Controlled release pesticides

Details Controlled release pesticides Controlled release pesticides

1982-12-22

1985-01-29

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D25306

Patent

active

044967241

ABSTRACT:
Controlled release pesticide-polymers are prepared by reacting a polymer having a pendant group containing a reactive hydrogen with a chloroformamide derivative of a pesticide. In a preferred embodiment, metribuzin chloroformamide is prepared by reacting metribuzin with phosgene at a temperature of about 40.degree. C. The metribuzin chloroformamide is then reacted with cellulose to form a pesticide-polymer from which the metribuzin is released under use conditions by hydrolytic degradation of the carbamate bond attaching the metribuzin to the polymer.

REFERENCES:
Morrison and Boyd, Organic Chemistry, 2nd ed., pp. 926-927, (1966).
Fuson, Reactions of Organic Compounds, p. 337 (1964).

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