Eastman Chemical Company

Lori Cooke Ensor

Jerome Leonard Stavinoha, Jr

Zhufang Liu

Charles Edwan Sumner, Jr

Guy R Steinmetz

Kim S Chamberlin

Charles Everette Kelly

Carey Dan Ashcroft

Kelmara Khadene Kelly

Disclosed is a process for the preparation of a 2,2,4,4-tetraalkylcyclobutane-1,3-diols by hydrogenation of a 2,2,4,4-tetraalkylcyclobutane-1,3-dione in the presence of a catalyst comprising ruthenium deposited on a carbon nanotube support. The process is useful for the preparation of 2,2,4,4-tetramethylcyclobutane-1,3-diol. The process may be carried out in the presence or absence of a solvent and in the liquid or vapor phase. Also disclosed is a process for modifying the cis:trans ratio of the 2,2,4,4-tetramethylcyclobutane-1,3-diol hydrogenation product by contacting the diol with hydrogen in the presence of a supported ruthenium catalyst.

Process for the preparation of 2,2,4,4-tetraalkylcyclobutane-1,3-diols

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.

Process for the isomerization of 2,2,4,4-tetraalkylcyclobutane-1,3-diols

Growing community of inventors

Blountville, TN, United States of America

Lori Cooke Ensor