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:
Aug. 15, 1989
Filed:
Apr. 10, 1987
Applicant:
Inventors:
Gerhart Schwab, Chillicothe, OH (US);
Richard L Brandon, Chillicothe, OH (US);
Assignee:
The Mead Corporation, Dayton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
42840222 ; 71DI / ; 264-43 ; 264-47 ; 424455 ; 424497 ; 424501 ; 503215 ; 525936 ; 5262195 ; 526909 ;
Abstract
The present invention provides a process for forming microcapsules having discrete capsule walls. An emulsion of an oily core material in a continuous aqueous phase containing a polymeric anionic emulsifier, a free radical addition polymerizable cationic monomer and a free-radical initiator is formed. Particles of the oily core material are enwrapped in a polymerizate of the cationic monomer produced by polymerization of the cationic monomer.