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US 3,937,612 AGranted
Dialkylphosphonoacetylurea compounds and processes for preparation and use for flameproofing
AssigneeHenkel & Cie G.m.b.H.
InventorsJohann Schwarzer, Peter Meins, Kurt Voparil
Life of this patent
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Abstract
Dialkylphosphonoacetylurea compounds which contain hydroxymethyl groups or alkoxymethyl groups and their preparation, as well as their use for the flameproofing of cellulose-containing materials.
Claims8
A compound having the formula ##EQU14## wherein R.sub.1 and R.sub.2 are each the same alkyl having 1 to 4 carbon atoms,
- R.sub.4, r.sub.5 and R.sub.6 are each selected from the group consisting of alkyl having 1 to 4 carbon atoms, hydroxymethyl and alkoxymethyl having 2 to 5 carbon atoms,
- with the proviso that at least one of R.sub.4, R.sub.5 and R.sub.6 is selected from the group consisting of hydroxymethyl and alkoxymethyl having 2 to 5 carbon atoms, and
- wherein R.sub.4 and R.sub.5 can together form an alkylene chain having 2 to 3 carbon atoms.
Dependencies are inferred from the claim text.