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. 19, 1986
Filed:
Aug. 13, 1985
Applicant:
Inventors:
Otto S Zamek, Schenectady, NY (US);
Richard J Stein, Schenectady, NY (US);
Assignee:
General Electric Company, Silicone Products Division, Waterford, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544193 ;
Abstract
There is provided a method for making blocked isocyanate trimers comprising (A) blocking at least one organic diisocyanate with at least one blocking compound, such as a monohydroxy compound and thereafter (B) heating the reaction product of step (A) in the presence of a catalyst having the general formula ##STR1## where each R is independently selected from hydrogen and lower alkyl radicals and R.sup.1 is an alkylene radical having up to about six carbon atoms; for an amount of time effective for forming blocked isocyanate trimers.