Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Patent
1998-01-22
2000-08-01
Webman, Edward J.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
424499, 428402, A01N 2514, A61K 914, A61K 4732
Patent
active
06096345&
ABSTRACT:
This invention relates to a composition containing an active chemical and a particulate polysaccharide matrix having improved water dispersibility and dispersion stability in aqueous solutions by the incorporation of a copolymer of a N-vinyl lactam monomer and a hydrophobic comonomer. The improved properties of the matrix promotes its use as a dispersing agent in a wide variety of formulations where soil and skin substantivity or sustained release of the active chemical is required, as in pharmaceutical, pre- and post-emergent agrochemical and cosmetic formulations. The invention also pertains to the preparation and use of formulations based on the use of polysaccharide/copolymer matrix of this invention.
REFERENCES:
patent: 5209922 (1993-05-01), Mgrianos et al.
patent: 5242684 (1993-09-01), Merianos
patent: 5639710 (1997-06-01), Lo et al.
patent: 5672353 (1997-09-01), Narayanan
patent: 5698211 (1997-12-01), Narayanan
Curry James F.
Goehner, Jr. Ronald H.
Narayanan Kolazi S.
Davis William J.
ISP Investments Inc.
Katz Walter
Maue Marilyn J.
Webman Edward J.
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