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. 05, 1985
Filed:
Feb. 25, 1983
Applicant:
Inventor:
Joseph Simkin, Miami, FL (US);
Assignee:
Pennwalt Corporation, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01N / ; A61K / ; A61K / ; B01J / ;
U.S. Cl.
CPC ...
424 32 ; 264-47 ; 424 19 ; 42840221 ;
Abstract
A process for microencapsulating naturally-occurring pyrethrins with a polyamide-polyurea shell by interfacial condensation which includes slowly adding an amine reactant to an aqueous emulsion containing the pyrethrin, an isocyanate, and an acyl halide with the requirement that at least one of said isocyanate or said acyl halide is polyfunctional, to provide free flowing capsules having a polyamide-polyurea wall encapsulating the natural pyrethrin.