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US 3,944,632 AGranted
Phosphoric acid anilides
AssigneeCiba-Geigy Corporation
InventorsKurt Schwarzenbach, Heimo Brunetti
Life of this patent
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Abstract
New processes for the manufacture of alkylated phosphoric acid 4-hydroxyanilides. The compounds, some of which are new, can be used as stabilisers for organic material.
Claims3
A compound of the formula Ia ##SPC16##
- in which R.sub.1 and R.sub.2 independently of one another are a straight-chain or branched alkyl group of 1-5 carbon atoms or cycloalkyl of 6-8 carbon atoms, R.sub.3 and R.sub.3 are hydrogen and R.sub.4 is a straight-chain or branched alkyl group of 1-8 carbon atoms or benzyl.
Dependencies are inferred from the claim text.