Heterocyclicamides of hindered 3,5-dialkyl-4-hydroxybenzoic acid

Details Heterocyclicamides of hindered 3,5-dialkyl-4-hydroxybenzoic acid Heterocyclicamides of hindered 3,5-dialkyl-4-hydroxybenzoic acid

1974-12-30

1978-01-03

Czaja, Donald E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 458N, 260 458SN, 260268C, 26029377, 2603067R, 2603265E, 544173, C07D29518, C08K 534, C08K 535, C08K 547

Patent

active

040666140

ABSTRACT:
Compounds of the formula: ##STR1## WHEREIN R.sub.1 and R.sub.2 are each branch-chain alkyl of 3 to 8 carbon atoms and -Het is a nitrogen-containing heterocyclic moiety attached to the carbonyl carbon atom through a heterocyclic nitrogen are useful as light stabilizers in polyolefins. They may be prepared (a) by reacting the 3,5-dialkyl-4-hydroxybenzoyl chloride with the appropriate heterocyclic amine in the presence of an acid acceptor or (b) by reacting the corresponding benzoic acid with the appropriate heterocyclic amine in the presence of a carbodiimide as dehydrating agent.

REFERENCES:
patent: 2906728 (1959-09-01), Schweitzer
patent: 3022302 (1962-02-01), Martensson
patent: 3282939 (1966-11-01), Spivack et al.
patent: 3330859 (1967-07-01), Dexter et al.
patent: 3449419 (1969-06-01), Wechter
patent: 3573304 (1971-03-01), Eberle
Noller, "Chemistry of Organic Compounds", 1957, pp. 160, 249 and 252.

Affiliated with

Also associated with

Rating

Heterocyclicamides of hindered 3,5-dialkyl-4-hydroxybenzoic acid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heterocyclicamides of hindered 3,5-dialkyl-4-hydroxybenzoic acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heterocyclicamides of hindered 3,5-dialkyl-4-hydroxybenzoic acid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-280274