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:
Dec. 21, 1999
Filed:
Dec. 24, 1997
Applicant:
Inventors:
Rick L Adkins, New Martinsville, WV (US);
Steven L Schilling, Pittsburgh, PA (US);
Keith J Headley, Paden City, WV (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
25240062 ; 252401 ; 564437 ;
Abstract
This invention relates to stable aromatic amine compositions. These compositions comprise a) a compound selected from the group consisting of alkali metal salts of sulfur compounds, hydrates thereof and aldehydes thereof, aluminum hydrides, borates and boron compounds; and b) an aromatic amine. This invention also relates to a process for stabilizing the color of aromatic amines, and to the production of polyether polyols from these stable aromatic amine compositions.