Microcapsules and methods for their preparation

Details Microcapsules and methods for their preparation Microcapsules and methods for their preparation

1988-05-17

1989-02-28

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Forms or conditioning

71 6412, 71902, 71904, 71 27, C05G 300, C05G 308, C05G 310

Patent

active

048082066

ABSTRACT:
Dump release microcapsules are formed of a water-reswellable gel having dispersed therein a sorbtive filler material having a median particle size of not more than 1 micron, such as fumed or precipitated silica. The filler material has an active substance absorbed therein and/or adsorbed thereon. The active material can be 2-chloro-6-(trichloromethyl) pyridine and the gel formed from crosslinked lignin or a lignosulphonate.

REFERENCES:
patent: 3257267 (1966-06-01), Hay
patent: 3384680 (1968-05-01), Lussow
patent: 3639306 (1972-02-01), Sternberg et al.
patent: 3909444 (1975-09-01), Anderson et al.
patent: 3954678 (1976-05-01), Marquisee
patent: 4244728 (1981-01-01), Delli Colli et al.
patent: 4244729 (1981-01-01), Delli Colli et al.
patent: 4277364 (1981-07-01), Shasha et al.

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