Patent · US Expired

Modified cellulose ethers and the use thereof in dispersion paints

US5302196A · kind A · utility

1Cited by

4References

16Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Christoph Meister · Wiesbaden, DE
Reinhard Donges · Bad Soden, DE
Walter Schermann · Mainz, DE
Walter Schrattenholz · Mainz, DE

Key dates

Filing date	Sep 9, 1991
Grant date	Apr 12, 1994
Priority date	—
Expiry date	Sep 9, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L1/282
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to water-soluble cellulose ethers, containing at least one fluorine-free radical attached via an ether link and selected from the group hydroxyethyl, hydroxypropyl, methyl, ethyl and carboxymethyl, and a hydrophobic substituent which comprises one fluorine-containing alkyl radical of 3 to 24, in particular 5 to 18, carbon atoms, the fluorine content being 0.05 to 5, in particular 0.1 to 1% by weight, based on the dry weight of the cellulose ether.

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