Japan Exlan Company Limited

Kuraray Co., Ltd.

Hirotaka Shiota

Ryosuke Nishida

Noriyuki Kohara

Yoshihiro Watanabe

Takahisa Kida

Ryuichi Kasahara

Toshiyuki Kobashi

Makoto Suzuki

Makoto Okamoto

Haruki Umetani

A resin composition comprises: a modified EVOH (A) that is represented by a following formula (I), has contents (mol %) of a, b, and c based on the total monomer units satisfying following formulae (1) through (3), and has a degree of saponification (DS) defined by a following formula (4) of 90 mol % or more; and inorganic oxide particles (B), wherein a content of the inorganic oxide particles (B) is from 5 to 5000 ppm. Such a resin composition is improved in adhesion to a resin other than EVOH, secondary processability, and flexibility without decreasing the performances originally possessed by EVOH, such as gas barrier properties, transparency, flavor retention, solvent resistance, and oil resistance. Accordingly, the resin is preferably used as a molded article, a film, a sheet, a heat shrinkable film, a thermoformed article, a multilayer structure, a coinjection stretch blow molded container, a fuel container, and the like. 18&#x2264;&#x2264;55&#x2003;&#x2003;(1)0.01&#x2264;&#x2264;20&#x2003;&#x2003;(2)[100&#x2212;()]&#xd7;0.9&#x2264;&#x2264;[100&#x2212;()]&#x2003;&#x2003;(3)DS=[(Total Number of Moles of Hydrogen Atoms in, and)/(Total Number of Moles of, and)]&#xd7;100&#x2003;&#x2003;(4).

Resin composition and use of same

Disclosed are a hot-melting acrylonitrile (AN) polymer composition comprising a non-volatile component modified from AN alone or a AN monomer composition through chemical reaction, an AN polymer and water, a method for producing the composition, and a method for producing a shaped article of AN polymer by melting the composition under heat followed by shaping the melt. The composition and the shaped article do not contain toxic AN and AN monomer mixture.

Acrylonitrile polymer compositions, method for producing the

A process for producing a homogeneous phase melt of polyacrylonitrile suitable for extrusion molding and melt spinning, by the steps of preparing polymer/water crumb containing 30-60 wt % of polyacrylonitrile and dewatering the crumb in a molten state with stirring at temperatures above 140.degree. C. and at pressures above autogenous pressure until the concentration of the polymer in the crumb exceeds 70% by weight.

Process for producing homogeneous phase melt of polyacrylonitrile

Saturated or superheated steam, or an inert gas, or a combination thereof is introduced into a gas phase above a molten acrylonitrile polymer in a vessel having a stirrer, while the polymer has a temperature of at least 120.degree. C. and a pressure at least equal to its autogenous pressure. Any unreacted acrylonitrile monomer, or both any such monomer and any acrylonitrile monomer or water used as a plasticizer are removed by evaporation from the vessel.

Process for manufacturing an improved acrylonitrile polymer melt

A stable aqueous emulsion of an acrylonitrile polymer which comprises a dispersion system of said acrylonitrile polymer having a particle size of substantially less than 1.mu. in water and contains substantially no emulsifying agent nor dispersing agent. Said emulsion is produced by a process comprising; polymerizing acrylonitrile alone or in a monomer mixture comprising more than 60% by weight of acrylonitrile and as another component, at least one other ethylenically unsaturated compound, under stirring at a temperature higher than 120.degree. C and at least autogenous pressure, in an aqueous system consisting essentially of water in an amount of 45 to 95% by weight based on the total weight of water and monomer(s), to thereby introduce at least 2.times.10.sup.-5 mol per gram polymer of sulfonic acid groups or salts thereof and/or carboxylic groups or salts thereof into the resulting polymer, whereby an aqueous dispersion system comprising fine droplets of the polymer in substantially molten state is formed, and then cooling said aqueous dispersion system under stirring so that said polymer droplets may not gather together to form aggregates, said cooling of said aqueous dispersion system being to a temperature less than 100.degree. C while maintaining said system at a pressure higher than the autogenous pressure.

Stable aqueous emulsion of acrylonitrile polymer, its production and

Colloidal antimony oxide is continuously produced by passing an aqueous dispersion containing antimony trioxide and hydrogen peroxide through a heated tube-type reactor.

Growing community of inventors

Okayama, Japan

Hirotaka Shiota