Ortho cyclohexyl, para hydroxy aralkanoic acid esters and amide antioxidants

US4699939A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Ivan Orban · Basel, CH
• Hans-Rudolf Meier · Marly, CH
• Paul Dubs · Marly, CH
• Samuel Evans · Marly, CH
• Peter Hofmann · Goldkronach, DE

Key dates

• Filing date: Oct 8, 1986
• Grant date: Oct 13, 1987
• Expiry date: Oct 8, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Compounds of formula I ##STR1## wherein R.sub.1, R.sub.2 and A are essentially hydrocarbyl or substituted hydrocarbyl groups with at least one of R.sub.1 and R.sub.2 being cyclohexyl, n is 0, 1 or 2, m is an integer of 1 to 4 and X is oxygen or --N(R.sub.3)-- wherein R.sub.3 is hydrogen, C.sub.1 -C.sub.4 alkyl or phenyl.