Process for the manufacture of impact resistant modified polymers

US6239225A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Gisbert Michels · Leverkusen, DE
• Bernd Klinksiek · Bensberg, DE
• Otto Schmid · Leverkusen, DE
• Ralph Ostarek · Goldkronach, DE
• Richard Weider · Leverkusen, DE
• Raymond D. Burk · Wilbraham, US
• Joong In KIM · Uiwang-si, KR

Key dates

• Filing date: Jul 8, 1999
• Grant date: May 29, 2001
• Expiry date: Jul 8, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F279/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A continuous process for the manufacture of impact resistant polymers is disclosed. The process comprise polymerization of a reaction mixture containing vinylaromatic monomers in the presence of soluble rubber and entails shearing at least some of said mixture at a rate of more than 30000 1/s using a device having no rotating parts. The resulting product is characterized in its low gloss and improved impact properties.