US 3,941,850 A · .alpha.,.alpha.,.alpha.',.alpha.'-TETRAKIS(4-HYDROXY-3,5-DISUBSTITUTED PHENYL)XYLENE

Abstract

A new series of compounds defined broadly as .alpha.,.alpha.,.alpha.',.alpha.'-tetrakis(4-hydroxy-3,5-disubstituted phenyl)-xylenes, which are useful as antioxidants for organic materials normally subject to oxidative deterioration, is disclosed.

Claims2

Dependent claims

.alpha., .alpha., .alpha.', .alpha.',-tetrakis (4-hydroxy-3,5-dibenzylphenyl) p-xylene.

Dependencies are inferred from the claim text.

Facts

Application

05/451,456Filed 15 Mar 1974 · division

Priority

12 May 1972

Granted

2 Mar 1976

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

C07C 37/20
By reactions increasing the number of carbon atoms: using aldehydes or ketones
C07C 39/15
Polycyclic with no unsaturation outside the aromatic rings: with all hydroxy groups on non-condensed rings , e.g. phenylphenol
C08K 5/13
Oxygen-containing compounds: phenols; Phenolates
C09K 15/08
Containing oxygen: containing a phenol or quinone moiety

.alpha.,.alpha.,.alpha.',.alpha.'-TETRAKIS(4-HYDROXY-3,5-DISUBSTITUTED PHENYL)XYLENE

Life of this patent

Abstract

Claims2

.alpha.,.alpha.,.alpha.',.alpha.'-TETRAKIS(4-HYDROXY-3,5-DISUBSTITUTED PHENYL)XYLENE

Life of this patent

Abstract

Claims2