Patent · US Active

Process for producing a crosslinked cellulose ether

US12312420B2 · kind B2 · utility

0Cited by

8References

13Claims

0Family size

Assignee

DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

Alexandra Hild · Soltau, DE
Joerg Neubauer · Rheydt, DE
Steffen Schmidt · Dresden, DE
Robert Baumann · Rüschlikon, CH

Key dates

Filing date	Apr 17, 2020
Grant date	May 27, 2025
Priority date	—
Expiry date	Feb 18, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08B11/08
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process for producing a crosslinked cellulose ether including contacting an activated cellulose material with (i) an aqueous crosslinking agent emulsion, wherein the aqueous crosslinking agent emulsion is a mixture of (ia) at least one crosslinking agent; (ib) water; and (ic) any other optional components desired; and (ii) at least one etherification reagent; wherein the aqueous crosslinking agent emulsion (i) and the at least one etherification reagent (ii) react with the activated cellulose material to form the crosslinked cellulose ether; and a crosslinked cellulose ether produced by the above process.

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