Controlled release formulating employing resilient microbeads

Details Controlled release formulating employing resilient microbeads Controlled release formulating employing resilient microbeads

1988-05-23

1989-10-10

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

424 78, 424 83, 521 64, A61K 914, C08J 928

Patent

active

048730912

ABSTRACT:
Microscopic particles containing a continuous network of pores open to the particle surface are manufactured of a spongy material. The particles are useful as controlled-release delivery systems for active substances intended for a wide range of uses including topical applications. The spongy character of the particles enhances their usefulness in applications where high pressure or high temperature are encountered, and where exceptional smoothness of feel is required.

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patent: 4734196 (1988-03-01), Kono et al.
patent: 4742086 (1988-05-01), Masamizu et al.

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