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:
Oct. 24, 1995
Filed:
Oct. 27, 1993
Elliot Bergman, Valdosta, GA (US);
Griffin Corporation, Valdosta, GA (US);
Abstract
Pendimethalin microencapsulated in a microcapsule comprised of a water-soluble film forming polymer. The present invention also includes a method of microencapsulating low-melting agriculturally active materials, such as pendimethalin. The microencapsulation process comprises the steps of heating pendimethalin to a molten state. The molten pendimethalin is then combined with an aqueous solution of a water-soluble, film-forming polymer at a temperature sufficient to maintain the pendimethalin in its molten state. The pendimethalin is then emulsified in the aqueous solution so that the pendimethalin has a primary particle size of between approximately 0.1 and 10 microns. The resulting dispersion or emulsion is then spray dried at a temperature between approximately 50.degree. C. and 220.degree. C. so as to microencapsulate the pendimethalin in the polymer. Compounds for promoting the rapid solidification of the pendimethalin am also disclosed.