Patent · US Expired

Antifoam composition and process with .alpha.-hydroxyamine derivatives

US4094812A · kind A · utility

3Cited by

4References

13Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Rudi Heyden
Adolf Asbeck · Goldkronach, DE
Michael Eckelt · Düsseldorf, DE
Manfred Petzold · Hilden, DE
Gunter Uphues · Düsseldorf, DE

Key dates

Filing date	Dec 20, 1976
Grant date	Jun 13, 1978
Priority date	—
Expiry date	Dec 20, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/17
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Antifoam compositions on the basis of an .alpha.-hydroxyamine derivative of the formula ##STR1## wherein A is --NHCO-- or --NHCONH--, R.sub.1 and R.sub.2 are H or alkyl having 1 to 22 carbon atoms and the sum of the carbon atoms in R.sub.1 and R.sub.2 is from 8 to 22, and R.sub.3 is alkyl having 8 to 22 carbon atoms or hydroxyalkyl having 8 to 22 carbon atoms; as well as the process of controlling foam in a foamable liquid by introducing therein an antifoam effective amount of said .alpha.-hydroxyamine derivative. The antifoam .alpha.-hydroxyamine derivatives are effective antifoam agents for most industrial purposes and are suitable for use in oil and latex paints.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.