The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 2023
Filed:
Nov. 09, 2017
Eastman Chemical Company, Kingsport, TN (US);
Haining An, Kingsport, TN (US);
David Wayne Compton, Weber City, VA (US);
Michael Eugene Donelson, Kingsport, TN (US);
Wesley Wayne McConnell, Kingsport, TN (US);
Jeffrey Todd Owens, Kingsport, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
The application discloses cellulose ester compositions comprising two or more miscible blends of cellulose ester each comprising a plurality of propionyl substituents having tunable rheology and physical properties not achievable by any one of the cellulose esters alone. These cellulose ester compositions can be further processed, with or without other materials such as plasticizers, flame retardants, and blowing agents, and converted into articles. These cellulose ester compositions have higher modulus and have low to no butyryl/butyric acid content relative to cellulose acetate butyrate ('CAB') cellulose ester compositions made from CABs having a butyryl content of greater than 30 wt %.