Abstract: An anti-fouling coating is provided, containing a continuous matrix comprising a first component; a plurality of inclusions comprising a second component, wherein the first component is a low-surface-energy polymer having a surface energy, and the second component is a hygroscopic material containing one or more ionic species. The low-surface-energy polymer and the hygroscopic material are chemically connected ionically or covalently, such as in a segmented copolymer composition comprising fluoropolymer soft segments and ionic species contained within the soft segments. The continuous matrix and the inclusions form a lubricating surface layer in the presence of humidity. Coefficient-of-friction experimental data is presented for various sample coatings. The incorporation of ionic species into the polymer chain backbone increases the hygroscopic behavior of the overall structure.

Abstract: A production method comprising: (a) a step of melt-mixing a base resin containing a chlorinated polyethylene; an organic peroxide, an inorganic filler, and a silane coupling agent, in specific ratios, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; (b) a step of mixing the silane master batch obtained in the step (a) with a silanol condensation catalyst, and then forming the resultant mixture; and conducting at least one of the melt-mixing in the step (a) and the mixing in the step (b) is performed in the coexistence of a chloroprene rubber or a polyvinyl chloride; a heat-resistant chlorine-containing crosslinked resin formed body produced by the method, a silane master batch, a mixture and formed body thereof, and a heat-resistant product.

Abstract: Embodiments are directed to a catalyst system comprising metal ligand complexes and processes for polyolefin polymerization using the metal ligand complex having the following structure: where X is selected from the group consisting of —ORX or NRX2.

Abstract: Disclosed are methods for the production of polymers, including random copolymers (RCPs), in single reactor gas or slurry phase polymerization processes, and polymer compositions produced therefrom. The methods enable polymers having low melting temperatures to be made in gas and slurry phase polymerization processes, where they conventionally could not be made in these processes due to stickiness and fouling problems in the reactor.

Abstract: A method for manufacturing a semiconductor device by processing a substrate, the method includes forming a first film of a polymer having urea bonds by supplying a polymerization raw material to a surface of the substrate, subsequently, forming a pattern by etching the first film, and subsequently, forming a second film of a material different from the polymer of the first film by performing a substitution processing to the first film by supplying a reaction gas, which reacts with the polymerization raw material to generate a product, to the substrate while heating the substrate to depolymerize the polymer.

Abstract: To provide novel ultrahigh molecular weight polyethylene particles having a high melting point and exhibiting high crystallinity, thus capable of providing a molded product excellent in mechanical strength, thermal resistance and abrasion resistance. Ultrahigh molecular weight polyethylene particles which satisfy that (1) the intrinsic viscosity (?) is at least 15 dL/g and at most 60 dL/g, (2) the bulk density is at least 130 kg/m3 and at most 700 kg/m3, and (3) ?Tm (?Tm=Tm1?Tm2) i.e. the difference between a melting point (Tm1) in 1st scan and a melting point (Tm2) in 2nd scan, measured by a differential scanning calorimeter (DSC), is at least 11° C. and at most 30° C.

Abstract: The present invention discloses a polyvinyl chloride modifier, composition and a preparation method thereof. The composition comprises the following components by parts by weight: (a) polyvinyl chloride resin of 100 parts, and (b) a toughening modifier of 2-16 parts, the toughening modifier being rubber powder whose an elongation at break is greater than 2201% and which contains weight percentage of chlorine of 5-45 wt %. The elongation at break of the polyvinyl chloride composition of the present invention is greatly improved, and the defect of low elongations at break of polyvinyl chloride product is substantially solved accordingly, therefore, the application scope of polyvinyl chloride surely will be greatly widened.

Abstract: The present invention discloses a polyvinyl chloride mixture and a preparation method thereof. The mixture comprises the following components in parts be weight: (a) polyvinyl chloride resin of 100 parts and (b) a toughening modifier of 2-20 parts, the toughening modifier being rubber powder whose elongation at break is 1601%-2200% and which contains the percentage of chlorine of 5-45 wt %. The elongation at break of the polyvinyl chloride mixture of the present inventions is greatly improved, and the defect of low elongation at break of the polyvinyl chloride product is substantially solved accordingly; therefore, the application scope of polyvinyl chloride surely will be greatly widened.

Abstract: The invention relates to propylene polymer compositions comprising 50-70 wt % of a propylene homo- or copolymer, 5-20 wt % of a first elastomeric ethylene-propylene copolymer, 5-25 wt % of a second elastomeric ethylene-propylene copolymer and 5-30 wt % of an ethylene polymer. The propylene polymer compositions are suitable for molding and they have low haze and a good impact strength/stiffness balance with good impact strengths at low temperatures.

Abstract: A heterogeneous vulcanized polymer blend comprising a continuous phase comprising a thermoplastic polypropylene having a crystallinity of at least 30% and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron. The elastomeric copolymer has a crystallinity of less than 20% and is at least partially cross-linked such that no more than about 80 wt % of the elastomeric copolymer is extractable in cyclohexane at 23° C.

Abstract: This invention relates to a process to functionalize polyolefins comprising contacting a metallocene catalyst with a difunctional diblock hydrosilane, and one or more vinyl terminated polyolefins. This invention further relates to the diblock hydrosilane-functionalized polyolefins produced thereby.

Abstract: The present invention is directed to a method of making a functionalized elastomer, comprising the steps of polymerizing at least one diene monomer and optionally a vinyl aromatic monomer in the presence of an initiator of formula (II) to produce a protected hydroxyl end-terminated polymer where R1, R2, R3 can all be the same or different and are selected from the group consisting of alkyls having from 1 to 8 carbon atoms, cycloalkyls having from 3 to 11 carbon atoms, or aryls having from 6 to 14 carbon atoms, R4 is an alkylene having from 1 to 8 carbon atoms, a cycloalkylene having from 3 to 11 carbon atoms, or an arylene having from 6 to 14 carbon atoms, X is S, O or NH, and Li is lithium; de-protecting the protected hydroxyl end-terminated elastomer to produce a hydroxyl end-functionalized polymer; reacting the hydroxyl end-funtionalized polymer with a maleimido acid chloride to produce a maleimido end-functionalized polymer; and reacting the maleimido end-functionalized polymer with a thiol-terminated

Abstract: A compatibilizer contains a polymer (A) obtained by reacting a modified olefin-based polymer (a-1) with a polymer (a-2) containing a terminal functional group, wherein the modified olefin-based polymer (a-1) is a polymer modified with from 0.01 to 2 mass % of unsaturated carboxylic acid or a derivative thereof, and the polymer (a-2) is a ring opening polymer or condensation polymer containing a terminal functional group, capable of reacting with the modified olefin-based polymer (a-1), at both ends or one end thereof and has a number average molecular weight from 1,500 to 100,000. This provides an excellent compatibilizer. Particularly, upon melt processing a recovery of a multilayer structure including an EVOH layer and a thermoplastic resin layer, a recycling agent is provided that gives sufficient improvement effects to any of the adhesion of a degraded resin to a screw of a molding machine, the generation of die build-up, the generation of fish eyes, and the decrease in transparency.

Abstract: This invention relates to a process for producing propylene-based in-reactor compositions comprising: (a) contacting propylene and from about 0 wt % to 10 wt % C2 and/or C4 to C20 alpha olefins under polymerization conditions in a first stage to form Component A; (b) contacting Component A, ethylene and from about 3 wt % to 30 wt % of one or more C3 to C20 alpha olefin, in the presence of a metallocene catalyst system, under polymerization conditions in a second stage to form Component B; wherein the metallocene catalyst system comprises: (i) a metallocene compound comprising a group 4, 5, or 6 metal, (ii) an activator, and (iii) a support material; and (c) obtaining a propylene-based in-reactor composition comprising Component A and Component B, wherein the propylene-based in-reactor composition has a multimodal melting point. Propylene-based in-reactor compositions and articles comprising these propylene compositions are also disclosed.

Abstract: An object of the present invention is to provide a golf ball resin composition with an excellent resilience and fluidity. Another object of the present invention is to provide a golf ball resin composition with a high hardness and durability. Yet another object of the present invention is to provide a golf ball traveling a great distance with an ionomer cover. The present invention provides a golf ball resin composition comprising, (A) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer composed of an olefin and an ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms; (B) a binary copolymer composed of an olefin and an ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms, and (C) a zinc compound, wherein a content ratio ((A)/(B)) of (A) component to (B) component ranges from 50/50 to 80/20 in a mass ratio and a content of (C) component ranges from 0.

Abstract: The invention provides a golf ball material which is a resin mixture composed of (a) an olefin-unsaturated carboxylic acid copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester copolymer having a weight-average molecular weight (Mw) of from 120,000 to 200,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from 4.3 to 6.6, or a metal neutralization product thereof, (b) an olefin-unsaturated carboxylic acid copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester copolymer having a weight-average molecular weight (Mw) of from 120,000 to 200,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from 6.8 to 9.

Abstract: The invention provides a golf ball material which is a resin mixture composed of (a) an olefin-methacrylic acid copolymer and/or an olefin-methacrylic acid-unsaturated carboxylic acid ester copolymer having a weight-average molecular weight (Mw) of from 120,000 to 200,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from 4.0 to 7.0, or a metal neutralization product thereof, (b) an olefin-acrylic acid copolymer and/or an olefin-acrylic acid-unsaturated carboxylic acid ester copolymer having a weight-average molecular weight (Mw) of from 150,000 to 220,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from 5.5 to 8.5, or a metal neutralization product thereof, (c) an organic acid or a metal salt thereof, and (d) a basic inorganic metal compound for neutralizing at least 70 mol % of acid groups in components (a) to (c), which resin mixture has a Shore D hardness of from 30 to 60.

Abstract: A graft copolymer having a side chain graft-polymerized by atom transfer living radical polymerization (ATRP) on a main chain polymerized by organotellurium-mediated living radical polymerization (TERP), wherein the molecular weight distribution is such that Mw/Mn is 1.5 or less. The graft copolymer is also such that a main chain moiety mainly consisting of the main chain and a side chain moiety mainly consisting of the side chain have microphase-separated structures. The graft copolymer has a narrow molecular weight distribution and forms microphase-separated structures through self organization of hydrophobic and hydrophilic moieties.

Abstract: Novel rubber blends based on partly hydrogenated nitrile rubber and silicone rubber containing vinyl groups are provided, these being produced by a metathesis reaction in the presence of suitable catalysts, as are vulcanizable mixtures and vulcanizates based thereon, and the corresponding production processes.

Abstract: A self curing, two component penetrating densifying sealant and coating composition that imparts protection and reinforcement to porous substrates, such as wood and concrete, as well as non porous substrates, such a metal surfaces, whether or not corroded, and concrete surfaces.

Abstract: Meta-block copolymers and a process for preparing a product mixture comprising meta-block copolymers by contacting a metathesis catalyst under metathesis conditions with a composition comprising two or more ethylenically unsaturated polymers, said unsaturation defining one or more polymer segments in each ethylenically unsaturated polymer, at least one polymer segment in at least one ethylenically unsaturated polymer being chemically distinguishable from at least one polymer segment in at least one other ethylenically unsaturated polymer, characterized in that each meta-block copolymer in the product mixture comprises a random distribution of said chemically distinguishable polymer blocks.

Abstract: Two or more chemically distinguishable ethylenically unsaturated polymers, at least one having from 0.001 to 50 mole percent unsaturation and at least one other having an expected Tg or measured Tm value greater than 100° C. are cross-metathesized to form thermoplastic elastomers having improved performance properties.

Abstract: A method of coating a polymer comprising the step of treating the polymer with an activating agent to produce a reactive polymer, for example treating a polymer bearing at least one X (halogen) group and at least one H with base to eliminate HX. The reactive polymer is then reacted with a reactive coating, for example PVP, preferably in the presence of an initiator like persulfate anions, to produce a coated polymer, which may be hydrophilic in nature.

Abstract: The present invention relates to a heterophasic polypropylene resin comprising a crystalline propylene homopolymer matrix (A) and an amorphous propylene copolymer phase (B) dispersed within the matrix having excellent mechanical properties, in particular at low temperatures, and at the same time high flowability. Further, the invention relates to a production process of the heterophasic polypropylene resin, the use of such a resin in a polypropylene composition and to articles made of the heterophasic polypropylene resin.

Abstract: The invention provides a golf ball material which is a resin mixture composed of (a) an olefin-unsaturated carboxylic acid copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester copolymer having a weight-average molecular weight (Mw) of from 40,000 to 80,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from 5.0 to 8.0, or a metal neutralization product thereof, (b) an olefin-unsaturated carboxylic acid copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester copolymer having a weight-average molecular weight (Mw) of from 120,000 to 200,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from 6.0 to 9.

Abstract: There is provided an adhesive composition comprising (i) at least one film forming polymer, (ii) at least one crosslinker selected from the group consisting of polynitroso compounds, polynitroso precursors, and mixtures thereof, and (iii) at least one oxidizer, wherein the molar ratio of oxidizer to crosslinker is from 0.3 to 2.0. Also provided is a method of bonding substrates together using such a composition, and an article made using such a method.

Abstract: The invention relates to novel propylene polymers with improved properties especially with improved stiffness and impact strength comprising propylene homopolymers or propylene block copolymers with 90.0 to 99.9 wt % propylene and 0.1 to 10 wt % ?-olefins with 2 or 4 to 18 carbon atoms, or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are ?-nucleated propylene polymers, whereby the ?-nucleated propylene homopolymers have an Ir??0.98 and the values for tensile modulus and Charpy impact strength as specified herein. The ?-nucleated propylene block copolymers are polymers having an IR? of the propylene homopolymer block of ?0.98 and the values for tensile modulus and Charpy impact strength as also specified herein. The propylene polymers with an improved property spectrum are suitable for producing molded parts in a pipe system, such as pipes and fittings, inspection chambers, pipe ducting systems, extrusion or compression molded sheets and the like.

Abstract: Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 and/or C4-C12 ?-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.

Abstract: A thermoplastic elastomer composition which has excellent cleanability and is suitable for use as a medical rubber supply. It is characterized by comprising a rubber ingredient dynamically crosslinked with a crosslinking agent and a matrix which comprises a thermoplastic resin and in which the crosslinked rubber ingredient has been dispersed, the crosslinking agent comprising a triazine derivative.

Abstract: Disclosed are golf balls having soft, resilient bimodal ionomeric covers with improved softness and scuff resistance and methods for their preparation. The soft, resilient bimodal ionomeric covers comprise at least partially neutralized mixtures of carboxylate functionalized terpolymers (molecular weight between about 80,000 and 500,000) with carboxylate functionalized ethylene low copolymers (molecular weight between about 2,000 and 30,000).

Abstract: The invention provides a golf ball in which an intermediate layer formed of a highly neutralized resin mixture obtained by using two nonionic resins of differing weight-average molecular weights and breadths of molecular weight distribution (weight-average molecular weight/number-average molecular weight) as the base resin and adding thereto an organic acid or a metal salt thereof and a basic inorganic metal compound capable of being neutralized is combined with a cover formed of an ionic resin having a weight-average molecular weight in a specific range and a breadth of molecular weight distribution (weight-average molecular weight/number-average molecular weight) in a specific range. The golf ball material of the invention has an excellent rebound and durability.

Abstract: Compositions comprising a polymer resin comprising at least one copolymer with hydrolysable groups, an amino acid or diearboxylic acid water-generating organic compound, and a catalyst that comprises a metal atom and at least two ligands taken from the set alkyloxy and earhcxylate are used to form articles that moisture-cure through in-situ generation of water via ring-closing dehydration reactions.

Abstract: This invention relates to a process to functionalize polyolefins comprising contacting a metallocene catalyst with a difunctional diblock hydrosilane, and one or more vinyl terminated polyolefins. This invention further relates to the diblock hydrosilane-functionalized polyolefins produced thereby.

Abstract: This invention relates to a composition comprising a multiblock polyolefin represented by the formula: PO—C(R11)(R12)—C(R13)?C(R14)—C(R15)(R16)—PO*, or isomers thereof, wherein R11, R12, R13, R14, R15, and R16, are each independently a substituted or unsubstituted C1 through C4 hydrocarbyl group or a hydrogen; PO and PO* are polyolefins; PO and PO* are each independently a substituted or unsubstituted hydrocarbyl group having 9 to 4000 carbon atoms, provided that at least one of PO and PO* are C20 or greater, said polyolefin having: 1) an internal unsaturation as shown by the 13C NMR peak at between about 128 and about 132 ppm; 2) an Mn ratio “Z”=0.1 to 10 where Z is the Mn (as determined by 13C NMR) divided by Mn (as determined according to Gel Permeation Chromotography using polystyrene standards); and 3) optionally, from 0.3(J) and 0.

Abstract: A novel polyethylene composition is described. The composition is suitable for manufacturing especially stretched bands or tapes, also coined raffia in the art.

Abstract: This invention relates to a process to make a multimodal polyolefin composition comprising: (i) contacting at least one first olefin monomer with a mixed catalyst system, under polymerization conditions, to produce at least a first polyolefin component having a Mw of 5,000 g/mol to 600,000 g/mol, wherein the mixed catalyst system comprises: (a) at least one polymerization catalyst comprising a Group 4 or Group 5 transition metal; (b) at least one organochromium polymerization catalyst; (c) an activator; and (d) a support material; (ii) thereafter, contacting the first polyolefin component/mixed catalyst system combination with a molecular switch; (iii) contacting the first polyolefin component/mixed catalyst system combination with at least one second olefin monomer, which may be the same or different, under polymerization conditions; and (iv) obtaining a multimodal polyolefin composition.

Abstract: The invention provides a golf ball material made of a resin composition composed of (a-I) an olefin-acrylic acid copolymer having a weight-average molecular weight (Mw) of from about 150,000 to about 200,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from about 3.0 to about 7.0, or a metal neutralization production thereof; (a-II) an olefin-methacrylic acid-unsaturated carboxylic acid ester copolymer having a weight-average molecular weight (Mw) of from about 120,000 to about 200,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from about 3.0 to about 7.0, or a metal neutralization production thereof; (b) an organic acid or a metal salt thereof; and (c) a basic inorganic metal compound which is capable of neutralizing acid groups in the composition. The golf ball material of the invention enables a highly neutralized ionomer having good flow properties and moldability to be achieved.

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 hydrogel having a floatability where from 40% to 90% of a solution and/or suspension to be thickened are thickened starting from the surface of the liquid and the rest of the solution and/or suspension to be thickened is thickened starting from the bottom of the container, a process for preparing the hydrogel and also its use for absorbing blood and/or body fluids, especially in hygiene articles, or for thickening aqueous solutions and/or suspensions, especially for thickening medical wastes.

Abstract: A golf ball material composed of (A) an olefin-containing thermoplastic polymer having an acid content of at least 0.5 wt % but less than 5.0 wt %, (B) a resin composition which includes one or more selected from the group consisting of diene polymers, thermoplastic polymers and thermoset polymers, and (C) an oxygen-containing inorganic metal compound has a good thermal stability, flow and processability, making it suitable for injection molding. The golf ball material is ideal for the production of high-performance golf balls endowed with durability, scuff resistance and optimal hardness without a loss of rebound in the molded article.

Abstract: Curable perfluoroelastomer compounds are prepared by mixing a composition comprising perfluoroelastomer, 1-20 phr fibrillating PTFE, and curative for a time ML (ASTM D5289), measured on sequential samples of compound taken at 5 minute intervals, differ by less than 5%. Articles are made therefrom by curing the compounds to form crosslinks.

Abstract: A cross-metathesized product mixture is prepared by contacting a metathesis catalyst under metathesis conditions with a composition comprising two or more chemically distinguishable ethylenically unsaturated polymers, at least one of said ethylenically unsaturated polymers (first polymer) having from 0.001 to 50 mole percent unsaturation and at least one other of said ethylenically unsaturated polymers (second polymer) being an amorphous polymer having a Tg less than 0° C. and having from 0.001 to 5 mole percent unsaturation.

Abstract: Provided is a single layer adhesive that provides the appropriate balance of adhesion and clean release required for a wafer dicing function and also provides the necessary bond required in a subsequent die attach step. The adhesive composition comprises an acrylate ester polymer having a functional group, a multi-functional thermosetting resin, wherein the acrylate ester polymer and the thermosetting resin are capable of reacting with each other, a multi-functional acrylate ester, an acrylate ester polymerization catalyst or curing agent, a thermally-latent catalyst suitable for curing the multi-functional thermosetting resin, and an acrylic acid salt.

Abstract: The invention provides a composition that contains at least one specific non-crosslinkable organic medium at least one microgel and at least one thickening agent, a process for the preparation thereof and uses of the compositions.

Abstract: The present invention generally relates to a catalyst and process for polymerizing an olefin and to a polyolefin prepared by the process.

Abstract: A composition having gas-barrier properties, which can produce a resin film having gas-barrier properties under high humidity conditions and high abrasion resistance, and a coating film formed by thermally treating a film-like product of the composition having gas-barrier properties and a method for producing the same are provided. A composition having gas-barrier properties, comprising a water-soluble polymer having hydroxyl group (A), a water-soluble polymer having carboxyl group (B), a metal alkoxide and/or a hydrolysis condensate thereof (C), and an esterification catalyst (E), such that the weight ratio of the component (A) and the component (B) is 97/3 to 3/97, and the component (C) is contained in an amount ranging from 1 part by weight to 400 parts by weight, while the component (E) is contained in an amount ranging from 0.

Abstract: A cross-metathesized product mixture is prepared by contacting a metathesis catalyst under metathesis conditions with a composition comprising two or more chemically distinguishable ethylenically unsaturated polymers, at least one of said ethylenically unsaturated polymers (first polymer) having from 0.001 to 50 mole percent unsaturation and at least one other of said ethylenically unsaturated polymers (second polymer) being an amorphous polymer having a Tg less than 0° C. and having from 0.001 to 5 mole percent unsaturation.

Abstract: A graft copolymer having a side chain graft-polymerized by atom transfer living radical polymerization (ATRP) on a main chain polymerized by organotellurium-mediated living radical polymerization (TERP), wherein the molecular weight distribution is such that Mw/Mn is 1.5 or less. The graft copolymer is also such that a main chain moiety mainly consisting of the main chain and a side chain moiety mainly consisting of the side chain have microphase-separated structures. The graft copolymer has a narrow molecular weight distribution and forms microphase-separated structures through self organization of hydrophobic and hydrophilic moieties.

Abstract: A water-absorbing agent according to the present invention includes water-absorbent resin particles having an internal cross-linked structure, wherein a vicinity of a surface of the water-absorbent resin particle is cross-linked with a surface cross-linking agent, and the water-absorbent resin particle has therein a sea-island structure having (i) part containing a first water-soluble multivalent metal salt such as aluminum sulfate and (ii) part not containing the first water-soluble multivalent metal salt. With this arrangement, it is possible to provide a water-absorbing agent having less water-soluble component content, more excellent liquid permeability, and more excellent water retention under pressure than the conventional water-absorbing agent.

Abstract: Disclosed is a polyethylene composition having faster crystallization rate and improved environmental stress cracking resistance. The polyethylene composition comprises a multimodal polyethylene and a nucleating agent. The multimodal polyethylene comprises from 25 to 50 wt % of a low molecular weight ethylene homopolymer component, from 25 to 50 wt % of a medium molecular weight ethylene copolymer component and from 25 to 50 wt % of a high molecular weight ethylene copolymer component. The polyethylene composition has an environmental stress cracking resistance (ASTM D1693, Condition B in 100% Igepal) greater than or equal to 40 days and a crystallization half time less than or equal to 70% of the crystallization half time of the multimodal polyethylene without nucleating agent.