Processes for producing slow-release powders

Details Processes for producing slow-release powders Processes for producing slow-release powders

1991-01-04

1993-05-18

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

424501, 424502, 424409, 523102, 523122, 523300, 522 78, 522184, 522186, 522911, 522912, 5147726, A61K 914, A61K 746, A61K 4732, C08F 254

Patent

active

052119599

ABSTRACT:
A process for producing a slow-release powder which permit various active ingredients such as perfumes, insect control agents, rust inhibitors, mold inhibitors and antibacterial agents to be slowly released over a prolonged time, the process comprising the steps of mixing a long-chain compound with the ingredients, mixing the resulting mixture with urea, and exposing the resulting urea adduct to radiation.

REFERENCES:
patent: 4020156 (1977-04-01), Murray et al.
patent: 4252785 (1981-02-01), Isoldi
patent: 4404183 (1983-09-01), Kawata et al.
patent: 4411754 (1983-10-01), Kaetsu et al.
patent: 4652443 (1987-03-01), Yoshida et al.
patent: 5043161 (1991-08-01), Scarpelli et al.

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