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:
Sep. 03, 1985
Filed:
Dec. 14, 1984
Applicant:
Inventors:
John E Dewhurst, Oakdale, PA (US);
Jeffrey F Dormish, Pittsburgh, PA (US);
Richard S Pantone, New Martinsville, WV (US);
Assignee:
Mobay Chemical Corporation, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ; 2604 / ;
Abstract
The present invention is directed to a process for the preparation of a stable, liquid adduct comprising reacting a mixture of 1,3-butane diol and neopentyl glycol with diphenylmethane diisocyanate at a temperature of from about 25.degree. C. to about 120.degree. C. in an amount such that said adduct has an isocyanate group content of from about 20 to about 30 percent by weight, and wherein the ratio of mole equivalents of 1,3-butane diol to mole equivalents of neopentyl glycol is from 0.05:0.95 to 0.95:0.05, with the further proviso that