-c??(III), and also (C) 20 to 400 parts by weight of a tackifier resin.

Abstract: This document relates to functionalized (e.g., mono- or bi-functional) polymers (e.g., polyethylene glycol and related polymers) as well as methods and materials for making and using such functionalized polymers.

Abstract: Described here are blocky PEEK copolymers and corresponding synthesis methods. It was surprisingly found that synthesis of blocky PEEK copolymers in a non-solvent environment with respect to PEEK produced blocky PEEK copolymers with high degrees of functionalization and crystallinity. The blocky PEEK copolymers had an increased blocky structure, relative to corresponding PEEK copolymer synthesized with other known methods. Moreover, membranes formed from the blocky PEEK polymers are particularly desirable in fuel cell applications. For example, the membranes formed from the blocky PEEK polymers had surprisingly large ion conductivities as well as significantly improved chemical and thermal resistance, at least in part, to the improved functionalization and crystallinity.

Abstract: A meta-dielectric film usable in a capacitor includes composite molecules with a resistive envelope built with alkyl oligomeric single chain or branched chain oligomers having carbo-hydrogen or carbo-fluoro composition and a polarizable core molecular fragment inside the resistive envelope. The polarizable core has an electronic or ionic type of polarizability provided by electronic conductivity of the core molecular fragment or limited mobility of ionic parts of the core molecular fragment.

Abstract: The present disclosure discloses an organosilicon-modified polyimide resin composition, comprising an organosilicon-modified polyimide and a thermal curing agent, wherein the organosilicon-modified polyimide comprises a repeating unit represented by the following general formula (I): wherein Ar1 is a tetra-valent organic group having a benzene ring or an alicyclic hydrocarbon structure, Ar2 is a di-valent organic group, R is each independently methyl or phenyl, and the thermal curing agent is selected from the group consisting of epoxy resin, isocyanate and bisoxazoline compounds. The resultant organosilicon-modified polyimide resin composition of the present disclosure has superior transmittance, heat resistance and mechanical strength, and is suitable for producing a flexible LED filament.

Abstract: A method of making a polyetherimide including: setting a target range for the anhydride-amine stoichiometry in a reaction mixture; combining a solvent, a diamine, a bis(ether anhydride), and an optional end capping agent to form the reaction mixture wherein the reaction mixture has a polyamic acid content; analyzing the amine and anhydride end group content of the reaction mixture using near infrared vibrational spectroscopy; calculating the anhydride-amine stoichiometry; comparing the calculated anhydride-amine stoichiometry to the target stoichiometry, and, when necessary, adjusting the concentration of bis(ether anhydride) or diamine based on the comparison of the calculated anhydride-amine stoichiometry to the target stoichiometry.

Abstract: A polyetherimide composition is disclosed including a polyetherimide sulfone having a glass transition temperature of 240 to 320° C., preferably 245 to 312° C., and a particulate, thermally conductive filler composition. A layer of the polyetherimide composition resists deformation as determined by IPC method TM-650 when subjected to a lead-free solder reflow process at a temperature of greater than or equal to 260° C., preferably 260 to 350° C. A layer including the polyetherimide composition further has a thermal conductivity of 2.5 to 15 W/mK, preferably 3 to 12 W/mK, as determined in accordance with ISO 22007-2:2008.

Abstract: A polymer compound includes a first chain structure constituted by a polyamideimide and a second chain structure constituted by a vinyl polymer and bonded to terminals of the first chain structures and connecting the first chain structures together. The vinyl polymer constituting the second chain structure is a random copolymer including a bond-constituting unit having a side chain to be bonded to the first chain structure, and a non-bond-constituting unit having no side chain to be bonded to the first chain structure.

Abstract: The present disclosure relates to a polyimide-based copolymer and a polyimide-based film including the same. The polyimide-based copolymer according to the present disclosure can provide a polyimide-based film exhibiting low absorbency while having excellent heat resistance and mechanical properties.

Abstract: A curable silicone composition is disclosed. The curable silicone composition comprises: (A) a linear organopolysiloxane having at least two silicon atom-bonded alkenyl groups per molecule, wherein at least 5 mole % of all silicon atom-bonded organic groups are aryl groups; (B) an organopolysiloxane containing siloxane units represented by the general formula R13SiO1/2 where each R1 represents an independently selected monovalent hydrocarbon group, and siloxane units represented by the general formula SiO4/2, wherein the amount of alkenyl groups is at least 6% by weight; (C) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms per molecule; and (D) a hydrosilylation reaction catalyst. The curable silicone composition forms a cured product with little weight reduction, little change in hardness, and little crack generation after thermal aging.

Abstract: The invention relates to a process for producing oxamide-functional siloxanes by reacting (A) siloxanes of the general formula (I) with (B) siloxanes selected from (B1) linear siloxanes of the general formula HO[SiR2O]tH??(II) and (B2) cyclic compounds of the general formula (SiR42O)s??(III), wherein the radicals and indices have the definitions specified in claim 1, in the presence of (C) catalysts.

Abstract: Inventive organopolysiloxanes and consumer product compositions comprising such organopolysiloxanes. Such compositions can deposit effectively onto target substrates to deliver consumer-desired benefits such as conditioning, anti-wrinkle, softness, and anti-static.

Abstract: A new class of cyclotrisiloxanes having hydridosiloxanylalkyl substituents on one, two, or three of the ring silicon atoms and a method for their preparation are provided. These compounds undergo living anionic ring-opening polymerization to generate unique polymer structures.

Abstract: The present invention relates to a method for preparing a superabsorbent polymer that progresses dry mixing of fine powders and a specific powder type of polymer binder when reassembling fine powders generated during the preparation process of a superabsorbent polymer, and thus obviates the necessity for a moisture drying process after reassembling fine powders, thereby reducing thermal losses, improving productivity, and obtaining a superabsorbent polymer having excellent basic absorption properties, and a superabsorbent polymer prepared by the method.

Abstract: Methods and compositions are provided for preparation of thermoplastic gels. The compositions have a base composition including a thermoplastic gel and a softener oil and the gel has a hardness between 15 Shore 000 and 65 Shore 000. The gel may also include an additive, such as a mineral filler, an anti-tack agent, and a mixture of a mineral filler and an anti-tack agent. The softener oil may be a high molecular weight oil having a molecular weight greater than about 250 g/mol.

Abstract: Provided are an emulsion of a nitrogen atom-containing polymer or a salt thereof, the emulsion having high emulsion stability and having a low dispersity of the particle diameter of emulsified particles, and a method for producing the emulsion. Also provided is a method for producing particles including a crosslinked nitrogen atom-containing polymer or a salt thereof by using the emulsion described above.

Abstract: Ethylene-vinyl alcohol copolymer composition pellets comprise: an ethylene-vinyl alcohol copolymer; a boron compound; and a predetermined amount of at least one fisheye-suppressing component, wherein pellet surface portions of the ethylene-vinyl alcohol copolymer composition pellets have a boron compound content of not higher than 1.7 ppm on a boron basis based on the weight of the pellets. The ethylene-vinyl alcohol copolymer composition pellets are capable of suppressing occurrence of fisheyes even if being used for formation of a single-layer ethylene-vinyl alcohol copolymer film.

Abstract: The present disclosure relates to self-healing siloxane elastomers. In particular, the present disclosure relates to self-healing siloxane elastomers comprising at least one siloxane polymer reversibly crosslinked to a second siloxane oligomer or polymer.

Abstract: The present disclosure relates to silicone-coated mineral wool insulation materials, methods for making them using specific coating methods, and methods for using them. One aspect of the disclosure is a method for making a silicone-coated mineral wool, the method comprising: providing a mineral wool comprising a collection of mineral wool fibers; applying to the mineral wool a solvent-borne coating composition comprising a silicone, the silicone of the coating composition having a number-average molecular weight of at least 25 kDa; and allowing the solvent to evaporate to provide silicone-coated mineral wool.

Abstract: The present invention provides a new method by which polymers can be modified. The present invention provides a method for modifying a polymer including the step of: irradiating a reaction system containing a polymer with light to react the reaction system in a presence of a compound radical, wherein the compound radical is a radical containing one element selected from the group consisting of Group 15 elements and Group 16 elements, and a Group 17 element.

Abstract: The present invention relates to polymeric compositions that can be used for producing packaging with dynamic cushioning, with a pleasant touch, with reduced abrasive power, in which the expanded particles constituting the packaging adhere well to one another and do not come detached during use. Said compositions comprise: a) from 70% to 90% by weight of a vinyl aromatic polymer and/or copolymer, calculated with respect to (a)+(b); b) from 10% to 30% by weight of an ethylene-vinyl acetate copolymer (EVA) containing a percentage that ranges from 10% to 30% by weight of vinyl acetate, calculated with respect to (a)+(b); c) from 3 to 10 parts by weight of a blowing agent, calculated on 100 parts of component a) added to component b); said copolymer (b) being distributed in the polymer (a) in the form of particles having an average volumetric diameter ranging from 1 nm to 2000 nm.

Abstract: A construction component comprising a foamed cellular board comprising smooth exterior surfaces separated by a cellular network and cut edges, and sealed caps adhered to the cut edges on the foamed cellular boar. The board has a density of less than 0.55 g/cm3, and the cut edges on which the sealed caps are adhered are unmelted edges.

Abstract: Methods include determining a desired hysteretic curve that corresponds to a set of dynamic mechanical analysis parameters, where the desired hysteretic curve comprises elastic portions and plastic portions, and the elastic and plastic portions comprise specific desired shapes. A first tuned carbon is selected, the first tuned carbon facilitating achievement of a desired shape of a particular elastic portion of the hysteretic curve. One or more selected post-treatments is performed on the first tuned carbon to form a first post-treatment carbon, the selected post-treatment facilitating achievement of a desired shape of a particular plastic portion of the hysteretic curve. The methods also include combining the first post-treatment carbon with other materials that are used in components of the tire and curing the combination comprising the first post-treatment carbon and the other materials. Carbon and elastomer compounds are also disclosed.

Abstract: The present disclosure relates to an eco-friendly sand-made paper and a method of manufacturing thereof. In an aspect, the proposed sand-made paper can be obtained/manufactured through a method comprising the steps of treating a polymer with a solvent so as to obtain solvent treated polymer; and processing said solvent treated polymer with fine powdered sand optionally with a binder to yield said sand-made paper.

Abstract: Ethylene-vinyl alcohol copolymer pellets comprise: an ethylene-vinyl alcohol copolymer; a conjugated polyene; and 1 to 200 ppm of an alkali earth metal based on the weight of the pellets; wherein pellet surface portions of the ethylene-vinyl alcohol copolymer pellets have a conjugated polyene content of not lower than 30 ppb based on the weight of the pellets. Such ethylene-vinyl alcohol copolymer pellets are capable of reliably suppressing occurrence of minute fisheyes each having a diameter of not greater than 200 ?m.

Abstract: Sustainable thermoplastic carbohydrate-based polymeric materials, and sustainable plastic materials including an organic odor-reducing agent to counteract a slight burned carbohydrate odor resulting from inclusion of a carbohydrate-based polymeric material within the described materials. Such carbohydrate-based polymeric material may be starch-based, and the slight characteristic odor lent by such material may be that of a somewhat burned starch, such as a popcorn or caramel corn type odor. Applicant has found that this slight odor can be substantially removed by addition of a very small fraction of particular organic materials. 4-hydroxy-3-methoxybenzaldehyde (vanillin) has been found to be particularly effective, even in very small concentrations. Other freeze-dried fruit extracts (e.g., strawberry, raspberry, blueberry, etc.) may similarly be used. As little as 20 ppm of the organic odor-reducing agent is sufficient to substantially remove the characteristic burned starch odor.

Abstract: A curable liquid rubber composition having improved viscosity stability is provided. The curable liquid rubber composition includes at least one functionalized crosslinkable polymer that is liquid at 25° C., contains at least one diene monomer in polymerized form, and is functionalized with one or more anhydride functional groups, one or more hydroxyl functional groups or one or more (meth)acrylate functional groups; at least one non-functionalized crosslinkable polymer that is liquid at 25° C., contains at least one diene monomer in polymerized form, and is not functionalized with anhydride, hydroxyl or (meth)acrylate functional groups; at least one metallic monomer coagent which is a metal carboxylate salt containing at least one (meth)acrylate functional group; and at least one inorganic filler.

Abstract: Provided are a rubber composition for tires that provides improved silica dispersion and fuel economy while maintaining good hardness, and a pneumatic tire including the rubber composition.

Abstract: A process for the preparation of a rubber compound for a pneumatic tyre portion. The process comprises a first non-productive mixing step, wherein, at least one cross-linkable unsaturated-chain polymer base, silica, a silane bonding agent comprised within the class of trialkoxymercaptoalkyl-silanes are mixed together and a productive mixing step, wherein, at least a vulcanization system and Zn oxide are added and blended to the compound under preparation. The silica is functionalized with dicarboxylic acids and the first non-productive mixing step does not comprise Zn oxide.

Abstract: Provided is a rubber composition for tires having low tan ? at approximately 60° C. and excellent fracture energy at approximately 25° C.

Abstract: Described herein are methods for increasing strength of blown films, by forming the films using a film blowing apparatus where the film is formed from a blend of a first polymeric material and a renewable carbohydrate-based polymeric material having particular characteristics. By using such a blend, and ensuring that the film blowing apparatus is operated at a high blow up ratio of at least 2.0, and/or using a narrow die gap of no more than 500 microns, Applicant has discovered that increased strength in the film can be obtained, as compared to where (i) the renewable carbohydrate-based polymeric material is not included or (ii) where the film is blown at lower blow up ratios and/or wider die gaps.

Abstract: A copolymer may include ethylene and vinyl acetate, in which the ethylene is at least partially obtained from a renewable source of carbon. Embodiments may also be directed to curable polymer compositions, expandable polymer compositions, articles, cured articles, and expanded articles formed from or including such copolymers of ethylene and vinyl acetate, in which the ethylene is at least partially obtained from a renewable source of carbon.

Abstract: A polymer composition may include an elastomeric ethylene-vinyl acetate, in which at least a portion of ethylene from the elastomeric ethylene-vinyl acetate is obtained from a renewable source of carbon. A curable polymer composition, an expandable polymer composition, articles, cured articles, and expanded articles may include or be formed from such polymer composition. A process for producing a polymer composition may include polymerizing ethylene at least partially obtained from a renewable source of carbon with vinyl acetate to produce an ethylene vinyl acetate copolymer; and mixing the ethylene-vinyl acetate copolymer with an elastomeric polyolefin to produce an elastomeric ethylene-vinyl acetate.

Abstract: The present disclosure provides a low-smoke, non-halogenated flame retardant composition made from or containing (a) a first ethylene/vinyl acetate copolymer, having a total content of vinyl acetate-derived units in an amount from about 15 to about 45 weight percent, based upon the total weight of the ethylene/vinyl acetate copolymer; (b) a coupling agent; (c) magnesium dihydroxide; (d) hydromagnesite; and (e) huntite.

Abstract: Compositions may include an EVA copolymer produced from ethylene, vinyl acetate, and one or more polar comonomers, wherein at least one of the one or more polar comonomers include an amine moiety. Methods may include preparing a polymer composition by adding ethylene, vinyl acetate and one or more polar comonomers to a reactor or extruder, wherein at least one of the one or more polar comonomers include an amine moiety; and reacting the ethylene, vinyl acetate and one or more comonomers to produce the polymer composition. Compositions may include an adhesive film composition that include at least one layer including a polymer produced from ethylene, vinyl acetate, and one or more polar comonomers, wherein at least one of the one or more polar comonomers include an amine moiety.

Abstract: High flow nucleated heterophasic polyolefin compositions comprising a matrix comprising a propylene homo- and/or copolymer and an elastomeric alpha-olefin copolymer phase dispersed in the matrix, which have rather high melt flow rate, improved impact strength but also an excellent impact/stiffness balance and a process for the preparation of such a heterophasic polyolefin composition, articles made therefrom and uses of the heterophasic polyolefin composition.

Abstract: The present invention provides a process for producing a heterophasic copolymer composition. The polymerisation is conducted in the presence of an olefin polymerisation catalyst comprising a solid catalyst component further comprising titanium, magnesium, halogen and an internal donor, and a cocatalyst, the process comprising the steps of: (1) introducing streams of the solid catalyst component, the cocatalyst, propylene monomer and hydrogen into a first polymerisation reactor; (2) producing a first polymer of propylene in the first polymerisation reactor, the first polymer of propylene having a first melt flow rate MFR 2 of from 0.1 to 2.

Abstract: The present invention relates to a new composite comprising cellulose-based fiber and polymer-based fiber as well as to molded articles made from said composite.

Abstract: The present invention relates to a thermoplastic composition, e.g., for automotive parts, comprising: (A) from 10 to 69 wt. % polypropylene(s); (B) at least 30 wt. % heterophasic propylene copolymer comprising: from 70 to 92 wt. % a propylene-based matrix consisting of a polypropylene, wherein the propylene polymer has an intrinsic viscosity IVPP; from 8 to 30 wt. % dispersed ethylene-?-olefin copolymer having an ethylene content of between 10 and 55 wt and an intrinsic viscosity IVEPR; and wherein the ratio of IVEPR/IVPP is between 3 and 7; C) from 0-30 wt. % ethylene-?-olefin elastomer comprising ethylene and a C3 to C10 ?-olefin; D) from 1 up to 30 wt. % talc as a filler; E) from 0-10 wt. % high-density polyethylene (HDPE); and F) from 0-3 wt. % additional additives.

Abstract: The invention relates to a polypropylene composition (C) comprising: (i) 62 to 85 wt.-%, based on the total weight of the polypropylene composition (C), of a heterophasic propylene copolymer (HECO1) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 6.0 to 50.0 g/10 min; (ii) 10 to 30 wt.-%, based on the total weight of the polypropylene composition (C), of a heterophasic propylene copolymer (HECO2) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 0.1 to 5.5 g/10 min; (iii) 5 to 30 wt.

Abstract: The present invention aims to provide a curable resin composition which has low viscosity as well as properties such as rubber physical property and hydrogen gas barrier property. The present invention provides a curable resin composition including the following ingredients (A) to (D): ingredient (A): a vinyl-based polymer having one or more alkenyl groups in one molecule, ingredient (B): a compound having one or more hydrosilyl groups in one molecule, ingredient (C): a hydrosilylation catalyst, and ingredient (D): a plasticizer having at least two peaks in a molecular weight distribution measured by GPC.

Abstract: Elastomer compositions and, in particular, their use as compositions for forming vibration-damping devices. The elastomer compositions comprise brominated isobutylene-co-alkylstyrene, such as brominated isobutylene-co-para-methylstyrene. One or more additives including a reinforcing filler, a processing aid, a scorch retarder, a curing agent, an activator, an accelerator, and any combination thereof may be included in the elastomer composition. The elastomer compositions exhibit physical properties, heat resistance properties, and long life cycle properties making their use in vibration-damping devices particularly suitable.

Abstract: Useful articles, such as coatings, adhesives, printed graphics, 3D printed articles and molded articles are prepared by curing compositions containing one or more salts of ethylenically unsaturated carboxylic acids comprising six or more carbon atoms, one or more multifunctional (meth)acrylate oligomers and one or more mono(meth)acrylate esters of alcohols which, when polymerized as homopolymers, have glass transition temperatures of at least 50° C.

Abstract: The invention aims to provide a crosslinked polymer having an excellent liquid absorption capacity and sufficient gel-pulverizability. The invention relates to a N-vinyl lactam-based crosslinked polymer including: a structural unit derived from a N-vinyl lactam-based monomer; and a structural unit derived from triallyl cyanurate, the N-vinyl lactam-based crosslinked polymer containing the structural unit derived from triallyl cyanurate in a ratio of 0.12 to 0.48 mol % to 100 mol % of all structural units.

Abstract: The present disclosure provides a composition of matter comprising purified cyclic poly(phthalaldehyde) (cPPA) and a plasticizer. The composition enables thermal processing and molding in bulk quantities, and is designed to degrade when contacted by an acid or exposed to a high enough temperature. Photodegradable cPPA containing a photooxidant is disclosed. Methods of making and recycling the composition of matter are also provided.

Abstract: In one aspect, the invention relates to recycled polyethylene terephthalate compositions, fibers and articles produced therefrom, and methods for producing same. In a further aspect, the invention relates to homogenized post-consumer polyethylene terephthalate. In a further aspect, the invention relates to extruded polymer compositions, polymer mixtures, fibers, and/or Bulked Continuous Filament fibers comprising post-consumer polyethylene terephthalate. In a further aspect, the invention relates to processes for preparing recycled polyethylene terephthalate compositions. 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: A polyimide composition includes 1 to 99 weight percent, preferably 70 to 99 weight percent, more preferably 75 to 95 weight percent of a first polyimide; and 1 to 99 weight percent, preferably 1 to 30 weight percent, more preferably 2 to 25 weight percent of a second polyimide, wherein the first polyimide and the second polyimide are different, and wherein the polyimide composition has a melt flow rate that is greater than a melt flow rate of the first polyimide and less than a melt flow rate of the second polyimide; an apparent viscosity that is less than an apparent viscosity of the first polyimide and less than an apparent viscosity of the second polyimide; and a notched Izod impact strength that is greater than a notched Izod impact strength of the first polyimide and greater than a notched Izod impact strength of the second polyimide.

Abstract: Binder for injection moulding composition including: from 45 to 50 volume percent of a polymeric base, at least 34 volume percent of a mixture of waxes or a mixture of wax and palm oil, and from 11 to 16 volume percent of a surfactant, wherein the polymeric base contains ethylene and methacrylic or acrylic acid copolymers, or ethylene copolymers comprising a maleic anhydride or a mixture of such copolymers, in addition to polyethylene, polypropylene and an acrylic resin, the respective quantities of the binder components being such that added together, they do not exceed 100 volume percent.

Abstract: The present invention aims to provide a wax capable of improving discoloration resistance while maintaining excellent ozone resistance over a wide range of ambient temperatures; a rubber composition containing the wax; and a pneumatic tire containing the rubber composition. The present invention relates to a wax having a ratio of (A) the total amount of C23-C32 normal alkanes to (B) the total amount of C33-C40 normal alkanes (A/B) of 1.7 to 6.