Patent · US Expired

Modifying surface tension of finely-divided materials in a liquid

US4657593A · kind A · utility

16Cited by

7References

6Claims

0Family size

Assignee

SKW Trostberg Aktiengesellschaft · DE

Inventors

Alois Aignesberger · Trostberg, DE
Johann Plank · Kelheim, DE

Key dates

Filing date	Jul 15, 1985
Grant date	Apr 14, 1987
Priority date	—
Expiry date	Jul 15, 2005

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S516/03
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention provides acid group-containing, thermostable, hydrophilic condensation products of aldehydes and ketones, wherein the ketones used are symmetrical or asymmetrical ketones with acyclic aliphatic, araliphatic and/or aromatic radicals, at least one radical being non-aromatic. The present invention also provides processes for the production of these condensation products, which can be used as thickening agents, retention agents, surface-active agents, dispersion agents and/or liquefying agents, especially in aqueous systems.

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