Abstract: [Problem] To provide an oxygen-absorbing multilayer sheet which exhibits high oxygen-absorbability without the addition of a transition metal salt and which does not cause a problem of odors, a packaging material comprising the multilayer sheet, and a packaging container obtained by molding this packaging material. [Means for Dissolution] An oxygen-absorbing multilayer sheet having a thickness of 250 ?m or more that comprises a gas barrier material layer, an oxygen absorbent layer and a sealing material layer laminated in this order, wherein an oxygen absorbent constituting the subject oxygen absorbent layer comprises a cyclized product of a conjugated diene polymer. There are also disclosed a packaging material comprising this multilayer film and a packaging container obtained by molding this packaging material.

Abstract: [Problem]To provide an oxygen-absorbing multilayer film which exhibits excellent oxygen-absorbability without incorporating a transition metal salt usually added as a catalyst for the purpose of enhancing oxygen-absorbability and which is excellent in physical properties after oxygen absorption, a packaging material comprising this multilayer film, and a packaging container obtained by molding this packaging material. [Dissolution Means]An oxygen-absorbing multilayer film that comprises a gas barrier material layer, an oxygen absorbent layer and a sealing material layer laminated in this order, wherein the subject oxygen absorbent layer comprises less than 50% by weight of a cyclized product of a conjugated diene polymer relative to all the constitutional components of the oxygen absorbent layer. There are also disclosed a packaging material comprising this multilayer film and a packaging container obtained by molding this packaging material.

Abstract: A main object of the invention is to provide a polar-group-containing cyclized rubber making it possible to improve remarkable the adhesiveness between paint and a molded product made of a nonpolar polymer such as polypropylene or polyethylene, and a process for producing the same. In order to attain the object, the invention provides a polar-group-containing cyclized rubber which has a polar group at a terminal of a polymer chain thereof, has a weight-average molecular weight of 1000 to 1,000,000, and is obtained by cyclizing a conjugated diene polymer having the polar group at a terminal of a polymer chain thereof.

Abstract: A shaped composite article comprising a substrate and an adherend, which are comprised of different materials and are bonded together through a layer of an adhesive composition comprising as the main ingredient (i) a cyclic structure-containing conjugated diene polymer having a degree of cyclization of 30-95%, or (ii) a modified cyclic structure-containing conjugated diene polymer having a degree of cyclization of 30-95%, and having added thereto 0.1-20 wt. % of an ?,?-ethylenically unsaturated carboxylic acid anhydride, wherein the ratio of {amount of (I)/[amount of (I)+amount of (II)]} is at least 60 wt. %, where (I) is an acid anhydride group added and (II) is a dicarboxylic acid group formed by hydrolysis of an acid anhydride group (I).

Abstract: The present invention provides an oxygen absorber which exhibits a high oxygen-absorbing ability even if a transition metal salt as a catalyst for making oxygen-absorbing ability high is not added thereto and further keeps a high mechanical strength even after the absorber absorbs oxygen. An oxygen absorber containing a cyclized conjugated diene polymer as an active ingredient. About the cyclized conjugated diene polymer, the percent decrease in unsaturated-bond amount is preferably 10% or more and the weight-average molecular weight preferably ranges 1,000 to 1,000,000. The oxygen absorber may further contain a thermoplastic resin. The content of an antioxidant in the oxygen absorber is preferably 500 ppm or lower. The oxygen absorber is in a film, sheet or powder.

Abstract: The present invention has a main object to provide a modifier for hydrocarbon polymer that improves a coatability of a surface of a hydrocarbon polymer molding. To attain the object, the present invention provides a modifier for hydrocarbon polymer which contains, as an active component, a modified cyclic structure-containing conjugated diene polymer wherein an amount of an ?,?-ethylenically unsaturated carboxylic acid compound bonded by addition is from 0.1 to 20% by weight and a cyclization ratio is from 30 to 95%; and provides a hydrocarbon polymer composition comprising the modifier for hydrocarbon polymer and a hydrocarbon polymer; and provides a molding by molding the hydrocarbon polymer composition.

Abstract: An object of the invention is to provide a laminate which is good in adhesiveness between a substrate and a thin film laminated thereon by a dry film-forming method such as a chemical vapor growth method or a vacuum evaporation method even if the substrate is a polymer substrate made of a nonpolar polymer; and a process for producing the same. In order to attain the above-mentioned object, the invention provides a laminate comprising a polymer substrate, a primer layer comprising a cyclized rubber which is a conjugated diene polymer cyclized product or a derivative thereof, the layer being formed on the surface of the polymer substrate, and a thin film laminated on the surface of the primer layer by a dry film-forming method; and a process for producing the same.

Abstract: A main object of the invention is to provide a polar-group-containing cyclized rubber making it possible to improve remarkably the adhesiveness between paint and a molded product made of a nonpolar polymer such as polypropylene or polyethylene, and a process for producing the same. In order to attain the object, the invention provides a polar-group-containing cyclized rubber which has a polar group at a terminal of a polymer chain thereof, has a weight-average molecular weight of 1,000 to 1,000,000, and is obtained by cyclizing a conjugated diene polymer having the polar group at a terminal of a polymer chain thereof.

Abstract: A modified polymer having a hydroxyl value of 1 to 100 mgKOH/g, which is obtained by addition reaction of a compound (b) having one or more hydroxyl groups and a polymerizable unsaturated bond to a cyclized product (a) of a conjugated diene polymer having a cyclization degree of 30 to 95%. A coating material comprising this modified polymer is suitable as a primer imparting enhanced adhesion, or a coating liquid or an ink exhibiting enhanced adhesion, to various shaped articles, especially an olefin resin shaped article.

Abstract: The present invention has a main object to provide a modifier for hydrocarbon polymer that improves a coatability of a surface of a hydrocarbon polymer molding. To attain the object, the present invention provides a modifier for hydrocarbon polymer which contains, as an active component, a modified cyclic structure-containing conjugated diene polymer wherein an amount of an ?,?-ethylenically unsaturated carboxylic acid compound bonded by addition is from 0.1 to 20% by weight and a cyclization ratio is from 30 to 95%; and provides a hydrocarbon polymer composition comprising the modifier for hydrocarbon polymer and a hydrocarbon polymer; and provides a molding by molding the hydrocarbon polymer composition.

Abstract: The present invention are a rubber composition comprising 100 parts by weight of a conjugated diene rubber and 5 to 100 parts by weight of a cyclized conjugated diene polymer having a degree of cyclization of 25 to 90% and a weight-average molecular weight/number-average molecular weight (Mw/Mn) ratio of 2 or below as determined by gel permeation chromatography in terms of polystyrene; a vulcanizable rubber composition comprising the rubber composition and a vulcanizing agent; and a damping rubber vulcanizate obtained by vulcanizing the vulcanizable rubber composition. The present invention provides a damping rubber vulcanizate which has satisfactory rubber strength and exhibits excellent damping properties over a wide temperature range from low temperature to high temperature; and a rubber composition and a vulcanizable rubber composition which are favorably usable in the production of the vulcanizate.

Abstract: The present invention provides organic particles preferable for production of powder paint or the like which provides coating excellent in water resistance and both adhesion and glossiness, and powder paint using the organic particles. Specifically, the present invention provides: organic particles having mean particle diameter in a range of 1 to 200 ?m and containing no less than 20% by weight of a conjugated diene polymer cyclized product, the conjugated diene polymer cyclized product being obtained as a result of an internal cyclization reaction of a conjugated diene polymer; and powder paint including the organic particles, which organic particles further containing a coloring agent.

Abstract: A shaped composite article comprising a substrate and an adherend, which are comprised of different materials and are bonded together through a layer of an adhesive composition comprising as the main ingredient (i) a cyclic structure-containing conjugated diene polymer having a degree of cyclization of 30-95%, or (ii) a modified cyclic structure-containing conjugated diene polymer having a degree of cyclization of 30-95%, and having added thereto 0.1-20 wt. % of an ?,?-ethylenically unsaturated carboxylic acid anhydride, wherein the ratio of {amount of (I)/[amount of (I)+amount of (II)]} is at least 60 wt. %, where (I) is an acid anhydride group added and (II) is a dicarboxylic acid group formed by hydrolysis of an acid anhydride group (I).

Abstract: A polyester having a weight average molecular weight of 10,000 to 200,000, a hydroxyl value of 30 to 200 mgKOH/g, an acid value of not larger than 5 mgKOH/g and a glass transition temperature of 35 to 60° C., which is obtained by polycondencing a polycarboxylic acid ingredient comprising as a principal ingredient a polycarboxylic acid compound selected from alicyclic polycarboxylic acids and anhydrides thereof, which have a carboxyl group at each of adjacent two carbon atoms, with a polyhydric alcohol ingredient comprising as principal ingredients an alkylene glycol having 2 or 3 carbon atoms and a tetrahydric or higher-hydric alcohol. By incorporating a modifier for polymer, comprising this polyester as an effective ingredient, in a polymer, a polymer composition is obtained which gives a shaped article exhibiting improved adhesion to a thermosetting resin.

Abstract: An unsaturated polyester (i) having a weight-average molecular weight (Mw) of 1,000-100,000 and at least two carbon-carbon unsaturated bonds in the molecule thereof obtained by esterifying an unsaturated carboxylic acid (b) with a polyester-polyol (a) obtained by subjecting a polybasic carboxylic acid containing polymerized fatty acid and/or polymerize fatty acid ester to polycondensation with a polyhydric alcohol; and an unsaturated (poly)urethane having Mw of 1,000-100,000 and at least two carbon-carbon unsaturated bonds in molecule obtained by reacting said polyester-polyol (a), polyisocyanate (d) and compound (e) having active hydrogen and polymerizable carbon-carbon unsaturated bond. Said unsaturated polyester and unsaturated (poly)urethane exhibit excellent adhesive property, heat resistance, water resistance and flexibility after being cured.

Abstract: A polyester having a hydroxyl value of at least 30 mg KOH/g and a weight average molecular weight (Mw) of preferably from 1,000 to 500,000 and prepared by polycondensation of a polycarboxylic acid ingredient predominantly comprised of an aromatic dicarboxylic acid and a polyhydric alcohol ingredient predominantly comprised of a hindered alcohol. This polyester is suitable for modifying a resinous or rubbery polymer.

Abstract: An oil-soluble polyester having a weight average molecular weight of 10,000 to 1 000,000, which is a polycondensate prepared by polycondensing the following ingredients (A), (B) and (C):(A) a divalent higher carboxylic acid ingredient,(B) a divalent alcohol ingredient comprising a glycol represented by the following formula:HO--CH.sub.2 --CR.sup.1 R.sup.2 --CH.sub.2 --OHwherein R.sup.1 and R.sup.2 represent a alkyl group, and the sum of carbon numbers in R.sup.1 and R.sup.2 is at least three, and(C) 0.1 to 15% by mole, based on the total of ingredients (A) and (B), of at least one multi-valent ingredient selected from a carboxylic acid with a valency of at least three and an alcohol with a valency of at least three. This oil-soluble polyester is useful as an additive for a lubricating oil.

Abstract: An oil-soluble polyester having a weight average molecular weight of 10,000 to 1,000,000, which is a polycondensate prepared by polycondensing the following ingredients (A) and (B): (A) a dicarboxylic acid ingredient, and (B) a diol ingredient comprising (i) a hindered glycol represented by the following formula: HO--CH.sub.2 --CR.sup.1 R.sup.2 --CH.sub.2 --OH wherein R.sup.1 and R.sup.2 independently represent a linear or branched alkyl group, and (ii) an alkylene glycol having at least 4 carbon atoms in the main chain. This oil-soluble polyester is useful as an additive for a lubricating oil.

Abstract: A sludge dispersing agent for fuel oils includes a polymer having at least one >C.dbd.N.sup.+ < bond in its molecule and at least one compound selected from the group consisting of long-chain alkyl phosphates and alkyl sulfosuccinates and salts thereof.

Abstract: An additive for improving the dispersibility of a particulate substance in an organic medium, a thermoplastic polymer, or a thermosetting resin, is at least one compound having a ##STR1## bond in the molecule, including, for example, compounds having an oxazolinium ion in the molecule. The preferred additive compounds are oligomeric or polymeric.