Process for hydrochlorination of multihydroxylated aliphatic hydrocarbons
AssigneeDow Global Technologies LLC
InventorsTina L. Arrowood, William J. Kruper, Jr., John R. Briggs
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Abstract
A process for producing a chlorohydrin, an ester of a chlorohydrin, or a mixture thereof including the steps of contacting, in a hydrochlorination reactor, a multihydroxylated aliphatic hydrocarbon, an ester of a multihydroxylated aliphatic hydrocarbon, or a mixture thereof with a source of a hydrogen chloride, in the presence of a hydrophobic or extractable carboxylic acid catalyst is provided.
Claims14
A process for producing a chlorohydrin, an ester of a chlorohydrin, or a mixture thereof comprising the steps of:
- (a) contacting, in a hydrochlorination reactor, a multihydroxylated aliphatic hydrocarbon, a multihydroxylated aliphatic hydrocarbon ester, or a mixture thereof with a source of hydrogen chloride, in the presence of a hydrophobic carboxylic acid catalyst to produce a first product stream comprising chlorohydrins, hydrophobic chlorohydrin esters, or a mixture thereof;
- (b) phase separating the first product stream into a non-polar hydrophobic liquid stream and a polar non-hydrophobic liquid stream, wherein the polar non-hydrophobic liquid stream comprises water and hydrogen chloride and wherein the non-polar hydrophobic liquid stream comprises the non-polar hydrophobic chlorohydrin esters, and the non-polar hydrophobic carboxylic acid catalyst;
- and
- (c) decanting the non-polar hydrophobic liquid stream from the polar non-hydrophobic liquid stream after the phase separating step (b).
A process for producing a chlorohydrin, an ester of a chlorohydrin, or a mixture thereof comprising:
- (A) contacting, in a hydrochlorination reactor, a multihydroxylated aliphatic hydrocarbon, a multihydroxylated aliphatic hydrocarbon ester, or a mixture thereof with a source of hydrogen chloride, in the presence of an extractable carboxylic acid catalyst to produce a reaction solution containing an extractable product stream comprising chlorohydrins, chlorohydrin esters, or a mixture thereof;
- (B)adding an extraction medium to the extractable product stream;
- (C) extracting into the extraction medium the chlorohydrins, chlorohydrin esters, or mixture thereof;
- (D) phase separating the extraction medium from the reaction solution;
- (E) decanting the extraction medium containing the chlorohydrins, chlorohydrin esters, or mixture thereof;
- and
- (F) treating the decanted extraction medium by ne or more of the following treatments:
- (i) adding a base to the extraction medium to form an epoxide;
- (ii) hydrolyzing the extraction medium to liberate chlorohydrins therefrom;
- or
- (iii) adding an alcohol or mixture of alcohols to the extraction medium to form transesters.
Dependencies are inferred from the claim text.