Patent · US Expired

Foam control in the sugar industry and in the yeast industry

US4753885A · kind A · utility

9Cited by

0References

7Claims

0Family size

Assignee

BASF SE

Inventors

Wolfram Dietsche · Bischofswerda, DE
Klaus Lorenz · Worms, DE
Christos Vamvakaris · Kallstadt, DE
Albert Hettche · Heßheim, DE

Key dates

Filing date	Jul 23, 1987
Grant date	Jun 28, 1988
Priority date	—
Expiry date	Jul 23, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S435/812
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Foam is controlled in the sugar industry and yeast industry by a process in which oxyalkylation products of the formula I EQU R--O--(X.sub.1).sub.n --(X.sub.2).sub.m --(X.sub.3).sub.p --Z where R is alkyl of 6 to 22 carbon atoms or alkylphenyl where alkyl is of 6 to 12 carbon atoms, X.sub.1 and X.sub.3 are ethylene oxide units, n and p are each from 0 to 15 and the sum of n and p is not less than 2, the groups X.sub.2 are propylene oxide and/or butylene oxide units, m is from 0 to 15 and Z is straight-chain or branched alkyl of 1 to 4 carbon atoms, allyl or benzyl, having a turbidity point of <75.degree. C., are used as antifoams.

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