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:
May. 22, 1990
Filed:
May. 02, 1988
Applicant:
Inventors:
Charles F Kahle, II, Allison Park, PA (US);
Gregory J McCollum, Gibsonia, PA (US);
Craig A Wilson, Bakerstown, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C / ;
U.S. Cl.
CPC ...
564377 ;
Abstract
Alkyl primary amines, e.g., tertiary alkyl primary amines, are prepared by reaction of the corresponding alkyl primary isocyanates with an alkanolamine to form an intermediate area reaction product, followed by heating to decompose the urea reaction product and form the amine product. The amine product can be recovered in high yield by vacuum distillation.