Ethanol- and substituted ethanolamides of hindered 3,5-dialkyl-4

Details Ethanol- and substituted ethanolamides of hindered 3,5-dialkyl-4 Ethanol- and substituted ethanolamides of hindered 3,5-dialkyl-4

1974-12-30

1976-11-16

Killos, Paul J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 4585A, 260 459NC, 260559R, C07C 978, C07C10326

Patent

active

039924343

ABSTRACT:
Compounds of the formula: ##SPC1##
Wherein R.sub. 1 and R.sub. 2 are each branch-chain alkyl of 3 to 8 carbon atoms, R.sub. 3 is --CH.sub.2 CH.sub.2 OZ wherein Z is hydrogen or ##SPC2##
And R.sub. 4 is hydrogen or R.sub. 3 are useful as light stabilizers in polyolefins. They may be prepared (a) by reacting the 3,5-di-alkyl-4-hydroxybenzoyl chloride with the appropriate amine in the presence of an acid acceptor or (b) by reacting the corresponding benzoic acid with the appropriate amine in the presence of a carbodiimide as dehydrating agent.

REFERENCES:
patent: 3027301 (1962-03-01), Freedman et al.
patent: 3432550 (1969-03-01), Garzin
patent: 3880910 (1975-04-01), Spivack
patent: 3907862 (1975-09-01), Dexter et al.

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