The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 2006
Filed:
Jun. 18, 2001
Alfred Eitel, St. Johann, AT;
Klemens Kohlgrüber, Kürten, DE;
Frank Weyrich, Haan, DE;
Peter Rudolph, Erftstadt, DE;
Hans-jürgen Thiem, Dormagen, DE;
Michael König, Shanghai, CN;
Ricarda Nothelle, Shanghai, CN;
Helmut Meyer, Odenthal, DE;
Alfred Eitel, St. Johann, AT;
Klemens Kohlgrüber, Kürten, DE;
Frank Weyrich, Haan, DE;
Peter Rudolph, Erftstadt, DE;
Hans-Jürgen Thiem, Dormagen, DE;
Michael König, Shanghai, CN;
Ricarda Nothelle, Shanghai, CN;
Helmut Meyer, Odenthal, DE;
Bayer Aktiengesellschaft, Leverkusen, DE;
Abstract
Rubber-free copolymers of unsaturated monomers selected from the group comprising styrenes and vinyl cyanides are disclosed. The copolymers that contain 65 to 80 wt. %, of styrene and 20 to 35 wt. % of acrylonitrile are characterized in their low content of residual monomers and improved physical properties. Also disclosed are a process and a device for the preparation of these copolymers.