Biodegradable sustained-release preparation, biodegradable phero

Details Biodegradable sustained-release preparation, biodegradable phero Biodegradable sustained-release preparation, biodegradable phero

1999-08-12

2000-12-12

Azpuru, Carlos A.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Implant or insert

424403, 424405, 424407, 424409, 5147723, A61F 202, A01N 2534, A01N 2508, A01N 2532, A61K 4732

Patent

active

06159489&

ABSTRACT:
Described are a biodegradable sustained-release preparation which comprises a mixture of 99 to 10 parts by weight of an aliphatic polyester and 1 to 90 parts by weight of a modifier for the regulation of sustained releasability of an active ingredient, and the active ingredient held by said mixture; a biodegradable pheromone dispenser, wherein an aliphatic polyester is used as a sustained release layer for a pheromone contained therein as a liquid phase, said aliphatic polyester having recurring units whose ratio (I/II) of (I) the number of the carbon atoms constituting the main chain and not relating to ester linkage to (II) the number of the carbon atoms constituting the ester linkage is 2 or larger; and a biodegradable pest controlling agent which is obtained by mixing and dispersing an active ingredient and a carrier for holding said active ingredient in a biodegradable aliphatic polyester or which comprises 2 to 60 wt. % of an active ingredient, 30 to 95 wt. % of a biodegradable aliphatic polyester and 2 to 50 wt. % of a carrier for holding the active ingredient.

REFERENCES:
patent: 5993843 (1999-11-01), Sakurada et al.

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