Abstract: A polyolefin-polydiorganosiloxane block copolymer may be prepared by hydrosilylation reaction.

Abstract: Methods of preparing a crosslinked polymer provide increased chemical durability resulting from the inclusion of antioxidants, or free-radical scavengers, to neutralize the radicals causing polymer membrane degradation. One method includes polymerizing, using an initiator with light irradiation or heat, a styrenated crosslinkable monomer with a styrene-based comonomer having the formula CH2?CH—C6H4—X and a free-radical scavenger. Examples of free-radical scavengers include 4-hydroxy styrene and 4-vinylaniline.

Abstract: It is an object of the invention to provide a chloroprene rubber-based polymer latex that has a good balance between initial adhesion and storage stability and is suitable for one-component aqueous adhesive applications. The invention relates to a chloroprene rubber-based polymer latex composition containing a mixture of a chloroprene rubber-based polymer latex and a latex of an acrylic or styrene-acrylic resin-based polymer obtained by copolymerization of a specific carboxyl group-containing unsaturated monomer, in which the specific carboxyl group is neutralized with an alkali.

Abstract: The invention provides an adhesive composition for conduction between electrical elements, comprising 25 to 46 parts by weight of nitrile-butadiene rubber with Mooney viscosity ranged from 50 to 75 (ML 1+4@100)° C., 25 to 45 parts by weight of acrylic oligomer, 16 to 32 parts by weight of thermoplastic resin, two organic peroxides having different one-minute half-life temperatures from each other, and a coupling agent. The thermoplastic resin is selected from the group consisting of phenoxy resin, poly(methyl)methacrylate copolymer, polystyrene copolymer and Novolak resin.

Abstract: A method comprising contacting at least one metal salt of an organic acid with at least one aromatic compound in a reaction zone under conditions suitable for the formation of a polymer, wherein the metal salt of an organic acid comprises a metal and at least one unsaturated organic acid moiety. A composition comprising polystyrene and a metal salt of cinnamic acid. An article made from a composition comprising polystyrene and a metal salt of cinnamic acid. A composition comprising polystyrene and a salt of a fatty acid. An article made from a composition comprising polystyrene and a salt of a fatty acid.

Abstract: The present invention relates to an ethylene-based terpolymer having high elasticity and a preparation method thereof, and more particularly, to a highly elastic, ethylene-based terpolymer, which comprises a specific molar ratio of a ethylene unit, a C6-12 ?-olefin unit and at least one functional unit selected from the group consisting of divinylbenzene and para-methylstyrene and to a method of preparing the highly elastic, ethylene-based terpolymer using a metallocene catalyst.

Abstract: A process for constructing multi-arm star macromolecules with uniform properties, high molecular weight and narrow molecular weight distribution using free radical polymerization is described.

Abstract: There are provided a radical polymerizable composition having a low viscosity suitable for coating and a cured product and a plastic lens each obtained by curing the composition, the cured product having a high refractive index, good adhesiveness to a plastic film substrate, and good adhesiveness kept even under high-temperature and high-humidity conditions. The radical polymerizable composition includes phenylbenzyl (meth)acrylate (A), an epoxy (meth)acrylate (X) having an aromatic ring in its molecular structure, and a radical polymerization initiator (Y) as essential components.

Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer. A telechelic polymer may result from use of the metallated aminosilane compound as a functional terminator.

Abstract: The present invention relates to a polysiloxane compound having a structure represented by formula 1: wherein each of F1, F2, F3 and F4 is individually selected from one of a first group, a second group, a third group and a fourth group, the first group is selected from a C2˜C10 hydrocarbon group having amino group(s), a C2˜C10 hydrocarbon group having epoxy group(s), a C2˜C10 hydrocarbon group having carbonyl group(s) or a C2˜C10 hydrocarbon group having alkoxy group(s), the second group is a C2˜C10 hydrocarbon group having amino group(s), the third group is selected from a C2˜C10 hydrocarbon group having epoxy group(s), a C2˜C10 hydrocarbon group having carbonyl group(s), a C2˜C10 hydrocarbon group having SiCl group(s) or a C2˜C10 hydrocarbon group having alkoxy group(s), the fourth group is selected from a C2˜C10 hydrocarbon group having aryl group(s) or a C2˜C10 hydrocarbon group having alkoxy group(s).

Abstract: A phase difference film obtained by stretching a resin film formed of a resin composition containing a copolymer having a first structural unit represented by the following formula (1) and a second structural unit represented by the following formula (2), in at least a uniaxial direction, in which the content of the first structural unit in the above-described copolymer is 3 to 50 mol % on the basis of the total of the first structural unit and the second structural unit.

Abstract: The present invention relates to a novel polymeric composition comprising a novel polymer having two or more repeat units and a terminus having the structure (1): wherein R1 represents a C1-C20 substituted or unsubstituted alkyl group, w is a number from 1-8, X is oxygen (O) or nitrogen (N), and Rd is a reactive group. The invention also relates to a process for forming a pattern using the novel polymeric composition. The invention further relates to a process of making the novel polymer.

Abstract: A method for making a polystyrene ionomer comprises: preparing a metallic comonomer within styrene monomer to form a reaction mixture; and placing the reaction mixture under conditions suitable for the formation of a polymer composition. The metallic comonomer can be a metal acrylate, formed by contacting a metal complex and an acrylate precursor.

Abstract: A procedure for improved temperature control in controlled radical polymerization processes is disclosed. The procedure is directed at controlling the concentration of the persistent radical in ATRP and NMP polymerizations procedures and the concentration of radicals in a RAFT polymerization process by feeding a reducing agent or radical precursor continuously or intermittently to the reaction medium through one of more ports.

Abstract: Styrenic (meth)acrylic oligomers that are prepared at lower temperature than conventional solid grade oligomers, or are hydrogenated, contain fewer terminal vinylic unsaturations, when compared to such conventional styrenic (meth)acrylic oligomers prepared by the customary high temperature processes. Styrenic (meth)acrylic oligomers that contain fewer terminal vinylic unsaturations demonstrate improved thermal stability and may provide improved resistance to UV weathering compared to the conventional and non-hydrogenated styrenic (meth)acrylic oligomers.

Abstract: The present invention provides a thermoplastic acrylic resin comprising (i) a repeating unit derived from a methacrylate monomer, (ii) a repeating unit derived from a vinyl aromatic monomer, (iii) a repeating unit derived from an aromatic group-containing methacrylate monomer, and (iv) a cyclic acid anhydride repeating unit, and a molding for optical material comprising the same.

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 class of bioinspired, cross linking polymers, created by working catechol functionalities into the backbone of a bulk polymer, is disclosed. Varied cross linking groups may be incorporated into different polymer backbones, and subsequently reacted with an array of reagents. An adhesive composition comprising a copolymer, the copolymer comprising pendant dihydroxyphenyl groups; and a crosslinking agent selected from the group consisting of, for example, oxidants, enzymes, metals, and light. A method of preparing an adhesive composition comprising copolymerizing a first monomer comprising pendant dihydroxy-protected dihydroxyphenyl groups; deprotecting the dihydroxy-protected dihydroxyphenyl groups; crosslinking the dihydroxyphenyl groups with a crosslinking agent.

Abstract: A method for manufacturing a polymer includes the steps of: (1) deciding an upper limit of a budget; (2) deciding an amount of a non-fossil resource-derived monomer and an amount of a fossil resource-derived monomer such that utility is optimized in a range where a cost does not exceed the upper limit, by using a function that includes a total monomer amount and a utility index of the non-fossil resource-derived monomer as constants and includes the amount of the non-fossil resource-derived monomer and the amount of the fossil resource-derived monomer as variables; and (3) polymerizing the non-fossil resource-derived monomer and the fossil resource-derived monomer.

Abstract: To provide a novel cross copolymer and resin composition which are improved in heat resistance and compatibility over conventional ethylene/aromatic vinyl compound copolymers and which have low crystallinity, are excellent in softness, transparency and compatibility and show mechanical properties similar to soft vinyl chloride resins, as compared with conventional cross copolymers.

Abstract: A macromolecule includes at least one polymer chain and terminal functionality. The terminal functionality includes a ring-opened radical of a cyclosilazane or cyclic hydrosiloxane. The polymer can include unsaturated mer units and can be provided via anionic polymerization techniques. The macromolecule can be used as a component of a composition that also includes particulate fillers, with the composition being useful for the production of vulcanizates.

Abstract: A functionalized polymer terminated by using an isocyanato alkoxysilane terminating agent. A method of preparing a functionalized polymer comprising the step of contacting a living polymer with an isocyanato alkoxysilane terminating agent.

Abstract: The present invention relates to styrene-butadiene copolymers (SBR) that are prepared using aqueous emulsion polymerization technology and are intended for the adhesive and sealing industry, being particularly useful in the preparation of contact adhesives and pressure-sensitive adhesives (PSA) and widely applicable in the footwear and furniture industries. The use of this kind of elastomer in processes for preparing adhesives, having an aqueous or solvent base, provides high cohesion to adhesive compositions without compromising or jeopardizing the adhesion. The present invention is also intended to protect the process for obtaining SBR copolymers, simultaneously comprising: aqueous emulsion polymerization at high temperatures, the use of a specific surfactant and the maintenance of the Mooney viscosity and the combined styrene content in the copolymer in high ranges.

Abstract: The present invention provides a novel catalyst composition comprising a metallocene complex, and a novel producing method for various polymer compounds. Preferably, the invention provides a novel polymer compound, and a producing method thereof. Specifically, the invention provides a polymerization catalyst composition, comprising: (1) a metallocene complex represented by the general formula (I), including: a central metal M which is a group III metal atom or a lanthanoid metal atom; a ligand Cp* bound to the central metal and including a substituted or unsubstituted cyclopentadienyl derivative; monoanionic ligands Q1 and Q2; and w neutral Lewis base L; and (2) an ionic compound composed of a non-ligand anion and a cation: where w represents an integer of 0 to 3.

Abstract: Aqueous slurries of finely divided fillers which are at least partly covered by anionic latices, the slurries being obtainable by treating aqueous slurries of finely divided fillers with at least one anionic latex with a glass transition temperature of ?5 to ?50° C., preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock.

Abstract: A paper coating or binding formulation comprises an aqueous polymer dispersion comprising a copolymer obtained by polymerization of an unsaturated monomer and a carbohydrate derived compound and a tetrasulfonate-based fluorescent whitening agent. The carbohydrate derived compound can be selected from the group consisting of dextrins, maltodextrins, and mixtures thereof. Methods of preparing a paper coating or binding formulation and improving the whitening properties of paper are also provided. Furthermore, paper including a copolymer obtained by polymerization of an unsaturated monomer and a carbohydrate derived compound and a tetrasulfonate-based fluorescent whitening agent is also disclosed.

Abstract: The present invention relates to a monolithic organic copolymer prepared by copolymerization of at least one monomer of the group consisting of styrene, (C1-C3)alkylstyrene, (meth)acrylic acid and esters thereof with a crosslinker in the presence of a macroporogen and a microporogen, wherein a) the sum of said at least one monomer of the group and the crosslinker is 10-20%, preferably 10-15%, by volume of the reaction mixture, with the rest being essentially macroporogen and microporogen, and the degree of said copolymerization is at least 70%, preferably at least 90%, more preferably at least 99%, or b) the sum of said at least one monomer of the group and the crosslinker is 30-50%, preferably 35-45%, by volume of the reaction mixture, with the rest being essentially macroporogen and microporogen, and the degree of said copolymerization is in the range of 25-60%, preferably 35-50%.

Abstract: A process for the preparation of a fluoroolefin polymer from an azeotropic mixture of monomers having a constant composition, the process including the step of: contacting in a reaction zone: (i) an initiator; and (ii) an azeotropic mixture of monomers including at least one fluoroolefin and, optionally, at least one ethylenically unsaturated comonomer capable of copolymerizing therewith; wherein the contacting is carried out at a temperature, pressure and length of time sufficient to produce the fluoroolefin polymer.

Abstract: Polyolefin based sealing element compositions with good oxygen barrier properties particularly suitable for forming sealing elements, for example gaskets and cap liners that are especially useful for sealing containers having products such as liquids or food-stuffs therein. The compositions when formed as sealing elements do not appreciably contribute taste and/or odor to a packaged product including the sealing element. The compositions have desirable rheological properties and are thus readily processable at various temperatures.

Abstract: Elastomeric polymers and compounded elastomers having reduced amounts of leachables and improved resistance to ?-irradiation sterilization suitable for pharmaceutical stopper and seal applications. These polymers and compounded elastomers maintain their physical performances upon being exposed to ?-irradiation over time and typical use conditions. The polymer is prepared by reacting a mixture of i) a C4 to C7 isoolefin monomer, ii) a styrene based monomer, and optionally iii) a C4 to C14 multiolefin monomer wherein the polymer contains 5 to 15 wt % of styrene derived units.

Abstract: Provided herein are methods for the preparation of telechelic polyolefins via polymerization reaction with a terpene initiator.

Abstract: Disclosed are a maleimide-a-alkylstyrene-based, heat-resistant bulk tetrapolymer and a preparation process thereof. More specifically, disclosed are a bulk tetrapolymer, comprising 5-60 wt % of an N-substituted maleimide monomer, 10-70 wt % of an a-alkylstyrene monomer, 5-50 wt % of an unsaturated nitrile monomer and 3-50 wt % of an aromatic vinyl monomer, as well as a continuous bulk polymerization process for preparing the same. The disclosed bulk tetrapolymer has a weight-average molecular weight (Mw) of 70,000-300,000 and a glass transition temperature of 150-200 DEG C., shows excellent high-temperature thermal stability and heat resistance and a remarkably low melt viscosity, and thus is excellent not only in processability, but also in productivity, processability, moldability and blendability, when it is blended with other resins. Also, the continuous bulk polymerization process is equipped with a devolatilizer and enables the bulk tetrapolymer to be produced at low cost and high efficiency.

Abstract: Polymers useful as catalysts in non-enzymatic saccharification processes are provided. Provided are also methods for hydrolyzing cellulosic materials into monosaccharides and/or oligosaccharides using these polymeric acid catalysts.

Abstract: An aqueous slurry of finely divided fillers which are at least partly coated with anionic latices, wherein the slurry is obtainable by treating an aqueous slurry of finely divided fillers with an aqueous dispersion comprising at least one anionic latex and at least one degraded starch, preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock.

Abstract: The present invention relates to such a copolymer comprising an olefin and an aromatic vinyl compound that has a syndiotactic structure, high block property and a wide molecular weight distribution. Specifically, it relates to a copolymer comprising an olefin and an aromatic vinyl compound, in which a content of the aromatic vinyl compound is from 1 to 99% by mol; a molecular distribution is 1.

Abstract: A polyol composition comprising a polyol (a) and resin fine particles (b) dispersed in the polyol (a), and a method for producing the polyol composition are provided, wherein the resin fine particles (b) are particles such that an arithmetic standard deviation by volume of a particle size distribution of the particles, derived from respective values in 85 divisions of a range of 0.020 to 2000 ?m determined by a laser diffraction/scattering particle size distribution analyzer, is not more than 0.6. A resin fine particle-dispersed polyol composition that, even if the resin particles dispersed in the polyol have a small particle diameter, allows the production of a polyurethane resin having an excellent mechanical strength such as elongation at break, and a method for producing the same, are provided.

Abstract: A polymer and a treating agent (such as a surface-treating agent) are provided that have excellent characteristics in such properties as water repellency, oil repellency, antifouling property and charge controlling property. The polymer contains a structural unit derived from fluorosilsesquioxane having an addition polymerizable group, or contains a structural unit derived from fluorosilsesquioxane having an addition polymerizable group and a structural unit derived from organopolysiloxane having an addition polymerizable group. The treating agent contains the polymer. An article treated with the treating agent is also provided.

Abstract: Lighting elements composed of thermoplastic molding compositions comprising A) from 10 to 99.9% by weight of at least one thermoplastic polyester, B) from 0.1 to 50% by weight of at least one terpolymer, obtainable from b1) at least one vinylaromatic monomer, b2) at least one C1-C4-alkyl (meth)acrylate or (meth)acrylonitrile, and b3) from 0.1 to 10% by weight, based on the total weight of the components b1) to b3), of at least one monomer which comprises an ?,?-unsaturated anhydride, and C) from 0 to 60% by weight of other additives, where the total of the percentages by weight of components A) to C) is 100%.

Abstract: There is provided a method for producing copolymer that is composed of ethylene and alpha-olefin by a solution polymerization, and more specifically, a method for producing copolymer that is composed of ethylene and aromatic monomer as main components by using a transition metal catalyst including a cyclopentadiene derivative, and one or more anionic ligand having aryloxy group in which an aryl derivative is substituted at an ortho-position

Abstract: The present invention relates to an ethylene-based terpolymer having high elasticity and a preparation method thereof, and more particularly, to a highly elastic, ethylene-based terpolymer, which comprises a specific molar ratio of a ethylene unit, a C6-12 ?-olefin unit and at least one functional unit selected from the group consisting of divinylbenzene and para-methylstyrene and to a method of preparing the highly elastic, ethylene-based terpolymer using a metallocene catalyst.

Abstract: An end-modified soluble polyfunctional vinyl aromatic copolymer, which is improved in heat resistance, thermal stability, solvent solubility, and compatibility with acrylate compounds, and a curable resin composition using the same are disclosed. The end-modified soluble polyfunctional vinyl aromatic copolymer is obtained by allowing a divinyl aromatic compound (a), a monovinyl aromatic compound (b), and an aromatic ether compound (c) to react with each other, and has, at an end, an end group derived from the aromatic ether compound and having an acrylate bond. The copolymer has a number average molecular weight Mn of 500 to 100,000, an introduction amount (c1) of the end group derived from the aromatic ether compound satisfies (c1)?1.0 (group/molecule), a molar fraction a? of a structural unit derived from the divinyl aromatic compound and a molar fraction b? of a structural unit derived from the monovinyl aromatic compound in the copolymer satisfy 0.05?a?/(a?+b?)?0.95.

Abstract: The embodiments of the invention relate to a multifunctional lithiated amine-containing compound comprising at least two molecules of lithiated amine in a molecule of the compound. In one embodiment, the compound has a formula where x is an integer of 1 or more, Q is (a) an element selected from the group consisting of O, S, N, P and Si or (b) an alkylene group having from 1 to 20 methylene groups, and R1 and R2 are the same or different and are selected from the group consisting of alkyls, cycloalkyls and aralkyls containing from 1 to 20 carbon atoms. In another embodiment, the compound comprises cyclic lithio amines and has a formula: where x is 1 or more, R3, R4 and R5 are the same or different and represent alkylene groups containing from 3 to 20 carbon atoms.

Abstract: A halogenated non-polymeric phenyl ether flame retardant is described having the general formula (I): wherein each X is independently Cl or Br, n is an integer of 1 or 2, and each p is independently an integer of 1 to 4, provided that, when each X is Cl, the total amount halogen in the ether is from about 50 to about 65 wt % and when each X is Br, the total amount halogen in the ether is from at least 70 wt % to about 79 wt % and wherein from about 30% to about 80%, for example from about 35% to about 75% of the halogenated ethers are fully halogenated the remainder being partially halogenated. The present flame retardant provides superior mechanical properties when incorporated into a polymer than similar flame retardants which contain a higher amount of fully halogenated species.

Abstract: Improved binder technology for use with fibrous materials is provided whereby the adjoining fibers of a fibrous material are bound in the absence of a phenol-formaldehyde reaction product. A curable binder composition is provided which comprises a water-soluble Michael adduct crosslinking agent having reactive hydroxyl end groups and a polycarboxylic acid capable of undergoing an esterification reaction. The binding composition is coated on a fibrous material and is heated to achieve crosslinking of hydroxyl end groups of the Michael adduct and carboxylic acid groups of the polycarboxylic acid via an esterification reaction to form a cured water-resistant binder in association with the fibrous material wherein adjoining fibers are bound at cross-over points.

Abstract: A flame retardant blend comprises at least first and second halogenated non-polymeric phenyl ethers having the general formula (I): wherein each X is independently Cl or Br, each m is independently an integer of 1 to 5, each p is independently an integer of 1 to 4, n is an integer of 1 to 5 and wherein the values of n for the first and second ethers are different.

Abstract: The present invention relates to a transparent resin composition which comprises (a) a (meth)acrylate based unit comprising one or more (meth)acrylate based derivatives; (b) an aromatic based unit having a chain having the hydroxy group containing portion and an aromatic moiety and (c) a styrene-based unit comprising one or more styrene-based derivatives, and an optical film that is formed by using the same.

Abstract: The present invention is directed to compositions of a linear polyol and a salt of a crosslinked cation exchange polymer comprising a fluoro group and an acid group. These compositions are useful to bind potassium in the gastrointestinal tract.

Abstract: Provided herein are polyfarnesenes such as farnesene homopolymers derived from a farnesene and farnesene interpolymers derived from a farnesene and at least a vinyl monomer; and the processes of making and using the polyfarnesenes. The farnesene homopolymer can be prepared by polymerizing the farnesene in the presence of a catalyst such as a Ziegler-Natta catalyst, a Kaminsky catalyst, a metallocene catalyst, an organolithium reagent or a combination thereof. In some embodiments, the farnesene is prepared from a sugar by using a microorganism.

Abstract: Provided herein are polyfarnesenes such as farnesene homopolymers derived from a farnesene and farnesene interpolymers derived from a farnesene and at least a vinyl monomer; and the processes of making and using the polyfarnesenes. The farnesene homopolymer can be prepared by polymerizing the farnesene in the presence of a catalyst. In some embodiments, the farnesene is prepared from a sugar by using a microorganism.

Abstract: A method for the polymerization of free radically polymerizable vinyl monomers involves polymerizing free radically (co)polymerizable vinyl monomers in a batch reaction under essentially adiabatic conditions, and utilizing scavenger monomer to reduce undesirable residual monomer.