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. 27, 1989
Filed:
Feb. 09, 1988
Applicant:
Inventors:
Andrew B Auerbach, Livingston, NJ (US);
James L Paul, Summit, NJ (US);
K M Natarajan, New Brunswick, NJ (US);
Assignee:
Hoechst Celanese Corporation, Chatham, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08L / ;
U.S. Cl.
CPC ...
524100 ; 524538 ; 524542 ;
Abstract
An oxymethylene polymer composition which exhibits a reduced tendency to form mold deposits upon molding, reduced tendency to discolor under thermal stress and low extractable formaldehyde levels is provided by utilizing as a stabilizer a major amount of superpolyamide and a minor amount of a cyclic amidine compound of the formula: ##STR1## wherein R is phenyl, polynuclear aromatic, heterocyclic, cycloaliphatic and aliphatic containing at least 6 carbon atoms, as well as substituted derivatives of the listed substituents.