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:
Nov. 15, 1994
Filed:
Mar. 31, 1993
Applicant:
Inventors:
Richard M Gerkin, Cross Lanes, WV (US);
Forest A Richey, Jr, Charleston, WV (US);
Assignee:
OSi Specialties Inc., Danbury, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 73 ; 528341 ; 528406 ; 540484 ; 540598 ; 540603 ; 540607 ; 540612 ; 544357 ; 544370 ; 544406 ; 5483127 ;
Abstract
Diamino ureas having the formula ##STR1## wherein each ring is saturated and includes 3-5 carbon atoms and n alkyl substituents R of 1-4 carbon atoms each and n for each ring is 1-4, a method of using these materials as chain extending agents in the manufacture of poly(urethane/urea)s or polyureas, and polymers having at least one constituent unit derived from such diamino ureas are claimed.