Processing of detergent compositions containing nonionic...

Details Processing of detergent compositions containing nonionic... Processing of detergent compositions containing nonionic...

C - Chemistry, Metallurgy

11

D

134/3.3

C11D 11/02 (2006.01) C11D 1/66 (2006.01) C11D 3/37 (2006.01)

Patent

CA 1121245

cC.1049 ABSTRACT Autoxidation during the spray-drying of detergent powders containing major proportions of nonionic surfactants can be reduced by using a copolymer as an antioxidant. The copolymer is formed from dicyclopentadiene and a mixture of 2- and 3-methyl phenols. It is particularly effective with powders containing nonionic surfactants of the alkoxylated alcohol type, for instance C6-C24 primary or secondary alcohols ethoxylated with from 3 to 25 moles of ethylene oxide per mole of alcohol, Preferred amounts of the copolymer are from 0.001 to 0.5% by weight based on the detergent composition.

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