Microcapsules and method for their production

Details Microcapsules and method for their production Microcapsules and method for their production

1986-04-08

1988-05-24

Lovering, Richard D.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

71 3, 71 6402, 71 6413, 424418, 424419, 424485, 424488, 42721333, 42840224, 514965, A01N 2510, A01N 2528, B01J 1302

Patent

active

047465131

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: 3074845 (1963-01-01), Geary
patent: 3257267 (1966-06-01), Hay
patent: 3384680 (1968-05-01), Lussow
patent: 3909444 (1975-09-01), Anerson 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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