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:
Mar. 12, 2013
Filed:
Dec. 09, 2010
Zhufang Liu, Kingsport, TN (US);
Lori Cooke Ensor, Blountville, TN (US);
Kelmara Khadene Kelly, Longview, TX (US);
Jerome Leonard Stavinoha, Jr., Longview, TX (US);
Kim Steven Chamberlin, Kingsport, TN (US);
Charles Everette Kelly, Kingsport, TN (US);
Carey Dan Ashcroft, Longview, TX (US);
Charles Edwan Sumner, Jr., Kingsport, TN (US);
Zhufang Liu, Kingsport, TN (US);
Lori Cooke Ensor, Blountville, TN (US);
Kelmara Khadene Kelly, Longview, TX (US);
Jerome Leonard Stavinoha, Jr., Longview, TX (US);
Kim Steven Chamberlin, Kingsport, TN (US);
Charles Everette Kelly, Kingsport, TN (US);
Carey Dan Ashcroft, Longview, TX (US);
Charles Edwan Sumner, Jr., Kingsport, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
Disclosed is a process for the isomerization of 2,2,4,4-tetraalkylcyclobutane-1,3-diols, such as 2,2,4,4-tetramethylcyclobutane-1,3-diol, by contacting the diol with a supported ruthenium catalyst in the presence of hydrogen at elevated pressures and temperatures. The process is carried under conditions in which there is no net production of 2,2,4,4-tetraalkylcyclobutane-1,3-diol. The process may be carried out in the presence or absence of a solvent and in the liquid or vapor phase.