Patent · US Active

Regioselectively substituted cellulose esters

US11939407B2 · kind B2 · utility

0Cited by

9References

17Claims

0Family size

Assignee

Eastman Chemical Company · US

Inventors

Casey Lynn Elkins · Kingsport, US
Robert Jacks Sharpe
Bin Wang · Beijing, CN

Key dates

Filing date	Jan 26, 2023
Grant date	Mar 26, 2024
Priority date	—
Expiry date	Jan 26, 2043

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2301/14
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present application discloses regioselectively substituted cellulose esters, films made from the regioselectively substituted cellulose esters and methods for making the same. The regioselectively substituted cellulose esters are synthesized using trifluoroacetic anhydride and cellulose with various acyl donors or acyl donor precursors.

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