Abstract:
A polyarylene sulfide resin composition including a polyarylene sulfide (A) and an alkaline earth metal organic carboxylate (B) in an amount of 0.001 to 10 mol % based on the formula —(Ar—S)—, a repeating unit of polyarylene sulfide, wherein the polyarylene sulfide (A) has a weight average molecular weight of 10,000 or more and a weight reduction during heating that satisfies the equation ΔWr=(W1-W2)/W1×100≦0.18 (%), wherein ΔWr is a weight reduction ratio (%) determined by a thermogravimetric analysis performed in a non-oxidizing atmosphere under normal pressure at a temperature rise rate of 20° C./min from 50° C. to any temperature equal to or higher than 330° C., wherein W1 is a sample weight at 100° C., and W2 is a sample weight at 330° C.
Abstract:
A block comprised of a copolymer is obtained by ring-opening polymerization of a cyclic polyarylene sulfide, so that a block copolymer is produced to have a maximum peak molecular weight measured by size exclusion chromatography (SEC) in a range of not less than 2,000 and less than 2,000,000 and have a unimodal molecular weight distribution in this range.
Abstract:
The purpose of the present invention is to provide a polyether nitrile film which has excellent processability and high heat resistance, and which exhibits excellent stretchability before being stretched, while having high crystallinity after being stretched. In order to achieve the above-described purpose, a polyether nitrile film according to the present invention has the following configuration. The present invention provides a polyether nitrile film which is a molded film formed from a polyether nitrile that contains N repeating units represented by formula (I) and M repeating units represented by formula (II), with N and M being integers that satisfy the relational expression 0.80≤(N/(N+M))
Abstract:
The present invention is a method of producing ε-caprolactam through adipamide as an intermediate, and characteristically includes a lactamization step of reacting adipamide, formed from a material compound, with hydrogen and ammonia in the presence of a catalyst containing: a metal oxide mainly containing an oxide(s) of one or more metallic elements selected from the group consisting of metallic elements of group 5 and groups 7 to 14 in the 4th to 6th periods of the periodic table; and a metal and/or a metal compound having a hydrogenation ability. The method can increase the selectivity of ε-caprolactam.
Abstract:
A method for selective production of ε-caprolactam, wherein a substance inducible from a biomass resource is used as a material; the reaction process is short; ammonium sulfate is not produced as a by-product; and production of by-products is suppressed; is disclosed. The method for producing ε-caprolactam comprises the step of reacting a particular compound inducible from a biomass resource, such as α-hydromuconic acid, 3-hydroxyadipic acid, or 3-hydroxyadipic acid-3,6-lactone, or a salt thereof with hydrogen or ammonia.