Thermoplastic molding materials having high transparency prepared from compatible polymer alloys

US5612417A · kind A · utility

Assignee

• Roehm GmbH Chemische Fabrik · DE

Inventors

• Thomas Rhein · Stadecken-Elsheim, DE
• Michael Wicker · Seeheim-Jugenheim, DE
• Mona Rueppel · Weener, DE
• Gerald Dietrich · Darmstadt, DE
• Ernst Mohr · Murten, CH

Key dates

• Filing date: Dec 7, 1995
• Grant date: Mar 18, 1997
• Expiry date: Dec 7, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L33/062
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A thermoplastic polymethacrylate molding material with a high degree of thermal dimensional stability, a high degree of transparency, a high degree of flowability and a high degree of resistance against water, monomeric methylmethacrylate, mixtures consisting of ethanol and water, as well as fuel, wherein the molding material is a compatible mixture of 1 to 99 wt % of a copolymer P, made from (p1) 30 to 70 wt % styrene and/or .alpha.-methylstyrene, (p2) 29 to 70 wt % (C.sub.1 -C.sub.6 -alkyl)methacrylate, and (p3) 1 to 20 wt % acrylic acid and/or methacrylic acid, the sum of (p1), (p2), and (p3) adding up to 100 wt %, and 99 to 1 wt.-parts of a polymethylmethacrylate polymer PM, made of (pm1) 80 to 100 wt % methylmethacrylate, as well as (pm2) 0 to 20 wt % monomers which can be copolymerized with methylmethacrylate.