Thermoplastic molding compounds based on mixtures of vinyl chloride polymers and block copolymers based on cyclic carbonates and lactones

US4912168A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Herbert Eichenauer · Dormagen, DE
• Edgar Leitz · Dormagen, DE
• Karl-Heinz Ott
• Lothar Meier · Sprockhövel, DE
• Maria Gartner · Bensberg, DE

Key dates

• Filing date: Mar 6, 1989
• Grant date: Mar 27, 1990
• Expiry date: Mar 6, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L69/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Transparent vinyl chloride polymer molding compounds containing a sequential copolymer having the following idealized formula EQU (A-X-B).sub.n (I) in which PA0 A=a polymer of a cyclic carbonate, PA0 B=a polymer of another cyclic ester and PA0 X=a middle segment containing both partial structures of A and B.