Polymers and copolymers based on alkenoyl-oxybenzylidene-malonic esters as UV-absorbers and polymers stabilized therewith

US3943094A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Dieter Margotte
• Burkhard Lachmann · Rotterdam, NL
• Hugo Vernaleken · Walsrode, DE
• Hans Rudolph · Krefeld, DE
• Wolfgang Cohnen · Leverkusen, DE

Key dates

• Filing date: Jan 10, 1975
• Grant date: Mar 9, 1976
• Expiry date: Jan 10, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L101/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Homopolymers and copolymers based on alkenoyloxybenzylidene-malonic esters of the formula ##SPC1## Where PA1 R.sup.1 is hydrogen or C.sub.1 to C.sub.4 -alkyl; PA1 R.sup.2 is C.sub.1 to C.sub.12 -alkyl or cycloalkyl and PA1 R.sup.3 is hydrogen, C.sub.1 to C.sub.8 -alkyl, C.sub.1 to C.sub.8 -alkoxy or halogen, and plastics, i.e., polycarbonates, stabilized therewith.