Abstract: Disclosed are membranes formed from self-assembling diblock copolymers of the formula (I): wherein R1 is C1-C22 alkyl, R2 is C6-C20 aryl or heteroaryl, one of R3 and R4 is a C6-C14 aryl and the other is C1-C22 alkoxy, and n and m are independently about 10 to about 2000, which find use in preparing nanoporous membranes. Embodiments of the membranes contain the diblock copolymer that self-assembles into a cylindrical morphology. Also disclosed is a method of preparing such a membrane which involves spin coating a polymer solution containing the diblock copolymer to obtain a thin film, followed by annealing the thin film in a solvent vapor and/or soaking in a solvent or mixture of solvents to form a nanoporous membrane.

Abstract: Disclosed are self-assembling block copolymers including diblock copolymers of the formula (I): wherein R1 is C1-C22 alkyl, R2 is C6-C20 aryl or heteroaryl, one of R3 and R4 is C6-C14 aryl and the other is C1-C22 alkoxy, n and m are independently 2 to about 2000. The copolymers find use in preparing nanoporous membranes. Embodiments of the membranes contain the diblock copolymer in a self-assembled nanostructure of cylindrical morphology. Also disclosed is a method of preparing such copolymers.

Abstract: An extended film and a manufacturing method thereof are provided. The extended film includes a poly(lactic acid) and a block copolymer, wherein the block polymer includes a first block, a second block and a third block that connected with each other by chemical bonds. The extended film is formed by steps of mixing poly(lactic acid) and the block copolymer to form a mixture, compressing the mixture to form a board body and extending the board body to form an extended film, thereby forming an extended film having properties of high thermal-resistance and high transparency, the film thus obtained is applicable for packaging use.

Abstract: A two-part adhesive composition exhibiting improved elasticity wherein its composition includes one or more acrylate or methacrylate ester monomers, a sulfur bearing compound, preferably a sulfonyl chloride, an amine promoter, preferably, an amine aldehyde reaction product, and a thermoplastic block copolymer component selected from the group consisting of a. a linear styrene-butadiene-styrene copolymer b. a radial styrene-butadiene-styrene block copolymer with a plasticizer, c. a linear or radial styrene-isoprene-styrene block copolymer, and d. a linear or radial styrene-butadiene-isoprene-styrene block copolymer, and mixtures thereof.

Abstract: The present invention is directed to a polymer blend, the blend including a diene-based elastomer grafted with a substituted acrylamide polymer through a sulfur atom, and from 1 to 20 percent by weight of an additional polymer miscible with the substituted acrylamide polymer.

Abstract: A flexible tubing material includes a radiation crosslinked blend of a first elastomeric polymer including a styrenic thermoplastic elastomer, an ethylene vinyl acetate elastomer, a polylefin elastomer with a second elastomeric polymer including a polyolefin elastomer, a diene elastomer, or combination thereof, with the proviso that the first elastomeric polymer and the second elastomeric polymer are different. In an embodiment, a method of making a material includes providing the first elastomeric polymer, providing the second elastomeric polymer, blending the first elastomeric polymer and the second elastomeric polymer, extruding or injection molding the blend, and crosslinking the blend with radiation.

Abstract: Phosphorus free polycarbonate compositions having flame retardant properties and a desirable balance of flow, impact resistance, and heat deflection properties are disclosed.

Abstract: Disclosed herein is a block copolymer comprising a first block derived from a vinyl aromatic monomer; and a second block derived from an acrylate monomer; where a chi parameter that measures interactions between the first block and the second block is greater than or equal to about 0.05, when measured at 240° C. Disclosed herein too is a method comprising polymerizing a vinyl aromatic monomer to form a first block; and polymerizing a second block onto the first block to form a block copolymer; where the second block is derived by polymerizing an acrylate monomer; and where the block copolymer has a chi parameter of greater than or equal to about 0.05, when measured at 240° C.; where the chi parameter is a measure of interactions between the first block and the second block.

Abstract: The present invention provides a hydrogenated block copolymer which has an excellent balance in a transparency, optical property, flexibility, mechanical property, moldability, heat resistance, gas barrier property, low moisture absorbency and non-adsorptive property of chemical. Also, the present invention has an object to provide a resin composition containing the hydrogenated block copolymer as a resin component, and a film and container containing the composition. The present invention relates to a hydrogenated block copolymer containing a Block A of a hydrogenated vinyl aromatic polymer and a Block B of a polymer containing isobutylene.

Abstract: A thermoplastic molding composition characterized by its flame retardance and impact strength is disclosed. The composition contains A) 70 to 99 parts by weight of aromatic poly(ester) carbonate B) 1 to 30 parts by weight of polyalkylene terephthalate, the total weight of A) and B) being 100 parts resin, and C) 1 to 20 parts per hundred parts resin (phr) of graft (co)polymer having a core-shell morphology, including a grafted shell that contains polymerized alkyl(meth)acrylate and a composite rubber core that contains interpenetrated and inseparable polyorganosiloxane and poly(meth)alkyl acrylate components, D) 2 to 20 phr of a phosphorous-containing compound, and E) 0.1 to 2 part by weight of fluorinated polyolefin.

Abstract: A star polymer is produced by converting a central compound having at least three functional groups X, an arylene compound having two functional groups Y, and a terminal group compound having a functional group Z, the functional groups X of the central compound each reacting with a functional group Y of the arylene compound, forming a covalent bond, and the functional group Z of the terminal group compound reacting with a functional group Y of the arylene compound, forming a covalent bond, the terminal group compound being used in a stoichiometric quantity that corresponds essentially to the stoichiometric quantity of the functional groups X of the central compound, and to a method for producing star polymers, a polymer mixture including star polymers, and to the use of star polymers.

Abstract: The present invention relates to molding and overmolding compositions for delicate components. More particularly the invention relates to compositions for low pressure molding and overmolding, making these compositions particularly well suited for electronic devices. The molding and overmolding composition is suitable for low pressure injection molding processes, particularly at 0.5 to 200 bars at 70° C. to 240° C.

Abstract: The present invention relates to a polymer blend composition comprising a dielectric elastomer, an actuator film manufactured using the same, and an actuator comprising the film. The polymer blend composition according to the present invention comprises a block copolymer having excellent compatibility with the dielectric elastomer and excellent dielectric properties, and thus displacement values suitable for the purpose can be obtained by a simple method of adjusting a composition of the polymer blend. Moreover, the film manufactured using the same has high dielectric constant, low dielectric loss and high electromechanical displacement, and thus the film exhibits excellent dielectric properties when it is applied in a dielectric layer for an actuator.

Abstract: There is provided a resin composition affording a melt-molded article having excellent gas barrier properties and flex crack resistance. The present invention relates to a resin composition comprising a polyvinyl alcohol resin (A) having a 1,2-diol structural unit represented by the following general formula (1), a styrene-based thermoplastic elastomer (B), and a polyamide graft block copolymer (C) containing a polymer block of an aromatic vinyl compound and a polymer block of an olefinic compound in a main chain and having a graft chain composed of a polyamide: wherein each of R1, R2, and R3 independently represents a hydrogen atom or an organic group, X represents a single bond or a linking chain, and each of R4, R5, and R6 independently represents a hydrogen atom or an organic group.

Abstract: The invention relates to a functionalized diene elastomer composed a) of a specific block copolymer functionalized, at the chain end or in the middle of the chain, by a tin functional group, b) of a specific block copolymer star-branched by tin and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a specific non-tin-functional block copolymer.

Abstract: Modified phenolic resins and processes for producing these are described, as also are phenolic-resin formulations which comprise the modified phenolic resins, and processes for producing these. Specific uses of appropriate phenolic resins and, respectively, phenolic-resin formulations, and the use of block copolymers for producing phenolic resins, are also described.

Abstract: This invention relates to shape memory block copolymers comprising: at least one switching segment having a Ttrans from 10 to 70° C.; and at least one soft segment, wherein at least one of the switching segments is linked to at least one of the soft segments by at least one linkage, and wherein the copolymer transforms from a first shape to a second shape by application of a first stimulus and the copolymer transforms back to the first shape from the second shape by application of a second stimulus. The shape memory block copolymers may be biocompatible and biodegradable.

Abstract: The invention relates to a composition of ionisable fluoropolymers, in particular to polymer compositions comprising: a) at least one fluorinated ionisable polymer (A), which comprises recurring fluorinated blocks and recurring functional blocks, each of said recurring functional blocks comprising at least one ionisable anionic group, and in which polymer (A) at least one of the said recurring functional blocks is comprised between two fluorinated blocks; b) at least one fluorinated ionisable polymer (B), which comprises recurring fluorinated blocks and recurring functional blocks, each of said recurring functional blocks comprising at least one ionisable cationic group, and in which polymer (B) at least one of the said recurring functional blocks is comprised between two fluorinated blocks; wherein the ratio between the ionic equivalents of polymer (A) and the ionic equivalents of polymer (B) ranges from 1.1 to 0.9.

Abstract: A method of manufacturing a puncture resistant leakless material for tubeless tires, the puncture resistant leakless material manufactured thereof, and a method of spray coating the puncture resistant leakless material to tires are described. Thermoplastic elastomers are used as the framework material for the puncture resistant leakless material. The puncture resistant leakless material resists high temperature, low temperature, oil, and water, has high leakproof properties, and has low manufacturing costs. The puncture resistant leakless material also has a high tear resistance, a great resilience, and a long service life. The raw materials for manufacturing the puncture resistant leakless material fir tubeless tire do not need to undergo vulcanization, resulting in reduced energy consumption and lowered manufacturing costs.

Abstract: Copolymer are formed by polymerizing C4 to C7 isoolefin monomers and alkyl-styrene monomers. The method comprises first providing feed streams into a reactor. The various feed streams provide monomers, a polar diluent or polar diluent mixture, and a catalyst system into the reactor. In the reactor, the feed streams contact one another so that the monomers form a polymer in a stable slurry, wherein the amount of polymer in the slurry yields a slurry concentration greater than 22 wt %. The ratio of moles of polymer formed per mole initiator is in the range of 0.25 to 4.0 moles polymer per mole of initiator.