Patent ID: 6090399
Filing Date: 2000-07-18
Classification: A01N,C09D

Abstract:
A controlled release composition comprising one or more biologically active compounds incorporated into a metal oxide glass having a porous matrix, wherein:(a) the biologicaillty active compound is selected from the group consisting of microbicide, marine antifouling agent, and agricultural pesticide; and(b) the metal oxide glass is prepared by polymerizing one or more metal alkoxide monomers of formula (I)(R.sup.2).sub.n M.sub.1.sup.+m (OR.sup.1).sub.3 (I)optionally in the presence of one or more metal alkoxide monomers of formula (II)(R.sup.5).sub.y R.sup.4 R.sup.3 M.sub.2.sup.30 x OR.sup.1 (II)wherein:M.sub.1 and M.sub.2 are independently selected from Silicon, aluminum, zirconium, titanium, tin, vanadium, and iron; R.sup.1 =(C.sub.1-4),ailyl; R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently selected from OR.sup.1, (C.sub.1-12)alkyl, substituted (C.sub.1-12)alkyl, (C.sub.2-10)alkenyl, halosubstitutod (C.sub.2-10)atlkenyl, (C.sub.3-10)alkyiiyl, halosubstituted (C.sub.3-10)alkynyl, phenyl, substituted phenyl, (C.sub.7-10)aralkyl; m and x are independently 3 or 4; n=m-3; and y=x-3;with the proviso that at least one of R.sup.2, R.sup.3, or R.sup.5 must be present and is other than OR.sup.1 ; andwith the proviso that when the biologically active compound is an agricultural pesticide, at least one metal alkoxide monomer of formula (II) is present where R.sup.3 or R.sup.4 is not OR.sup.1.