Use of alkoxylation products of epoxidized fats as antifoaming agents
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsHorst-Werner Wollenweber, Klaus Hornfeck, Dieter Kaps, Bernhard Nellessen, Rita Koester, Wolfgang Drees, Peter Daute
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Abstract
A method of controlling or preventing foam in an aqueous system is provided, wherein an effective amount of an alkoxylated, epoxidized fatty compound that has been ring-opened with a nucleophile is determined and added to the system. After ring opening with the nucleophile, the epoxidized fatty compound is alkoxylated with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, and butylene oxide.
Claims47
A method of controlling or preventing foam in an aqueous system comprising the steps of determining an amount effective to control or prevent foam in the system of a compound prepared by alkoxylating an epoxidized fatty compound that has been ring-opened with a nucleophile with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, and butylene oxide, and adding to the system the determined effective amount of the compound.
A method of controlling or preventing foam in an aqueous system comprising the steps of:
- (a) determining an amount effective to control or prevent foam in the system of a compound prepared by:
- i. reacting an epoxidized fatty compound selected from the group consisting of epoxidized triglycerides, epoxidized fatty acid esters of monohydric alcohols, epoxidized fatty alcohols, and epoxidized fatty alcohol esters with a nucleophile selected from the group consisting of water, monohydric alcohols, polyhydric alcohols, and carboxylic acids to effect at least partial opening of the epoxide rings of the epoxidized fatty compound;
- and
- ii. alkoxylating the at least partially ring-opened epoxidized fatty compound with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, and butylene oxide;
- and
- (b) adding to the aqueous system the determined effective amount of the compound.
Dependencies are inferred from the claim text.