Abstract: A stable dispersion of a polymer in a polyol which imparts improved combustion resistance to polyurethane foams prepared therefrom wherein the polymer is a free-radical initiated copolymer containing from about 0.5 to 75 weight percent, based on the copolymer, of acrylonitrile and from about 25 to 99.5 weight percent, based on the copolymer, of at least one other polymerizible ethylenically unsaturated monomer and wherein the copolymer is characterized by a crosslinking coefficient of less than 55.

Abstract: A new class of polymer/polyols based on the condensation polymerization of an oxalate ester and a diamine directly in a polyether polyol. The resultant polyoxamate/polyols have viscosities ranging from 1,500 to 15,000 cps. These polyoxamate/polyols are useful in the preparation of urethane elastomers and high resilience foams.

Abstract: Reaction of silylamine with a metallic carboxylate produces siloxylated organometallic compounds with M--O--Si bonds. These siloxylated organometallic compounds are useful catalysts in the preparation of urethane foams and elastomers, especially when prepared in situ with the urethane foam or elastomer reactants.

Abstract: A hydrogen bearing silyl carbamate of the general formula:HSiR.sub.n (O.sub.2 CNR'R").sub.3-nis synthesized from hydrogen bearing aminosilane and gaseous carbon dioxide. The resulting hydrogen bearing silyl carbamate is novel in the single hydrogen attached to the silyl carbamate and represents a major new compound for creating novel compositions of matter.

Abstract: A process whereby silanes of the general formula:HSi(NRR').sub.x (R").sub.3-xwherein R, R' and R" are independently an aliphatic or aromatic, substituted or unsubstituted, saturated or unsaturated hydrocarbon radical having from one to eight carbon atoms, inclusive and R and R' may also be hydrogen and where R" may also be alkoxy and where x has a value from one to three are reacted in the presence of a catalyst with alcohols in the stoichiometry of approximately one equivalent of alcohol per mole of silicon-nitrogen bond to give unexpectedly high yields of alkoxyhydridosilanes. In the reaction the silyl amine groups have been replaced by alkoxide groups without significant loss of the silicon-hydrogen group. Similar reactions in the absence of a catalyst give undesirably low yields of the corresponding alkoxy silanes and, in most cases, substantial loss of silyl hydrogen groups.

Abstract: Antifoam compositions containing high viscosity polydiorganosiloxane oils, finely divided hydrophobic solids, and siloxanepolyoxyalkylene block copolymer surfactants, which can be used per se or in the form of emulsions.

Abstract: An inorganic antimony compound that is surface modified with up to about 10 percent by weight of a polysiloxane results in a flame retardant with improved rheology, flow, storage and dispersing characteristics.

Abstract: Amino catalyst mixtures containing from 10 to 95 percent by weight of 2-diisopropylamino ethanol and from 5 to 90 percent by weight of an amine or mixture of amines selected from the group described herein has been found to be a replacement for N-ethylmorpholine in the production of polyurethane foams.

Abstract: Tertiary amine catalyst mixtures comprising at least one hydroxyalkyl piperazine, preferably 2-hydroxyethyl piperazine or 1,4-di-(2-hydroxyethyl) piperazine, and at least one other tertiary amine for increasing the processability of hydroxyalkyl piperazine in controlling the water-isocyanate reaction rate to obtain optimum performance in cellular polyurethane foam formulations and/or enhancing the compatibility of hydroxyalkyl piperazine with other foaming ingredients in flexible polyester polyurethane foam formulation; and a process for producing cellular polyurethanes, such as flexible polyester or polyether polyurethane foam and high resilience polyether polyurethane foam, by effecting the reaction of an organic polyol reactant and an organic polyisocyanate reactant in the presence of a blowing agent and said tertiary amine catalyst mixture, the resulting cellular polyurethanes exhibiting very low residual amine odor.

Abstract: Ferrosiloxane compounds prepared by reacting iron carboxylates and N,N-disubstituted silylamines are useful as thermal stabilizers for diorganopolysiloxanes. The thermally stable diorganopolysiloxanes find utility as heat transfer fluids, high temperature lubricants, hydraulic fluids and electric insulating fluids, to name but a few.

Abstract: The coupling action of polysulfide alkoxy silanes in rubbers is enhanced by the utilization of triorganophosphine compositions.

Abstract: Curable isocyanate prepolymers have been made in which all or a portion of the available isocyanate terminal groups have been reacted with a secondary amine-containing silane monomer having two trialkoxy silane groups.

Abstract: Calcium carbonate is rendered receptive to silanation by pretreatment with soluble sodium silicate.

Abstract: Combustibility properties of flexible polyurethane foams made with flame retardant additives are increased by incorporating into the foam-forming reaction mixture a combination of certain flame retardant surfactants and certain low molecular weight polyols.

Abstract: Addition agents are blended with a modified tall oil pitch binder and briquetted, extruded, molded, pelletized, or tabletized into a unitary composition. This compacted composition is then fed into a metallurgical operation, such as steel-making, at an appropriate stage in the operation to effect a desirable composition or property. The tall oil pitch binder being modified chemically with either a polycarboxylic acid, a polyamine, a polyisocyanate, an epoxy resin or a polyol.

Abstract: Low molecular weight compolymers and terpolymers of the general structure: ##STR1## wherein R.sub.1 is hydrogen or a methyl radical, R.sub.2 is hydrogen or COOM and M is a hydrogen, alkali metal cation or ammonium ion, exhibit excellent depressive action in the flotation of non-sulfide mineral ores thereby resulting in improved selectivity and recovery. The low molecular weight copolymers and terpolymers, perform depressing action without resulting in any associated flocculation in the flotation system. These copolymers and terpolymers can be combined with other known depressing agents in nonsulfide ore flotation processes such as starch, dextrin, water soluble gum and the like, to obtain equivalent or improved selectivity and recovery than would be obtained using these depressants alone.

Abstract: Modified tall oil pitch is blended with a metallurgical addition agent and briquetted, extruded, molded, pelletized, or tabletized into a unitary composition. The tall oil pitch is modified chemically to increase the molecular weight and improve the binding properties.

Abstract: This invention relates to normally liquid, stable polymer/polyol compositions formed by polymerizing, in the presence of a free radical catalyst, an ethylenically unsaturated monomer or monomers dissolved or dispersed in a polyol mixture including a coupled polyol consisting of the reaction product of a polyol having a functionality in excess of 2 reacted with polyisocyanate in such proportion that the ratio of hydroxyl groups to isocyanato groups is greater than 1. In one embodiment, the coupled polyol is made in situ in the base polyol by addition thereto of the required amount of the polyisocyanate. The novel polymer/polyol compositions are convertible to polyurethane foams and elastomers.

Abstract: Cobalt(II)-, nickel(II)-bearing aqueous solutions may be treated with an extractant comprising an organic-soluble phosphinic acid, or a salt thereof, to separate the cobalt(II) from the aqueous solution. Typical extraction techniques compatible with the instant process include liquid- liquid extraction employing either mixer settlers or columns, packed beds of supported extractants as in ion exchange, liquid membrane extraction and selective supported membrane extraction.

Abstract: This invention relates to polymer/polyols prepared from an ethylenically unsaturated monomer or a mixture of such monomers and characterized by the utilization, in the preparation thereof, of certain preformed stabilizers tailored to the monomer system employed, a method of preparing such polymer/polyols, and to the preformed stabilizers themselves. In general, the stabilizer, compatible with the polyol portion of the polymer/polyol, comprises a copolymer of an anchor portion consisting of an ethylenically unsaturated monomer or mixture of such monomers and a solvatable portion consisting of a propylene oxide polymer having a number average molecular weight of at least 800. The resulting polymer/polyols are stable, fluid, essentially free from scrap and seeds as produced and contain relatively small polymer particles. In accordance with one aspect of this invention, the polymer particles are essentially spherical in shape.