Abstract: A golf ball comprising: an inner core formed from a first substantially homogenous rubber composition comprising a carbon-carbon initiator, the inner core having a geometric center and a first outer surface having a hardness less than that of the geometric center by up to about 20 Shore C; an outer core layer disposed about the inner core formed from a second substantially homogenous rubber composition and comprising a second outer surface having a hardness that is up to about 43 Shore C points greater than the hardness of the geometric center; an inner cover layer disposed about the core comprising an ionomeric material and having a material hardness of about 55 Shore D or greater; an outer cover layer disposed about the inner cover layer comprising a polyurea or polyurethane and having a material hardness of 20 Shore D to 70 Shore D.

Abstract: The present invention relates to curable compositions which are capable of safely and sufficiently bonding components of electrical devices. In particular, the invention relates to two-part, halogen-free curable compositions which are capable of rapidly curing at room temperatures as well as at elevated temperatures.

Abstract: The disclosed is a comb-shaped graft copolymer, including a back bone of PMMA and side chains of a random copolymer, a block copolymer, or a homopolymer polymerized of a monomer having a carbon-carbon double bond. The monomer can be alkyl acrylate, styrene, and the likes. The side chains terminal is grafted to a nitro-oxy compound.

Abstract: Compositions for use in treating and repairing orthopedic defects are provided. The compositions are especially useful for performing percutaneous vertebroplasty, percutaneous kyphoplasty and other procedures. When cured, the compositions are relatively solid but compressible, and prior to curing are viscous liquids with a low enough viscosity to fill voids in cavities such as voids within fractured vertebrae. Optionally, the properties of a composition according to the invention can be adjusted taking into account the hardness and density of the orthopedic structure to be repaired. Also disclosed are devices and methods for using the compositions, and a kit containing components for forming and utilizing the composition.

Abstract: The present invention relates to a novel multi functional additive grafted rubber. More particularly the present invention relates to novel grades of rubber and in particular to chemically grafted with cardanol (meta-penta decenyl phenol) and/or its derivatives. Importantly the rubber grades of the invention involve chemically anchored/grafted selective meta alkenyl phenol and/or its derivatives in the backbone of natural or synthetic rubber. Importantly, such rubber variant of the invention have high plasticity, lower Mooney and melt viscosities, better cure properties as compared to conventional virgin natural rubber or natural rubber plasticized with aromatic process oils.

Abstract: The invention provides a golf ball having a core formed by vulcanizing a rubber composition and a cover composed primarily of a polyurethane material. The rubber composition of the core includes 100 parts by weight of a base rubber, from 10 to 40 parts by weight of an unsaturated carboxylic acid or a metal salt thereof, a peroxyketal (a) and a monophenol-type antioxidant (b), the weight ratio (a)/(b) of the peroxyketal to the monophenol-type antioxidant being from 5 to 50. The ball has an excellent discoloration resistance and an outstanding distance and feel on shots taken with a middle iron.

Abstract: Durable and disposable articles are provided which include a thermoplastic polymer composition, which includes a blend of a polymer and a modified polymer. The modified polymer has covalently bonded pendant substituents derived from cyclodextrin. The articles can be a films, coatings, nonwoven webs, or monolithic articles. An article can have the polymer composition as one part of the article, such as in one distinct area of the article, or on the surface of the article, for example as a coating or surface film. The article can be, for example, a multilayer barrier film, a nonwoven sheet or pad, an absorbent article, or a storage container.

Abstract: The invention relates to novel polyester-polysiloxane block copolymers, to a process for their preparation and to the use of these polymers as a base oil or as an additive in lubricants, especially silicone oils.

Abstract: A thermoplastic elastomeric material includes a vulcanized rubber in a subdivided form surface-grafted with at least one vinyl polymer, wherein the amount of the surface-grafted vinyl polymer is not lower than 60% by weight, preferably not lower than 70% by weight, more preferably not lower than 80% by weight, with respect to the total weight of the surface-grafted vinyl polymer and the vulcanized rubber in a subdivided form.

Abstract: A polypropylene derivative is provided. The polypropylene derivative includes a reactive monomer grafted on polypropylene, with a grafting yield exceeding 5%. A method of preparing the polypropylene derivative is also disclosed. The method includes mixing a reactive monomer, polypropylene, and a compatibilizer in a twin screw extruder to prepare a polypropylene derivative with reactive monomers grafted thereon, with a grafting ratio exceeding 5%.

Abstract: A golf ball has a core obtained by molding and vulcanizing a rubber composition comprising (A) a base rubber which includes a polybutadiene having a cis-1,4 content of at least 60 wt %, (B) an unsaturated carboxylic acid and/or metal salt thereof, (C) an inorganic filler and (D) at least one organic peroxide selected from among 1,1-bis(t-hexylperoxy)cyclohexane, 1,1-bis(t-hexylperoxy)-3,3,5-trimethylcyclohexane, and 2,2-bis(4,4-di-t-butylperoxycyclohexyl)propane. The golf ball has excellent rebound characteristics and flight performance as well as a high productivity due to a reduced vulcanization time.

Abstract: Golf ball compositions including novel processing aids, e.g., metal salts of unsaturated fatty acids, high styrene resins, transpolyisoprene, and transpolybutadiene, for inclusion in rubber-based compositions that reduce safety risks, mixer down time, increase dispersion of the ingredients during processing, and increase component COR over that of a component formed with a conventional processing aid.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: It has been discovered that improved polystyrene products may be obtained by polymerizing styrene in the presence of at least one multifunctional initiator, at least one chain transfer agent, and at least one cross-linking agent. The presence of the multifunctional initiator tends to cause more branched structures in the polystyrene. A mathematical model that helps optimize the levels of these additives for given molecular weights, melt flow indices (MFIs) and zero shear viscosities (?0) has also been discovered.

Abstract: A golf ball comprising a core and a cover, wherein at least the core or the cover comprises an elastomeric composition comprising a base polymer and a carbon-carbon initiator.

Abstract: A thermoplastic elastomer composition excellent in softness, permanent compression set (both short- and long-term), and controlled in bleed-out of the softening agent as well as a formed article and composite formed article of the above thermoplastic elastomer composition. The thermoplastic elastomer composition contains: (a) 100 parts by weight of at least one hydrogenated block copolymer, (b) 30 to 150 parts by weight of a non-aromatic-type softening agent for rubber; and (c) 3 to 100 parts by weight of a petroleum hydrocarbon resin having a softening point of 80 to 170° C., the resin exhibiting a melt viscosity of 10 poise at a temperature in the range of 120 to 250.

Abstract: There is provided a process for producing a modified polyolefin resin, which comprises the steps of: (1) blending at least the following components (A) to (D) to produce a blend: (A) 100 parts by weight of a polyolefin resin, (B) from 0.1 to 20 parts by weight of a compound having an epoxy group and an unsaturated bond, (C) from 0.01 to 20 parts by weight of an organic peroxide having a decomposition temperature of from 50 to 115° C., at which temperature a half-life thereof is 1 minute, and (D) from 0 to 20 parts by weight of an organic peroxide having a decomposition temperature of from 150 to 200° C., at which temperature a half-life thereof is 1 minute, and (2) melt-kneading said blend to produce a modified polyolefin resin.

Abstract: It has been discovered that improved polystyrene products may be obtained by polymerizing styrene in the presence of at least one multifunctional initiator, at least one chain transfer agent, and at least one cross-linking agent. The presence of the multifunctional initiator tends to cause more branched structures in the polystyrene. A mathematical model that helps optimize the levels of these additives for given molecular weights, melt flow indices (MFIs) and zero shear viscosities (&eegr;0) has also been discovered.

Abstract: A golf ball and a method of making a golf ball that includes a center formed from a material including polybutadiene and having a high resilience, at least one cover layer formed of a material including polyurethane, and at least one wound layer of a tensioned material windings between the center and the cover. The polyurethane composition is formed from the reaction product of at least a prepolymer of a polyisocyanate and a polyol, and a diamine curing agent. The polybutadiene composition includes a butadiene polymer with a resilience index greater than about 40 and a weight average molecular weight greater than about 200,000. Such golf balls can have a coefficient of restitution that is optimized for low swing speed players. The wound layer of the present invention may be applied to golf balls having liquid or solid centers to achieve desired golf ball characteristics.

Abstract: An anisotropically electroconductive film, which has a high reliability in its capacity for conducting electricity and also a good adhesion under such an adhesive condition that the film is heated at a temperature of 130° C. or less for a short period of time, has a layer of an adhesive within which electroconductive particles are distributed. The adhesive is composed of a thermosetting resin composition including a base resin, a reactive compound, an organic peroxide and a reaction accelerating compound, and also the electroconductive particles incorporated into the thermosetting resin composition. The base resin is a polyacetalized resin which is obtained by acetalizing a polyvinyl alcohol. The reactive compound is at least one selected from a group consisting of acryloxy group-bearing compounds, methacryloxy group-bearing compounds and epoxy group-bearing compounds. The reaction accelerating compound is a compound which has a radically reactive group and alkali-reactive group as its end groups.

Abstract: A low compression, resilient golf ball having a center and a cover, made from a polybutadiene reaction product having polybutadiene, a cis-to-trans catalyst including a Group VIA element, such as at least one of sulfur, polymeric sulfur, selenium, or tellurium, and a free radical source. The reaction product typically has a first dynamic stiffness measured at −50° C. that is less than about 130 percent of a second dynamic stiffness measured at 0° C. A multi-layer golf ball having a center, at least one intermediate layer disposed concentrically about the center, and a cover. At least a portion of at least one of the center, intermediate layer, or both, are made from a reaction product including polybutadiene having a cis-to-trans catalyst that includes at least one elemental sulfur, polymeric sulfur, selenium, or tellurium component and a free radical source.

Abstract: The present invention is directed to radical-curable adhesive compositions which include a (meth)acrylate component; a thermal resistance-conferring component; and a radical cure-inducing composition. Reaction products of the compositions of this invention exhibit superior resistance of thermal degradation.

Abstract: The present invention is directed to radical-curable adhesive compositions which include a (meth)acrylate component; a thermal resistance-conferring component; and a radical cure-inducing composition. Reaction products of the compositions of the compositions of this invention exhibit superior resistance to thermal degradation.

Abstract: Copolymers having copolymerized units of vinylidene fluoride, perfluoro(alkyl vinyl) ether, 2-hydropentafluoropropene, and, optionally, tetrafluoroethylene, exhibit excellent low temperature properties and processability when cured with polyhydroxy compounds or amines.

Abstract: The present invention relates to a multiphase thermoplastic composition consisting of a mixture (I) including at least one ethylene polymer (A) which has units derived from unsaturated epoxy and at least one thermoplastic resin (B) partly encapsulated by the said ethylene polymer (A), the said mixture (I) being dispersed in a matrix of thermoplastic resin (C).

Abstract: A copolymer of isobutylene with 0.5 to 15 mole percent of a conjugated diene (i.e., a butyl rubber) is reacted with a silane having both an alkenyl group as well as at least two silicon-bonded hydrolyzable group, the reaction taking place in the presence of a free-radical generator, to provide a modified copolymer having reactive silyl groups grafted thereto. The modified copolymer exhibits a reduced molecular weight relative to the starting copolymer and may be used to formulate moisture-curable sealants, caulks, adhesive and coatings.

Abstract: The present invention is directed to a golf ball containing a cover layer and a core layer, where the core layer is molded from a scorch retarding composition comprising a scorch retarding peroxide, an elastomeric polymer and a cross-linking agent. Preferably, the scorch retarding peroxide is present in an amount sufficient to delay cross-linking of the elastomeric polymer during core layer formation for a time sufficient to substantially prevent backrinding on the molded core layer. The golf balls of the invention may further comprise at least one intermediate layer interposed between the cover layer and the core layer, at least one of the layers being molded from a scorch retarding composition comprising a scorch retarding peroxide, an elastomeric polymer and a cross-linking agent. A method of making such golf balls is also disclosed.

Abstract: Copolymers having copolymerized units of vinylidene fluoride, perfluoro(alkyl vinyl) ether, 2-hydropentafluoropropene, and, optionally, tetrafluoroethylene, exhibit excellent low temperature properties and processability when cured with polyhydroxy compounds or amines.

Abstract: Fluoroelastomers containing copolymerized units of vinylidene fluoride, perfluoro(alkyl vinyl)ether, 2-hydropentafluoropropene, and, optionally, tetrafluoroethylene, and having an iodine atom present at some polymer chain ends, exhibit excellent low temperature properties and processability when dual cured with both polyhydroxy compounds and organic peroxides.

Abstract: Compositions for the polymer curing, comprising: a) one or more organic peroxides and b) 3,7-Dimethyl-1,3,6-Octatriene (OCIMENE).

Abstract: A process for preparing emulsion polymer particles comprising: (a) providing an aqueous emulsion of a multistage core-shell polymer with a hydrophilic core, (b) adding one or more inhibitors to substantially stop any polymerization, (c) adding monomer to the emulsion polymer, (d) adding swelling agent and (e) reducing the level of monomer by at least fifty percent. The process produces multistage polymers having low dry-bulk density useful in coating compositions such paints and paper coatings.

Abstract: Fluoroelastomers containing copolymerized units of vinylidene fluoride, perfluoro(alkyl vinyl) ether, 2-hydropentafluoropropene, and, optionally, tetrafluoroethylene, and having an iodine atom present at some polymer chain ends, exhibit excellent low temperature properties and processability when dual cured with both polyhydroxy compounds and organic peroxides.

Abstract: Curable silylated copolymers based on olefin copolymers comprising at least one C4 to C7 isomonoolefin and a vinyl aromatic monomer (alkyl styrene) are prepared by reacting the olefin copolymer with an olefinically unsaturated hydrolyzable silane in the presence of a free radical generating agent. The silylated copolymers are readily curable by contact with water (moisture) and a silanol condensation catalyst and are particularly useful as the polymeric component in sealant, caulking, adhesive and coating formulations.

Abstract: The invention concerns a reagent kit designed to produce elements of synthetic resin for anchoring fixation elements in place by bonding them in multi-cavity plugs. The reagent kit comprises (a) a reagent mixture containing 2,2-bis-[4-(methacryloxyethoxy)phenyl]propane and an optionally unsaturated polyester resin, vinyl resin or acrylic resin or a mixture of these, (b) an accelerator component comprises an organic peroxide and (c) a filler component, the accelerator component (b) being kept separate from the reagent mixture (a) before use.

Abstract: Continous process for grafting a polyolefin within a melt including a polyolefin of linear olefin containing from 2 to 8 carbon atoms, a graftable functional monomer and a radical-generator, in an extruder including at its exit a compression zone followed by a discharge zone, in which at least one antioxidant additive is introduced into the melt not later than before the latter enters the compression zone of the extruder.Stabilized grafted polyolefin obtained by means of this process.

Abstract: A modified polypropylene resin obtained by melt-kneading a polypropylene resin, an isoprene monomer and a radical polymerization initiator, which has a high melt viscosity and a high melt tensile strengh and is hard to cause draw-down, and which provides, by foaming thereof, foamed articles having low density, high closed cell content, beautiful appearance and excellent heat resistance.

Abstract: A curable resin composition comprising:(1) a polymerizable vinyl monomer having a structure of the formula (A):Z--R--(R.sub.2 O).sub.p --R.sub.1 (A)wherein Z is a (meth)acryloyl group, R.sub.1 is a phenyl group or a phenyl group having a C.sub.1-3 alkyl group, R.sub.2 is --C.sub.2 H.sub.4 --, --C.sub.3 H.sub.6 --, --CH.sub.2 CH(CH.sub.3)--, --C.sub.4 H.sub.8 -- or --C.sub.6 H.sub.12 --, and p is an integer of from 1 to 10 and wherein R is a direct bond,(2) a polymerizable vinyl monomer having a structure of the formula (B): ##STR1## wherein Z and R.sub.2 are as defined above, R.sub.3 is hydrogen or a C.sub.1-4 alkyl group, and q is an integer of from 0 to 8,(3) a polymerizable vinyl monomer having a structure of the formula (C):Z--O--(R.sub.2 O).sub.p --H (C)wherein Z, R.sub.2 and p are as defined above,(4) an organic peroxide, and(5) a reducing agent.

Abstract: The present invention relates a toner for developing electrostatic images, comprising: a resin composition, which contains a binder resin and low molecular weight wax, and a coloring agent, wherein the binder resin does not substantially contain insoluble tetrahydrofuran (THF) component, its chromatograph measured with soluble tetrahydrofuran (THF) component has a main peak in a region of a molecular weight of 2,000 to 30,000 and a subpeak or a shoulder in a high molecular weight region of a molecular weight of 100,000 or more, a ratio of weight average molecular weight (Mw)/number average molecular weight (Mn) thereof is 30 or more, the high molecular weight region has a crosslinking monomer unit as a component monomer unit and the binder resin contains high molecular weight polymer having a Mw of 1,200,000 or more polymerized by using both polyfunctional initiator and a mono-functional initiator. Moreover, the present invention relates to a method of manufacturing a resin composition for producing a toner.

Abstract: A process for the preparation of branched thermoplastic resins comprising: heating a mixture of an unsaturated resin, a free radical initiator, and a stable free radical agent; adding to the heated mixture at least on polymerizable monomer; and cooling the mixture, wherein the resulting product is a branched thermoplastic resin with arms or branches comprised of polymerized monomer with substantially uniform length and narrow polydispersity.

Abstract: The rubber mixtures according to the invention, containing at least one vulcanising agent, a filler, optionally other rubber additives and at least one reinforcing additive of the formulaR.sup.1 R.sup.2 R.sup.3 Si--X.sup.1 --(--S.sub.x --Y--).sub.m --(--S.sub.x --X.sup.2 --SiR.sup.1 R.sup.2 R.sup.3).sub.nare used for the preparation of vulcanised rubbers, wherefrom in particular tires having a low rolling resistance combined with a good wet skid resistance and a high abrasion resistance can be produced.

Abstract: The invention relates to the preparation of a graft copolymer latex of core/shell dispersion particles having improved phase binding between core and shell in a two-stage emulsion polymerization process, hydroperoxide groups being produced at the particle surface of the grafting base prior to grafting by hydrogen peroxide treatment.

Abstract: A modified polyvinyl alcohol and a solid state process for producing modified polyvinyl alcohol wherein polyvinyl alcohol powder is sprayed with a sufficient amount of a solution of a polymerizable monomer to swell the polyvinyl alcohol powder but not dissolve it or form a slurry. The swollen polyvinyl alcohol powder is sprayed with a free radical source (an initiator) and the temperature is raised to initiate a reaction between polyvinyl alcohol and the polymerizable monomer.

Abstract: There are disclosed a process for producing a vinyl ester polymer having a high degree of polymerization at a high efficiency, which process comprises subjecting a vinyl ester monomer to seed polymerization by the use of a vinyl ester polymer emulsion as a seed emulsion under the conditions in which the charge of a water-soluble initiator per unit volume (1 liter) of reactant liquid charge is 1.times.10.sup.-8 to 2.times.10.sup.-4 mol, and the charge of the water-soluble initiator per one particle of the vinyl ester polymer particles in the seed emulsion is 1.times.10.sup.-28 to 1.times.10.sup.-20 mol, and a process for producing a vinyl alcohol polymer at a high efficiency from the vinyl ester polymer thus obtained.According to these processes of the present invention, both a vinyl ester polymer and vinyl alcohol polymer each having a higher degree of polymerization can be produced with ease on an industrial scale.

Abstract: A dental adhesive composition comprising, as the main components, (a) a polymer powder obtained by radical copolymerization of at least one (meth)acrylate unsaturated monomer containing no carboxyl or anhydride group in its molecule, with a silane compound having a polymerizable unsaturated group, (b) at least one radical polymerizable unsaturated monomer, and (c) a radical polymerization initiator.

Abstract: The mixture consists of at least one organic peroxide, at least one hydroquinone derivative of the general formulae I and/or II and/or III ##STR1## wherein R and R.sup.1, which may be identical or different, stand for H or t-alkyl, and X stands, for example, for C.sub.1-18 -alkylene, and a crosslinkage promoter, and permits the crosslinkage of polymers and at the same time extends the scorch time, which must be understood as the processing time.

Abstract: A peroxide-vulcanized rubber composition which comprises the vulcanization reaction product of a rubber, an organic peroxide, a biscitraconimido compound and a radical scavenger, is disclosed. The peroxide-vulcanized rubber compositions of the disclosure have significantly improved physical properties. Also disclosed are a peroxide-vulcanization process carried out in the presence of a biscitraconimido compound and a radical scavenger to control the scorch time and the use of a biscitraconimido compound and a radical scavenger to control scorch time in the peroxide-vulcanization of rubber.