Abstract: The invention relates to an method of producing a titanium aluminide coating on a substrate by producing a flow of hydrogen and gaseous aluminum monochloride over a titanium surface to react to form a gaseous flow of titanium trichloride and aluminum monochloride and contacting the substrate with the flow of titanium trichloride and aluminum monochloride at a temperature of 800.degree. to 1200.degree. C., said substrate being a temperature below the temperature of the gases.

Abstract: Novel salts of tertiary amines and alpha-substituted carboxylic acids have advantages as delayed action thermally activated catalyts such as in urethane and epoxy catalysis. Some salts of tertiary amines tend to dissociate reversibly when heated. However, the compounds of the present invention preferentially decompose, irreversibly, to generate carbon dioxide when heated.

Abstract: An improved flexible vacuum bellows is provided for interconnecting flanged pipe sections which comprises a flexible tubular joint member having one or more radially inwardly extending U-shaped convolutions and having bores that align with and are penetrated by fastening means joining the tubular joint member to the pipe sections.

Abstract: Iodine pentafluoride is produced from gaseous fluorine and molten iodine by contacting the iodine with fluorine in a reaction zone maintained at a temperature in the range of about 114.degree. to about 280.degree. C. The process results in high yields of pure iodine pentafluoride.

Abstract: Chrysanthemyl alcohol is selectively oxidized to the corresponding aldehyde by contact with oxygen-containing gas in the presence of supported noble metal catalyst composed of platinum on carbon. The obtained aldehyde may be further converted to chrysanthemic acid by oxidation with a solid inorganic oxidizing agent such as silver oxide in excess of stoichiometric quantity, or by reaction with a catalytic amount of oxidation promoting catalyst such as silver oxide in the presence of cupric oxide and molecular oxygen.

Abstract: Polymerization and condensation reactions of organic isocyanates are catalytically promoted by the use of N-hydroxyalkyl quaternary ammonium carbonylate salts, particularly in the production of polyisocyanurates and polyurethanes. Among the exemplary preferred catalysts are N-hydroxypropyl trimethyl ammonium salts of carboxylic acids such as those of formic and acetic acids and of fatty acids such as hexanoic and octanoic acids and the like.

Abstract: Certain quaternary ammonium salts are incorporated in unsaturated polyester thermosetting molding compositions containing peroxyketal initiators to accelerate free radical initiated curing of these compositions.

Abstract: Isocyanate reactions, such as their condensation with polyols to form polyurethanes and their polymerization to polyisocyanurates, are promoted by certain hydroxyalkyl tertiary amine catalysts corresponding to the formula ##STR1## wherein Y = CH.sub.3 or ZZ = --ch.sub.2.ch.sub.

Abstract: A method for removing low concentrations of oxidizable organic contaminants from an oxygen containing inert gas comprises: (1) adsorbing the contaminants on a sorptive media which contains an oxidation catalyst in a reaction zone; (2) interrupting the flow of the gas through said sorptive media; (3) thermally desorbing the adsorbed contaminants; (4) oxidizing the desorbed contaminants to innocuous reaction products; and (5) venting and purging the reaction products from the reaction zone.

Abstract: The present invention relates to surface modification of synthetic resin fiber form materials, notably polyolefin and polyacrylonitrile fiber form materials whose surface has been modified by treatment with elemental fluorine, and to the fluorination process.

Abstract: Ambient air, during an on-stream period, is passed serially through a pretreatment adsorbent bed removing moisture and carbon dioxide therefrom and the thus dried and purified air then passed through a main adsorbent bed selective for retention of nitrogen, the oxygen-rich effluent being collected in an expandable receiving vessel. Nitrogen of high purity, is desorbed by suction from the main bed in a direction chamber to that of the initial air charge and passes from the main bed into and through the pretreatment bed to a collection vessel. Preceding the vacuum desorption step both the pretreatment bed and the main bed are rinsed with the high purity nitrogen product gas from a previous stage in the operation. Following evacuation the beds are repressured with a portion of the oxygen-rich gas drawn from the expandable receiving vessel. At least two parallel trains of adsorbent beds are employed in alternating timed sequence for continuity of operation.

Abstract: Adhesion of polyester yarn, tire cord or fabric in polyester reinforced rubber goods such as tires is improved by fluorinating the polyester yarn, tire cord or fabric prior to incorporation into the tire and rubber goods.

Abstract: Vinyl halide polymers are removed from the internal surfaces of reaction equipment with a solvent and the solvent recovered by: (1) contacting the polymer-containing solvent with steam forming a slurry; (2) cooling the slurry to form a crumbly precipitate; (3) separating the resulting slurry into an aqueous solvent and a precipitate; (4) adding water to the precipitate to form a second slurry; and (5) separating the second slurry into a second aqueous solvent solution and vinyl halide polymers. The aqueous solvent solutions are dehydrated before being reused in solvent cleaning.

Abstract: The present invention relates to surface modification of synthetic resin fiberform materials, notably polyamide and polyester fiberform materials whose surface has been modified by treatment with elemental fluorine, and to the fluorination process.