Asymmetric microporous beads for controlled release

Details Asymmetric microporous beads for controlled release Asymmetric microporous beads for controlled release

1997-03-13

1999-03-30

Clardy, S. Mark

Plant protecting and regulating compositions

Plant growth regulating compositions

71 641, 71DIG1, 424419, 424501, 424502, 424409, 514963, 514964, A01N 2534, A61K 952

Patent

active

058889302

ABSTRACT:
A durable and sprayable controlled release bead of active ingredient in the pores of a polymeric micro-porous bead having an anisotropic pore structure of large pores in the interior and small pores at the surface, the gradation of pore sizes between the interior and the surface being continuous.

REFERENCES:
patent: 4191812 (1980-03-01), Chong
patent: 4515906 (1985-05-01), Friesen et al.
patent: 4670250 (1987-06-01), Baker
patent: 4690825 (1987-09-01), Won

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