Abstract: An in situ polymerized thermplastic resin incorporating hollow glass spheres, which are incorporated during polymerization of the resin, and a method of making a concentrate of hollow glass spheres dispersed in a thermoplastic resin with minimal sphere fracture by adding the spheres during polymerization of the resin.

Abstract: An improved moldable low density thermoplastic composite containing hollow glass spheres comprising a blend of thermoplastic resin, glass fiber reinforcement, and a concentrate of hollow glass spheres dispersed in thermoplastic resin.

Abstract: Fibers are conveniently coated with a uniformly thin and continuous elastomeric coating by contacting the fibers with a (1) a water-dispersed reactive polymer, (2) epoxy resin, and (3) curing agent; and wherein said water-dispersed reactive polymer is a composition comprising. (a) a lower molecular weight reactive polymer, (b) a select solvent, (c) a dispersing agent, and (d) water. The elastomeric films have a Tg value of about 0.degree. C. or below. The elastomer coated fibers are useful as strengtheners and impact modifiers for brittle materials such as epoxy resins.

Abstract: Novel water-dispersed compositions are prepared containing (1) 100 parts by weight of an amine-containing polymer, (2) at least 25 parts by weight of a solvent which is soluble in both water and organics and has a boiling point above about 100.degree. C., (3) at least about 0.8 equivalent of an organic acid having a pk.sub.a value of less than 5, and (4) from about 50 to about 750 parts by weight of water. The compositions are useful as a component in water-borne resin systems such as epoxies and polyesters.

Abstract: Physical properties of extruded amorphous thermoplastic pipe are improved by a method of extrusion which allows for relaxation of internal stress introduced during the processing. The stress is relieved by using an extrusion die having an inner and outer diameter which is smaller than the final product inner and outer diameter. The extruded pipe is allowed to expand as a result of melt swell and thereby permit relaxation of internal stresses within the extruded pipe. The expansion brings the inner and outer diameter to approximately the size of the final pipe. The further introduction of internal stress is avoided by pulling the extruded pipe from the extruding apparatus at a rate which is approximately the same as the rate of extrusion. The pipe can undergo a final sizing step to bring the extruded pipe to the final product size.

Abstract: Novel liquid polymer water-dispersed compositions are prepared containing (1) 100 parts by weight of a carboxyl-containing liquid polymer, (2) at least 25 parts by weight of a solvent which is soluble in both water and oganics and has a boiling point above about 100.degree. C., (3) at least about 0.8 equivalent of a base having a pk.sub.a value of greater than 7, and (4) from about 50 to about 750 parts by weight of water. The compositions are useful as a component in water-borne resin systems such as epoxies and polyesters.

Abstract: Soft linear thermoplastic polyurethanes, which have low permanent set, high tear propagation resistance, and low blocking, and which are extrudable by blown film techniques, are prepared by reacting one mole of a hydroxyl terminated polyester having a molecular weight from about 1800 to about 3600, from about 0.5 to about 2.0 moles of an aromatic glycol chain extender, and an organic diioscyanate in molar quantities substantially equal to the sum of the molar quantities of polyester and chain extender. The polyester is a mixed polyester prepared by reacting at least two different aliphatic glycols with one or more organic dicarboxylic acids or at least one alaphatic glycol with two or more organic dicarboxylic acids. The aliphatic glycol may have from 2 to about 10 carbon atoms. The organic dicarboxylic acid may be either aliphatic or aromatic and may have from 2 to about 12 carbon atoms. The preferred chain extender is hydroquinone bis(beta-hydroxyethyl)ether.

Abstract: A method for, and compositions, providing vulcanizable compounds of unsaturated polymers having an improved balance of scorch time and cure rates, ie., slow scorch times and fast cure rates, comprising adding to said vulcanizable polymers accelerating amounts of benzothiazolesulfenamides selected from the group consisting of N-oxydiethylene-2-benzothiazole sulfenamide, N-t-butyl-2-benzothiazole sulfenamide and N-cyclohexyl-2-benzothiazole sulfenamide, with N-oxydiethylenethiocarbamyl-N'-t-alkyl sulfenamides wherein the alkyl radicals contain 4 to 8 carbon atoms.

Abstract: A hierarchical distributive control system is disclosed. The lowest level of the system is a stand alone controller with hot plug in capability, which can accept either analog or digital signals, scale these signal with input subroutines, perform any one of a number of algorithms to produce control signals or can manually produce control signals and output these control signals as either analog or digital signals to field devices. A plurality of controllers communicates with an associated condenser over duel parallel digital communication buses with a full echo, verify communication routine. The condenser contains all records for all controllers under its supervision and can download control information into any replaced controller. A subhost is interconnected to a group of condensers and contains all records contained in all condensers under its supervision. All information can be uploaded from condensers to subhost or downloaded from subhost to condenser.

Abstract: A water resistant, devitrification resistant glass fiber consisting essentially of SiO.sub.2, Al.sub.2 O.sub.3, CaO, MgO, B.sub.2 O.sub.3, Na.sub.2 O, and F.sub.2 and/or Fe.sub.2 O.sub.3 and/or TiO.sub.2 and/or K.sub.2 O and/or SO.sub.3 in trace amounts, said glass fiber having a delta T of at least about 365.degree. F. and a durability (% fiber weight loss at 96.degree. C.) in water for 24 hours of less than about 0.9%.

Abstract: A glass fiber binder consisting of a urea-formaldehyde resin, a styrene-butadiene latex copolymer and a fully methylated melamine-formaldehyde copolymer.

Abstract: Thermal insulating articles are disclosed of the type which comprises a laminate of thermal insulation and a flexible jacket material with the jacket and thermal insulation being directly adhesively adhered to each other by means of a hot-melt adhesive. The hot-melt adhesive employed consists essentially of an asphaltene enriched asphalt, an ethylene-vinyl acetate copolymer and a wax.

Abstract: Metal vaporization from precious metals is reduced by applying to the surface of the metal a flame sprayed coating comprising a refractory material and a glass.

Abstract: An aqueous emulsion of a blend of asphalt having viscosity at 165.degree. F. of about 100 to about 1000 centipoises with a petroleum extender oil preferably having a viscosity at 40.degree. C. of not more than about 1000 centistokes, preferably stabilized with a protective colloid in conjunction with conventional surfactants, provides a particularly effective and long-lasting treatment of substrates, such as dirt or gravel roads and the like, for suppressing the evolution of fugitive dust therefrom by applying the emulsion, usually in dilute form, to the exposed surface of the substrate, as by spraying.

Abstract: A glass fiber binder consisting of a urea-formaldehyde resin, a styrene-butadiene latex copolymer and a fully methylated melamine-formaldehyde copolymer.

Abstract: An edging compound for ceiling tile comprises a hydroxyethyl cellulose, an acrylic latex, a polypropylene and one or more particulate fillers.

Abstract: The adherence between an asphalt and aggregate is increased by incorporating into the asphalt a vinyl monomer and an alkenyl azabenzene.

Abstract: A method for reclaiming used asphalt by mixing it with a chemically modifying system consisting of a polymerizable vinyl monomer and an alkenyl azabenzene.

Abstract: The adherence between an asphalt and aggregate is improved by including in the combination styrene and an acrylamide.

Abstract: A method for impregnating a bundle of sized glass fibers with a composition comprising a polytetrafluoroethylene resin, a film-forming acrylic resin, a thickening agent and a polyhydrolyzable organosilane having nonhydrolyzable amine functionality is described. The impregnated bundles are especially suited for at least the warp of fabrics for filtering entrained particulates from gases such as flue gases from the combustion of hydrocarbon fuels such as coal.