Processes for preparing amines
AssigneeHoechst Celanese Corporation
InventorsMichael T. Sheehan, James R. Sounik, Bret F. Hann, William W. Wilkison, III
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Abstract
Amines endowed with chain extension activity for formulations such as polyureas and polyurethanes are disclosed, which have the general formula: ##STR1## wherein n is 0-1000; R.sub.1 .dbd.R.sub.2, and R.sub.1 and R.sub.2 are from the group --CH.sub.2 --CH.sub.2 --; --CH.sub.2 --C(CH.sub.3)H--; and --C(CH.sub.3)H--CH.sub.2 --; and R.sub.3 and R.sub.4 are each independently selected from the group consisting of H, --CH.sub.3, --CH.sub.2 CH.sub.3, --CH.sub.2 OH, and --CH.sub.2 --CH.sub.2 --OH; and the diasteromeric salts thereof.
Claims13
A process for preparing amino compounds having the structural formula:
- ##STR6## wherein n is 0-1000;
- R.sub.1 equals R.sub.2, and R.sub.1 and R.sub.2 are from the group --CH.sub.2 --CH.sub.2 --;
- --CH.sub.2 --C(CH.sub.3)H--;
- and --C(CH.sub.3)H--CH.sub.2 --;
- and R.sub.3 and R.sub.4 are each independently selected from the group consisting of H, --CH.sub.3, --CH.sub.2 CH.sub.3, --CH.sub.2 OH, and --CH.sub.2 --CH.sub.2 --OH, which comprises the steps of (a) reacting an alkali metal hydroxide with 4-hydroxyacetophenone to form the alkali metal salt of said 4-hydroxyacetophenone, (b) reacting the alkali metal salt of 4-hydroxyacetophenone with an oxide material selected from the group consisting of ethylene oxide and propylene oxide to form an oxylated material, and then, (c) subjecting the oxylated material to reductive amination, under suitable conditions of temperature from about 50.degree. C. to about 150.degree. C. and pressure from about 300 psi to about 600 psi in order to form the amino compounds covered by the structural formula (I) set forth above.
Dependencies are inferred from the claim text.