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:
May. 19, 2026
Filed:
Nov. 30, 2021
Applicant:
Eastman Chemical Company, Kingsport, TN (US);
Inventors:
Mesfin Ejerssa Janka, Kingsport, TN (US);
Robert Thomas Hembre, Johnson City, TN (US);
Scott Donald Barnicki, Kingsport, TN (US);
Robert Sterling Kline, Kingsport, TN (US);
Stephanie Rollins Testerman, Kingsport, TN (US);
Assignee:
Eastman Chemical Company, Kingsport, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/143 (2006.01); B01J 31/22 (2006.01);
U.S. Cl.
CPC ...
C07C 29/143 (2013.01); B01J 31/22 (2013.01); B01J 2531/821 (2013.01); C07C 2531/28 (2013.01);
Abstract
Disclosed is a process for preparing 2,2,4,4-tetramethylcyclobutane-1,3-diol by reacting 2,2,4,4-tetramethylcyclobutanedione with a secondary alcohol in the presence of a transfer hydrogenation catalyst.