摘要:
The objective of the invention is to provide a gas barrier resin composition that is excellent in oxygen absorbability and further excellent in adhesiveness to olefin resins, a structure comprising the same, and a multi-layer structure comprising the same. The oxygen-absorbing gas barrier resin composition disclosed comprises a cyclized product of a conjugated diene polymer and an ethylene/vinyl alcohol copolymer having a specified oxygen permeation rate. The oxygen-absorbing gas barrier resin composition further comprises an α-olefin resin. The oxygen-absorbing gas barrier structure is obtained by molding the subject oxygen-absorbing gas barrier resin composition. The oxygen-absorbing gas barrier multi-layer structure comprises a layer of the subject oxygen-absorbing gas barrier structure and a sealing material layer.
摘要:
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 α,β-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).
摘要:
[Problem] To provide an oxygen absorbent that has excellent oxygen absorbability at room temperature, has a low content of metals and is less odorous after oxygen absorption and an oxygen-absorbing multi-layer body comprising an oxygen absorbent layer comprising this oxygen absorbent.[Means for Dissolution] The oxygen absorbent comprises a cyclized product (A) of a conjugated diene polymer and a cyclized product (B) of a conjugated diene polymer, wherein a rate of reduction of unsaturated bonds (%) of the cyclized product (B) of a conjugated diene polymer is at least 5 points smaller than a rate of reduction of unsaturated bonds (%) of the cyclized product (A) of a conjugated diene polymer. It is preferable that the rate of reduction of unsaturated bonds of the cyclized product (A) of a conjugated diene polymer is 60% or more and that the rate of reduction of unsaturated bonds of the cyclized product (B) of a conjugated diene polymer is less than 60%. The oxygen-absorbing multi-layer body comprises a gas barrier material layer, an oxygen absorbent layer comprising the foregoing oxygen absorbent and a sealing material layer laminated in this order.
摘要:
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 α,β-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).
摘要:
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.
摘要:
[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 μm 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.
摘要:
[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.
摘要:
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 α,β-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.
摘要:
A rubber composition comprising a rubbery polymer and a modified liquid polymer. The modified liquid polymer is obtained by reacting a liquid polymer having at least one carbon-carbon double bond in the molecule with an organic compound having the group --CH.dbd.N-- and an organic acid halide having the group --COX where X is halogen, in the presence of a Friedel-Crafts catalyst.