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. 14, 1976
Filed:
Aug. 25, 1975
Applicant:
Inventors:
Michael J Van Eyck, Midland, MI (US);
Laurence I Peterson, Doylestown, PA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603097 ; 2602 / ; 2602 / ;
Abstract
Compounds of the formula ##STR1## wherein --R-- is di-, tri- or tetramethylene which may bear from 1 to 8 C.sub.1 -C.sub.3 alkyl substituents, and a process for their preparation wherein a reactant of the formula ##STR2## is contacted, at reaction temperature, with COCl.sub.2. For example, 2-imidazolidone is contacted with phosgene to form N,N'-bis(carbonyl chloride)-2-imidazolidone. The compounds may be condensed with polyols, polythiols or polyamines to form useful resins or pyrolyzed to give alkylene diisocyanates.