Method for modifying products or half-stuffs from molding materials consisting of mixtures of thermoplastic synthetic materials

US6251968A · kind A · utility

Assignee

• Wolff Walsrode AG · DE

Inventors

• Ralf Schledjewski · Walsrode, DE
• Dirk Schultze · Bad Fallingbostel, DE
• Gunter Weber · Linden, DE
• Rainhard Koch · Neunburg vorm Wald, DE

Key dates

• Filing date: Aug 16, 1999
• Grant date: Jun 26, 2001
• Expiry date: Aug 16, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2201/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a method for modifying articles and/or semi-finished products made from polymer resin moulding compositions, wherein said articles and/or semi-finished products, which substantially consist of moulding compositions comprising mixtures of thermoplastic polymers where exhibit good biodegradability and thermoplastic polymers which exhibit poor biodegradability, are subjected to biodegradation.