Abstract: A high nitrile fiber formed from an acrylonitrile olefinically unsaturated multipolymer which fiber is produced by a waterless, solventless melt spinning process.

Abstract: A melt processable high nitrile multipolymer such as an acrylonitrile olefinically unsaturated, multipolymer, which is stabilized by admixing with maleic acid, derivatives of maleic acid, salts of maleic acid, maleic anhydride, maleamides, salts of maleamides, maleates, salts of maleates, and combinations thereof.

Abstract: A homogeneous, high nitrile melt processable acrylonitrile olefinically unsaturated multipolymer and a process for making the multipolymer, comprising polymerizing a mixture of acrylonitrile monomer and one or more olefinically unsaturated monomers, in which the rate of addition of the multimonomer mixture is set by the rate of polymerization so that the concentration of unreacted acrylonitrile monomers and unreacted olefinically unsaturated monomer(s) is low and the polymerization process is in a monomer starved condition.

Abstract: A process for making a thermally stable melt processable acrylonitrile/methacrylonitrile/olefinically unsaturated multipolymer, comprising polymerizing a mixture of acrylonitrile monomer, methacrylonitrile monomer, and olefinically unsaturated monomer in which the rate of addition of the multimonomer mixture is set by the rate of polymerization so that the concentration of unreacted acrylonitrile monomer, unreacted methacrylonitrile monomer and unreacted olefinically unsaturated monomer is low and the polymerization process is in a monomer starved condition.

Abstract: A process for making acrylonitrile/methacrylonitrile copolymer, comprising polymerizing a mixture of acrylonitrile monomer and methacrylonitrile monomer in which the rate of addition of the comonomers is set by the rate of polymerization so that the concentration of unreacted acrylonitrile monomer and unreacted methacrylonitrile monomer is low and the polymerization process is in a starved condition.

Abstract: Polymers are disclosed which comprise the reaction product of (A) at least about 60 weight percent of at least one .alpha., .beta.-unsaturated polycarboxylic acid or anhydride; and (B) about 0.5 to about 40 weight percent of at least one acrylamide represented by the formula VI:CH.sup.2 .dbd.C(R.sup.5)C(O)N(R.sup.6)R.sup.7 (VI)wherein R.sup.5, R.sup.6 and R.sup.7 are each independently hydrogen or lower alkyl groups provided that at least one of R.sup.6 and R.sup.7 is a lower hydro-carbyl group, and further provided that the mixture is free of a vinyl sulfonic acid. The monomers react at elevated temperatures to form polycarboxylate scale inhibitors having a number average molecular weight of from about 400 to 10,000. The polymers have particular application in the inhibition of scales during oil field operations, but also may be employed in any environment where deposition of mineral scales is undesirable.

Abstract: A mixture in-oil antifoam composition comprising a mixture of a defoaming agent comprising a defoamer in an oil carrier, a non-ionic surfactant having an HLB number less than about 10, and water. In particular, the defoamer is particulate hydrophobic silica dispersed in oil and the non-ionic surfactant has an HLB number of between 2 to 8.

Abstract: A terpolymer mixture having emulsifying and emulsion stabilizing properties comprising a mixture of (1) a water soluble vinyl monomer, (2) a water insoluble vinyl monomer having 12 to 30 carbon atoms and (3) a polymerizable vinyl monomer containing acid groups. The terpolymer may be used in combination with oil and water to form stable oil-in-water emulsions or in enhanced oil recovery procedures.

Abstract: Oil-in-water emulsions are stabilized against separation of the components by the addition of a novel interpolymer comprising (1) about 97 to about 99 percent by weight of a water soluble polymerizable monomer containing at least one acid group or salt thereof, and (2) about 1 to about 3 percent by weight of an ester of acrylic acid.

Abstract: The spread of printing paste when applied to textiles is inhibited by the inclusion of an "anti-wick agent" in the print paste. The "anti-wick agent" comprises a copolymer resulting from the polymerization of at least one monomer selected from the group consisting of methacrylic acid, acrylic acid, maleic acid and maleic anhydride with at least one monomer selected from the group consisting of acrylate esters and N-substituted acrylamides.

Abstract: A mixture having emulsifying and emulsion stabilizing properties resulting from the polymerization of (1) a water soluble vinyl monomer selected from the group consisting of acrylamide and methacrylamide, (2) a water insoluble vinyl monomer having an alkyl chain containing about 6 to 30 carbon atoms selected from the group consisting of alkyl acrylate esters, alkyl methacrylate esters, N-alkyl acrylamides, N-alkyl methacrylamides and vinyl esters, and (3) a polymerizable vinyl monomer containing a basic group or salt thereof selected from the group consisting of ##STR1## where X is --O-- or ##STR2## A.sup.- is an inorganic anion,R" is a divalent saturated organic group containing one to six carbon atoms, andR'" is hydrogen or an alkyl group containing one to six carbon atoms.

Abstract: An electrically conductive composite comprising conductive polyacetylene moiety, a nonconductive high nitrile resin, and a dopant. The high nitrile resin further comprises at least nitrile monomers or comonomers and optionally copolymerized with comonomers of mono-ethylenically unsaturated monomers and conjugated diolefins and further optionally containing an elastomeric component.The invention further includes a process for producing an electrically conductive composite comprising:(1) impregnating a high nitrile resin with a Zeigler type catalyst comprising an alkyl aluminum compound and alkyl, alkyl halide, halide, oxyhalide or alkoxide of Group IVA and VA metals,(2) exposing the impregnated high nitrile resin with an alkyne under polymerization conditions whereby polymerization occurs to form a polyacetylene/nitrile composite, and(3) adding dopant to the composite.

Abstract: A polyamide is produced by polymerizing at least one of an alpha, beta-unsaturated carboxylic acid and ammonia, an ammonium salt of an alpha, beta-unsaturated carboxylic acid, an alpha, beta-unsaturated nitrile and water, a beta-amino propionic acid or alkyl derivative thereof and an alpha, beta-unsaturated amide and ammonia in the presence of a catalyst comprising a pentaammine cobalt (III) complex.

Abstract: Olefinically unsaturated carboxylic acid monomers containing at least one activated carbon to carbon olefinic double bond and at least one carboxyl group, such as acrylic acid, are polymerized in an organic media in the presence of free radical forming catalysts and at least one oil soluble ionic surface active agent selected from the group consisting of:(a) anionic surface active agents of the formula:[(R-R.sub.a ').sub.b -X].sup.- M.sup.+(b) cationic surface active agents of the formula:[(R-R.sub.a ').sub.x NR.sub.y ].sup.+ A.sup.-and(c) amphoteric surface active agents of the formula: ##STR1## wherein R is a hydrophobic moiety having eight or more carbons,R' is a hydrophilic moiety,R" is each independently hydrogen, an alkyl group, an aryl group or an alkyl/aryl group,X.sup.- is a carboxylate, sulfonate, sulfate or phosphate group,M.sup.+ is a water soluble cation,A.sup.

Abstract: Water soluble block copolymers having two or more water soluble polymer blocks useful for controlling the viscosity of aqueous media used in enhanced oil recovery techniques are described.

Abstract: A polymer is disclosed which is represented by the formula ##STR1## wherein: Y is hydrogen, ammonium, an alkali metal or an alkaline earth metal; R.sup.1 and R.sup.2 are independently hydrogen, hydroxyl, amino, nitro, sulfo, phospho, carboxy, carboxyamido groups or hydrocarbon groups of 1 to about 20 carbon atoms; R.sup.3 is hydrogen or a hydrocarbon group of from 1 to about 12 carbon atoms; R.sup.4 and R.sup.5 are independently hydrogen or alkyl groups of 1 to about 3 carbon atoms; m is a number sufficient to provide the acid or salt portion of said polymer at a level of from zero to about 90% by weight of the total weight of said polymer; n is a number sufficient to provide the amide portion of said polymer at a level of from about 10% to about 99.5% by weight of the total weight of said polymer; p is a number sufficient to provide the maleimide portion of said polymer at a level of at least about 0.

Abstract: A polymer is disclosed which is represented by the formula ##STR1## wherein: Y is hydrogen, ammonium, an alkali metal or an alkaline earth metal; R.sup.1 and R.sup.3 are independently hydrogen or alkyl groups of 1 to about 3 carbon atoms; R.sup.2 is hydrogen or an alkyl group of 2 to about 3 carbon atoms, and R.sup.4 is hydrogen or an alkyl group of 1 to about 3 carbon atoms, with the proviso that R.sup.2 is not the same as R.sup.4 and either R.sup.2 or R.sup.4 is hydrogen; m is a number sufficient to provide the acid or salt portion of said polymer at a level of from about 10% to about 90% by weight of the total weight of said polymer; n is a number sufficient to provide the amide portion of said polymer at a level of from about 10% to about 90% by weight of the total weight of said polymer; and x is a number sufficient to provide said polymer with a molecular weight of at least about 100,000.

Abstract: A novel transition metal complex catalyst comprised of a transition metal attached to a ligand containing electron withdrawing substituents is employed in a polymerization process for producing nylon type polyamides.

Abstract: A process for producing polyamides comprising contacting a polyamide forming system with a transition metal complex catalyst at a temperature sufficient to cause polymerization. The transition metal complex catalysts are at least one binucleating ligand attached to at least one transition metal containing nucleus.

Abstract: Polyamides can be formed in good yields by the copolymerization of at least one alpha, beta-unsaturated nitrile with at least one alpha, beta-unsaturated carboxylic acid or ammonium salt thereof. These polymers are suitable for use as fibers, plastics, films and molding resins.