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:
Jan. 21, 1997
Filed:
Sep. 07, 1995
Applicant:
Inventors:
Sivaram Krishnan, Pittsburgh, PA (US);
James B Johnson, Washington, PA (US);
Robson Mafoti, Temple, TX (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C07C / ;
U.S. Cl.
CPC ...
524308 ; 524311 ; 524312 ; 524313 ; 524314 ; 524315 ; 524317 ; 524245 ; 524248 ; 524250 ; 524600 ;
Abstract
A thermoplastic molding composition having improved release properties is disclosed. The composition contains a polycarbonate resin and a mold release agent which is an ester conforming structurally to ##STR1## where R is a member selected from the group consisting of glyceryl, trimethylol propyl and pentaerythrityl radicals, m is 2 to 4, R' is a C.sub.8-20 hydrocarbon radical having a pendant alkyl group, and R' is the esterification residue of a C.sub.1-24 aliphatic or an aromatic carboxylic acid.