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. 10, 1984
Filed:
May. 06, 1982
Applicant:
Inventors:
Walter T Murphy, Cuyahoga Falls, OH (US);
Clifford D Guiley, Jr, Medina, OH (US);
Assignee:
The B. F. Goodrich Company, Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2604654 ; 560191 ; 560200 ;
Abstract
Hydroxyl terminated liquid polymers that are excessively active in reaction with organic diisocyanates may be deactivated by treating the hydroxyl terminated liquid polymer with phosphoric acid or sulfuric acid prior to reaction with the organic diisocyanate so that the hydroxyl terminated liquid polymer is adjusted to an acid number of at least about 6 but not greater than 12. The treated hydroxyl terminated liquid polymer can be used to prepare polyurethanes having improved low temperature properties flexibility and hydrolytic stability.