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:
Apr. 11, 1995
Filed:
Jun. 22, 1994
Applicant:
Inventors:
Sivaram Krishnan, Pittsburgh, PA (US);
James B Johnson, Washington, PA (US);
Susan H Bates, Heath, OH (US);
Edward M Anderson, Newark, OH (US);
Assignee:
Miles Inc., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524114 ; 524 88 ; 524 89 ; 524 90 ; 524109 ; 524401 ; 524407 ; 524420 ; 524424 ; 524427 ; 524435 ;
Abstract
A melt-stable, pigmented thermoplastic molding composition is disclosed. Accordingly, to the composition which contains polycarbonate resin and pigment there is imparted an improved level of melt stability upon the incorporation therewith of an additive amount of a melt stabilizer conforming to ##STR1## where R.sub.1, R.sub.2, R.sub.3 and n are defined. In an additional embodiment the invention relates to a color concentrate containing polycarbonate resin, up to 30% of a pigment and an effective amount of said stabilizer.