Abstract: A method for manufacturing a rubber composition includes kneading a rubber component, an inorganic filler and a thioester-based silane coupling agent, and adding a vulcanizing agent and one or more compounds selected from the group of an imide compound and an N-oxyl compound to a mixture of the rubber component, the inorganic filler, and the thioester-based silane coupling agent such that the vulcanizing agent and the imide compound and/or the N-oxyl compound are kneaded with the mixture including the rubber component, the inorganic filler, and the thioester-based silane coupling agent.

Abstract: A carbanionic polymer chain that contains polyene mer can be provided with a terminal functionality separated from the polymer chain by a sulfide linkage. The terminally functionalized polymer can be provided by reacting a carbanionic polyene-based polymer with an episulfide compound to provide a polymer with a terminal thiolate moiety, followed by reaction with an epoxide compound that also includes at least one other heteroatom-containing functional group.

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 is directed to a self-healing rubber composition comprising a functionalized elastomer comprising: a polymeric backbone chain derived from a monomer comprising at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer; and a functional group bonded to the backbone chain, the functional group comprising a multidentate ligand capable of complexing with a metal ion; and a partitioned metal ion. The invention is further directed to a pneumatic tire comprising the self-healing rubber composition.

Abstract: A class of molecularly imprinted polymers that specifically recognizes and binds to TSNAs are useful, for example, in analysis and separation of TSNAs from biological fluids. Such polymers are also useful in methods of treating and manufacturing tobacco products and materials.

Abstract: A nitrile rubber coupled via bisdihydropyrazole groups is produced by reacting a nitrile rubber which is based on conjugated dienes, ?,?-unsaturated nitriles and optionally further copolymerizable monomers as monomers, may have been hydrogenated and has covalently bonded tetrazole groups with a bifunctional ene compound in which the ene groups can each be reacted with the tetrazole groups to give dihydropyrazole groups.

Abstract: Provided herein are methods for preparing vinylidene-terminated polyolefins. Further provided herein are sulfide-terminated polyolefins.

Abstract: In a lithium ion battery, one or more chelating agents may be attached to a microporous polymer separator for placement between a negative electrode and a positive electrode or to a polymer binder material used to construct the negative electrode, the positive electrode, or both. The chelating agents may comprise, for example, at least one of a crown ether, a crown ether, a podand, a lariat ether, a calixarene, a calixcrown, or mixtures thereof. The chelating agents can help improve the useful life of the lithium ion battery by complexing with unwanted metal cations that may become present in the battery's electrolyte solution while, at the same time, not significantly interfering with the movement of lithium ions between the negative and positive electrodes.

Abstract: The invention provides a rubber composition comprising a styrene-butadiene copolymer and having improved compatibility with a thiol-based crosslinking agent and also having increased curability. As means for solving the problems, the inventive thiol-containing liquid rubber composition comprises (A) a styrene-butadiene copolymer which is liquid at 25° C. and (B) a polythiol derived from mercaptocarboxylic acid, wherein the styrene-butadiene copolymer (A) desirably has a bound styrene content of 20 to 90% by mass.

Abstract: The present invention is directed to a functionalized elastomer comprising: a polymeric backbone chain derived from a monomer comprising at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer; and a functional group bonded to the backbone chain, the functional group comprising a multidentate ligand capable of complexing with a metal ion.

Abstract: A 1,2,4-triazine of formula (I): and its process of manufacture and use.

Abstract: A composition including a graft copolymer, having: a linear trunk including at least one non-aromatic vinyl polymer or an unsaturated polyolefin; and at least two grafts attached to said trunk via a chemical bond, each graft having a conjugated polymer, characterized in that said composition further includes: fullerenes and a conjugated polymer; or carbon and/or graphene nanotubes. Also, a photovoltaic module incorporating such a composition, and to the use of said composition for the same purposes. Finally, methods for synthesizing the molecules forming all or part of the composition.

Abstract: A process of degrading nitrile rubbers comprises subjecting them to a metathesis reaction in the presence of specific catalysts with increased activity.

Abstract: The present invention relates to a polymer composition, comprising (i) a polypropylene homopolymer, (ii) a polypropylene random copolymer, prepared by copolymerization of propylene with an olefin comonomer and having an amount of olefin comonomer units of 0.2 to 5 wt %, and (iii) an elastomeric copolymer of propylene and at least one olefin comonomer, the polymer composition having a tensile modulus, determined according to ISO 527-2/1 B at 1 mm/min. and 230 C, of at least 1200 MPa.

Abstract: Provided herein are methods for preparing vinylidene-terminated polyolefins. Further provided herein are sulfide-terminated polyolefins.

Abstract: The present invention is directed to a rubber composition comprising: a functionalized elastomer comprising a polymeric backbone chain derived from a monomer comprising at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer; and a functional group bonded to the backbone chain, the functional group comprising a multidentate ligand capable of complexing with a metal ion; and an encapsulated metal salt. The invention is further directed to a pneumatic runflat tire comprising a sidewall insert, the insert comprising the rubber composition.

Abstract: Provided herein are methods for preparing vinylidene-terminated polyolefins. Further provided herein are sulfide-terminated polyolefins.

Abstract: The invention relates to a composition that can be thermally cured, containing relative to the total composition, a) 5 to 90% by weight of a diene-based polymer or copolymer containing an olefinic double bond and/or an aromatically substituted olefin, wherein the polymer or copolymer is liquid, or paste-like, at 22° C. and has a glass transition temperature between ?30° C. and +15° C., measured according to a DSC method; b) a vulcanization system selected from the group consisting of: b1) sulfur, and one or more accelerator(s), b2) peroxidic or disulfidic vulcanization systems, b3) quinones, quinone dioximes, or dinitrosobenzene.

Abstract: Provided herein are methods for preparing vinylidene-terminated polyolefins. Further, provided herein are novel sulfide-terminated polyolefins of the formula: wherein R1 is a polyolefin group and R2 is hydrocarbyl; and methods for producing the same.

Abstract: A functionalized polymer defined by the formula ?-R1-?, where ? is a polymer chain, R1 is a bond or a divalent organic group, and ? is a sulfur-containing heterocycle.

Abstract: Polymer-filler coupling compounds with the formula B-A-Sx—N are claimed. In these compounds, B is an azaheterocyclic oxygen or sulfur containing moiety, or an allyltin moiety; Sx is a polysulfide, where x is between 2 and about 10; A is a linking atom or group that forms a bridge between B and Sx; and N is a blocking group. Sx can be a disulfide. N can be a conventional blocking group or other group such as -A-B. Methods for using the polymer-filler coupling compounds to modify polymers containing unsaturated carbon-carbon bonds and promote filler dispersion are also claimed. Additionally, vulcanizable rubber compositions containing the polymer-filler coupling compounds and methods for making vulcanized rubber compositions using the polymer-filler coupling compounds are also claimed.

Abstract: A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing conjugated diene monomer by employing a lanthanide-based catalyst to form a reactive polymer, and (ii) reacting the reactive polymer with a protected oxime compound.

Abstract: Provided herein are methods for preparing vinylidene-terminated polyolefins. Further, provided herein are novel sulfide-terminated polyolefins of the formula: wherein R1 is a polyolefin group and R2 is hydrocarbyl; and methods for producing the same.

Abstract: Water soluble polymers having formula I: Y-(L1)ni-(C(O))n2—(R1)n3—R2 are claimed. The polymers may contain multiple water soluble, immunogenicity reducing moieties and multiple active moieties. The polymers may be linked to a protein, or a peptide having up to twelve amino acids.

Abstract: The invention relates to novel polymers or oligomers containing at least sulfinate groups (P—(SO2)nX, X=1-(n=1), 2-(n=2) or 3-(n=3) valent metal cation or H+ or ammonium ion NR4+ where R=alkyl, aryl, H), which are obtained by completely or partially reducing polymers or oligomers containing at least SO2Y-groups (Y?F, Cl, Br, I, OR, NR2 (R=alkyl and/or aryl and/or H), N-imidazolyl, N-pyrazolyl) by means of suitable reducing agents in a suspension or in a solution form. Polymer and polymer(blend)membranes which are obtained by further reacting the received sulfinated polymers, especially by alkylation of the sulfinate groups with mono- di- or oligo functional electrophiles. The invention further relates to methods for producing the sulfinated polymers and for further reacting the sulfinated polymers with electrophiles by S-alkylation.

Abstract: Embodiments of the disclosed polymer composition comprise a first unsaturated polymer or polymer precursor, and an effective amount of a peptizer. The peptizer typically comprises a heteroaryl or a heterocyclic compound, other than morpholine as disclosed in assignee's prior applications. Disclosed polymer compositions are useful for making sports equipment, such as at least one layer of a golf ball, often a core. Because the compositions are useful for making golf balls, materials commonly known for making such golf balls can be used in combination with the polymer composition. A method for forming a golf ball also is disclosed. The method comprises providing disclosed compositions and then forming at least one component of a golf using the composition.

Abstract: Disclosed is a method for preparing polyolefins containing vinylidine end groups from quasiliving carbocationically terminated polyolefin polymers by contacting the quasiliving carbocationically terminated polymer with a suitable nonaromatic heterocyclic ring quenching agent and substituted derivatives thereof.

Abstract: A polymer comprising a conducting or semiconducting segment coupled to a polymer segment having an insulating polymer backbone, the polymer further comprising a RAFT functional group coupled to the polymer segment, wherein there is no RAFT functional group in between the conducting or semiconducting segment and the polymer segment.

Abstract: Disclosed is a diurethane compound R2(SO2)m(CH2)nOCONH—R1—NHCOO(CH2)n(SO2)mR2 produced by a method allowing a diamine compound H2NR1NH2 to react with a chloroformate compound ClCOO(CH2)n(SO2)mR2 or a method allowing a diisocyanate compound OCNR1NCO to react with a hydroxyl-containing compound R2(SO2)m(CH2)nOH. The diurethane compound is compounded with multivalent amine crosslinkable group-containing acrylic rubber together with a basic vulcanization accelerator to form an acrylic rubber composition. The acrylic rubber composition including the diurethane compound as a vulcanizing agent decreases a delay in the vulcanization rate due to prevention of scorching and also allows a vulcanized article to satisfy the compression set characteristics.

Abstract: A water-soluble, halogen-resistant film-forming composition useful for packaging water treatment products is disclosed. The film can include an acid-stable, water-soluble polyvinyl alcohol polymer, an oxidizable organic material, a chelating agent, a free radical scavenger, and secondary additives such as plasticizers, lubricants, and surfactants. The resulting film has favorable solubility properties after having been exposed to halogenated (e.g., chlorinated and brominated) compositions such as water treatment and agricultural products for prolonged periods of time.

Abstract: A curable composition has an olefin polymer including hydrolysable silane groups on its main chain; and to a latent compound suitable for releasing a curing catalyst under the action of a rise in temperature and/or actinic radiation.

Abstract: A functionalized polymer defined by the formula ?-R1-?, where ? is a polymer chain, R1 is a bond or a divalent organic group, and ? is a sulfur-containing heterocycle.

Abstract: To provide a compound which has a higher vulcanization efficiency and superior heat aging resistance compared to conventional compounding agents for rubber compositions and which is environmentally friendly. An amine salt compound of a carboxylic acid containing a thermal dissociation portion having the Formula (I): wherein R represents an organic group selected from a C1 to C20 alkyl group, a C3 to C10 cycloalkyl group, a C6 to C20 aryl group and a C7 to C30 alkaryl group, R1, R2 and R3 independently represent a hydrogen atom or a C1 to C20 organic group which may have a heteroatom and/or a substituent group and X represents a C2 to C20 organic group which may have a heteroatom and/or a substituent group and a compounding agent for rubber vulcanization and a rubber composition containing the same.

Abstract: An object of the present invention can be to provide a crosslinking agent which exhibits excellent storage stability and heat resistance and which is used for a composition containing a rubber and/or a resin. Such an object is realized by the compound represented by the following formula (1). In the formula, Z represents an active hydrogen-containing group; X represents a non-cyclic aliphatic group, a cyclic aliphatic group, an aromatic group, or an alkyl aromatic group, which may be optionally substituted and which may contain at least one member selected from SO2, O, N, and S; J1 and J2 which are respectively included at a number of n independently represent a monovalent group, or J1 and J2 together represent a divalent group; R1 which is included at a number of n independently represents hydrogen atom or a non-cyclic aliphatic group; and n represents an integer of 1 to 4.

Abstract: An easily recyclable cross-linked isotactic polypropylene that is additionally miscible with polyethylene is formed from a chemical reaction of combining a polymer, sulfur, peroxide, an accelerator, and at least one additive. The polymer can be mixtures of isotactic polypropylene homopolymer with an elastomer; mixtures of isotactic polypropylene homopolymer with thermoplastic-based mixes; mixtures of isotactic polypropylene copolymer with an elastomer; mixtures of isotactic polypropylene copolymer with thermoplastic-based mixes; or combinations thereof. The accelerator can be a sulfur accelerator.

Abstract: A method for preparing reversibly cross-linked isotactic polypropylene having a degree of crystallinity substantially identical to a degree of crystallinity of a starting polypropylene by mixing in the presence of heat, a polymer of isotactic polypropylene homopolymer; isotactic polypropylene copolymer; mixtures of isotactic polypropylene homopolymer and copolymer with an elastomer, an organic peroxide, and an accelerator, forming macro-radicals; the simultaneously coupling the macro-radicals with a sulfur obtaining an optimum cross-linking degree and a product made by the method.

Abstract: A rubber composition for tire, which combines low heat build-up properties and breakage property, reduces fuel consumption of a tire, and has excellent good processability is provided. The rubber composition for tire is obtained by blending sulfur and caprolactam disulfide with a diene rubber component to obtain a pre-mixture which does not contain a reinforcing filler and a vulcanization accelerator, and blending and mixing a reinforcing filler and a vulcanization accelerator with the pre-mixture in a post-mixing step.

Abstract: Disclosed is a silver halide photographic light-sensitive material, which has at least one polymer compound having a nitrogen-containing aromatic ring having a mercapto group represented by the formula Z-SH wherein Z represents a nitrogen-containing aromatic ring as a partial structure. This silver halide photographic light-sensitive material can stably contain silver halide grains of a high aspect ratio showing high sensitivity and superior planarity, shows superior pressure resistance and can be stably prepared.

Abstract: To provide a compound which has a higher vulcanization efficiency and superior heat aging resistance compared to conventional compounding agents for rubber compositions and which is environmentally friendly. An amine salt compound of a carboxylic acid containing a thermal dissociation portion having the Formula (I): wherein R represents an organic group selected from a C1 to C20 alkyl group, a C3 to C10 cycloalkyl group, a C6 to C20 aryl group and a C7 to C30 alkaryl group, R1, R2 and R3 independently represent a hydrogen atom or a C1 to C20 organic group which may have a heteroatom and/or a substituent group and X represents a C2 to C20 organic group which may have a heteroatom and/or a substituent group and a compounding agent for rubber vulcanization and a rubber composition containing the same.

Abstract: An article of manufacture made of an isotactic polymer, a cross-linking agent, and an accelerator. The cross-linking agent includes a peroxide and a sulfur. The peroxide has an activity ranging from about 40% to about 100%. The ratio of the accelerator to the sulfur ranges from about 1:4 to about 1:10 depending on the activity, and the ratio of the accelerator to the peroxide ranges from about 1:4 to about 1:10 depending on the activity. The article is formed by mixing the polymer, the cross-linking agent, and the accelerator at high shear rates forming a blend. The blend is heated and sent through an extruder at a temperature less than 140 degrees Celsius for less than one minute. The blend is then inserted into a molding, wherein the formed article comprises a resilience value up to about 50 KJ/m2.

Abstract: A block copolymer composition AB is provided that has pendent groups —RZ extending from the A copolymer on at least 70 mol % of the A monomers, where R and Z are each an ionic species. The composition is included in a semipermeable membrane for use in a direct methanol fuel cell. Also described are articles of protective apparel comprising the composition which advantageously has barrier properties as well as superior water vapor transport properties.

Abstract: The invention relates to polymers obtained by S-alkylation of sulfinated polymers with alkylation agents, and AB-cross-linked polymers obtained by reacting polymers containing alkylation groups with low-molecular sulfinates, under S-alkylation, or AB-cross-linked polymers obtained by S-alkylation of sulfinated polymers with polymers containing alkylation groups.

Abstract: A rubber composition for a tread optimizing a vulcanization speed in a vulcanization step and, further, improving heat aging resistance is provided. A rubber composition for a tread comprising 20 to 90 parts by weight of silica, 0.5 to 2 parts by weight of (A) a guanidine vulcanization accelerator, 0.1 to 0.5 part by weight of (B) a thiuram vulcanization accelerator, and 0.5 to 2 parts by weight of (C) a sulfenamide vulcanization accelerator represented by the general formula (1): (wherein R is a linear alkyl group or a branched alkyl group having 1 to 18 carbons), based on 100 parts by weight of a rubber component.

Abstract: A method for making isotactic polymer using a cross-linking agent entails introducing the cross-linking agent to a polymer and an accelerator. The cross-linking agent includes a peroxide and a sulfur. The peroxide has an activity ranging from about 40% to about 100%. The ratio of the accelerator to sulfur or peroxide ranges from 1:4 to 1:10 depending on the activity of the peroxide. The method further entails shearing the polymer in a high shear rate mixer and initiating cross-linking with the peroxide, wherein the accelerator partially inhibits the cross-linking of the peroxide. The method ends by forming macro radicals during the cross-linking; and forming macromolecular chains of polymer with sulfur bridges without the need for high torque. The accelerator ensures that the cross-linking and the formation of sulfur bridges occur simultaneously.

Abstract: A process for preparing low melting copolymers comprising contacting a mixture of olefin monomers with a CpFlu-type metallocene catalyst under reaction conditions sufficient to form a copolymer. The copolymers thus prepared desirably display melt temperatures from about 100° C. to about 140° C. and may be produced with reduced amounts of ethylene. The copolymers may also exhibit reduced levels of undesirable xylene solubles, relatively narrow molecular weight distribution, and other improved optical and physical properties.

Abstract: Polymers grafted with a compound of formula I, formula (I) wherein the general symbols are as defined in claim 1, have outstanding stability against oxidative, thermal, dynamic, light-induced and/or ozone-induced degradation [R1—SOmnR—SOp—R2.

Abstract: Polymer blend compositions of a first polymer component comprising an ethylene propylene copolymer and a second polymer component comprising an isotactic polypropylene copolymer. The first polymer component has a uniform distribution of both tacticity and comonomer between copolymer chains. Further, the first polymer component will exhibit a statistically insignificant intramolecular difference of tacticity.

Abstract: The present invention relates to novel templates useful for generating novel compounds and to compounds produced utilizing the templates. The templates comprise quaternary amino acids that may be linked to solid supports. These templates make possible the production of novel classes of chemical compounds through a plurality of chemical reactions. The templates are advantageous for use in drug discovery regimes.

Abstract: A method for preparing an intrinsically conductive copolymer comprising preparing an emulsion latex in a medium; forming a mixture which comprises at least one cyclic heteroatom containing monomer, the emulsion latex in the medium and an additive under first condition effective to maintain the emulsion latex in a first stabilized emulsion state, causing the monomer in the mixture to polymerize under second condition effective to produce the conductive copolymer in a second stabilized emulsion state. Additives include cyclodextrins, partially alkylated cyclodextrins, poly(vinyl alcohol), partially hydrolyzed poly(vinyl acetate), poly(vinyl acetate) and mixtures thereof.

Abstract: The method of treating a saponified ethylene vinyl acetate copolymer (A) with an acid (B) and/or its salt (C) which comprises feeding a saponified ethylene-vinyl acetate copolymer (A′) in which the acid (B) and/or salt (C) has been incorporated in advance to a column reactor from its top, simultaneously feeding an aqueous solution of the acid (B) and/or salt (C) from the bottom of the reactor to thereby effect a countercurrent contact of (A′) with the aqueous solution of (B) and/or (C), withdrawing the excess of the aqueous solution of acid (B) and/or salt (C) from the reactor top, and continuously withdrawing the treated saponified ethylene-vinyl acetate copolymer from the reactor bottom.