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:
Apr. 19, 1983
Filed:
Mar. 03, 1981
Applicant:
Inventors:
Tad H Koch, Boulder, CO (US);
Barry J Swanson, Boulder, CO (US);
Assignee:
University Patents, Inc., Norwalk, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
548519 ; 2041 / ; 20415911 ; 2604 / ; 2604 / ; 2604 / ; 528 45 ; 528423 ;
Abstract
Subjecting 1,4-bis-[(pyrrolin-3-onyl)methylamino]-2-butyne to ultraviolet irradiation effects rearrangement in greater than 80% yield to 1,4-bis-[(isocyanatocycloprolpyl)methylamino]-2-butyne. The diisocyanate is useful in the synthesis of polyurethanes and polyureas and also for the in situ photochemical generation of a cross-linking agent for polyurethanes and structurally related polymers.