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:
Feb. 19, 1991
Filed:
Sep. 13, 1989
Applicant:
Inventors:
Robert F Harris, Midland, MI (US);
Michael R Savina, Auburn, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521137 ; 524377 ; 524762 ; 525459 ; 528 76 ; 528 80 ; 528 83 ; 528332 ; 528336 ; 528390 ;
Abstract
This invention relates to a composition comprising a particulate polymer dispersed in a continuous phase and a process for preparing the particulate polymer. The particulate polymer is characterized in that it is prepared by contacting a polyamine with a carbonyl-containing compound. The particulate polymer dispersions can be used for preparing reinforced polymer matrices, especially where the matrix comprises urethane and/or urea linkages. The invention allows for the preparation of a particulate polymer without using organic polyisocyanate.