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:
Jun. 08, 1999
Filed:
Apr. 24, 1998
Applicant:
Inventors:
Allen R Padwa, Worcester, MA (US);
Venkatarayaloo Janarthanan, Holyoke, MA (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
525 67 ; 525 71 ; 525 73 ; 525 74 ; 525 78 ; 525 80 ; 525 84 ;
Abstract
A thermoplastic molding composition containing a blend of polycarbonate, vinyl copolymer, such as SAN, and a graft polymer, such as ABS is disclosed. The invention resides in the finding that the incorporation of a compatibilizing agent which comprises a polymeric resin having a number average molecular weight of at least about 21,000 and which is miscible with the grafted phase of the graft polymer and which contains secondary amine reactive groups in its structure yields stable compositions having improved mechanical properties especially at low temperatures.