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. 05, 1980
Filed:
Feb. 08, 1979
Applicant:
Inventor:
Edward E Flagg, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07D / ;
U.S. Cl.
CPC ...
544193 ; 2604 / ; 2604 / ; 2604 / ; 2604 / ; 544221 ; 544222 ;
Abstract
A process is disclosed for the preparation of alkyl cyanates, alkyl isocyanurates, multifunctional alkyl cyanates, and oligomers of multifunctional alkyl isocyanates by reacting cyanogen halide with the corresponding thallium(I) salt of an alkanol at reduced temperatures, optionally in the presence of an inert solvent. Subsequently, warming the resulting product to ambient temperature causes isomerization to the corresponding aliphatic isocyanate and ultimately oligomerization to form trialkyl isocyanurate or oligomers of multifunctional alkyl isocyanates.