Patent · US Expired

Process for dewatering fine-particle solids suspensions

US5545332A · kind A · utility

3Cited by

3References

18Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Rita Koester · Goldkronach, DE
Gerhard Stoll · Winnenden, DE
Peter Daute · Beverstedt, DE

Key dates

Filing date	Dec 1, 1994
Grant date	Aug 13, 1996
Priority date	—
Expiry date	Dec 1, 2014

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF26B5/005
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Finely divided solids suspensions can be dewatered by adding to the solids suspension a mixed hydroxy ether of the formula ##STR1## wherein R.sup.1 is a linear hydroxy alkyl group containing from 2 to 16 carbon atoms with the hydroxyl group on the carbon atom adjacent to the carbon atom with the ether linkage and R.sup.2 is a linear alkyl group with 1 to 15 carbon atoms with the proviso that the sum of the total carbon atoms in R.sup.1 and R.sup.2 is 5 to 17, R.sup.3 is a linear or branched alkyl group with 1 to 12 carbon atoms and n is a number of from 1 to 20. The mixed hydroxy ethers are readily biodegradable, generate very little foam and have a low solidification point.

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