Abstract: The invention relates to a polymer composition comprising a polyethylene and a crosslinking agent, wherein the polymer composition contains a total amount of vinyl groups which is B vinyl groups per 1000 carbon atoms, and B1?B, wherein B1 is 0.88, when measured prior to crosslinking according to method ASTM D624898; and wherein the crosslinking agent is present in an amount which Z wt %, based on the total amount (100 wt %) of the polymer composition, and Z?Z2, wherein Z2 is 0.60, an article being e.g. a cable, e.g. a power cable, and processes for producing a polymer composition and an article; useful in different end applications, such as wire and cable (W&C) applications.

Abstract: The invention relates to a polymer composition comprising a polyethylene and a crosslinking agent, characterized in that the polymer composition contains a total amount of vinyl groups which is B vinyl groups per 1000 carbon atoms, and B1?B, wherein B1 is 0.88, when measured prior to crosslinking according to method ASTM D6248-98; and in that the crosslinking agent is present in an amount which is Z wt %, based on the total amount (100 wt %) of the polymer composition, and Z?Z2, wherein Z2 is 0.30, an article being e.g. a cable, e.g. a power cable, and processes for producing a polymer composition and an article; useful in different end applications, such as wire and cable (W&C) applications.

Abstract: The present disclosure provides processes for producing polyethylene resins. In at least one embodiment, a polyethylene has: a density of from about 0.91 g/cm3 to about 0.94 g/cm3; a value of Mz of about 1,500,000 g/mol or greater; and a ratio of Mz to Mw of about 7 or greater. A process includes introducing a first feed stream having ethylene monomer and a first free radical initiator to a first inlet of a first reaction zone, where the first reaction zone has a first inlet temperature. The process further includes introducing a second feed stream having ethylene monomer and a second free radical initiator to a second inlet of a second reaction zone, where the second reaction zone has a second inlet temperature that is the same or different than the first inlet temperature.

Abstract: A process and printer systems for printing a three-dimensional object are disclosed. The processes may include providing a non-crosslinked peroxydicarbonate-branched polypropylene filament, flake, pellet, or powder adapted for one of a fused deposition modeling (ARBURG Plastic Freeforming) printer or a fused filament fabrication printer; and printing the non-crosslinked peroxydicarbonate-branched polypropylene with fused deposition modeling (ARBURG Plastic Freeforming) printer or a fused filament fabrication printer to form a three-dimensional article. The printer systems may include one or more print heads for printing a polymer provided in filament, powder, flake, or pellet form to form a three-dimensional article; and one or more feed systems for providing a non-crosslinked peroxydicarbonate-branched polypropylene to a respective print head.

Abstract: Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin.

Abstract: A composition comprising the reaction product of a polypropylene comprising at least 50 mol % propylene, and having a molecular weight distribution (Mw/Mn) greater than 6, a branching index (g?vis) of at least 0.97, and a melt strength greater than 10 cN determined using an extensional rheometer at 190° C.; and within the range from 0.01 to 3 wt % of at least one organic peroxide, by weight of the polypropylene and organic peroxide. Such hyperbranched polypropylenes are useful in films, foamed articles, and thermoformed articles.

Abstract: The present invention provides a morphology modified heterophase polymer having No-Break impact strength in the range of 500 J/m-700 J/m as per ASTM standard D256, a high melt flow index in the range of 100 g/10 min as per ASTM D1238, and a balanced flexural modulus as per ASTM standard D790. More particularly, the present invention relates to a process for the modification of morphology of heterophase propylene polymer in the presence of an initiator in the form of organic peroxide and a multifunctional unsaturated organic vinyl compound on the ex-reactor Heterophase Propylene Copolymer powder and/or pellet using special extrusion device.

Abstract: A process to form a polypropylene composition comprising combining at a temperature within a range from 190° C. to 320° C. a polypropylene resin and within the range from 0.01 wt % to 3 wt % of at least one organic peroxide, by weight of the polypropylene composition and within a range from 100 to 4000 ppm each of phosphorous- and hindered phenol antioxidants; the polypropylene resin comprising at least 50 mol % propylene, and having a molecular weight distribution (Mw/Mn) greater than 6, a branching index (g?) of at least 0.97, and a melt strength greater than 10 cN determined using an extensional rheometer at 190° C. The resulting polypropylene composition comprises at least 50 mol % propylene and has a peak extensional viscosity of greater than 500 kPa·s at a strain rate of 0.01 sec?1 (190° C.) and a melt strength of at least 40 determined using an extensional rheometer at 190°.

Abstract: The present invention discloses a modified polypropylene composition with higher flow activation energy and reduced necking in extrusion film/coat, wherein the composition comprises long chain branched polypropylene; a free radical initiator; a primary antioxidant; a secondary antioxidant; an acid neutralizer; and optionally a multifunctional monomer. Further the said composition of polypropylene shows higher sensitivity of viscosity to temperature, with improved stretchability.

Abstract: An encapsulating material for solar cell containing an ethylene/?-olefin copolymer satisfying the following a1) and a2), and a specific peroxyketal having a 1-hour half-life temperature in a range of 100 to 135 degrees centigrade; the peroxyketal being contained in an amount of 0.1 to less than 0.8 weight parts relative to 100 weight parts of the ethylene/?-olefin copolymer. a1) the shore A hardness is from 60 to 85 as measured in accordance with ASTM D2240. a2) MFR is from 2 to 50 g/10 minutes as measured under the conditions of a temperature of 190 degrees centigrade and a load of 2.16 kg in accordance with ASTM D1238.

Abstract: Several processes for the manufacture of thin-walled tubes are described, including: injection moulding an article and annealing the article, injection moulding a blend of a polymer and a high melt flow polymer, injection moulding a blend of a polymer and nanoparticles or nanocomposites. Using nanoparticles to improve ESCR and/or tear resistance of a polymer or blend is also disclosed.

Abstract: The invention relates to a process for increasing the melt flow index of a propylene polymer, the process comprising melt mixing the propylene polymer in the presence of aqueous hydrogen peroxide.

Abstract: Solution suitable for accelerating the cure of a curable resin using a peroxide, said accelerator solution comprising (i) at least one organic solvent, (ii) a manganese salt, a copper salt, or a combination thereof, and (iii) an iron complex of a tetradentate, pentadentate or hexadentate nitrogen donor ligand.

Abstract: This invention pertains to a polymeric composition and an antimicrobial composition, each comprising a superabsorbent polymer (SAP), such as used in diapers and sanitary napkins, and peroxide. The superabsorbent material can be made by the process of treating a preformed SAP, such as a crosslinked polyacrylate salt, with a treatment solution comprising hydrogen peroxide dissolved in water, followed by drying. The resulting superabsorbent material has strong antimicrobial activity. Optionally, the treatment solution may also contain a metal salt, including those of zinc, zirconium, and magnesium.

Abstract: A method for manufacturing a composition including telechelic oligomers the ends of which carry reactive functions, the method including the contacting of at least one waste material containing rubber, preferable tire waste, with a chemical degradation agent selected from cleavage agents that are specific for double bonds; and a transfer agent in the presence of a catalysts; at a temperature from 15 to 400° C., preferably from 17 to 35° C.; at ambient pressure. The composition of oligomers that can be prepared by the method is also described.

Abstract: The present invention provides a method for producing epoxidized natural rubber with high productivity and at low cost, a rubber composition for a tire containing the epoxidized natural rubber, and a pneumatic tire formed from the rubber composition for a tire. The present invention relates to a method for producing epoxidized natural rubber, the method including: step (1) of reacting an acid anhydride with hydrogen peroxide to prepare an organic peracid; and step (2) of epoxidizing natural rubber latex with the obtained organic peracid.

Abstract: An initiator composition, including: at least two compounds represented by the chemical formula of R—CO—O—O—CO—R and a compound represented by the chemical formula of R1—CO—O—O—R2, where R represents a C2-C12 alkyl or a C6-C10 aryl or substituted aryl, R1 represents a C1-C10 alkyl or a C6-C10 aryl, and R2 represents a C1-C10 alkyl.

Abstract: The present invention discloses a method for producing an epoxidized polymer. The method comprises the steps of: (1) providing a polymer solution containing a polymer having a conjugated diene group; (2) providing a catalyst solution dissolved in the polymer solution, the catalyst solution containing a transition metal ion and a ligand for bonding to the transition metal ion, the transition metal ion being selected from the group consisting of Ti, Mn, V, Mo, W and any combination thereof; and (3) epoxidizing double bonds of the conjugated diene group to produce the epoxidized polymer by providing an epoxidizing agent dissolved in the polymer solution containing the catalyst solution, wherein the epoxidizing agent is meta-chloroperoxybenzoic acid (mCPBA) or analogs thereof.

Abstract: This invention relates to polymers containing structural units derived from itaconic acid which are useful as binders for fiberglass.

Abstract: Methods and compositions are provided that relate to weighted elastomers. The weighted elastomers may comprise an elastomer and a weighting agent attached to an outer surface of the elastomer. An embodiment includes a method of cementing that comprises providing a cement composition containing cement, water, and a weighted elastomer. In addition, the cement composition may be introduced into a subterranean formation and allowed to set therein.

Abstract: The invention provides a rubber composition for golf balls which includes: (A) a base rubber containing a polybutadiene having a cis-1,4 bond content of at least 60 wt %; (B) an unsaturated carboxylic acid and/or a metal salt thereof; (C) an anthranilic acid derivative of the general formula wherein R1 and R2 are each independently a hydrogen atom or a hydrocarbon group of 1 to 20 carbons, m is an integer from 1 to 4, and n is an integer from 1 to 3, with the proviso that if m and/or n is 2 or more, each occurrence of R1 and R2 may be the same or different; and (D) sulfur. The rubber composition for golf balls of the invention enables a high-quality molded and crosslinked product having a suitable hardness and a high resilience to be obtained.

Abstract: Rubber composition for golf balls which includes: (A) a base rubber containing a polybutadiene having a cis-1,4 bond content of at least 60 wt %; (B) an unsaturated carboxylic acid and/or a metal salt thereof; (C) an anthranilic acid derivative of the general formula wherein R1 and R2 are each independently a hydrogen atom or a hydrocarbon group of 1 to 20 carbons, m is an integer from 1 to 4, and n is an integer from 1 to 3, with the proviso that if m and/or n is 2 or more, each occurrence of R1 and R2 may be the same or different; and (D) an organic peroxide having a one-minute half-life temperature which is at least 158° C. and less than 175° C. The rubber composition for golf balls of the invention enables a high-quality molded and crosslinked product having a suitable hardness and a high resilience to be obtained.

Abstract: Linear perfluoropolyethers of formula: T-O (CF2O)n (CF2CF2O)m (CF2CF2CF2O)r (CF2CF2CF2CF2O)s-T1??(I) wherein n, m, r, s are integers such that the polymer number average molecular weight is comprised between 700 and 100,000 and the n/(n+m+r+s) ratio ranges from 0.05 to 0.40, and respective preparation process by addition of a peroxidic perfluoropolyether of formula (III): T4-O(CF2O)n, (CF2CF2O)m, (O)h-T5??(III) having a PO from 1.8 to 4, to a perfluoropolyether oil preheated at a temperature comprised between 150° C. and 250° C. and subsequent exhaustive fluorination of the obtained compound.

Abstract: Packaged formulation comprising a compound liable to exothermic decomposition and optionally one or more organic diluents, said formulation being packaged in a container with a volume of at least 250 liter provided with a vent to release gases and made from a thermoplastic material having a Vicat B softening temperature not higher than (a) the run-away temperature of the compound liable to exothermic decomposition if the formulation does not contain any diluent, or (b) the boiling temperature of at least 50 wt % of the total weight of diluent if the formulation does contain organic diluent.

Abstract: A cross-linkable fluoroelastomer remarkably excellent in cross-linkability and a method for its production, a fluoroelastomer composition excellent in the cross-linked physical properties, and a cross-linked rubber. A cross-linkable fluoroelastomer having a Mooney viscosity of from 20 to 300, obtainable by heat-treating a mixture of a fluoroelastomer (A), an organic peroxide (B) and at least one additive (C) selected from the group consisting of a C12-28 higher fatty acid, a metal salt of a C12-28 higher fatty acid, an ester of a C12-28 higher fatty acid, an amide of a C12-28 higher fatty acid and a C12-28 higher aliphatic alcohol, at a temperature of from 110 to 380° C.

Abstract: A golf ball that includes (a) a core comprising a center; (b) an outer cover layer; and (c) one or more intermediate layers; wherein at least one of the core, the outer cover layer, or the intermediate layer comprises a composition that includes (i) at least one polyalkenamer and at least one polyamide or (ii) at least one polyalkenamer. A method for making a golf ball comprising a core, one or more intermediate layers and an outer cover layer is also disclosed, wherein the method includes forming a blend comprising at least one polyalkenamer rubber and at least one polyamide; and injection molding the blend into a spherical mold to form the intermediate or outer cover layer. Also disclosed is a polymer composition that includes at least one polyalkenamer and at least one thermoplastic copolyamide elastomer.

Abstract: Disclosed herein are functionalized polymers comprising ethylene and substituted ethylene segments, which have been modified by epoxidation to enhance their crosslinking ability. These functionalized polymers are useful as film forming resins in cathodic electrocoating compositions. Also disclosed herein are aqueous dispersion compositions comprising the functionalized polymers and a process for coating various electrically conductive substrates.

Abstract: Disclosed is a method for producing a modified propylene polymer that exhibits low flowability and also exhibits little fluctuation in melt flow rate compared with the melt flow rate of the propylene polymer before modification, the method involving a heat treatment step of subjecting a mixture comprising 100 parts by weight of a propylene polymer (A), from 0.1 to 50 parts by weight of an ethylenically unsaturated bond-containing compound (B), and from 0.01 to 20 parts by weight of an organic peroxide (C) whose decomposition temperature at which the half-life thereof becomes 1 minute is lower than 120° C. to heat treatment by using an extruder at a temperature lower than the decomposition temperature of the organic peroxide (C) at which the half-life thereof becomes 1 minute.

Abstract: A resin composition for a solar cell encapsulant is provided, containing an ethylene•?-olefin copolymer and an organic peroxide or a silane coupling agent or the like, and having superior heat resistance, transparency, flexibility and adhesion property to a glass substrate, as well as good balance between rigidity and cross-linking efficiency, as well as a solar cell encapsulant, and a solar cell module using the same. The resin composition has an ethylene•?-olefin copolymer (A), having the characteristics (a1) to (a4), along with characteristics (a5) or (a6), and an organic peroxide (B) and/or a silane coupling agent (C).

Abstract: This invention relates to relates to a polyolefin composition comprising one or more of the following formulae: wherein the PO is the residual portion of a vinyl terminated macromonomer (VTM) having had a terminal unsaturated carbon of an allylic chain and a vinyl carbon adjacent to the terminal unsaturated carbon.

Abstract: A peroxide-crosslinkable fluorine-containing elastomer IS produced by subjecting a fluorine-containing olefin and a perfluoroalkyl divinyl ether monomer represented by the general formula: CF2?CF—[OCF2CF(CF3)]aO(CF2)bO[CF(CF3)CF2O]c—CF?CF2 wherein a+c is an integer of 0 to 4 and b is an integer of 2 or more, to a copolymerization reaction; wherein the perfluoroalkyl divinyl ether monomer is added for copolymerization separately before and after the copolymerization reaction starts, or the total amount thereof is added for copolymerization after the copolymerization reaction starts. A peroxide-crosslinked molded product of the obtained fluorine-containing elastomer exhibits high compression set characteristic, while reducing a decrease in breaking strength, a decrease in elongation at break or an increase in hardness.

Abstract: A process For the production of a thermoplastic polymer including carbon and sulphur in an atomic ration of C:S of at least 4 and at most 36 using thiol-ene addition polymerization, preferably with feedstocks obtained from renewable resources such as fatty acids from vegetable origin. The product is preferably aliphatic, meaning that at most 70% of the protons are present as aromatic hydrogen atoms and, if oxygen atoms are present in ester functions, the atomic ratio of the oxygen atoms present in ester functions relative to the number of sulphur atoms in the polymer is less than 1.0. The polymer may be used to produce a shaped article.

Abstract: Disclosed is a method for viscosity breaking of a polypropylene polymer, a polypropylene copolymer or a polypropylene polymer blend, which process comprises adding a chain transfer agent and an initiator to a polypropylene polymer, polypropylene copolymer or polypropylene polymer blend and heating the resultant composition. The chain transfer agent has a Cs value of greater than or equal to about 0.04 as measured in ethylene polymerization at 130° C. The initiator is for example an organic or inorganic peroxide, a carbon based radical generator, a bis azo compound, a stable nitroxyl compound, a sterically hindered NO-acyl compound or a sterically hindered alkoxyamine compound.

Abstract: Provided are new partially hydrogenated nitrile rubbers which are distinguished by a specific ratio of viscosity to molecular weight, and also vulcanizable mixtures and vulcanizates based on said rubbers, and also the associated preparation processes. The partially hydrogenated nitrile rubbers lead to compounded formulations having advantageous processing properties in conjunction with excellent vulcanizate properties.

Abstract: The present invention relates to an equipment and method for producing polymer pellets which comprise one or more polymer components and one or more further components, wherein in said process at least one of said one or more further components is incorporated into pellets by applying a liquid, which comprises said at least one component, onto said pellets.

Abstract: The present invention relates to novel polymer-bound adducts useful as cure components for anaerobic curable compositions. The compositions are particularly useful as adhesives and sealants.

Abstract: Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises: exposing the aqueous fluoropolymer dispersion to hydrogen peroxide.

Abstract: [Object] To provide a fluororubber-based sealing material which is excellent in sealing properties under high/low temperature load and is capable of sealing at a temperature of not higher than ?40° C. even when gas oil (diesel fuel) is used. [Means for Solving] A fluororubber-based sealing material obtained by crosslinking a composition for a fluororubber-based sealing material, said composition comprising 100 parts by weight of a fluorine-containing copolymer which contains 64 to 69% by weight of fluorine, has a crosslinking site derived from a bromine-containing compound and/or an iodine-containing compound and is capable of being crosslinked by a peroxide, 0.

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: This invention relates to polymers containing structural units derived from itaconic acid which are useful as binders for fiberglass.

Abstract: The invention relates to a system for preparing a polymerized bone cement, including two components reacting with each other when they are mixed to form a solid polymer material. The first component may include a biocompatible acrylic polymer and an initiator capable of initiating a polymerization reaction. The second component may include a monomer capable of dissolving an acrylic polymer, a polymerization activator and a polymerization inhibitor, system in which the second component also includes a biocompatible acrylic polymer dissolved in said monomer, identical or different from the polymer of the first component with an average molar mass greater than 1,000,000 g/mol and a residual initiator content of less than 0.1% to form a gel with determined viscosity. Another object of the invention is a composition designed to constitute the second component of as system used to prepare such cement.

Abstract: A packaged peroxide formulation comprising a container and a liquid peroxide formulation, wherein said container has a volume of at least 50 litres and a vent area/volume ratio of at least 20·10?3 m2/m3, said liquid peroxide formulation satisfies the classification tests for organic peroxide type F, has a conductivity of at least 100 pS/m, is not an emulsion or suspension, and comprises (i) at least 33 wt % of an organic peroxide selected from the group consisting of diacyl peroxides, peroxyesters, peroxydicarbonates, peroxyketals, and monoperoxycarbonates, and (ii) optionally a phlegmatiser, the packaged peroxide formulation has a vent area that is at least equal to the minimum total vent area as determined by the 10 litre venting test.

Abstract: A noncrystalline fluoroelastomer which is a copolymer consisting essentially of vinylidene fluoride and a fluoromonomer represented by the general formula (1): CH2?CFRf??(1) wherein Rf is a straight or branched fluoroalkyl group containing 1 to 12 carbon atoms, and has a vinylidene fluoride units/fluoromonomer units mol ratio of 78/22 to 22/78 and a glass transition temperature of not higher than 25° C.

Abstract: A polymeric resin having a lower molecular weight (LMW) component and a higher molecular weight (HMW) component and the resin having a density of from about 0.955 g/cc to about 0.967 g/cc, a melt index of from about 0.5 dg/min to about 4.0 dg/min, and a zero shear viscosity of from about 3.0×103 Pa-s to about 4.0×104 Pa-s. A method comprising providing a catalyst system comprising at least one transition metal complex, an activator support, and a cocatalyst; contacting the catalyst system with an olefin under conditions suitable to form a polyolefin, wherein the polyolefin has a HMW component and a LMW component; and recovering the polyolefin, wherein the polyolefin has a melt index of from about 0.5 dg/min to about 4.0 dg/min, and a zero shear viscosity of from about 3.0×103 Pa-s to about 4.0×104 Pa-s.

Abstract: A (per)fluoroelastomeric composition curable by peroxidic way comprising for 100 phr of (per)fluoroelastomer: as filler, from 2 to 70 phr of carbon black having a surface area between 25 and 35 m2/g; as crosslinking agent, from 0.5 to 10 phr of a bis-olefin having general formula: wherein: R1, R2, R3, R4, R5, R6, equal to or different from each other, are H or C1-C5 alkyls; Z is selected between a linear or branched C1-C18 alkylene or cycloalkylene radical, optionally containing oxygen atoms, preferably at least partially fluorinated, or a (per)fluoropolyoxyalkylene radical.

Abstract: This invention relates to the fields of polymer chemistry, materials science and ophthalmology. More particularly it relates to optical components and method(s) of preparing same from hydrophobic acrylic (HA) monomer(s) that exhibit reduced or eliminated glistenings when implanted in a patient's eye. The method of this invention uses a mixture of one or more low temperature initiators (LTI) combined with one or more high temperature initiators (HTI), to polymerize one or more HA monomers to produce an optical HA polymer which, when used to manufacture an optical component and implanted as with an intraocular lens (IOL), exhibit reduced glistenings to the patient.

Abstract: A two-component adhesive composition suitable for structural bonding of concrete/concrete, steel/concrete, or steel/steel, as well as for structural strengthening and reinforcing applications with fiber reinforced polymers, is disclosed. The composition includes a resin component A with a peroxide containing at least one norbornene group and at least one methacrylate containing compound and a hardener component B comprising a peroxide and at least one thiol. The resin component A and the hardener component B are spatially separated from one another to inhibit any reaction before mixing of the components.

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: Disclosed is a selected type of copolymer composition comprising copolymers having units derived from ethylene and dicyclopentadiene (DCPD) co-monomers. Such copolymer compositions: a) have a DCPD-derived comonomer unit content of from about 25 mole % to about 45 mole %; b) have a Weight Average Molecular Weight, Mw, of greater than about 170,000; c) comprise amorphous material and have glass transition temperatures, Tg, of from about 8° C. to about 129° C., which also fit the equation Tg (in ° C.)?[(mole % DCPD×3.142)?4.67]; and d) comprise no significant amount of crystalline polyethylene homopolymer or crystallizable polyethylene segments within the ethylene-dicyclopentadiene copolymers. Such copolymers can be readily derivatized by hydrogenation and/or epoxidation to provide polymeric materials suitable for use as engineering thermoplastics.

Abstract: The present invention relates to a liquid ?-olefin vinyl acetate compound containing a liquid ?-olefin vinyl acetate copolymer. Compositions according to the present invention have improved resistance to premature vulcanization as well as good physical properties and aging resistance. The present invention is also directed to a vulcanized compound containing a liquid ethylene vinyl acetate copolymer.