Abstract: To provide a catalyst composition having high polymerization activity. To provide a polymer manufacturing method. To provide a polymer manufactured by the polymer manufacturing method. To provide a rubber composition including the polymer. To provide a tire using the rubber composition. A catalyst composition including a compound represented by Structural Formula I below, wherein the compound has an OH group at at least one position of the bipyridyl ring; M is a transition metal, a lanthanoid, scandium, or yttrium; R1 and R2 are a hydrocarbon group having one or more carbon atoms or a halogen atom; and R1 and R2 may be the same or different from each other. A polymer manufacturing method including a step of polymerizing one or more selected from the group consisting of a conjugated diene compound and a compound having an ethylenically unsaturated double bond in the presence of the catalyst composition. A polymer manufactured by the manufacturing method. A rubber composition including the polymer.

Abstract: Provided is a process for forming a polymer composition, wherein the process comprises (a) providing a slurry in an aqueous medium, wherein the slurry comprises (i) pellets comprising a polyolefin block copolymer, wherein the block copolymer comprises a crystalline block and an amorphous block, (ii) one or more vinyl monomers, (iii) one or more initiator, wherein the slurry comprises, by weight based on the total weight of the slurry, 0 to 0.01% of all surfactants, and 0 to 0.01% of all water-soluble polymers; and (b) polymerizing the one or more vinyl monomers.

Abstract: A thermoplastic polymer alloy compositions including a blend of polymers that each contribute beneficial properties to the compositions. The compositions exhibit characteristics desirable for outdoor applications such as weatherability, impact resistance and durability, while offering excellent surface appearance. The compositions are particularly suitable for decking applications and as capstock materials.

Abstract: The present invention refers to a method for preparing a solid polymer electrolyte based on modified cellulose, the method comprising the steps of: a) lithiation or sodiation of at least a hydroxyl group of each repeating unit of a “cellulose” to obtain Li(cellulose) or Na(cellulose); b) functionalization of the Li(cellulose) or Na(cellulose) obtained in step a), in the presence of an aprotic solvent by reacting it with an organic linker, wherein the organic linker serves to covalently attach at least one organic salt to the “cellulose”, and the use of the solid polymer electrolyte in lithium or sodium secondary batteries.

Abstract: The present invention relates to a process for the production of copolymers comprising: (i) forming a reaction mixture comprising an elastomer and a vinyl aromatic compound; (ii) introducing the reaction mixture to a reaction vessel; and (iii) performing a polymerisation reaction wherein steps (i)-(iii) are performed in that order to obtain a copolymer comprising: (a) a phase comprising a reaction product of the elastomer with the vinyl aromatic compound; and (b) a phase comprising a reaction product of the vinyl aromatic compound wherein a sample of the reactor contents is obtained during step (iii) to determine of the formed copolymer: the content of phase (b); and/or ? the molecular weight of phase (b) wherein the determination of the content of phase (b) in the formed copolymer and the molecular weight of phase (b) is performed by a method comprising isolation of phase (b) from the sample of the formed copolymer and subjecting the obtained phase (b) to molecular analysis.

Abstract: The invention pertains to a method for manufacturing a fluoroelastomer (A), wherein fluoroelastomer (A) is a (per)fluoroelastomer, where such method includes (a): polymerizing in an aqueous emulsion in the presence of a surfactant by feeding the following ingredients into a first reactor: (i) a monomer mixture (M1) comprising at least one monomer (F), wherein monomer (F) is a fluoromonomer, (ii) at least one iodinated and/or brominated chain-transfer agent(s), (iii) at least one branching agent possessing at least two ethylenic unsaturations; and (iv) at least one radical initiator, so as to obtain a pre-polymer latex (P); (b): recovering latex (P) from the first reactor and storing the recovered latex (P) in a storage tank; (c): feeding the recovered latex (P) from the storage tank into a second reactor; (d): polymerizing in the second reactor at least a second monomer mixture (M2) comprising at least one monomer (F) in the presence of a radical initiator, so as to obtain a final latex (F); and (d):

Abstract: The present disclosure relates to a novel Group 5 metal compound, a method for preparing the Group 5 metal compound, a precursor composition for depositing a Group 5 metal-containing layer containing the Group 5 metal compound, and a method for depositing a Group 5 metal-containing layer using the precursor composition for depositing a Group 5 metal-containing layer.

Abstract: The invention relates to a process for the production of thermoplastic moulding compounds, in particular ABS, wherein at least a first reagent (11) and a second reagent (12) of the thermoplastic moulding compounds are fed to a gear pump (10) which comprises a housing and at least a first gear wheel that is rotatable relative to the housing about a first axis, and a second gear wheel that is rotatable relative to the housing about a second axis, wherein a loop conduit (29) is provided, and wherein the reagents (11, 12) are pressed in a loop through the loop conduit (29) and passing the gear wheels, whereby the reagents (11, 12) are dispersed to form a dispersion (15) in the gear pump (10). The invention also relates to a thermoplastic moulding compound that is produced by the inventive process.

Abstract: The present invention relates to a method for preparing styrene-butadiene rubber in which a molecular weight modifier containing two or more components is used in a polymerization reaction and each of the two or more components is added at a optimal time, and the method is capable of improving physical properties of the prepared styrene-butadiene rubber, and styrene-butadiene rubber prepared thereby. The styrene-butadiene rubber prepared according to the preparation method of the present invention has improvement in characteristics such as tensile strength, elongation, etc., and thus may be usefully used in the production of a tire having environmental friendliness, abrasion resistance, and the like.

Abstract: At least a first fluid and a second fluid are used and are not miscible with each other. At least the first fluid includes one or two items selected from an organic compound, a reactant, and a phase transfer catalyst. From among the fluids other than the first fluid, at least the second fluid includes at least one item from among the items not selected from the three items. The first fluid and second fluid contain all three items. Each of the fluids are merged in a thin-film fluid formed between processing faces that rotate relative to each other. A phase transfer catalyst reaction occurs in the thin-film fluid. Among the first fluid and the second fluid, at least the fluid containing the phase transfer catalyst is prepared so that the phase transfer catalyst is substantially homogeneously mixed before being introduced between the processing faces.

Abstract: The present invention relates to a thermoplastic resin composition and a molded article manufactured thereofrom. In accordance with the present invention, a thermoplastic resin composition providing higher chemical resistance with respect to a blowing agent while providing the same impact strength, gloss, and vacuum moldability as existing resin compositions when used to produce an inner case of a refrigerator, and a molded article manufactured from the same are provided.

Abstract: An ink composition that performs recording by being attached on a heated non-absorbent recording medium or a heated low absorbency recording medium, the ink composition including a pigment; a core polymer and a shell polymer that covers at least a portion of the core polymer, and polymer particles in which the glass transition point of the polymer that configures the core polymer is more than 10° C. lower than the glass transition point of the polymer that configures the shell polymer, and in which the polymer that configures the shell polymer includes a polymer having a (meth)acrylate monomer unit and a carboxylic acid monomer unit, and the content of the polymer particles is 3.0 mass % or more with respect to the total amount of the ink composition.

Abstract: Provided is a method for producing water-absorbent resin particles suitable for use in absorbent article and the like, the water-absorbent resin particles having better water-absorbent performance, a suitable particle size, and a narrow particle-size distribution. A method for producing water-absorbent resin particles by reversed-phase suspension polymerization of a water-soluble ethylenic unsaturated monomer in a carrier fluid, wherein the method for producing water-absorbent resin particles comprises conducting the reversed-phase suspension polymerization reaction in the presence of an organic acid monoglyceride.

Abstract: A process for preparation of a polymer product comprising the steps of i) feeding an aqueous mixture comprising a monoethylenically unsaturated monomer or a mixture of monoethylenically unsaturated monomers into a first reactor device (2) through at least one inlet; ii) partially polymerizing the monomer or monomers and transferring the polymerizing monomer or mixture of monomers from the inlet to an outlet (3) of the first reactor device (2) to provide a partially polymerized product; iii) flowing the partially polymerized product out of the outlet (3), in which no more than 60% of the monomer or mixture of monomers has been polymerized in the partially polymerized product as it exits the outlet (3) of first reactor device (2), and transferring it to a further reactor device (5), in which the further reactor device (5) has an inlet and an outlet (6); iv) continuing the polymerization in the further reactor device (5) and removing the polymer product from the outlet (6) of the further reactor device (5), ch

Abstract: It is intended to obtain a methacrylic resin composition that has high transparency, is excellent in fluidity and heat resistance, and is low variable in impact resistance.

Abstract: A process for preparation of a polymer product comprising the steps of i) feeding an aqueous mixture comprising a monoethylenically unsaturated monomer or a mixture of monoethylenically unsaturated monomers into a first reactor device (2) through at least one inlet; ii) partially polymerising the monomer or monomers and transferring the polymerising monomer or mixture of monomers from the inlet to an outlet (3) of the first reactor device (2) to provide a partially polymerised product; iii) flowing the partially polymerised product out of the outlet (3), in which no more than 60% of the monomer or mixture of monomers has been polymerised in the partially polymerised product as it exits the outlet (3) of first reactor device (2), and transferring it to a further reactor device (5), in which the further reactor device (5) has an inlet and an outlet (6); iv) continuing the polymerisation in the further reactor device (5) and removing the polymer product from the outlet (6) of the further reactor device (5), char

Abstract: Methods, apparatuses, and systems for fabricating porous materials using thixotropic gels. A shear force is applied to a thixotropic material causing the material to flow. Multiple components are added to the thixotropic material while applying the shear force causing the multiple components to be distributed in the material. The shear force is removed such that the static properties of the thixotropic material in the absence of the shear force retain a distribution of the multiple components in the thixotropic material to form a composite gel material that includes liquid within a network of inter-connected solid particles that include the distributed plurality of components. The liquid in the composite gel material is removed to form a porous composite material.

Abstract: A method for simultaneously producing carbon nanotubes and hydrogen according to the present invention is a method for simultaneously producing carbon nanotubes and hydrogen, in which using a carbon source containing carbon atoms and hydrogen atoms and being decomposed in a heated state, and a catalyst for producing carbon nanotubes and H2 from the carbon source, the above carbon nanotubes are synthesized on a support in a heated state, placed in a reactor, and simultaneously, the above H2 is synthesized from the above carbon source, the method comprising a synthesis step of flowing a source gas comprising the above carbon source over the above support, on which the above catalyst is supported, to synthesize the above carbon nanotubes on the above support and simultaneously synthesize the above H2 in a gas flow.

Abstract: Polymer spheres are fabricated. Dispersing polymerization and a two-stage swelling procedure are processed. The polymer spheres fabricated have uniform granular sizes and are highly cross-linking. Thus, the polymer spheres are heat-resistant and solvent-resistant.

Abstract: The present invention relates to rubber polymer latex with a multi-layer core-shell structure, a method of preparing thereof, an acrylonitrile-butadiene-styrene graft copolymer comprising the same, and a thermoplastic resin composition using the same. The rubber polymer latex with a multi-layer core-shell structure has improved weather resistance while maintaining the properties of a diene-based rubber component. The impact resistance, the coloring properties and the weather resistance of the acrylonitrile-butadiene-styrene graft copolymer including the same may be improved. Thus, the impact strength, the coloring properties and the weather resistance of the thermoplastic resin including the acrylonitrile-butadiene-styrene graft copolymer may be improved, and the graft copolymer may be easily applied in industries using thereof.

Abstract: Material composed of a polyazacycloalkane grafted on polypropylene fibres. Process for the preparation of this material. Process for removing metal cations present in a liquid by bringing this liquid into contact with the said material.

Abstract: Disclosed is a method for preparing a rubber latex which includes adding a basic solution to an initial reaction hydrophilic monomer and a small amount of fat-soluble monomer when a polymerization conversion ratio is 90% or more to form particles having a small diameter and superior stability, ionizing an end of the particles to secure stability of the particles and growing the formed particles, and thereby obtains a stable latex with a large particle diameter using a minimal amount of emulsifying agent and minimizes gas generation and heat discoloration derived from the emulsifying agent.

Abstract: Disclosed is a water-absorbent resin particle in which the water-absorption rate of physiological saline is 1 second to 15 seconds, the median particle size is 100 ?m to 600 ?m, and the residual volatile component content is 1.5% by weight or less.

Abstract: Disclosed is a method for preparing a rubber latex which includes adding a basic solution to an initial reaction hydrophilic monomer and a small amount of fat-soluble monomer when a polymerization conversion ratio is 90% or more to form particles having a small diameter and superior stability, ionizing an end of the particles to secure stability of the particles and growing the formed particles, and thereby obtains a stable latex with a large particle diameter using a minimal amount of emulsifying agent and minimizes gas generation and heat discoloration derived from the emulsifying agent.

Abstract: The present invention concerns a heterophasic propylene copolymer of high melt flow for injection molding, which comprise a propylene polymer matrix and a rubber. The heterophasic propylene copolymers of the present invention are characterized by a high viscosity of the rubber phase and a well-defined ratio of the intrinsic viscosities of the rubber phase and the propylene polymer matrix, thus resulting in improved mechanical properties. The present invention further relates to a process for the production of such heterophasic propylene copolymers, their use and articles produced with them.

Abstract: A process for preparing a fluorine-containing polymer which includes a first step for preparing a dispersion of fluorine-containing emulsified particles (A) having ionic functional groups where a fluorine-containing monomer mixture (i) is polymerized by using a water soluble radical polymerization initiator (a) without addition of an emulsifying agent, and a second step for preparing a fluorine-containing polymer (b) having a small amount of ionic functional groups where fluorine-containing monomers (ii) are emulsion-polymerized by using a radical polymerization initiator (b) in the presence of the fluorine-containing emulsified particles (A) having ionic functional groups without addition of an emulsifying agent.

Abstract: A polypropylene resin having: (1) a melt flow rate (MFR) of 6 to 100 g/10 minutes, (2) a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of 3 to 6, and (3) a 116° C. non-eluted component content (100-W116(%)) of 50% or more and a content of components eluted at 90° C. or less (W90) of 10 to 30%, measured by temperature-rising fractional chromatography (TREF).

Abstract: Disclosed is a graft copolymer highly improving the adhesion resistance and impact strength, a method of preparing the same, and PVC composition containing the same, wherein the graft copolymer comprises i) 55 to 85 wt % of a conjugated diene-based rubber core; and ii) 15 to 45 wt % of a graft shell surrounding the rubber core, and formed by comprising a (meth)acrylate-based monomer, and at least one selected from the group consisting of a vinyl-based monomer having a polyalkylene oxide group represented by the following Formula 1; in which the graft copolymer includes 0.1 to 5 wt % of the vinyl-based monomer having the polyalkylene oxide group represented by the following Formula 1: wherein R is independently hydrogen, or C1 to C4 alkyl group, and n is independently 3 to 14.

Abstract: A polymeric particle including a core, a first shell, and a second shell is provided: the core including, when dry, at least one void; the first shell polymer having a calculated glass transition temperature (“Tg”) greater than 50° C. and including, as polymerized units, from 15% to 60%, by weight based on the weight of the first shell, monomer selected from the group consisting of acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, and mixtures thereof; and from 0.3% to 10%, by weight based on the weight of the first shell polymer, multiethylenically unsaturated monomer; and the second shell polymer having a Tg of from ?60° C. to 50° C.; wherein the weight ratio of the second shell polymer to the total of all other structures of the polymeric particle is from 0.5:1 to 3:1. The particle provides binding functionality and, when dry, opacity and energy savings. A method for providing a polymeric particle and a method for providing opacity to a dry coating are also provided.

Abstract: A process for producing polymer microparticles by suspension polymerization of a vinyl-based monomer in which, when polymer microparticles are produced by suspension polymerization of a vinyl-based monomer, a macromonomer having a radically polymerizable unsaturated group at a terminus of a vinyl-based monomer-derived polymer is used as a dispersion stabilizer.

Abstract: Embodiments of the polymerization process of the present invention are directed to polymerizing free radically polymerizable monomers in the presence of a polymerization medium initially comprising at least one transition metal catalyst and an atom transfer radical polymerization initiator. The polymerization medium may additionally comprise a reducing agent. The reducing agent may be added initially or during the polymerization process in a continuous or intermittent manner. The polymerization process may further comprises reacting the reducing agent with at least one of the transition metal catalyst in an oxidized state and a compound comprising a radically transferable atom or group to form a compound that does not participate significantly in control of the polymerization process.

Abstract: Disclosed is a core-shell microparticle (10) which is produced by heating a mixture of a crosslinked microparticle (11) having an alkoxyamine group (12) and a monomer to 100 to 180° C. to cause graft polymerization. The crosslinked microparticle (11) is produced by allowing a seed particle to absorb a monomer mixture comprising 15 to 99% by mass of a crosslinkable monomer and 1 to 85% by weight of a monomer having an alkoxyamine group, and then adding a polymerization initiator to the resulting product to cause the polymerization of the monomer mixture.

Abstract: The present invention relates to a method of producing water-absorbent resin particles in which a median particle size of primary particles (d) and a median particle size of secondary particles (D) satisfy the relationship of the formula, 5d/3+150<D<5d+150, comprising the steps of: (1) subjecting a water-soluble ethylenically unsaturated monomer to a first-step reversed phase suspension polymerization reaction, in a petroleum hydrocarbon solvent, in the presence of a dispersion stabilizer, to give spherical primary particles having a median particle size (d) of from 30 to 130 ?m; (2) cooling the polymerization reaction solution, to precipitate the dispersion stabilizer; and (3) carrying out a second-step reversed phase suspension polymerization reaction by adding the water-soluble ethylenically unsaturated monomer for the second step to the polymerization reaction solution to agglomerate the primary particles, to give secondary particles having a median particle size (D) of from 200 to 500 ?m.

Abstract: A process for the preparation of vinylaromatic (co)polymers grafted on an elastomer comprising a rigid matrix consisting of vinylaromatic polymers or copolymers and of an elastomeric phase dispersed in the matrix in form of particles with a strictly bimodal distribution which comprises the functionalization of a first elastomeric fraction by means of a catalytic system containing a stable free radical initiator and subsequently the polymerization of the thus obtained mixture also in presence of a second non functionalized elastomeric fraction.

Abstract: Disclosed is a method for preparing a thermoplastic resin with superior impact resistance, chemical resistance and processability as well as excellent gloss and whiteness. The method includes emulsion-polymerizing a conjugated diene compound monomer to prepare a rubber latex having an average particle diameter of 1,800 ? to 5,000 ?, a polymerization conversion ratio of at least 90% and a swelling index of 12 to 40, an average gel content of 70 to 95%, emulsion-polymerizing 45 to 75 parts by weight of the rubber latex with 17 to 40 parts by weight of an aromatic vinyl compound and 4 to 20 parts by weight of a vinyl cyanide compound to prepare a graft copolymer latex, and coagulating the graft copolymer latex with a coagulant at 60 to 80° C., and aging the graft copolymer latex at 80 to 99° C. to obtain a graft copolymer powder.

Abstract: The invention is directed to a microemulsion polymerization comprising adding a polymerization catalyst precursor, such as a transition metal complex in the higher of two accessible oxidation states, an ATRP initiator, and an organic solvent to an aqueous solution to form an emulsion. Radically polymerizable monomers and a reducing agent may then be added to the emulsion. The reducing agent converts the catalyst precursor to a catalyst for polymerization of the first monomer from the initiator. In certain embodiments the organic solvent may comprise radically polymerizable monomers. The aqueous solution may comprise a surfactant.

Abstract: A polymer film substrate is irradiated with ions to make a large number of nano-sized through-holes and the substrate may be further irradiated with ionizing radiation so that a functional monomer may be grafted or co-grafted onto a surface of the film and within the holes; in addition, sulfonic acid group(s) may be introduced into the graft chains to produce a polymer ion-exchange membrane that may have high oxidation resistance, dimensional stability, electrical conductivity and/or methanol resistance, as well as may have an ion-exchange capacity controlled over a wide range.

Abstract: An aqueous dispersion of polymeric particles and process for forming thereof is provided. The particles comprise a first polymer comprising, when dry, at least one void; and, substantially encapsulating the first polymer, at least one second polymer comprising, as polymerized units, at least one ethylenically unsaturated monomer.

Abstract: A core-shell fine particle (10) is produced as follows. First of all, a monomer mixture containing 15-99% by mass of a crosslinkable monomer and 1-85% by mass of a monomer having an ATRP initiating group is adsorbed into an organic monodispersed seed particle. Next, the monomer mixture is polymerized by a polymerization initiator, thereby forming a core layer composed of a monodispersed crosslinked fine particle (11) containing an ATRP initiating group (12). A shell layer (13) is then formed by graft polymerizing a monomer onto the thus-obtained core layer.

Abstract: The present invention relates to copolymers with polar and non-polar olefin blocks with a variable polar monomer content of 0.1 mol % to 99.9 mol %. The invention also relates to a method for obtaining copolymers with olefin blocks and vinyl polar monomer blocks, said method using a single-component catalytic system made up of an organometallic complex containing a metal belonging to groups VIII to X. Said organometallic complex is advantageously active in the medium without adding cocatalyst.

Abstract: Disclosed is a vinyl polymer powder which is superior to dispersibility to curable resin compositions, which immediately gives a gel state for curable resin compositions by short-time heating with predetermined temperature, which is with high ion concentration, and which is useful as a pre-gel agent suitable for fields of electronic materials, to provide a curable resin composition comprising the vinyl polymer powder, and to provide a cured substance of the curable resin composition. The vinyl polymer powder of the present invention has an acetone-soluble component of 30% by mass or more, mass average molecular weight of the acetone-soluble component of 100,000 or more, a content of an alkali metal ion of 10 ppm or less, and a volume average primary particle size (Dv) of 200 nm or more.

Abstract: A process for the preparation of vinylaromatic (co)polymers grafted on an elastomer in a controlled way, comprising the dissolving of an elastomer, such as polibutadiene, in a mixture consisting of a monomer and of a solvent in the presence of a polymerization catalytic system, which comprises an initiator of free radicals and a stable initiator of free radicals. The mixture obtained in this way is heated to a temperature of about 100° C. to functionalize the rubber, then more monomer is added and the temperature is raised to start the polymerization reaction.

Abstract: The present invention discloses a production method of core-shell type highly liquid absorbent resin particles comprising: (1) a first step in which a particle core portion is formed by suspension polymerizing an aqueous solution (e) containing (meth)acrylic acid, a crosslinking agent (c) and an anionic surfactant (d) in a hydrophobic organic solvent (a) containing a nonionic surfactant (b), and (2) a second step in which a shell portion that covers the particle core portion is formed by suspension polymerizing an aqueous solution (g) containing a water-soluble vinyl polymer (f), having carboxyl groups and polymerizable unsaturated double bonds and having a number average molecular weight of 500 to 10000, in a suspension obtained in the first step.

Abstract: Provided are a rubber latex having a multi-layer structure, wherein an inner-layer rubber latex has a refractive index greater than that of an outer-layer rubber latex, a graft copolymer prepared from the rubber latex, a polyvinyl chloride (PVC) resin blend containing the graft copolymer, and a method of preparing the rubber latex. The PVC resin blend containing the graft copolymer including the rubber latex according to the present invention has improved color property and low-temperature impact strength than conventional PVC resins.

Abstract: The present invention relates to rubbery core/shell polymers that have improved heat and ultraviolet light resistance. These polymers can be blended with thermoplastics to make leathery compositions. The core/shell polymers of this invention have an inner core and an outer shell. The inner core is has repeat units which are derived from (a) butyl acrylate, (b) a member selected from the group consisting of methyl methacrylate, ethyl methacrylate, methyl acrylate, and ethyl acrylate, (c) optionally, an alkoxy ethyl acrylate or an alkoxy ethyl methacrylate, (d) acrylonitrile, (f) a cross-linking agent, and (g) a monomer containing reactive cure sites The outer core has repeat units which are derived from (d) acrylonitrile, (e) styrene, and (f) additional cross-linking agent. The outer core of these polymers is void of repeat units that are derived from methyl methacrylate.

Abstract: The present invention provides a process for preparing emulsion polymer particles of a hollow core/shell structure in the presence of a monomer plasticizer having a ceiling temperature less than 181° C. wherein a polymerization inhibitor or reducing agent is not added to the aqueous emulsion of the core shell particles during the neutralization and swelling stage. The obtained core shell particles are useful in paints, paper coatings, foams, and cosmetics.

Abstract: Embodiments of the polymerization process of the present invention are directed to polymerizing free radically polymerizable monomers in the presence of a polymerization medium initially comprising at least one transition metal catalyst and an atom transfer radical polymerization initiator. The polymerization medium may additionally comprise a reducing agent. The reducing agent may be added initially or during the polymerization process in a continuous or intermittent manner. The polymerization process may further comprise reacting the reducing agent with at least one of the transition metal catalyst in an oxidized state and a compound comprising a radically transferable atom or group to form a compound that does not participate significantly in control of the polymerization process.

Abstract: Compositions, processes, and methods are provided relating to styrenic polymers, including high impact polystyrene (HIPS), also referred to as rubber-modified polystyrene. In one aspect, a process is provided for making high impact polystyrenes, comprising the steps of combining a monovinylarene component, a monovinylarene-conjugated diene block copolymer, and a conjugated diene polymer. In another aspect, the feed components form an emulsion having a continuous phase and a dispersed phase. The continuous phase comprises at least a portion of the monovinylarene component and at least a portion of the conjugated diene polymer. The dispersed phase is suspended within the continuous phase, and comprises globules having at least a portion of the monovinylarene-conjugated diene block copolymer, a remaining portion of the monovinylarene component, and a remaining portion of the conjugated diene polymer.

Abstract: A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Abstract: Modified scrap rubber particles, a method for forming the modified rubber particles and compositions including the modified rubber particles. The rubber particles are impregnated with at least one polymerizable monomer and polymerized to impregnate the rubber particles with a polymer. The impregnated polymer provides the modified rubber particles with improved properties which increase the potential uses for recycled scrap rubber. The modified rubber particles are useful in surface coatings, such as latex paint or powder coatings and can be used as a soil substitute.