Abstract: Polar modifier systems based on a blend of DTHFP, ETE, TMEDA, DMTHFMA and/or functionally similar compounds with BDMAEE and SMT are used to make block copolymers having high levels of pendant vinyl double bond repeat units, which is through highly selective 1,2-bond butadiene addition, low vinylcyclopentane formation, unimodal narrow molecular weight distribution, and a low level of randomized co-monomer repeat units. The block copolymers have very high levels of 1,2-vinyl content and high 3,4-vinyl bond addition of the conjugated diene monomer and low vinylcyclopentane content. The polar modifier systems provide a fast polymerization rate, with a unimodal narrow molecular weight distribution. The polar modifier systems allow operation at a higher temperature than in prior art systems, which reduces cooling requirements.

Abstract: A composition includes one or more copolymers of one or more vinylidene aromatic monomers and one or more unsaturated compounds containing nucleophilic groups, and the copolymer has on average about 0.01 to about 15.0 percent by weight of nucleophilic groups pendant from the copolymer. The copolymer is chain extended and/or branched by one or more copolymers of one or more vinylidene aromatic monomers and one or more unsaturated compounds having electrophilic groups, or a portion of the chains of the copolymer of one or more vinylidene aromatic monomers and one or more nucleophilic groups are crosslinked with other chains of the copolymer of one or more vinylidene aromatic monomers and one or more nucleophilic groups by ionic bonding of anions formed from the pendant nucleophilic groups with a metal cation having a valence of 2 or greater or complexation between pendant acid groups and metal oxides.

Abstract: A thermoplastic elastomer composition and method of making the thermoplastic elastomer are disclosed. The thermoplastic elastomer may comprise a polymer blend. The polymer bland may comprise a non-crosslinked elastomer, oil, polyethylene, and anti-oxidant. The oil may be from about 15 wt. % to about 50 wt. % oil. The polyethylene may be from about 3 wt. % to about 30 wt. %. The anti-oxidant may be from about 0 to about 0.5 wt. %.

Abstract: A phenylvinylsilane-divinylbenzene-styrene terpolymer is prepared by copolymerizing 50 parts by weight to 70 parts by weight of phenylvinylsilane, 10 parts by weight to 20 parts by weight of divinylbenzene and 20 parts by weight to 30 parts by weight of styrene, the total amount of phenylvinylsilane, divinylbenzene and styrene being 100 parts by weight, wherein the phenylvinylsilane has a structure of Formula (I) or Formula (II). Moreover, a resin composition includes a phenylvinylsilane-divinylbenzene-styrene terpolymer and a vinyl group-containing polyphenylene ether resin. The resin composition may be used to make various articles, such as a prepreg, a resin film, a laminate or a printed circuit board.

Abstract: A styrene-isoprene/butadiene diblock copolymer contains a polystyrene block and a polyisoprene/butadiene block. Based on 100 wt % of the styrene-isoprene/butadiene diblock copolymer, the polystyrene block is 20-45 wt %, and the polyisoprene/butadiene block is 55-80 wt %. The polyisoprene/butadiene block has a polyisoprene unit and a polybutadiene unit. The weight ratio of the polyisoprene unit to the polybutadiene unit is 8:2 to 2:8.

Abstract: The present disclosure relates to a surface protective film and a method for manufacturing an organic light emitting electronic device using the surface protective film.

Abstract: The invention is related to polypropylene compositions combining high impact strength with good haze and additionally showing good stress whitening resistance.

Abstract: The present disclosure relates to a latently reactive conductive polyurethane-based adhesive film.

Abstract: A resin molded article having a microphase-separated structure, the resin molded article containing a polyimide resin (A) and a polyether ketone resin (B), the polyimide resin (A) containing repeating structural units of formulae (1) and (2): wherein R1 represents a divalent group having from 6 to 22 carbon atoms containing at least one alicyclic hydrocarbon structure; R2 represents a divalent chain aliphatic group having from 5 to 16 carbon atoms; and X1 and X2 each independently represent a tetravalent group having from 6 to 22 carbon atoms containing at least one aromatic ring, a content ratio of the repeating structural unit of formula (1) with respect to the total of the repeating structural unit of formula (1) and the repeating structural unit of formula (2) is 20 to 70 mol %, and a weight average molecular weight Mw is 40,000 to 150,000.

Abstract: New compositions of tissue-equivalent three-dimensional polymer gel dosimeters based on acrylamide (AAm), N-isopropylacrylamide (NIPAM), N-(Hydroxymethyl)acrylamide (NHMA), diacetone acrylamide (DAAM) and N-Vinylcaprolactam (NVCL) monomer with ethylene glycol co-solvent have been introduced in this invention for radiotherapy dosimetry. The dosimeter was irradiated with 6 and 15 MV linear accelerator at absorbed doses up to 10 Gy. The nuclear magnetic resonance (NMR) spin-spin relaxation rate (R2) for water proton surrounding polymer formation was used to investigate the degree of polymerization of the five gels. The effect of additives, dose rate, radiation energy, stability of the polymerization after irradiation, were investigated on the dose response of the gels.

Abstract: The present invention provides a preparing method of a polymer which is low-toxic, environmental-friendly, highly controllable, and low cost to obtain a polymer with high molecular weight. The preparing method comprises conducting a controlled radical polymerization process of monomer (Y). In the controlled radical polymerization process, organic compound (A) which has the formula (I) and radical initiator (B) are existing in a mole ratio (B/A) ranged from 0.5 to 25, wherein R1 is a hydrogen atom, alkyl group, aryl group, or hydroxyl group, the alkyl group can be alkyl having substituents or alkyl substituent, and the aryl group can be aryl having substituents or aryl substituent.

Abstract: Polypropylene composition having a melting temperature Tm of 135° C. to 140° C. (DSC according to ISO 11357/part 3), —an MFR2 of 0.05 to 0.50 g/10 min (2.16 kg, 230° C., IS01133), a XS according to IS016152 of 0.2 to 2.5 wt.-%, and a molecular weight distribution Mw/Mn of at least 2.8 and less than 6.0, wherein Mn is the number average molecular weight and Mw is the weight average molecular weight both being determined by Gel Permeation Chromatography (GPC) according to ISO 16014-4:2003, and ASTM D 6474-99, whereby the polypropylene composition comprises units derived from 1-hexene in an amount of 1.80 wt.-% to 5.0 wt.-%.

Abstract: Disclosed by the present invention are an anti-aging polar rubber composition, a processing method therefor and an application thereof. The rubber composition comprises: a rubber matrix and a compounding component. In parts by weight, every 100 parts of the rubber matrix comprise 0-99 parts of highly branched polyethylene P1, 0-100 parts of P2, which is a reactant of the highly branched polyethylene P1 and a polar monomer, 0-50 parts of P3, which is a reactant of a copolymer of ethylene and ?-olefin and a polar monomer, and 0-50 parts of P4, which is a reactant of a binary, ternary or higher multipolymer of mono-olefin and diene monomer and a polar monomer, and the sum of the contents of P1 and P2 is 50-100 parts; and P1 is an ethylene homopolymer with a branched structure, and has a branching degree of not less than 50 branches/1000 carbons; and the compounding component comprises a vulcanization system.

Abstract: The present invention relates to a polybutylene terephthalate composition, comprising as component (A) polybutylene terephthalate (PBT) resin, as component (B) polyester copolymer with melting point from 105° C. to 185° C., as component (C) vinyl-based polymer, and optionally as component (D) glass bubbles. The present invention also relates to a composite of plastic/metal hybrid, which comprises metal article and the polybutylene terephthalate composition of the present invention which is joined to and integrated with the metal article.

Abstract: A method of operating a polyethylene reactor system includes feeding ethylene, an optional first comonomer, a diluent, and a chromium-based catalyst to a first polymerization reactor. The method further includes contacting ethylene and the comonomer with the catalyst in the first polymerization reactor to form a first product including a first polyethylene. The method further includes feeding the first product from the first polymerization reactor to a second polymerization reactor. The method further includes contacting ethylene and a second optional comonomer with catalyst from the first reactor in the second polymerization reactor to form a second product including the first polyethylene and a second polyethylene. The method further includes controlling one or both of a molecular weight or a breadth of molecular weight distribution of the second product by adjusting a rate of hydrogen fed to one or both of the first polymerization reactor or the second polymerization reactor.

Abstract: A 3D-printable blend comprising a thermoplastic elastomer and a polymer. The thermoplastic elastomer is selected from poly(styrene-b-isobutylene-b-styrene) (SIBS), poly(St-b-butadiene-b-St) (SBS), poly(St-b-isoprene-b-St) (SIS), and their hydrogenated derivatives. The polymer is selected from polystyrene (PSt), poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) and blends of PSt and PPO. The blends may be made into filaments suitable for use in the production of 3D printed articles.

Abstract: A multilayered dielectric film includes a plurality of nanolayers, with at least one first type of layer including traditional dielectric films and at least one second type of layer including high heat stability polymers. The consultant layered film demonstrates an improved storage modulus and decreased dissipation factor at high temperatures. The at least one first type of layer and the at least one second type of layer differ in dielectric permittivity by a factor of between approximately 0.5 and approximately 1.5 times.

Abstract: Disclosed is a polymeric composition that can include at least 95 wt. % of a polypropylene copolymer, and 50 ppm to 2000 ppm of an aryl amide containing clarifying agent, a phosphate ester salt containing clarifying agent, or a combination thereof. The polymeric composition can have a haze value of A after being extruded once and a haze value of B after being extruded 2 times, wherein the ratio of A to B is 1 to 1.35, wherein A is less than 25%, and wherein A and B are determined in accordance with ASTM D1003, at a thickness of about 40 mil.

Abstract: A polymer blend membrane includes a polyether-based copolymer and a polyether polymerized in situ and has high permeability and high selectivity for carbon dioxide. In the polymer blend membrane, the free volume of the polyether-based copolymer is greatly increased, and the adsorption capacity for carbon dioxide is enhanced. Thus, it can have excellent mechanical properties and excellent permeability and selectivity for carbon dioxide.

Abstract: The present invention relates to a consolidated nonwoven consolidated by treatment with an aqueous binder composition comprising: a polymer P, a polyvinyl alcohol, optional a starch compound S and optional at least one metal compound M selected from the group consisting of magnesium, calcium and zinc, in the form of an oxide, hydroxide, carbonate or bicarbonate, wherein the polymer P is obtainable by free radical aqueous emulsion polymerization of a monomer mixture of 75 to 99% by weight of one or more monomers a) selected from the group consisting of esters of acrylic and/or methacrylic acid with alkanols of 1 to 12 carbon atoms, aliphatic conjugated diene and aromatic vinyl compound 1 to 25% by weight of one or more monomers b) selected from the group consisting of N-methylolacrylamide, N-methylolmethacrylamide, glycidyl methacrylate and carboxylic acid-functional ethylenically unsaturated monomers ?0 to 15% by weight of one or more further ethylenically unsaturated monomer c) different from any of mon