Diphenylamine age resisters for rubber

US4633016A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Josef Buysch · Krefeld, DE
• Josef Witt · Leverkusen, DE
• Zsolt Szentivanyi · Leverkusen, DE

Key dates

• Filing date: Aug 6, 1985
• Grant date: Dec 30, 1986
• Expiry date: Aug 6, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C323/44
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds corresponding to the general formula ##STR1## wherein R.sup.3 represents H, CH.sub.3 PA0 R.sup.4 represents H, C.sub.1-12 alkyl, C.sub.1-4 alkoxy, C.sub.1-12 alkylamino, C.sub.7-8 aralkylamino, arylamino, or C.sub.7-20 aralkyl, PA0 A represents a two-bonded group having the structure ##STR2## X may represent a single bond or --CO-- if it is attached to a carbon atom but only --CO-- if it is attached to a hetero atom, PA0 R.sup.1 represents R.sup.2, H or C.sub.1-4 alkyl, PA0 m represents 1 or 2 and PA0 n represents an integer from 1 to 12 are suitable as age resisters which can be built into polymers, in particular nitrile rubber.