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:
Jul. 11, 1989
Filed:
Jul. 28, 1988
Applicant:
Inventors:
Michael K Lowery, Pittsburgh, PA (US);
Richard E Keegan, McMurray, PA (US);
Mark A Koshute, Beaver, PA (US);
Assignee:
Mobay Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524722 ; 524724 ; 524729 ; 524762 ; 524773 ; 525424 ; 525440 ; 525452 ;
Abstract
The present invention relates to a process for the production of stable dispersions of polyureas and/or polyhydrazodicarbonamides in a hydroxyl-group-containing material by reacting an organic di- or polyisocyanate with a composition selected from the group consisting of polyamines containing primary and/or secondary amine groups, hydrazines, hydrazides, and mixtures thereof, in said hydroxyl-group containing material, in the presence of a dispersion stabilizing compound.