Synthesis of alkoxylated sucrose esters
OwnerJared John Schaeferinventor
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Abstract
A process for the preparation of an alkoxylated sucrose ester including the steps of: forming an initial reaction mixture of a sucrose ester and from about 0.01% to about 5% of a catalyst; and forming an initial reaction product by reacting the initial reaction mixture with an epoxide for a period of time in the range of from about 30 minutes to about 6 hours and at a temperature in the range of from about 80° C. to about 120° C.; wherein the epoxide and the sucrose ester are selected such that a mole ratio of epoxide groups to sucrose hydroxyls is from about 1 to about 100. Useful catalysts include sodium metals, potassium metals, sodium/potassium alloys, and mixtures thereof
Claims20
A process for the preparation of an alkoxylated sucrose ester, wherein the process comprises the steps of:
- a) forming an initial reaction mixture, wherein said initial reaction mixture comprises:
- i) a sucrose ester;
- and
- ii) from about 0.01% to about 5%, by weight of the initial reaction mixture, of a catalyst;
- and
- b) forming an initial reaction product by reacting the initial reaction mixture with an epoxide for a period of time in the range of from about 30 minutes to about 6 hours and at a temperature in the range of from about 80° C. to about 120° C.;
- wherein the epoxide and the sucrose ester are selected such that a mole ratio of epoxide groups to sucrose hydroxyls is from about 1 to about 100.
A process for the preparation of an alkoxylated sucrose ester, wherein the process comprises the steps of:
- a) forming an initial reaction mixture, wherein said initial reaction mixture comprises:
- i) from about 0.99% to about 99.99% of a sucrose ester;
- and
- ii) from about 0.01% to about 5% of a catalyst;
- and
- b) forming an initial reaction product by reacting the initial reaction mixture with an epoxide for a period of time in the range of from about 30 minutes to about 6 hours, and at a temperature in the range of from about 80° C. to about 120° C.;
- c) forming a purified reaction product by washing said initial reaction product with an aqueous washing solution at a temperature of from about 20° C. to about 100° C., gently stifling, and allowing the resulting two phases to separate;
- and then
- d) isolating the impurities from said purified reaction product;
- wherein the ratio of the epoxide to the sucrose ester is selected such that a mole ratio of epoxide groups per sucrose hydroxyls is from about 1 to about 50.
A process for the preparation of an alkoxylated sucrose ester, wherein the process comprises the steps of:
- a) forming an initial reaction mixture, wherein said initial reaction mixture comprises:
- i) a sucrose ester;
- ii) from about 0.01% to about 5% of a catalyst selected from sodium metals, potassium metals, sodium/potassium alloys, and mixtures thereof,
- b) forming an initial reaction product by reacting the initial reaction mixture in an atmosphere for a period of time in the range of from about 30 minutes to about 6 hours, and at a temperature in the range of from about 80° C. to about 120° C., wherein the atmosphere comprises:
- i) from about 0.1% to about 100%, by volume of the atmosphere of the epoxide;
- and
- ii) an inert gas;
- and
- c) forming a purified reaction product by sparging the initial reaction product with nitrogen for a time period of from about 1 minute to about 2 hours at a temperature of from about 20° C. to about 100° C.;
- wherein the ratio of the epoxide to the sucrose ester is selected such that a mole ratio of epoxide groups per sucrose hydroxyls is from about 1 to about 100.
Dependencies are inferred from the claim text.