Stable substituted acrylamides or methacrylamides
AssigneeTexaco Development Corporation
InventorsEdward C. Y. Nieh, Philip H. Moss
Life of this patent
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Abstract
Covers a new composition of matter comprising a stable N-(.omega.-monoalkylaminoalkyl) acrylamide or methacrylamide monomer characterized by the following structural formula: ##STR1## where R.sub.1 and R.sub.2 are hydrogen or methyl, R.sub.3 is isopropyl or t-butyl and n is 2 or 3, with the proviso that when R.sub.1 is hydrogen, R.sub.3 is t-butyl. Also covers a method of preparing said monomer by condensing one mole of an acrylic or methacrylic compound with two moles of an appropriate amine to form an intermediate substituted amide, followed by heating said intermediate to split off one mole of reactant diamine leaving the desired substituted aminoalkyl acrylamide or acrylamide monomer.
Claims11
A stable N-(.omega.-monoalkylaminoalkyl) acrylamide or methacrylamide monomer characterized by the following structural formula:
- ##STR11## where R.sub.1 and R.sub.2 are hydrogen or methyl, R.sub.3 is isopropyl or t-butyl and n is 2 or 3, with the proviso that when R.sub.1 is hydrogen, R.sub.3 is t-butyl.
A method of preparing a stable N-(.omega.-monoalkylaminoalkyl) acrylamide or methacrylamide monomer characterized by the following structural formula:
- ##STR12## where R.sub.1 and R.sub.2 are hydrogen or methyl, R.sub.3 is isopropyl or t-butyl and n is 2 or 3, with the proviso that when R.sub.1 is hydrogen, R.sub.3 is t-butyl;
- which comprises the steps of condensing one mole of an acrylic or methyacrylic compound having the structure:
- ##STR13## where R.sub.1 is hydrogen or methyl and X is selected from the group consisting of halo, OH, or OR.sub.4 where R.sub.4 is lower alkyl, with a diamine having the structure:
- R.sub.2 NHC.sub.n H.sub.2n NHR.sub.3
- where R.sub.2 is hydrogen or methyl, R.sub.3 is isopropyl or t-butyl and n is 2 or 3, with the proviso that where R.sub.1 is hydrogen, R.sub.3 is t-butyl, to provide an intermediate compound having the structure:
- ##STR14## where R.sub.1, R.sub.2, R.sub.3, and n have a significance as above defined, and heating said intermediate compound at a sufficient temperature to split off one mole of said diamine reactant to yield said N-(.omega.-monoalkylaminoalkyl) acrylamide or methacrylamide.
Dependencies are inferred from the claim text.