Method for producing beta hydroxy ethylene glycol ethers
AssigneeMonsanto Company
InventorRoger L. Kidwell
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Abstract
This invention relates to methods for rapidly producing beta hydroxy ethylene glycol ethers by reacting internal epoxyalkanes with mono or poly ethylene glycols in the presence of critical amounts of acidic catalysts under controlled temperature conditions.
Claims4
A method of making a beta hydroxy ethylene glycol represented by the formula ##EQU6## wherein x and y are integers from 0 to 16, the sum of x and y being from 8 to 16 and z is an integer from 1 to 5, said process comprising reacting an epoxyalkane represented by the formula ##EQU7## wherein x and y are whole numbers from 0 to 16, the sum of x and y being from 8 to 16 with a glycol represented by the formula
- HO(CH.sub.2 --CH.sub.2 O).sub.z H ##EQU8## wherein z is an integer from 1 to 5 in the presence of an acidic catalyst represented by the formula
- wherein R is selected from the group consisting of --OH, alkyl, alkyl--O--, and aryl, the molar ratio of glycol to epoxyalkane being at least 6:1, said catalyst being present in an amount of from 0.0025 equivalents to 0.015 equivalents per mole of epoxyalkane, the reaction being initiated at a temperature of at least 135.degree.C and raised to a temperature of at least 150.degree.C but not greater than 180.degree.C.
Dependencies are inferred from the claim text.