Tris(N-carbalkoxylaminomethyl)phosphine oxides and sulfides
AssigneeThe United States of America as represented by the Secretary of Agriculture
InventorArlen W. Frank
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Abstract
The title compounds, having the formula (RO.sub.2 CNHCH.sub.2).sub.3 PY where Y=oxygen or sulfur, are prepared by reacting a tris(N-carbalkoxylaminomethyl)phosphine, having the formula (RO.sub.2 CNHCH.sub.2).sub.3 P, with an oxidizing or sulfurizing agent. The products, after methylolation with formaldehyde, are useful as finishing agents for imparting flame retardant properties to cotton fabrics.
Claims2
A process for methylolating a tris(N-carbalkoxylaminomethyl)phosphine oxide which comprises reacting the substance with three or more molar equivalents of formaldehyde in aqueous solution in the presence of an acid catalyst;
- and recovering the product from the resulting reaction mixture.
Dependencies are inferred from the claim text.