Process for the manufacture of a mixture of polycarbonates and styrene-containing polymers, use of the mixture and molded parts thereof

US4409363A · kind A · utility

Assignee

• BASF SE

Inventors

• Franz Brandstetter · Neustadt, DE
• Franz Haaf · Bad Dürkheim, DE

Key dates

• Filing date: Feb 18, 1982
• Grant date: Oct 11, 1983
• Expiry date: Feb 18, 2002

Classification

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

Abstract

The invention relates to a process for the manufacture of a mixture of a polycarbonate and a styrene-containing polymer whereby the polycarbonate present in solution is initially brought into contact with a precipitating agent. The solvent and the precipitating agent are subsequently separated from the precipitated solid material to prepare a polycarbonate having residual moisture of more than 1 and less than 50 percent by weight relative to the polycarbonate, and where the resultant product with a residual moisture is mixed with the styrene-containing polymer at temperatures above the softening range of the components removing volatile components. The claimed mixtures are suitable for the manufacture of molded parts for cars, bottles and appliances.