Abstract: The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 80 mol %. The present invention further relates to novel isobutene polymers.

Abstract: The invention provides novel latexes of particles of vinylidene fluoride/trifluoroethylene copolymers possessing a more ordered ferroelectric crystalline phase, and hence improved ferro-, pyro-, and piezo-electric properties, and a method for manufacturing the same by emulsion polymerization in the presence of certain cyclic fluorosurfactants.

Abstract: Coating compositions or paint having a pigment blended with a polymer system including one or more latex polymers, wherein the polymer system contains an alkali-soluble resin having an acid value and molecular weight and provided in a preferably desired amount to demonstrate optimal performance characteristics of washability, stain resistance or scrubability without negatively impacting block resistance, especially when neutralized with a low-volatility base.

Abstract: The present invention pertains to a ferroelectric fluoropolymer, to a process for manufacturing said fluoropolymer and to uses of said fluoropolymer in electric and/or electronic applications.

Abstract: Described herein is a process for making PTFE having a standard specific gravity of less than 2.160 g/cm3 comprising: polymerizing a tetrafluoroethylene monomer in an aqueous medium comprising an emulsifier and an initiator in a reaction vessel and contacting the aqueous medium with a fluorinated polyether. Also described herein are the polymerizable compositions and articles thereof.

Abstract: There is provided a gel composition that can be suitably used as a thickener for cosmetic preparations and the like. A gel composition comprising a neutralized product of an alkyl-modified carboxyl group-containing polymer, which is a copolymer of monomers comprising 100 parts by mass of (meth)acrylic acid (a), 2.5 to 5 parts by mass of a (meth)acrylic acid alkyl ester (b) in which the alkyl group has 18 to 24 carbon atoms, and 0.1 part by mass or less of a compound (c) having two or more ethylenically unsaturated groups; and at least one of an anionic emulsifier and a nonionic emulsifier.

Abstract: This disclosure describes polymerization processes and processes for quenching polymerization reactions using high molecular weight polyhydric quenching agents.

Abstract: The present invention relates to a process for producing cycloalkenamer-containing compositions and to such cycloalkenamer-containing compositions. The invention further relates to the use of these cycloalkenamer-containing compositions in the field of packaging materials, especially for food and drink.

Abstract: A process for preparing a vinyl acetate rich polymer for formulating surfactant containing compositions comprising at least one anionic surfactant and having yield stress properties without a significant increase in viscosity, low turbidity, and the ability to suspend insoluble materials in the form of particulates and/or droplets that require suspension or stabilization is disclosed.

Abstract: The present disclosure concerns a bulk polymerization process for the preparation of high heat performance copolymer resins with a reduced amount of oligomer byproduct. The method can comprise isolating oligomer byproduct and introducing the oligomer byproduct into the reactant mixture for the bulk polymerization process.

Abstract: The presently disclosed and claimed inventive concept(s) relates to solid catalyst components comprising titanium, magnesium, halogen and an internal electron donor compound having at least one ester group and at least one alkoxy group, and catalyst systems containing the catalyst solid components, organoaluminum compounds, and organosilicon compounds. The presently disclosed and claimed inventive concept(s) further relates to methods of making the catalyst components and the catalyst systems, and methods of polymerizing or copolymerizing alpha-olefins using the catalyst systems.

Abstract: Methods and materials for patterning a substrate are disclosed herein. A poly(thioaminal) material may be utilized as a thermal resist material for patterning substrates in a thermal scanning probe lithography process. The poly(thioaminal) material may be functionalized with an electron withdrawing group and various monomers may be volatilized upon exposure to a thermal scanning probe.

Abstract: Disclosed are an apparatus and method for preparing polybutene having various molecular weights by using complex catalysts of different molar ratios. The apparatus for preparing polybutene having various molecular weights, comprises: a complex catalyst preparing device for preparing a high-activity complex catalyst and a low-activity complex catalyst to form highly reactive polybutene through polymerization; a high-molar ratio complex catalyst system for controlling the storage and supply of the high-activity complex catalyst; a low-molar ratio complex catalyst system for controlling the storage and supply of the low-activity complex catalyst; and a reactor to which reaction raw materials including the high-activity complex catalyst, the low-activity complex catalyst, and isobutene are supplied to be polymerized into highly reactive polybutene.

Abstract: The present invention relates to hexafluoropropylene oxide polymer composition and a process of preparing ofhexafluoropropylene oxide polymer by an anionic polymerization, and in particular the hexafluoropropylene oxide polymer composition comprises an anionic initiator, a polar solvent, hexafluoropropylene and hexafluoropropylene oxide. The hexafluoropropylene oxide polymer is prepared under particular reaction conditions by using the composition, hexafluoropropylene oxide poylymer prepared by using the composition according to a preparation process herein has a weight average molecular weight (Mw) of 1,500-4,000 at ?10 to 20° C.

Abstract: The present invention provides a pneumatic tire that achieves a balanced improvement in initial grip performance, grip performance during running, and abrasion resistance. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition containing a rubber component, a solventless acrylic resin, and a liquid xylene resin, and having a solventless acrylic resin content of 1 to 50 parts by mass and a liquid xylene resin content of 5 to 100 parts by mass, each per 100 parts by mass of the rubber component.

Abstract: Provided are surfactant compositions that are useful as alternatives to alkylphenol ethoxylates (APEs) type surfactants in emulsion polymerization. The surfactant compositions comprise: an alkyl alkoxylate sulfate of formula (I): R—O—(C3H6O)x(C2H4O)y—S03M, wherein R, x, y, and M are as defined herein.

Abstract: A microemulsion consisting of water, peroxidic fluoropolyether carboxylate and oil is provided. When the microemulsion is used in homopolymerization, binary copolymerization or multi-component copolymerization of fluorine-containing olefin monomers, an emulsion with a low viscosity and a particle diameter of 30-200 nm can be obtained.

Abstract: The present invention relates to a process for the production of propylene polymers in the presence of a Ziegler-Natta catalyst comprising a titanium compound having at least one titanium-halogen bond, and a blend of a diether compound and a succinate compound as internal electron donor, all supported on a magnesium halide in active form, an organoaluminium compound and an optional external donor.

Abstract: The present invention relates to the use of Styrenated Phenol Ethoxylates as surfactants in emulsion polymerization. The present invention further relates to the use of both anionic and nonionic Styrenated Phenol Ethoxylates in emulsion polymerization. Latexes with small average particle and narrow particle size distributions are obtained. Prepared latexes also have low coagulum levels and exhibit excellent mechanical and chemical stability.

Abstract: Acoustically responsive particles and methods are provided for their use. Methods are provided for making and using tunable, monodisperse acoustically responsive particles and negative contrast acoustic particles, wherein the particles can contain a functional group available for covalent modification.

Abstract: The present invention provides a process for producing an ?-olefin polymer comprising polymerizing or copolymerizing (a) C3 or higher ?-olefin(s) in the presence of an olefin polymerization catalyst comprising solid titanium catalyst component (I) containing titanium, magnesium, halogen, and a compound with a specific structure having two or more ether linkages and organometallic catalyst component (II) with high catalytic activity. In this process, particularly even in (co)polymerizing (a) higher olefin(s), demineralization is unnecessary. A 4-methyl-1-pentene-based polymer obtained by polymerization using the catalyst of the present invention is excellent in tacticity, transparency, heat resistance, and releasability, and the polymer is particularly suitable for a release film.

Abstract: The invention provides a compound which is useful in production of a fluoropolymer and easy to be removed from the produced fluoropolymer, a method of producing the compound, and a method of producing a fluoropolymer using the compound. The invention provides a compound which is represented by Rf1—CH2O—CF2—CHF—Rf2—X, wherein Rf1 represents a fluoroalkyl group containing 1 to 5 carbon atoms, Rf2 represents a fluoroalkylene group containing 1 to 3 carbon atoms, X represents —COOM or —SO3M, and M represents one of H, K, Na, and NH4.

Abstract: A method for producing a water-absorbent resin including the step of subjecting a water-soluble ethylenically unsaturated monomer to a reversed phase suspension polymerization in a petroleum hydrocarbon dispersion medium in the presence of a radical polymerization initiator and a dispersion stabilizer, wherein the method is characterized by the use of an ether-ester type nonionic surfactant as the dispersion stabilizer, and a water-absorbent resin obtained by the method, wherein the water-absorbent resin has a water-retention capacity of saline solution of 25 g/g or more, a water-absorption rate of saline solution of 50 seconds or less, and a flow index under moisture absorption of 70% or more. According to the method of the present invention, a water-absorbent resin having high water-retention capacity, excellent water-absorption rate, and further having excellent flowability under moisture absorption can be produced.

Abstract: The invention concerns a process for the aqueous suspension, micro-suspension, emulsion or micro-emulsion polymerization of at least one halogenated monomer, in particular chlorinated, for example vinyl chloride, by itself or with one or more other vinyl monomers, preferably less than 50% by weight of one or more other vinyl monomers, in which at least one shortstopper and at least one perhalogenate, acting as a whitening agent, are added. The invention also concerns the use of an association of at least one shortstopper and at least one perhalogenate, acting as a whitening agent, in reactions for the polymerization of halogenated monomers. The invention further concerns compositions comprising at least one shortstopper and at least one perhalogenate.

Abstract: Catalyst deactivating agents and compositions containing catalyst deactivating agents are disclosed. These catalyst deactivating agents can be used in methods of controlling polymerization reactions, methods of terminating polymerization reactions, methods of operating polymerization reactors, and methods of transitioning between catalyst systems.

Abstract: A polymer having at least the following characteristics: (a) a block styrene content with more than 6 consecutive styrene units from about 15 to about 35 weight percent based on total styrene content in the polymer; (b) a vinyl content from about 25 to about 80 weight percent based on total amount of polymerized 1,3-diene; and (c) a styrene content from about 35 to about 75 weight percent based on total weight of polymer; and (d) a molecular weight distribution (Mw/Mn) of 1.5 or less.

Abstract: A rubber composition with disperse phase particles containing poly(phenylene ether) can be formed by a method that includes melt blending an uncured rubber with a poly(phenylene ether) composition containing a poly(phenylene ether) and an oil to form an uncured rubber composition, then curing the uncured rubber composition. Before being blended with the rubber, the poly(phenylene ether) composition exhibits a glass transition temperature of about 40 to about 140° C., and during blending with the rubber, the oil component of poly(phenylene ether) composition migrates from the poly(phenylene ether) composition to the rubber, leaving a poly(phenylene ether)-containing disperse phase that gives rise to a second hysteresis peak temperature of about 160 to about 220° C. as measured by dynamic mechanical analysis of the cured rubber composition.

Abstract: Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor compound of the following formula (I) In which R to R4 groups, equal to or different from each other, are hydrogen, halogen or C1-C15 hydrocarbon groups, optionally containing an heteroatom selected from halogen, P, S, N and Si, which may be linked to form a saturated or unsaturated mono or polycycle and R5 groups are selected from C1-C15 hydrocarbon groups optionally containing an heteroatom selected from halogen, P, S, N and Si.

Abstract: A method of inhibiting hydrates in a fluid comprising water and gas comprising adding to the fluid an effective hydrate-inhibiting amount of a composition comprising one or more copolymers of N-alkyl(alkyl)acrylamide monomers and one or more cationic monomers selected from acid and alkyl chloride quaternary salts of N,N-dialkylaminoalkyl(meth)acrylates and N,N-dialkylaminoalkyl(meth)acrylamides.

Abstract: The present invention relates to hexafluoropropylene oxide polymer composition and a process of preparing of hexafluoropropylene oxide polymer by an anionic polymerization, and in particular the hexafluoropropylene oxide polymer composition comprises an anionic initiator, a polar solvent, hexafluoropropylene and hexafluoropropylene oxide. The hexafluoropropylene oxide polymer is prepared under particular reaction conditions by using the composition, hexafluoropropylene oxide polymer prepared by using the composition according to a preparation process herein has a weight average molecular weight (Mw) of 1,500-4,000 at ?10-20° C.

Abstract: A perfluoropolyether thiol compound comprises a perfluoropolyether segment, at least one mercapto group (—SH), and at least one intervening divalent carbonylimino moiety (—C(?O)—NR—, wherein R is hydrogen or alkyl). The compound can be produced, for example, by a ring-opening reaction of thiolactones with perfluoropolyether-substituted, primary or secondary amines. The compound can be used, for example, as a polymerization chain transfer agent, as an intermediate for the preparation of functional group-containing fluorochemical derivatives such as disulfides, and as a fluorinated surface treatment.

Abstract: A polymerization process is disclosed, including: polymerizing an olefin to form an olefin-based polymer in a polymerization reactor; and introducing a hindered amine light stabilizer to the polymerization reactor. The process may further comprise monitoring static in the polymerization reactor; maintaining the static at a desired level by use of a hindered amine light stabilizer, the hindered amine light stabilizer present in the reactor in the range from about 0.1 to about 500 ppmw, based on the weight of polymer produced by the process.

Abstract: Amorphous hydrofluoroolefin telomers are prepared by a free-radical polymerization process conducted at high temperature and pressure in the presence of non-monomeric chain transfer agent.

Abstract: A method for the preparation of a fluoropolymer by means of emulsion polymerization of a reaction mixture in an aqueous medium is disclosed wherein the reaction mixture includes a fluoromonomer having the structure of wherein R1, R2, and R3 are each independently hydrogen atoms, alkyl groups, substituted alkyl groups, or halogens, wherein at least one of R1, R2, and R3 is a fluorine atom, and wherein R is each independently a substituent on the styrenic ring, n is an integer from 0 to 5 representing the number of the substituents on the styrenic ring; b) an emulsion stabilizer combination comprising: i) an anionic surfactant; and, ii) a cationic surfactant or a non-ionic surfactant; and, c) a free-radical initiator.

Abstract: Monomers, polymers and copolymers are provided that incorporate at least one naturally occurring phenolic compound, such as a plant phenol.

Abstract: Disclosed herein is a process for producing a conductive polymer, the process comprising: providing a substrate having an oxidant layer on a surface thereof, the oxidant layer containing an oxidant, a solvent or blend of solvents, and a relatively high molecular weight non-ionic surfactant; exposing the surface containing the oxidant layer to a vapour containing an aryl or heteroaryl monomer that is polymerisable to form a conductive polymer without exposing the oxidant layer to an external source of water vapour; and polymerising the aryl or heteroaryl monomer to form a polyaryl or polyheteroaryl conductive polymer on the surface of the substrate.

Abstract: Provided are a latex for dip molding, a composition for dip molding, a preparation method of a dip molded product, and a dip molded product prepared thereby. The latex for dip molding includes a conjugated diene monomer, an ethylenically unsaturated nitrile monomer, and an ethylenically unsaturated acid monomer, wherein the latex further includes sodium methallyl sulfonate as a copolymerizable ionic monomer. A dip molded product having excellent tensile strength, elongation, and touch may be obtained from a composition using the latex according to the present invention, and the generation of limitations, such as non-uniformity of physical properties and difficulties in product management, may be prevented.

Abstract: The invention relates to a polymer suited for modifying the styling performance and the rheology of a cosmetic preparation, a composition thereof, a method of making it as well as the use of said polymer and the composition respectively. The copolymer comprises at least one non-ionic ethylenically unsaturated C1-C4 (meth)acrylate as monomer A; an ethylenically unsaturated monomer B having as hydrogen bond donor an amide group, said ethylenically unsaturated monomer B being an ethylenically unsaturated monomer having a cyclic amide moiety, as monomer B1 and/or, an ethylenically unsaturated monomer having an acyclic amide group, as monomer B2; at least one ethylenically unsaturated carboxylic acid as monomer C; a macromonomer D; optionally at least one cross-linker E; and optionally at least one further monomer F.

Abstract: An extended anionic surfactant having the general formula: RO—(PO)n—YZ wherein R is a linear alkyl chain ranging from C6 to C36, a branched alkyl chain ranging from C6 to C36, or a mixture thereof; PO is a propyleneoxy group; Y is —SO3, —CH2CH2CH2—SO3, —CH2CH(CH3)—SO3, or —CH2COO; Z is a cation; and n is 1 to 50.

Abstract: The invention relates to the use of aqueous solutions of nonionic surfactants as gel phase free emulsion systems for emulsion polymerization. The nonionic surfactants are chosen from the group (a) of the addition products from 1 to 40 mol ethylene and/or propylene oxide per mol of allyl alcohol, and (b) of the addition products from 1 to 40 mol ethylene and/or propylene oxide per mol of allyl alcohol, wherein the OH-group of said addition products is end-capped in the sense that it is substituted by a group OR, wherein R is an alkyl group with 1 to 20 C-atoms, which can be saturated or unsaturated, straight chained or branched.

Abstract: A method for producing a water-absorbent resin including the step of subjecting a water-soluble ethylenically unsaturated monomer to a reversed phase suspension polymerization in a petroleum hydrocarbon dispersion medium in the presence of a radical polymerization initiator and a dispersion stabilizer, wherein the method is characterized by the use of an ether-ester type nonionic surfactant as the dispersion stabilizer, and a water-absorbent resin obtained by the method, wherein the water-absorbent resin has a water-retention capacity of saline solution of 25 g/g or more, a water-absorption rate of saline solution of 50 seconds or less, and a flow index under moisture absorption of 70% or more. According to the method of the present invention, a water-absorbent resin having high water-retention capacity, excellent water-absorption rate, and further having excellent flowability under moisture absorption can be produced.

Abstract: The invention relates to a polymer composition that includes a branched alkene which is cationically polymerizable as well as a glass-forming comonomer and/or a vinyl comonomer containing benzocyclobutene as the pendant group. The structure of the polymer composition can take various forms: linear random copolymer, linear block copolymer, star random copolymer, star block copolymer, and other hyperbranched polymers. The copolymer composition can undergoes crosslinking at elevated temperatures (preferably above 180° C.).

Abstract: A polymerization method of a high-molecular weight compound (A1) having a constituent unit (a0) derived from a compound represented by the following general formula (a0-1), which has excellent lithography properties, and is useful as a resist composition, the method including conducting polymerization using a mixed solvent containing 10 mass % or more of one or more of a cyclic ketone-based solvent, an ester-based solvent, and a lactone-based solvent. A resist composition containing the high-molecular weight compound (A1) and a method for forming a resist pattern using the same.

Abstract: Improved Ziegler-Natta catalysts and methods of making the improved catalyst are described. The Ziegler-Natta catalyst is formed using a spherical MgCl2-xROH support, where R is a linear, cyclic or branched hydrocarbon unit with 1-10 carbon atoms and where ROH is an alcohol or a mixture of at least two different alcohols and where x has a range of about 1.5 to 6.0, preferably about 2.5 to 4, more preferably about 2.9 to 3.4, and even more preferably 2.95 to 3.35. The Ziegler-Natta catalyst includes a Group 4-8 transition metal and an internal donor comprising a diether compound. The catalyst has improved activity in olefin polymerization reactions as well as good stereoregularity and hydrogen sensitivity, and may be useful in the production of phthalate-free propylene polymers having a molecular weight distribution (PI(GPC)) in the range from about 5.75 to about 9.

Abstract: The present invention relates to a branched vinyl polymer carrying dendrons made from monofunctional vinyl monomers and branched by virtue of difunctional vinyl monomers so that there is on average one branch or fewer per polymer chain to avoid gelation. The polymer may be made by chain-growth polymerization of predominantly monofunctional vinyl monomers in the presence of difunctional vinyl monomers and dendron units.

Abstract: A polymer having at least the following characteristics: (a) a block styrene content with more than 6 consecutive styrene units from about 15 to about 35 weight percent based on total styrene content in the polymer; (b) a vinyl content from about 25 to about 80 weight percent based on total amount of polymerized 1,3-diene; and (c) a styrene content from about 35 to about 75 weight percent based on total weight of polymer; and (d) a molecular weight distribution (Mw/Mn) of 1.5 or less.

Abstract: A multibranched polymer represented by the following formula (I), and a method for producing the multibranched polymer: where A represents an organic group having 3 or more branched chains, Xa represents a linking group containing any atom of Groups 14 to 16 in the Periodic Table, Y represents a functional group having a structure capable of having an active halogen atom, Q represents an arm moiety having a repeating unit derived from a polymerizable unsaturated bond, m1 represents any integer of 1 to the number of branched chains of A, m2 represents the number of branched chains of A, n1 represents an integer of 0 or 1 or more, and Ra represents an organic group that is not associated with the polymerization reaction.

Abstract: The time when at least a monomer and a chain transfer agent are supplied in a reactor and the solution temperature in the reactor has reached a predetermined polymerization temperature is set as starting time (T0), and the time when a process to terminate the polymerization is started is set as ending time (T1). A polymerization initiator is supplied into the reactor between (T0) and just before [(T1)?(T0)/2] and between [(T1)?(T0)/2] and (T1). The total mass of the polymerization initiator supplied to the reactor between (T0) and (T1) is set as (IA), and the total mass of the polymerization initiator supplied between [(T0?T1)/2] and (T1) is set as (IB). The (IA) is set 50 to 100 mass % of the entire polymerization initiator. Using a production method in which 0.50<(IB)/(IA)<1.00 is satisfied, a polymer is produced at a high polymerization rate showing less variation of molecular weight and having less amount of chain transfer agent residue remaining at an end of the polymer chain.

Abstract: Preparation of high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 50 mol % by polymerization of isobutene or isobutene-comprising monomer mixtures in the presence of Lewis acids suitable as polymerization catalysts or of complexes which are effective as polymerization catalysts and are formed from Lewis acids and donors, and in the presence of initiators, wherein the initiators used are organic sulfonic acids Z—SO3H in which the variable Z denotes an alkyl radical, haloalkyl radical, cycloalkyl radical, aryl radical or arylalkyl radical.

Abstract: The present invention relates to a process for the production of propylene polymers in the presence of a Ziegler-Natta catalyst comprising a titanium compound having at least one titanium-halogen bond, and a blend of a diether compound and a succinate compound as internal electron donor, all supported on a magnesium halide in active form, an organoaluminium compound and an optional external donor.