Abstract: An arylene sulfide sulfone/sulfoxide polymer and a process for preparing same by contacting at least one dihaloaromatic sulfone, at least one dihaloaromatic sulfoxide, at least one organic amide, at least one sulfur-containing compound, and water.

Abstract: A process for preparing a polyarylene sulfide involves contacting a sulfur source with a metallic salt of an aliphatic .omega.-hydroxycarboxylic acid and a dihalogen aromatic compound in an organic polar solvent, thereby carrying out polycondensation with stability in a polymerization system in which a water content is large. the polyarylene sulfide prepared has a high degree of whiteness and with a sufficiently high molecular weight. The use of the metallic salt of .omega.-hydroxycarboxylic acid in a particular range can provide a novel polyarylene sulfide.

Abstract: An arylene sulfide polymer and a process for preparing arylene sulfide polymers by contacting a sulfur source, a cyclic organic amide and a dihaloaromatic compound to form a polymerization mixture, polymerizing the polymerization mixture and recovering the arylene sulfide polymer wherein the process is conducted in the presence of a suitable olefin.

Abstract: In a first embodiment, arylene sulfide resins are provided by contacting, in a polymerization mixture, during a polymerization process, reactants comprising: an alkali metal sulfide, an organic amide, an alkali metal carboxylate, water and a monomer source which comprises at least one dihaloaromatic compound. The amount of alkali metal carboxylate present during the polymerization process ranges from about 0.01 to about 0.03 mole per each mole of sulfur present in the resulting arylene sulfide resin. The total amount of water present during the polymerization process ranges from about 1.02 to about 2.1 moles per each mole of sulfur present in the resulting arylene sulfide resin.

Abstract: Disclosed is a process for the preparation of polyphenylene-sulfide resins, wherein an aromatic polyhalide compound is reacted with an alkali metal sulfide, or hydrogen sulfide and an alkali metal base, or an alkali metal hydrosulfide and an alkali metal base in the presence of an amide polar solvent. A polyphenylene-sulfide resin having a cyclic oligomer content lower than 1.5% by weight, as determined according to the methylene chloride extraction method, is obtained by (a) carrying out the reaction in the absence a polymerization assistant, (b) using the amide polar solvent in an amount not larger than 400 g per mole of the aromatic polyhalide compound, and (c) subjecting the polymerization liquid obtained by the reaction to hot solid-liquid separation at a temperature at least 50.degree. C. but lower than the boiling point of the solvent used, and washing the separated solid with the solvent used for the reaction, which is heated at a temperature at least 50.degree. C.

Abstract: A process for preparing arylene sulfide polymers by dehydrating an aqueous mixure of a sulfur source and a cyclic organic amide to form a dehydrated mixture, contacting the dehydrated mixture with a dihaloaromatic compound to produce a polymerization mixture, polymerizing the polymerization mixture and recovering the arylene sulfide polymer wherein the process is conducted in the presence of a compound selected from the group consisting of unsubstituted aromatic hydrocarbons, alkyl-substituted aromatic hydrocarbons, alkyl ethers, aryl ethers, alkyl-aryl ethers, polyethers and saturated aliphatic hydrocarbons.

Abstract: A process for preparing poly(arylene sulfide sulfone) by contacting a dihaloaromatic sulfone, an organic amide, a sulfur-containing compound, water, and an alkali metal carboxylate, wherein the molar ratio of the alkali metal carboxylate to the sulfur-containing compound is about 0.002:1 to less than 0.05:1.

Abstract: A process for preparing poly(arylene sulfide sulfone) by contacting a dihaloaromatic sulfone, an organic amide, a sulfur-containing compound, water, and an alkali metal carboxylate, wherein the alkali metal carboxylate is prepared in-situ by contacting at least one carboxylic acid with at least one alkali metal hydroxide.

Abstract: A class of amide group-containing aromatic dihalide compounds are sulfidized together with a class of aromatic dihalide compounds to provide a novel class of aromatic sulfideamide polymers increased in crystalline melting point (T.sub.m). The polymers exhibit excellent resistance to high temperatures, resistance to solvents, flame-retardant properties and improved mechanical properties.

Abstract: A process for the production of arylene sulfide polymers is provided which comprises subjecting a mixture of at least one sulfur source, at least one organic monohalo compound, at least one polyhalo-substituted aromatic compound and at least one polar organic compound to polymerization conditions sufficient to produce the arylene sulfide polymer. The organic monohalo compound can be added at any time prior to substantial completion of polymerization to provide arylene sulfide polymers of increased extrusion rate.

Abstract: Aromatic sulfide amide polymers composed of a repeating unit having the formula (I) and a repeating unit having the formula (II) below, having an inherent viscosity ranging from 0.02 to 10 dl/g. ##STR1## wherein, Ar.sup.1, Ar.sup.2, Ar.sup.3 and Ar.sup.4 are same or different aromatic rings and R.sup.1, R.sup.2, R.sup.3 and R.sup.

Abstract: The present invention provides a process for producing carbon dichalcogen polymers having a conductivity of about 10.sup.-8 S/cm without doping treatment which is increased to 10.sup.-4 to 10.sup.-2 S/cm by doping, by polymerizing carbon dichalcogenide monomers (carbon disulfide, carbon diselenide, etc.) in the form of a solution thereof under a low pressure in the presence of an anionic catalyst.

Abstract: A poly(arylene sulfide) coating composition, method of preparing the composition, and method of coating are disclosed. The composition comprises a finely-divided poly(arylene sulfide) having from about 75 to about 99 mole percent para-polymerized aromatic units and from about 1 to about 25 mole percent ortho- or meta- polymerized aromatic units and, optionally, from about 0.1 to about 2 mole percent trifunctionally-polymerization aromatic units. The coating resin can be prepared in a polymerization reaction medium containing a molar excess of base, with respect to sulfur present, and can be washed with water at at least about 100.degree. C. to lower the curing temperature of the coating composition. The compositions are particularly suited for application in which curing temperatures of 350.degree. C. or lower are desired.

Abstract: A metal scavenger is composed of an addition product of a polyamine and an epihalohydrin. The addition product contains as substituent or substituents at least one carbodithio group and/or at least one carbodithioate salt group introduced therein by substituting the corresponding number of active hydrogen atom or atoms in the addition product. Metals can be scavenged from waste water by adding the metal scavenger together with at least one of sodium monosulfide, sodium polysulfides and sodium hydrogensulfide.

Abstract: A metal scavenger is composed of an addition product of a polyamine and an epihalohydrin. The addition product contains as substituent or substituents at least one carbodithio group and/or at least one carbodithioate salt group introduced therein by substituting the corresponding number of active hydrogen atom or atoms in the addition product. Metals can be scavenged from waste water by adding the metal scavenger together with at least one of sodium monosulfide, sodium polysulfides and sodium hydrogensulfide.

Abstract: A method for producing a polymer in which lithium hydroxide, optionally also employing either lithium chloride or lithium acetate, is contacted with N-methyl-pyrrolidone in the presence of lithium halide to produce a reaction product mixture containing lithium N-methyl-4-aminobutyrate with this reaction mixture then being contacted with hydrogen sulfide and polyhalo aromatic compound in the presence of additional N-methyl-pyrrolidone under conditions to form a polymer. Lithium halide produced as a by-product is substantially recovered from the reaction mixture, converted to lithium hydroxide and can be recycled to the process.

Abstract: A method for producing arylene sulfide polymer in which a reaction mixture containing at least one polyhalo-substituted aromatic compound, at least one organic amide, at least one alkali metal carboxylate, H.sub.2 S and water in an amount up to 5 weight percent of the total of the reaction mixture components is contacted at polymerization conditions for a time sufficient to produce polymer. In a preferred embodiment, at least one alkali metal carboxylate is present in the reaction mixture.

Abstract: A method for producing arylene sulfide polymer in which an anhydrous reaction mixture containing at least one polyhalo-substituted aromatic compound, at least one organic amide, at least one alkali metal hydroxide, and H.sub.2 S is maintained at polymerization conditions for a time sufficient to produce polymer. In a preferred embodiment the reaction mixture contains at least one alkali metal salt derived from a monocarboxylic acid or carbonic acid.

Abstract: Alkali metal aminoalkanoate is prepared by contacting in the presence of an alkali metal carboxylate a reaction mixture in which there is at least one alkali metal hydroxide, at least one lactam, and water. Arylene sulfide polymer is prepared by contacting at polymerization conditions a reaction mixture that contains at least one alkali metal aminoalkanoate prepared as described above; at least one polyhalo-substituted aromatic compound; at least one organic amide as solvent and H.sub.2 S. In an embodiment of the polymerization the organic amide used as solvent can be the same as the lactam from which the alkali metal aminoalkanoate was produced.

Abstract: In the abatement of a waste disposal problem in the manufacture of vinyl chloride wherein 1,2 dichloroethane is an intermediate and a heavy residue is recovered as still bottoms, from the purification by distillation of dichloroethane and/or vinyl chloride having an organic-origin chloride content ranging between 55 and 80% by weight, wherein said heavy residue is reacted at 50.degree. to 100.degree. C., in aqueous medium with an alkali metal or an alkaline earth metal polysulfide, the proportion of polysulfide being equal at least to 30% by weight of the molar theoretical quantity, the average sulfur rank of polysulfide being more than 1 and up to and including 5, the pH of the reaction medium not exceeding 10.

Abstract: Amine silicate compounds are formed by the chemical reaction of hydrated silica with an amine compound in the presence of a suitable alkali catalyst at a suitably elevated temperature, and then by reacting the resultant compounds with aldehydes, epoxys, organic dicarboxylic anhydrides, polycarboxylic acid compounds or carbon disulfide, thereby forming a resinous condensation product.