C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
23/385, 260/465.
C11D 11/04 (2006.01) B01J 19/18 (2006.01)
Patent
CA 1224798
ABSTRACT OF THE DISCLOSURE A process for neutralizing an organic sulfuric or sulfonic detergent acid, or mixture of such acids, in liquid state, with a liquid solution or slurry of neutralizing agent is conducted in a wiped film neutralizing reactor wherein a film of the organic acid(s) and neutralizing agent(s) is formed on an internal wall of the reactor, which wall (with the film) is continuously wiped during the neutralization reaction by a wall scraper or a plurality of scrapers which also agitate the reactants, whereby there is produced a pumpable aqueous slurry, a major proportion of which is of the detergent salt solids. During the reaction, which is usually preferably conducted under vacuum, the heat generated is removed, usually by evaporation of water, so as to maintain a desirable temperature for the neutralization. The combination of detergent acid and neu- tralizing agent is low in water content and the pumpable aqueous slurry or solution of detergent salt solids produced is at a high concentration of the detergent salt, above a gel region which prevents the concentration of such detergents made by other processes that produce lower detergent concentrations. Although the use of the wiped film reactor is important to the success of the neutralization reaction, in a broader sense the invention relates to reacting detergent acid and neutralizing agent of sufficiently low moisture contents so that the neu- tralized detergent salt product will be high in active ingre- dient content and non-gelling (above the gel region, due to its low moisture content).
463713
Colgate-Palmolive Company
Smart & Biggar
LandOfFree
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