Abstract: Catalysts for the polymerization of ethylene and the copolymerization of ethylene with other olefins have been prepared by depositing an organo-chromium compound on a silica support which has been fluorided at low temperatures.

Abstract: Styrene oxide is hydrogenated in the presence of a hydrogenation catalyst to produce 2-phenylethanol. The proportion of unreacted styrene oxide in the reaction mixture is carefully controlled in order to avoid the production of undesired by-products.

Abstract: One-shot, flexible polyurethane foams capable of being thermally bonded to various substrates are produced by adding low molecular weight alkylene glycols, glycol ethers, triols, alkanolamine, or polyhydric phenols as modifiers to conventional polyisocyanate foaming mixtures.

Abstract: Paper and textile fabric substrates have been rendered water repellent by treatment of water-dispersible aqueous emulsions of epoxy-silicones where the emulsifying agent is an anionic sulfonate emulsifier, which is capable of forming stable aqueous emulsions of epoxy-silicones, which cure rapidly without curing catalysts.

Abstract: Liquid siloxanes are employed as additives in polyester composites containing vinyl acetate polymers.

Abstract: A solvent mixture consisting of dimethyl sulfoxide and formaldehyde is used for the hydroxy-alkylation of cellulose.

Abstract: The polymerization of vinyl acetate during distillation can be inhibited by 4-(2,6-dimethylheptyl) phenol and other liquid p-alkyl phenols.

Abstract: Articles for conditioning hair have been fabricated by blending water soluble polymers with water insoluble polymers to form interpenetrating networks so that the water soluble polymer can be extracted from the article when wet or when brought in contact with wet hair.

Abstract: Sulfur dioxide can be adsorbed from gas mixtures using cross-linked, water-insoluble polymers of N-glycidylpiperazine or N-glycidyl polyalkylpiperazines as the adsorbents.

Abstract: Cellulose ethers which are resistant to enzyme catalyzed hydrolysis can be prepared by using a mixture of sodium and lithium hydroxides as the catalysts in conjunction with etherification reagents, such as, epoxides or alkyl halides.

Abstract: The separation of cobalt from nickel is enhanced by extracting aqueous solutions of the respective thiocyanates with a cyclic ketone, preferably isophorone.

Abstract: Copper values are extracted from aqueous solution by dihydroxy azoarenes dissolved in a water immiscible organic solvent.

Abstract: Articles for conditioning hair have been fabricated by blending water soluble polymers with water insoluble polymers to form interpenetrating networks so that the water soluble polymer can be extracted from the article when wet or when brought in contact with wet hair.

Abstract: A series of polyamide-imides which are both tractable and soluble in polar solvents as well as stable at high temperatures has been prepared by the condensation polymerization of aromatic diamines or oligomers containing oxygen, sulfone, and optionally alkylidene linkages with trimellitic acid, trimellitic acid anhydride or trimellitic anhydride acid chloride.

Abstract: Hydraulic fluids having excellent water tolerance at -40.degree.C. are provided by a mixture of an alkoxy-siloxane and a glycol ether phosphoric acid ester.

Abstract: Polymer composites having enhanced mechanical or chemical properties have been prepared by first coating the filler component of the composite with a free-radical polymerization initiator which adheres to the surface of the filler and then polymerizing an ethylenically unsaturated monomer onto the filler.

Abstract: Ice release agents are formulated from alkylene glycols having two to three carbon atoms, water, an alkanol and a salt of crosslinked polyacrylic acid.

Abstract: Unsymmetrical halogen-substituted diacyl peroxides have been prepared either by rapidly adding an .alpha.-halogen-substituted aliphatic acyl halide and a hydrocarbon solvent to an aqueous solution of an alkali metal peroxide followed by portion-wise addition of an acyl halide or by rapidly adding an acyl halide and a hydrocarbon solvent to an aqueous solution of an alkali metal peroxide followed by portion-wise addition of an .alpha.-halogen-substituted aliphatic acyl halide. The formation of diacyl peroxides and symmetrical halogenated diacyl peroxides as by-products is minimized by either technique.

Abstract: Polysulfone resins dissolved in organic solvents can be recovered from these solutions by dispersion into water followed by treatment of the dispersion with an aliphatic hydrocarbon.