Plant protecting and regulating compositions – Plant growth regulating compositions
Patent
1992-11-12
1994-05-31
Robinson, Allen J.
Plant protecting and regulating compositions
Plant growth regulating compositions
504347, 71DIG1, A01N 2528, A01N 3308
Patent
active
053170040
ABSTRACT:
Agriculturally active materials, such as pesticides, herbicides and the like and a process for microencapsulating said materials. The present invention includes trifluralin having a polymorphic form characterized by a yellow color and a melting point of approximately 41.degree.-43.degree. C. The present invention also includes a method of using the yellow polymorphic form of trifluralin as a herbicide. In addition, the present invention includes a method of microencapsulating low-melting agriculturally active materials, such as trifluralin. The microencapsulation process comprises the steps of heating a low-melting, water-immiscible, agriculturally active material to a molten state. The molten active material is then combined with an aqueous solution of a water-soluble, film-forming polymer at a temperature sufficient to maintain the active material in its molten state. The active material is then dispersed or emulsified in the aqueous solution so that the active material 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. and 220.degree. C. so as to microencapsulate the active material in the polymer. Compounds for promoting the rapid solidification of the active material are also disclosed.
REFERENCES:
patent: 3257190 (1966-06-01), Soper
patent: 4150969 (1979-04-01), Dudkowski
Bergman Elliot
Hoff, Jr. Edwin F.
LeFiles James H.
McKinney Larry J.
Misselbrook John
Clardy S. Mark
Griffin Corporation
Robinson Allen J.
LandOfFree
Microencapsulated yellow polymorphic form of trifluralin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microencapsulated yellow polymorphic form of trifluralin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microencapsulated yellow polymorphic form of trifluralin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1628169