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:
Oct. 27, 1992
Filed:
Dec. 27, 1991
Applicant:
Inventors:
Burkhard Kohler, Krefeld, DE;
Klaus Horn, Krefeld, DE;
Wolfgang Ebert, Krefeld, DE;
Klaus Kircher, Leverkusen, DE;
Johann Piontek, Dormagen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ;
U.S. Cl.
CPC ...
521 79 ; 264 461 ; 264 53 ; 264 54 ; 521 97 ; 521 99 ; 521180 ;
Abstract
A process for the production of polycarbonate foam moldings is disclosed. Accordingly, a composition is prepared comprising mixing a thermoplastic polycarbonate resin and 0.01 to 1 mole-% of a transesterification catalyst and