Patent · US Active

Regioselectively substituted cellulose esters

US11136414B2 · kind B2 · utility

4Cited by

5References

21Claims

0Family size

Assignee

Eastman Chemical Company · US

Inventors

Casey Lynn Elkins · Kingsport, US
Robert Lin · Kingsport, US
Michael John Rodig · Johnson City, US
Robert Jacks Sharpe

Key dates

Filing date	Mar 28, 2018
Grant date	Oct 5, 2021
Priority date	—
Expiry date	Mar 28, 2038

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.