Use of mixtures of polymethyl methacrylate and styrene-acrylonitrile copolymers for the production of laser-inscribed moldings

US6020106A · kind A · utility

Assignee

• BASF SE

Inventors

• Graham Edmund Mc Kee · Neustadt, DE
• Martin Welz · Bad Dürkheim, DE
• Andreas Deckers · Flomborn, DE
• Daniel Wagner · Bad Dürkheim, DE
• Paul Otto Damm · Bischofswerda, DE
• Hans-Josef Oslowski · Munster, DE

Key dates

• Filing date: Dec 4, 1996
• Grant date: Feb 1, 2000
• Expiry date: Dec 4, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31935
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Transparent molded articles having a high-contrast laser inscription thereon are produced from a polymer mixture consisting of PA0 A) from 40 to 99% by weight of a polymer of an alkyl ester of (meth)acrylic acid, PA0 B) from 1 to 50% by weight of a copolymer of styrene and acrylonitrile having an acrylonitrile content of from 8 to 30% by weight, PA0 C) from 0 to 50% by weight of rubber particles, and PA0 D) from 0 to 20% by weight of additives and processing auxiliaries, by preparing a transparent molded article from the polymer mixture, and exposing the transparent molded article to laser radiation.