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US 4,085,283 AGranted
Phosphonate-isocyanurates
AssigneeStamicarbon B.V.
InventorsMarinus J. A. M. Den Otter, Albert A. Van Geenen, Anne Te Nijenhuis
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Abstract
Flame retarding compounds are disclosed which are of the formula ##STR1## wherein X is a phosphonate derivative.
Claims7
A compound of the formula ##STR8## in which each of X.sub.1, X.sub.2 and X.sub.3 is hydrogen, halogen, alkyl of up to 6 carbon atoms, --Y--P (O) (OR) (OR') or --Y--OH
- wherein Y is alkylene or alkyl- or halogen-substituted alkylene of 1 to 6 carbon atoms;
- or polyoxyalkylene wherein each oxyalkylene unit contains 1 to 3 carbon atoms and wherein said polyoxyalkylene contains 2 to 4 of said units;
- wherein each of R and R' is phenyl, or (cyclo)alkyl of 1 to 6 carbon atoms, or such phenyl, alkyl or cycloalkyl containing one or more halogen substituents;
- and in which at least one of said X.sub.1, X.sub.2 or X.sub.3 is --Y--P (O) (OR) (OR').
1 more element
Dependencies are inferred from the claim text.