Eastman Chemical Company

Fastman Chemical Company

Jennifer Ellen McCusker-Orth

Brent Alan Tennant

Jerome Leonard Stavinoha, Jr

Zhufang Liu

Steven Thomas Perri

Philip Conrad Heidt

Anthony Dominick Messina

Scott Donald Barnicki

Jerry Lynn Miller

Joseph Franklin Knight

Michael Wayne Salyer

James Charles Ciula

The present disclosure relates to the production of a 2,2,4,4-tetraalkylcyclobutane-1,3-diol. In one embodiment, the present invention relates to the production of a 2,2,4,4-tetraalkylcyclobutane-1,3-diol by hydrogenation of a 2,2,4,4-tetraalkylcyclobutane-1,3-dione in the presence of a ruthenium-promoted cobalt-based catalyst.

Process for the preparation of a tetraalkylcyclobutane-1,3-diol using an ruthenium-promoted cobalt-based catalyst

The present disclosure relates to the production of 2,2,4,4-tetraalkylcyclobutane-1,3-diol. In one embodiment, the present invention relates to the production of 2,2,4,4-tetraalkylcyclobutane-1,3-diol by hydrogenation of 2,2,4,4-tetraalkylcyclobutane-1,3-dione in the presence of a promoted copper-based catalyst.

Process for the preparation of a tetraalkycyclobutane-1,3-diol using a promoted-copper catalyst

The present invention relates to the production of a 2,2,4,4-tetraalkylcyclobutane-1,3-diol. In one embodiment, the present invention relates to the production of a 2,2,4,4-tetraalkylcyclobutane-1,3-diol by hydrogenation of a 2,2,4,4-tetraalkylcyclobutane-1,3-dione in the presence of a promoted nickel-based catalyst.

Process for the preparation of a tetraalkylcyclobutane-1,3-diol using a promoted nickel-based catalyst

The present disclosure relates to the production of a 2,2,4,4-tetraalkylcyclobutane-1,3-diol. In one embodiment, the present invention relates to the production of a 2,2,4,4-tetraalkylcyclobutane-1,3-diol by hydrogenation of a 2,2,4,4-tetraalkylcyclobutane-1,3-dione in the presence of an iridium-promoted cobalt-based catalyst.

Process for the preparation of a tetraalkylcyclobutane-1,3-diol using an iridium-promoted cobalt-based catalyst

The present invention relates to the production of 2,2,4,4-tetramethylcyclobutane-1,3-diol. In one embodiment, the present invention relates to the production of 2,2,4,4-tetramethylcyclobutane-1,3-diol by hydrogenation of 2,2,4,4-tetramethylcyclobutane-1,3-dione in the presence of a cobalt-based catalyst.

Process for the preparation of tetraalkylcyclobutane-1,3-diol in the presence of a cobalt-based catalyst

Continuous single-step processes for producing higher molecular weight ketones are disclosed that involve a liquid-phase crossed condensation of an aldehyde with a ketone in the presence of a hydrogenation catalyst and a small amount of a catalyst comprising a concentrated hydroxide or alkoxide of an alkali-metal (from Group 1 or Group IA of the Periodic Table of the Elements) or alkali-earth metal (from Group 2, or Group IIA of the Periodic Table of the Elements), wherein the amount of water provided to the reaction mixture, or reaction zone, is relatively low, with respect to the total initial weight of the reaction mixture. The reaction may be carried out in the absence of solubilizing agents or phase transfer agents. The product mixture is largely free of by-products resulting from further condensation reactions of the desired ketone product or intermediates, and free of the self-condensation products of the reactant aldehyde, that are afterward difficult to remove from the reaction mixture.

Processes for the preparation of high molecular weight saturated ketones

Processes for producing higher molecular weight ketones are disclosed that include the steps of feeding an aldol catalyst solution, a lower molecular weight aldehyde, and a lower molecular weight ketone, through a reactor provided with a solid hydrogenation catalyst and hydrogen gas; recovering a liquid reactor effluent containing the higher molecular weight ketone as a reaction product; and recycling a portion of the recovered liquid reactor effluent back through the reactor.

Processes for the preparation of higher molecular weight ketones

Processes for producing &#x3b2;-hydroxy-ketones and &#x3b1;,&#x3b2;-unsaturated ketones are disclosed which comprise the crossed condensation of an aldehyde with a ketone in the presence of a hydroxide or alkoxide of alkali metal or an alkaline earth metal as catalyst. The products of the process, &#x3b2;-hydroxy-ketones and &#x3b1;,&#x3b2;-unsaturated ketones, are useful for the preparation of many commercially important products in the chemical process industries including solvents, drug intermediates, flavors and fragrances, other specialty chemical intermediates.

Processes for preparing &#x3b2;-hydroxy-ketones and &#x3b1;,&#x3b2;-unsaturated ketones

Disclosed is a process for a cyclohexanedimethanol by hydrogenation of a cyclohexane-dicarboxylate ester in the presence of a Raney metal catalyst doped with rhenium. The process is useful for the reparation of 1,4-cyclohexanedimethanol from dialkyl esters of 1,4-cyclohexanedicarboxylate or dialkyl terephthalates. When Raney nickel is used as the catalyst, the process produces CHDM having a high trans content.

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Kingsport, TN, United States of America

Jennifer Ellen McCusker-Orth