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US 4,293,461 AGranted
Unsaturated melamine condensates
AssigneeMonsanto Company
InventorsWilliam F. Strazik, John R. LeBlanc, J. Owen Santer
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AssigneeMonsanto Company
InventorsWilliam F. Strazik, John R. LeBlanc, J. Owen Santer
Estimating the term…
An unsaturated condensate of a methylolmelamine, an acrylamide, an unsaturated fatty acid amide and optionally a C.sub.1 to C.sub.10 alcohol, wherein the methylolmelamine has at least about 5 methylol groups per melamine ring, wherein substantially all the methylol groups are condensed with acrylamide, unsaturated fatty acid amide or alcohol, wherein the number of acrylamide moieties of the condensate is in the range of about 1 to about 4 per melamine ring and the number of unsaturated fatty acid amide moieties is in the range of about 0.5 to about 2 per melamine ring and wherein the ratio of acrylamide moieties to unsaturated fatty acid amide moieties is in the range of about 1:1 to about 3:1. The unsaturated condensates are used in high solids unsaturated coating systems containing unsaturated oil-modified resins.
An unsaturated condensate of a methylolmelamine, an acrylamide, an ethylenically unsaturated fatty acid amide and a C.sub.1 to C.sub.10 alcohol wherein the methylolmelamine has at least about 5 methylol groups per melamine ring, wherein substantially all the methylol groups are condensed with the acrylamide, the unsaturated fatty acid amide or the alcohol, wherein the number of the acrylamide moieties of the condensate is in the range of about 1 to about 4 per melamine ring and the number of unsaturated fatty acid amide moieties is in the range of about 0.5 to about 2 per melamine ring, wherein the ratio of the acrylamide moieties to unsaturated fatty acid amide moieties is in the range of about 1:1 to about 3:1 and wherein the unsaturated fatty acid amide is an amide of ammonia or methylamine and an ethylenically unsaturated fatty acid containing from 4 to 32 carbon atoms and at least one allylic hydrogen atom per fatty acid moiety.
An unsaturated condensate of a methylolmelamine, acrylamide, an ethylenically unsaturated fatty acid amide and a C.sub.1 to C.sub.4 alcohol, wherein the methylolmelamine has at least about 5 methylol groups per melamine ring, wherein substantially all the methylol groups are condensed with acrylamide, the unsaturated fatty acid amide or the alcohol, wherein the number of acrylamide moieties of the condensate is in the range of about 1 to about 3 per melamine ring, and the number of unsaturated fatty acid amide moieties is in the range of about 0.75 to about 1.5 per melamine ring, wherein the ratio of acrylamide moieties to unsaturated fatty acid amide moieties is in the range of about 1:1 to about 3:1, and wherein the amide is a primary amide of an ethylenically unsaturated fatty acid containing from 10 to 20 carbon atoms and at least one allylic hydrogen atom per fatty acid moiety.
A process for the preparation of an unsaturated condensate which comprises condensing an alkoxymethylmelamine with an acrylamide and an ethylenically unsaturated fatty acid amide under acid conditions and in the presence of an oxidation and polymerization inhibiting quantity of an inhibitor until an amount of alcohol equivalent to the acrylamide and the unsaturated fatty acid amide is evolved, wherein the alkoxymethylmelamine has a combined ratio of formaldehyde to melamine in the range of about 5:1 to about 6:1 and a combined ratio of alcohol to melamine in the range of about 4.7 to about 6.0 moles per mole of melamine, wherein the mole ratio of the acrylamide to the alkoxymethylmelamine is in the range of about 1:1 to about 4:1, wherein the mole ratio of the unsaturated fatty acid amide to the alkoxymethylmelamine is in the range of about 0.5:1 to about 2:1, wherein the mole ratio of the acrylamide to the unsaturated fatty acid amide is in the range of about 1:1 to about 3:1 and wherein the unsaturated fatty acid amide is an amide of ammonia or methylamine and an unsaturated fatty acid containing from 4 to 32 carbon atoms and at least one allylic hydrogen atom per fatty acid moiety.
Dependencies are inferred from the claim text.