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US 4,049,647 AGranted
Bis piperidyl carboxylates
AssigneeCiba-Geigy Corporation
InventorsBrian Holt, Donald Richard Randell
Life of this patent
Estimating the term…
Abstract
New 1- and 4-substituted piperidines are stabilizers for organic material. They are produced by reacting corresponding 1-substituted piperidinols with acid chlorides or corresponding 4-substituted piperidines with a compound introducing into the 1-positon a residue.
Claims3
A compound having the formula:
- ##STR155## wherein R.sup.I and R.sup.II are the same or different and each is a straight or branched alkyl group, having from 1 to 4 carbon atoms, or R.sup.I or R.sup.II, together with the carbon atom to which they are attached form a cycloalkyl group having from 5 to 12 carbon atoms;
- Y is an alkyl group, having from 5 to 20 carbon atoms, alkenyl having from 7 to 9 carbon atoms, n is 2, R is cycloalkylene having from 1 to 20 carbon atoms, cycloalkylene having from 5 to 12 carbon atoms, arylene, having from 6 to 20 carbon atoms, vinylene propenylene, p-xylylene, the group -CH.sub.2 CH.sub.2 SCH.sub.2 CH.sub.2 - or R is absent;
- and a salt thereof selected from phosphate, carbonate, sulfate, chloride, acetate, stearate, maleate, citrate, tertrate, oxalate, benzoate and substituted carbamate.
Dependencies are inferred from the claim text.