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AssigneeGeneral Electric Company
InventorVladimir M. Zakoshansky
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A method for the enhanced decomposition of cumene hydroperoxide by acidic catalyst to phenol and acetone which comprises decomposing cumene hydroperoxide in a non-isothermal manner in the presence of excess acetone whereby the molar ratio of acetone to phenol in a decomposition reactor is from about 1.1: 1 to 1.5:1. A method for the selectivity of the decomposition of dicumyl peroxide to alpha methylstyrene also phenol and acetone in the presence of an acidic catalyst which comprises carrying out the decomposition at a temperature of from about 80.degree. to 110.degree. C. A method for carrying out the decomposition of dicumyl peroxide with an acidic catalyst system which comprises performing such decomposition in the presence of the reaction product of (1) an amine with (2) an acidic material which can catalyze the decomposition of CHP. A method for preparing phenol and acetone from the decomposition of CHP with an acidic catalyst which comprises (a) decomposing CHP at a specific acidic catalyst concentration and temperature thereby forming a composition comprising phenol, acetone and dicumyl peroxide, (b) transferring dicumyl peroxide to a plug flow reactor wherein decomposition of dicumyl peroxide to phenol acetone and AMS occurs at a lower acidic catalyst concentration and a higher temperature than the catalyst concentration and temperature in step (a). A method for the decomposition of CHP and producing CHP decomposition products therefrom which comprises recycling the CHP decomposition products to a CHP feedstream in the quantity of from about 10-25 times the weight of the CHP feedstream.
An improved method for the decomposition of cumene hydroperoxide by acidic catalyst to phenol and acetone wherein the improvement comprises decomposing cumene hydroperoxide in a non-isothermal manner in the presence of excess acetone whereby the molar ratio of acetone to phenol in a decomposition reactor is from about 1.1:1 to 1.5:1 whereby the rate of decomposition of cumene hydroperoxide is reduced and the reaction is more controllable and more selective.
An improved method for the decomposition of dicumyl peroxide to alpha methylstyrene in the presence of an acidic catalyst wherein the improvement comprises carrying out the decomposition at a temperature of from about 80.degree. to 110.degree. C. whereby selectivity is enhanced.
An improved method for carrying out the decomposition of dicumyl peroxide with an acidic catalyst system wherein the improvement comprises performing such decomposition in the presence of the reaction product of (1) an acidic material which can catalyze the decomposition of cumene hydroperoxide with (2) an amine suitable for partially neutralizing the acidic materials whereby a weakly acid material is formed and the decomposition is better controlled.
A composition comprising cumene hydroperoxide, cumene, acidic catalyst for decomposition of cumene, dicumyl peroxide, dimethylbenzyl alcohol, phenol, and acetone wherein the acetone is in a molar ratio to phenol of from about 1.1:1 to 1.5:1.
A composition comprising cumene, acidic catalyst for decomposing cumene hydroperoxide, dicumyl peroxide, water, phenol, acetone and a reaction product of (1) an amine with (2) an acid which catalyzes the decomposition cumene hydroperoxide.
An improved method for preparing phenol and acetone from the decomposition of cumene hydroperoxide with an acidic catalyst wherein the improvement comprises (a) decomposing cumene hydroperoxide at a specific acidic catalyst concentration and temperature whereby a composition comprising phenol, acetone and dicumyl peroxide is formed, (b) transferring dicumyl peroxide to a plug flow reactor wherein decomposition of dicumyl peroxide to phenol, acetone and alphamethylstyrene occurs in a weaker acidic catalyst medium and a higher temperature than the catalyst concentration and temperature in step (a) whereby the dicumyl peroxide decomposition is better controlled.
An improved method for maintaining control of an acid catalyzed cumene hydroperoxide decomposition in a multiplicity of sequential reactors wherein the improvement comprises passing a portion of the outlet stream of the last sequential reactor into a reactor of plug flow design and a smaller size compared to the cumene hydroperoxide decomposition reactors wherein the delta T.degree.C. of the inlet temperature and the outlet temperature of said plug flow reactor is from about 4.degree. to 16.degree. C. whereby the smaller size reactor decomposes essentially all of the cumene hydroperoxide remaining in said portion of the outlet stream and provides an analytical indication of the completeness of the cumene hydroperoxide decomposition reaction and the reactors are thereby controlled.
An improved method for enhancing the decomposition of cumene hydroperoxide and producing cumene hydroperoxide decomposition products therefrom wherein the improvement comprises recycling the cumene hydroperoxide decomposition products to a cumene hydroperoxide feedstream in the quantity of from about 10-25 times the weight of the cumene hydroperoxide feedstream whereby selectivity is higher and safety of the process is improved.
An improved method for enhancing the decomposition of cumene hydroperoxide to phenol and acetone wherein the improvement comprises introducing additional water into the cumene hydroperoxide decomposition reactor.
A cumene hydroperoxide decomposition mass produced from the reaction of cumene hydroperoxide with an acid catalyst in a non-isothermal manner having an acetone to phenol mole ratio of about 1.1 to 1 to 1.5 to 1.
A method for the efficient generation of recycle acetone in a process which prepares phenol and acetone from cumene comprising
Dependencies are inferred from the claim text.