Patent · US Expired

Method for thickening aqueous systems

US4542175A · kind A · utility

13Cited by

6References

15Claims

0Family size

Assignee

Rohm Co., Ltd. · JP

Inventors

Herbert Fink · Emmelshausen, DE
Klaus Huebner · Ober-Ramstadt, DE
Gerhard Markert · Ober-Ramstadt, DE
Norbert Suetterlin

Key dates

Filing date	Aug 12, 1983
Grant date	Sep 17, 1985
Priority date	—
Expiry date	Aug 12, 2003

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06M15/263
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

What is disclosed is a method for thickening aqueous systems in the acid range at a pH below 7 by the addition of an aqueous dispersion of a synthetic polymer having a molecular weight of at least 500,000, and which is water soluble or at least colloidally dispersible at a pH below 7, said polymer comprising (A) 5-100 percent by weight of at least one monomer having at least one basic nitrogen atom (B) 0-95 percent by weight of at least one monomer which has at most limited solubility in water, and (C) 0-30 percent by weight of at least one further non-basic, water soluble comonomer.

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