Abstract: A method is provided in the production of an arylene sulfide polymer by employing a p-dihalobenzene, optionally together with a minor amount of a polyhalo aromatic compound having more than two halogen substituents per molecule; an alkali metal sulfide; an alkali metal carboxylate; a base selected from alkali metal hydroxides and alkali metal carbonates; and an organic amide using a profile of selected temperature ranges within the range of polymerization reaction temperature for the process which results in a polymer of lower melt flow than that of the polymer produced when one polymerization temperature is used throughout the polymerization stage.

Abstract: High molecular weight aromatic sulfide/sulfone polymers are produced by contacting a dihalo aromatic sulfone, an alkali metal sulfide other than lithium sulfide, a heterocyclic amine, and, optionally, an alkali metal carboxylate. Use of at least one heterocyclic amine with or without an alkali metal carboxylate during the contacting results in polymers of high molecular weight having utility as coatings, films, molded objects, fibers, and the like.

Abstract: Normally solid, moldable polyamides having diamine-derived structural units of the formula ##STR1## wherein each A is individually selected from the group consisting of 5-methylnonamethylene, 2,4-dimethyloctamethylene, 2,4,6-trimethylheptamethylene, and 4-isopropylheptamethylene; first diacid-derived structural units of the formula ##STR2## and second diacid-derived structural units of the formula ##STR3## wherein X is a divalent aliphatic hydrocarbon radical containing from 14 to 46 carbon atoms. Minor amounts of other polyamide-forming materials can be included in the copolyamide to provide up to 30 percent of the nitrogen atoms and up to 30 percent of the carbonyl groups. When used as adhesives, these copolyamides possess very good initial T-peel strength.

Abstract: A method is provided for producing p-phenylene sulfide polymers by contacting a p-dihalobenzene, an alkali metal sulfide, an organic amide, and a lithium salt selected from among lithium carbonate and lithium borates at polymerization conditions. The use of the lithium carbonate or lithium borates in addition to the other compounds contacted to form a composition results in p-phenylene sulfide polymers of higher molecular weight than produced without the lithium compounds, as evidenced by higher viscosity and lower melt flow of the polymer than produced by compared methods.

Abstract: A method is provided for producing p-phenylene sulfide polymers by contacting a p-dihalobenzene, an alkali metal sulfide, an alkali metal carboxylate, an organic amide, and an alkali metal carbonate at polymerization conditions. The use of an alkali metal carbonate in addition to the other compounds contacted to form a composition results in p-phenylene sulfide polymers of higher molecular weight than produced without the alkali metal carbonate, as evidenced by higher inherent viscosity and lower melt flow of the polymer than produced by compared methods.

Abstract: A method is provided for producing p-phenylene sulfide polymers by contacting at least one p-dihalobenzene, at least one alkali metal sulfide, at least one organic amide and at least one alkali metal sulfonate at polymerization conditions. The use of an alkali metal sulfonate in addition to the other compounds contacted to form the reaction mixture results in a p-phenylene sulfide polymer of higher molecular weight than is produced without the alkali metal sulfonate, as evidenced by higher inherent viscosity and lower melt flow of the polymer than produced by the compared methods.

Abstract: A method by which p-phenylene sulfide polymers are produced by admixing p-dihalobenzene, an alkali metal sulfide, an organic amide, a lithium halide, and optionally, a base, at polymerization conditions thereby producing a polymer of higher molecular weight as evidenced by lower melt flow and higher inherent viscosity than is obtained without the addition of the lithium halide.

Abstract: A lightweight, transparent armor shield formed from a transparent, polymeric material formed by the polymerization ofA. at least one compound having the general formula ##STR1## wherein each R is individually selected from the group consisting of --H and --CH.sub.3 ; andB. at least one polycarboxylic acid having from 6 to 26 carbon atoms.

Abstract: P-Phenylene sulfide polymers are produced by reacting a mixture of p-dihalobenzene, at least one organic amide, lithium sulfide and additional alkali metal sulfide chosen from among sodium sulfide, potassium sulfide, rubidium sulfide, cesium sulfide, and mixtures thereof at conditions suitable for producing a polymer. The use of additional alkali metal sulfide along with lithium sulfide produces polymers of higher molecular weight than can be prepared using a single alkali metal sulfide. The higher molecular weight polymer can be molded into films which, upon quenching, are tough, creasible, and opaque as contrasted with the brittle, transparent character of quenched, molded films produced from polymer prepared using a single alkali metal sulfide.

Abstract: High molecular weight aromatic sulfide/sulfone polymers are produced by reacting a dihalo aromatic sulfone, an alkali metal sulfide other than lithium sulfide, an organic amide, and an alkali metal carboxylate. Use of the alkali metal carboxylate results in polymers of high molecular weight and satisfactory melt flow properties having utility as coatings, films, molded objects, fibers, and the like.

Abstract: A sulfur-based aggregate-asphalt composition prepared by a process comprising mixing aggregate with asphalt and a molten sulfur system, wherein the molten sulfur system is made by a method comprising heating a mixture of sulfur and a sulfur plasticizer. Dicyclopentadiene is a preferred material for plasticizing the sulfur. Preferably the sulfur system contains, in addition to the sulfur plasticizer, a fibrous filler such as glass fiber or asbestos, and an inorganic filler such as talc powder.

Abstract: A new polyamide composed at least primarily of terephthalic acid and 5-methyl-1,9-nonanediamine, the polyamide having less than 5 olefinic double bonds per 100 diamine units, an inherent viscosity of at least about 0.6, a polymer melt temperature of at least about 200.degree.C, a T.sub.g in the range of about 100.degree.C to about 120.degree.C, and a T.sub.m in the range of about 247.degree.C to about 265.degree.C can be formed into fibers without the use of plasticizers. Such fibers can be produced with a boiling water shrinkage of less than 30 percent and a zero strength temperature of at least 200.degree.C.

Abstract: Production of arylene sulfide copolymers comprising contacting under reaction conditions (a) a mixture of arylene sulfide polymers with (b) an organic amide and (c) optionally together with a small amount of an alkali metal sulfide. The resulting copolymers can be cured to products having high thermal stability and good chemical resistance. The cured or uncured products are useful in the production of coatings, films, molded objects, fibers, and the like.

Abstract: A method is provided for producing arylene sulfide polymers employing (1) alkali metal salts of halothiophenols, (2) organic amides, and (3) dihalo aromatic compounds.

Abstract: Substantially amorphous, optically clear polyamides are produced from a bis(4-aminocyclohexyl)methane or methyl derivative thereof and a phenylindanedicarboxylic acid or alkyl derivative thereof. Copolyamides having desirable processing properties are produced by polymerizing the above monomers and at least one straight chain dicarboxylic acid as an additional monomer. The resulting polymers are useful as fibers, molding resins, coatings, adhesives, and the like.