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:
Aug. 06, 1991
Filed:
Apr. 23, 1990
Applicant:
Inventor:
Robert L Davis, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564440 ;
Abstract
Novel mixtures of aromatic diamines which are useful as chain extenders for urethane and urea polymers are compounds corresponding to the formula: ##STR1## wherein two of the R, R', and R' substituents are alkyl groups containing 1-6 carbons and the other substituent is a hydrocarbylthio group containing 1-6 carbons.