Abstract: The present invention provided a norbornene compound with cross-linkable groups and their derivative polymers, wherein said cross-linkable groups were olefin or epoxy groups. Norbornene polymers with cross-linkable side chain and their block copolymers as well as modified derivatives were prepared via living ring-open metathesis polymerization method. The resulting polymers with excellent solubility and optic properties had narrow molecular weight distribution, well-controlled molecular weight, small refraction ration and high transparency. They were also suitable for preparing hybrid materials with high thermal stability and chemical resistance.

Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.

Abstract: Polymers of a conjugated diene, an unsaturated nitrile and an ?,?-unsaturated carboxylic acid are selectively hydrogenated to reduce carbon-carbon double bonds, without also reducing carboxyl groups and nitrile groups, using a rhodium-containing compound as catalyst. The hydrogenated polymers are novel and display excellent adhesive properties at both room temperature and high temperature, excellent hot tear strength, and excellent abrasion resistance.

Abstract: A process for hydrogenating unsaturations in polymers, the process comprising contacting at least one polymer having unsaturations with a catalyst comprising at least one Group Ia, Ib, IIb, VIb, VIIb or VIII metal on a support of an alkaline earth metal silicate having a surface area of at least 30 m2/g at a temperature of from 50 to 250° C. and a pressure of from 5 to 150 bar.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: The random, hydrogenated copolymers according to the present invention of unsubstituted conjugated dienes and substituted conjugated dienes, having a glass transition temperature of ??60° C., an enthalpy of fusion of ?100 J/g and a content of residual double bonds in the range from 0 to 80%, are suitable for the production of rubber moldings of all kinds which have good resistance to ageing and high resilience at low temperatures. In particular, various tire components and industrial rubber articles may be mentioned as rubber moldings. The copolymers are also suitable for the rubber modification of brittle thermoplastics.

Abstract: The disclosure is directed to a partially hydrogenated ring-opened polynorbornene and a process for making the same. The ring-opened polynorbornene is low in birefringence, high in wavelength dependency about birefringence and excellent in transparency and heat resistance.

Abstract: A rubber composition comprising as a rubber component a specified styrene-butadiene copolymer (A) and a styrene-isoprene copolymer of a specified hydrogenation ratio (B) wherein a bound styrene content of the copolymer (B) is larger by a given value than a bound styrene content of the copolymer (A) is good in the wear resistance and fracture property and further excellent in the wet-skid resistance and dry gripping property.

Abstract: Use is made, for selectively hydrogenating the olefinic double bonds of block copolymers, at least one block of which comprises olefinic double bonds, using a catalyst based on a metal from Group VIII in a medium comprising an organic solvent for the copolymer and an ionic liquid as solvent for the catalyst, of a water-immiscible ionic liquid, preferably an ionic liquid for which the anion is the hexafluorophosphate anion and the cation is the 1-butyl-3-methylimidazolium (bmim+) or 1-ethyl-3-methylimidazolium (emim+) cation. Applied to poly(styrene)-b-poly(butadiene)-b-poly(methyl methacrylate) block copolymers, the poly(butadiene) block of which predominantly possesses a 1,4-microstructure, this process results in copolymers for which the degree of hydrogenation is at least equal to 50% and which exhibit a melting point of greater than 30 °C.

Abstract: Provided are a high melting point copolymer prepared by heat-polymerizing cyclopentadiene and/or dicyclopentadiene and a vinyl-substituted aromatic compound, wherein a use amount of a solvent in heat polymerization is 0.1 time or more and less than 0.5 time based on the mass of the whole monomers, and the copolymer has a softening point falling in a range of 100 to 135° C., and a hydrogenated copolymer obtained by hydrogenating the above high melting point copolymer. The hydrogenated copolymer of the present invention is suitably used as an adhesion-providing resin having a high softening point for a hot melt adhesive.

Abstract: The invention relates to a process for hydrogen transfer to chemical compounds, wherein hydrogen transfer is carried out in a supercritical or subcritical phase using stabilized and dispersed metal particles. The invention further provides for the use of metal colloids stabilized by organic compounds or embedded in organic compounds as catalysts in a process for hydrogen transfer to chemical compounds in a supercritical or subcritical phase so as to avoid the formation of free-radical intermediates during hydrogen transfer.

Abstract: A composition to be used for the manufacture of mono- or multilayer films for food-wrap applications comprising from 5 to 40 wt % of a styrenic block copolymer, a polyolefin in an amount of at least 40 wt % and optionally a resin which is compatible with the hydrogenated poly(butadiene) blocks of the styrenic block copolymer in an amount of from 0 to 25 % wt, wherein all weight percentages are relative to the weight of the complete composition; a styrenic block copolymer to be used in said composition, and mono- or multi-layer films comprising said composition.

Abstract: A process for hydrogenation of an unsaturated polymer. The conjugated diene polymer in an inert organic solvent is brought into contact with hydrogen in the presence of a hydrogenation catalyst composition to selectively hydrogenate the unsaturated double bonds in the conjugated diene units of the conjugated diene polymer. The hydrogenation catalyst composition includes: (a) a titanium compound; (b) a compound represented by formula (II) or formula (III): wherein L1 is a Group IVA element, L2 is a Group IVA element, R3 is C1–C12 alkyl or C1–C12 cycloalkyl, R4 is C2–C12 alkyl or C3–C12 cycloalkyl, and X1, X2, and X3 can be the same or different and are C1–C12 alkyl, C1–C12 alkoxy, C1–C12 cycloalkoxy, phenyl, or phenoxy; and (c) a trialkylaluminum compound.

Abstract: A polymer nano-string composition is provided. The polymer nano-strings can include a poly(alkenylbenzene) core, and a surface layer comprising poly(conjugated diene). The nano-strings have a mean average diameter of less than about 100 nm and a length of greater than about 1 ?m.

Abstract: This invention provides a method for purification of a vinyl polymer which comprises the atom transfer radical polymerization of a vinyl monomer using a transition metal complex as the polymerization catalyst, said vinyl polymer being brought into contact with an oxidizing agent or a reducing agent.

Abstract: The hydrogenated vinyl-polybutadienes according to the present invention have degrees of hydrogenation of from 20 to 100%, Mooney viscosities in the range of from 10 to 150 Mooney units (ML 1+4/100° C.), glass transition temperatures (Tg) of ??57° C. and enthalpies of fusion (?H) of ?30 J/g and having a microstructure with a) from 0 to 44 wt. % 1,2-vinyl-butadiene units of the formula b) from 20 to 64 wt. % 1,2-butylene units of the formula c) from 0 to 60 wt. % 1,4-butenylene units of the formula CH2—CH?CH—CH2 and d) from 0 to 60 wt. % 1,4-butylene units of the formula CH2—CH2—CH2—CH2 are outstandingly suitable for the production of rubber molded bodies of any kind, especially for the production of industrial rubber articles and of tires and tire components. The rubber molded bodies produced from the hydrogenated vinyl-polybutadienes according to the present invention have good resistance to ageing and good elasticity at low temperatures.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: The disclosure is directed to a partially hydrogenated ring-opened polynorbornene and a process for making the same. The ring-opened polynorbornene is low in birefringence, high in wavelength dependency about birefringence and excellent in transparency and heat resistance.

Abstract: The invention relates to a resin composition for a battery case for secondary battery, comprising: (a) about 100 parts by weight of a polypropylene type resin having a density of propylene polymer portion of about 0.905 g/cm3 or more and an MFR of about 0.1 to 12, composing a matrix phase, (b) about 0.5 to 10 parts by weight of component (b-1) or (b-2), composing a dispersed phase polymer, and (c) a hydrogenated block copolymer obtained by hydrogenating a block copolymer; said hydrogenated block copolymer composing a boundary surface between the component a) and the component (b); wherein (b-1) is a hydrogenated block copolymer having a number average molecular weight of about 100,000 or more, in terms of polystyrene, and (b-2) is a high-density polyethylene having a density of about 0.940 g/cm3 or more.

Abstract: The invention concerns a method for hydrogenation of unsaturated polymers in dispersed medium based on an oxidation-reduction system containing hydrazine, an oxidant such as a peroxide and optionally a carboxylic acid. The hydrogenation rate can reach 100% in certain conditions.

Abstract: The present invention concerns a bituminous composition which comprises a bituminous component (I), a block copolymer (II), comprising at least two terminal blocks of a poly(monovinylaromatic hydrocarbon) and at least one block of a poly(conjugated diene), and optionally a filler (III), wherein (II) is a partially hydrogenated block polymer, comprising butadiene as the conjugated diene, wherein the poly(conjugated diene) block upon partial hydrogenation comprises less than 3 mol % 1,2-dine recurring units (A) and less than 20 mol % preferably less than 3 mol % ethylene recurring units (D), calculated on the total content mol/mol of conjugated diene recurring units.

Abstract: The present invention relates to gels prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be combined with tackifying resins, oils and other components to form the gels of the present invention.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: A stretch matenal consists essentially of a thermoplastic polymer matstial that meets the following couditions: (i) the thermoplastic polymer material contains: (a) 100 parts by weight of a hydrogenated block copolymer having a number average molecular weight of 50,000 to 140,000 and comprising am least two polymer blocks (A) composed mainly of a vinyl aromatic compound and at least one hydrogenated polymer block (B) composed mainly of a conjugated diene compound; (b) 0 to 120 parts by weight of a non-aromatic rubber softening agent; (c) 0 to 80 parts by weight of polyethylene that has an MFR of 15 g/10 min or above when measured at 190° C. wider a load of 2.16 kg; and (d) 0 to 40 parts by weight of polystyrene that has an MFR of 5 g/10 min or above when measured at 200° C. under a load of 5.00 kg.

Abstract: Hydrogenated copolymers of an unsaturated nitrile, butadiene and isoprene, wherein the molar ratio of butadiene to isoprene is less than 3:1, display valuable low temperature properties.

Abstract: The present invention relates to ruthenium complex compound wherein a heteroatom-containing carbene compound having a six-membered ring structure is bonded to ruthenium and a process for the preparation thereof; a process for producing ring-opened cyclic olefin polymer by subjecting a cyclic olefin to ring-opening metathesis polymerization in the presence of such a ruthenium complex compound; and a process for producing hydrogenated product of ring-opened cyclic olefin polymers by hydrogenating the carbon-carbon double bonds of the above ring-opened polymers. The invention gives hydrogenated product of ring-opened cyclic olefin polymers having physical properties different from those of hydrogenated product of ring-opened polymers of the prior art. Particularly, the use of dicyclopentadiene can give a hydrogenated product of ring-opened cyclic olefin polymer excellent in heat resistance, and this product can be advantageously used as parts or formed products for medical appliances or electrical components.

Abstract: A hydrogenated ring-opening metathesis polymer containing at least structural units of the general formula [3] and/or the general formula [4] and the weight-average molecular weight Mw to the number-average molecular weight Mn (Mw/Mn) is more than 2.0 and less than 5.0: wherein R8 to R11 and R13 to R16 represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, X2s and X3s are the same or different and represent —O— or —CR122— wherein R12 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, one of Y1 and Y2 represents —(C?O)— and the other of Y1 and Y2 represents —CR182— wherein R18 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and m and n represent an integer of 0 or 1 to 3.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: The present invention relates to mixtures comprising linear block copolymers made from vinylaromatic monomers and from dienes of the structure (I) S1-B1-S2 and (II) S3-B2-S4, where S1 is a block made from vinylaromatic monomers with number-average molar mass Mn in the range from 40,000 to 100,000 g/mol, each of S2, S3 and S4 is a block made from vinylaromatic monomers with number-average molar mass Mn in the range from 5,000 to 20,000 g/mol, each of B1 and B2 is a block made from dienes or a copolymer block made from dienes and from vinylaromatic monomers with numberaverage molar mass Mn in the range from 15,000 to 40,000 g/mol, and the ratio of the block copolymers (I)/(II) is in the range from 0.6 to 2.

Abstract: Disclosed herein are a ring-opened cycloolefin copolymer excellent in optical properties such as transparency, low in water (moisture) absorption property, high in affinity for other materials, good in post processing properties such as adhesive property and printability, and excellent in heat resistance and mechanical strength, a production process thereof, and an optical material. The ring-opened cycloolefin copolymer of the invention contains a structural unit (A) represented by any one of general formulae (1-1) to (1-3) and a structural unit (B) derived from a specific cycloolefin having an ester group in a proportion of 10:90 to 50:50 in terms of a molar ratio, wherein a monomer for obtaining the structural unit (A) is a tricyclomonoolefin compound containing an endo form in a proportion of at least 80 mol % and has a glass transition temperature of 120 to 250° C.

Abstract: The present invention provides a vinyl chloride polymer composition which comprises (i) a vinyl chloride polymer (a) and (ii) a block copolymer (b) having a polymer block (I) comprising of a block copolymer, which may be hydrogenated, of an aromatic vinyl compound polymer block and a conjugated diene polymer block, and a polymer block (II) of a polyurethane, in a specific weight ratio. The vinyl chloride polymer composition of the present invention has non-tackiness, excellent handling properties, favorable flexibility and mechanical properties, and favorable melt-adhesiveness to other materials, and shows no migration of the component serving as a plasticizer. The vinyl chloride polymer composition of the present invention can be applied for various uses such as a production of various molded articles and a production of a laminated structure with other materials.

Abstract: A norbornene ring-opened polymer which in the molecule has repeating units represented by the formula (1): wherein R1 represents Q, R2 represents Q or C(?O)R5, R3 represents Q or C(?O)R6, and R4 represents Q or X—C(?O)R7 (wherein Q represents hydrogen, a C1-10 hydrocarbon group, etc.; R5, R6 and R7 each represents hydroxyl, C1-10 alkoxyl, etc., provided that R6 and R7 may be bonded to each other to constitute oxygen, NH, etc.; X represents methylene, etc., provided that when R2 is Q, then R3 is C(?O)R6 and R4 is X—C(?O)R7 and that when R4 is Q, then R2 is C(?O)R5, R3 is C(?O)R6, and the configuration of R2 and R3 is trans, and m is 0 or 1), the polymer having a weight-average molecular weight as determined by gel permeation chromatography of 1,000 to 1,000,000. Also provided is a hydrogenation product of the norbornene ring-opened polymer. The norbornene ring-opened polymer and the hydrogenation product are excellent in heat resistance, electrical properties, etc.

Abstract: The present invention provides a process for the hydrogenation of a polymer under supercritical conditions. A reaction mixture of hydrogen, at least one polymer, at least one hydrogenation catalyst, and appropriate solvent(s) for the at least one polymer and catalyst is provided and is pressurized and heated to meet or exceed a determined critical pressure and determined critical temperature for the reaction mixture. The hydrogenation occurs under these supercritical conditions, thereby overcoming the hydrogen solubility and mass transfer problems typically encountered in hydrogenation methods at subcritical conditions, wherein hydrogen must be pressurized into solvent to reach the polymer.

Abstract: A cyclic olefin addition copolymer obtained by copolymerizing a cyclic olefin compound having a side chain substituent group with a ring structure, such as endo-tricyclo[4.3.0.12,5]deca-3,7-diene or endo-tricyclo[4.3.0.12,5]deca-3-ene, with another cyclic olefin compound such as bicyclo[2.2.1]hept-2-ene, and further with a cyclic olefin compound having a hydrolysable silyl group as needed, or hydrogenating after copolymerization; a composition for crosslinking in which a specific crosslinking agent is incorporated; a crosslinked product obtained by crosslinking the composition; an optical material containing the copolymer, the composition or the crosslinked product; and a method for producing the copolymer in which addition polymerization is conducted using a specific nickel catalyst.

Abstract: The present invention relates to a photopolymerizable composition, which comprises: (a) a block copolymer component comprising an unhydrogenated styrene diene block copolymer and a hydrogenated controlled distribution styrene diene block copolymer (b) one or more photopolymerizable ethylenically unsaturated low molecular weight compounds, (c) one or more polymerization initiators, and optionally (d) from 0 to 40% by weight, based on the total photopolymerizable compositions, of one or more auxiliaries. The invention also includes flexographic printing plates derived from said photopolymerizable compositions, and flexographic printing relief forms prepared from said plates.

Abstract: A pressure sensitive adhesive composition comprised of: a) 75 to 99.9 weight percent of a tackified thermoplastic polymer component comprising 1) 1–99 weight percent of a thermoplastic polymer substantially without epoxy-binding or ester functions, and 2) 1–99 weight percent of a tackifier; and b) 0.1 to 25 weight percent of an epoxy component comprising a cured epoxy and non-woven webs made of this adhesive composition.

Abstract: A ring-opened metathesis copolymer and its hydrogenated product having a desired monomer unit ratio and a high molecular weight and having hydroxyl groups or hydroxycarbonyl groups can be obtained by conducting a ring-opening metathesis copolymerization of a norbornene-type monomer having hydroxyl groups or hydroxycarbonyl groups with an unsubstituted norbornene-type monomer having at least three rings in the presence of a catalyst predominantly comprised of an organic ruthenium compound having coordinated therewith a neutral electron-donating ligand, and, if desired, hydrogenating the resulting copolymer. The thus-obtained ring-opened metathesis copolymer and its hydrogenation product are characterized by having a low water absorption, good adhesion to metal and other materials, good compatibility with a curing agent and other compounds, and high heat resistance, and exhibiting reduced signal retardation and signal noise.

Abstract: A block copolymer comprising a polymer block [A] and a polymer block [B]. The polymer block [A] contains mainly a repeating unit having an alicyclic structure, and the polymer block [B] contains the repeating unit having an alicyclic structure and a repeating unit derived from a diene based monomer and/or a vinyl based monomer. In any block, the carbon-carbon unsaturated bonds are hydrogenated. The block copolymer is molded into optical disks, optical waveguides, films, sheets, containers, and optical lenses.

Abstract: This invention relates to a process for selectively hydrogenating the unsaturated double bonds of conjugated diene units of a homopolymer or copolymer. By using a highly active novel homogeneous organo titanium catalyst represented by formula (I) and lithium hydride (LiH) prepared in solution of organo lithium compound and hydrogen as a reducing agent, a polymer could be hydrogenated with significantly high yield and good reproducibility. In addition, this invention is characterized by a novel method in that when a copolymer containing a conjugated diene and vinyl-substituted aromatic hydrocarbon, the unsatured double bonds of conjugated diene units are selectively hydrogenated.

Abstract: The present invention relates to a process for the hydrogenation of an unsaturated polymer comprising hydrogenation of an unsaturated polymer in a reaction mixture comprising hydrazine, an oxidizing agent and a catalyst and the reduction or elimination of residual free hydrazine from the hydrogenated polymer, whereby the residual free hydrazine is reduced or eliminated from the reaction mixture by contacting it with an adsorbent and/or absorbent which is a solid material which has the ability to absorb and/or absorb hydrazine. The absorbent and/or absorbent is chosen from activated carbon, carbon black, silicates, chalk, talcum or transition metal containing solids.

Abstract: The invention relates to core-hydrogenated block copolymers composed of vinyl aromatic monomers and dienes having at least two blocks S, which are of different molecular weights and ate comprised of vinyl aromatic monomers. The invention also relates to mixtures containing core-hydrogenated polysterene and to methods for the production thereof.

Abstract: A process for producing a hydrogenated product of a polymer prepared through ring-opening polymerization which comprises a polymerization step of polymerizing a cyclic olefin through ring-opening polymerization in the presence of a polymerization catalyst comprising an organoruthenium compound or an organoosmium compound to prepare a polymer, and a hydrogenation step of adding a hydrogenation catalyst and hydrogen into a polymerization system resulting from the polymerization step to hydrogenate the carbon-carbon double bonds of the polymer prepared through the ring-opening polymerization. When the organoruthenium compound- or organoosmium compound-containing catalyst further comprises a carbene compound, the catalyst exhibits a higher activity for the ring-opening polymerization.

Abstract: The present invention relates to a pressure-sensitive adhesive composition for a surface-protective film, the composition comprising 40% by weight or more of a hydrogenated random copolymer consisting of 1 to 50% by weight of styrene and 99 to 50% by weight of a diene hydrocarbon and 60% by weight or less of a tackifier resin and/or a softener, and when the pressure-sensitive adhesive composition of the present invention is applied to the surface-protective film, the composition is caused to exhibit excellent adhesion to adherends, not to leave stains of the adherends, nor to leaves traces thereon when the films are removed from the adherends, and can also impart excellent removability to surface-protective films.

Abstract: The present invention discloses methods to remove impurities in polymeric materials in order to improve the opto-electronic characteristics of devices fabricated from these polymers. The polymers include but not limited to polyarylenes, polyarylenevinylenes, polyaryleneethylnylene, polyfluorenes, polyanilines, polythiophenes, polypyrroles, and any conjugated co-polymers. The methods involve the selection of a scavenger or chelating agent and use it to remove metallic impurities from the polymers. The methods involve dissolving the polymer in a suitable solvent, adding a scavenger, mixing to form a scavenger, containing phase, and finally separating the scavenger containing phase from the polymer phase. According to this invention, it is preferable for the selected scavengers to have functional groups which can chemically react with metallic species and form a coordination compound that is not soluble in a selected solvent.

Abstract: Anionic polymerization initiators useful in the preparation of polymers having a protected amine functional group. The amine functionality includes a first protecting group, which can be aralkyl, methyl, allyl or tertiary alkyl group. The other of the amine protecting groups can be the same as the first protecting group. Alternatively, the second protecting group can be different from the first protecting group, in which case it is selected to have differential stability to agents used to remove the aralkyl, methyl, allyl or tertiary alkyl protecting group.

Abstract: Inclusion of a branched alcohol in the catalytic hydrogenation reaction involving an aliphatic nitro compound dramatically increases the efficiency of the conversion of nitro groups into amino groups. This discovery is of particular value in the production of polyalkyleneamines via nitration of a polyalkene, such as a polybutene, and its subsequent reduction. The polyalkyleneamines so produced are useful as dispersant additives for motor oils and fuels.

Abstract: A process for hydrogenation of a conjugated diene polymer. The conjugated diene polymer in an inert organic solvent is brought into contact with hydrogen in the presence of a hydrogenation catalyst composition to selectively hydrogenate the unsaturated double bonds in the conjugated diene units of the conjugated diene polymer. The hydrogenation catalyst composition includes: (I) a titanium compound; (II) a compound represented by formula (II): wherein L is a Group IVB element, R is C1-C12 alkyl or C1-C12 cycloalkyl, X can be the same or different and is C1-C12 alkyl, C1-C12 alkoxy, C1-C12 cycloalkoxy, halogen, or carbonyl; and (III) a trialkylaluminum compound.

Abstract: A polymer nano-string composition is provided. The polymer nano-strings can include a poly(alkenylbenzene) core, and a surface layer comprising poly(conjugated diene). The nano-strings have a mean average diameter of less than about 100 nm and a length of greater than about 1 ?m.

Abstract: An object of the present invention is to provide an agent serving both as a compatibilizer and an impact strength-imparting agent, which is freed from layer separation phenomenon and capable of improving compatibility to a polyphenylene ether and/or a polyolefin without detriment to weld tensile strength and low temperature impact strength. Another object is to provide a resin composition, which is obtained by blending the agent serving both as a compatibilizer and an impact strength-imparting agent with other thermoplastic resin, and which is superior in its impact resistance, particularly impact strength at low temperature, heat resistance and processability.