Nalco Holding Company

About: Nalco Holding Company is a based out in . It is known for research contribution in the topics: Corrosion & Aqueous solution. The organization has 2375 authors who have published 3056 publications receiving 51473 citations.

Method for the hydrogenation of nitriles to primary amines

Abstract: An improved process for preparing primary amines from an aliphatic nitrile and hydrogen utilizing a Raney cobalt catalyst which contains from about 2 to 35 weight percent of aluminum on a 100 weight percent total weight basis. Preferably, this catalyst is prepared under low temperature conditions from a cobalt-aluminum alloy. The process can be practiced continuously for extended periods of time at high reaction rates and high conversion yields even when employing concentrated nitrile starting feeds.

Dispersing asphaltenes in hydrocarbon refinery streams with α-olefin/maleic anhydride copolymer

Abstract: Dispersing asphaltenes in liquid hydrocarbons, particularly formed during the refining of crude petroleum, is disclosed. The dispersant comprises a free radically polymerized copolymer of an α-olefin of from about 10 to about 36 carbon atoms and maleic anhydride wherein the anhydride moieties along the copolymer backbone are substantially unhydrolyzed or otherwise not derivatized. The copolymer has a ratio of α-olefin to maleic anhydride of from about 1:1 to about 1:5 and a molecular weight of from 5000 to about 100,000. Alternatively the dispersant comprises a mixture of the α-olefin/maleic anhydride copolymer and an alkyl substituted phenol/formaldehyde liquid polymer, such as nonyl phenol/formaldehyde polymer, or a lipophilic/hydrophilic vinylic polymer, such as hydroxyethyl methacrylate/lauryl acrylate copolymer. Also disclosed is a liquid hydrocarbon dispersion containing asphaltenes and 1-100 ppm of the α-olefin/maleic anhydride copolymer.

Surfactant additive for hec emulsion

Abstract: A method for detackifying oversprayed paint solids in a paint spray booth utilizes an oil-in-water emulsion as the hydrophilic fluid for capturing and detackifying oversprayed paint, which emulsion contains a certain nonionic surfactant, which surfactant greatly improves detackification performance when the paint formulation being sprayed is a low VOC formulation, and particularly a two-component formulation. The nonionic surfactant is an ethoxylated C8-10 alkyl phenol having an HLB value of from about 4.5 to 15.5.