Compositions: coating or plastic – Coating or plastic compositions – Carbohydrate or derivative containing
Reexamination Certificate
2005-05-17
2005-05-17
Brunsman, David (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Carbohydrate or derivative containing
C106S170500, C106S170510, C106S170340
Reexamination Certificate
active
06893493
ABSTRACT:
The present invention relates to a preparation method of solvent-free water-dispersible hydroxypropyl methyl cellulose phthalate nanoparticle, and more particularly, to a preparation method of solvent-free water-dispersible hydroxypropyl methyl cellulose phthalate nanoparticle, which is environment-friendly and advantageous in disintegration and dissolution when used as an enteric coating material, which is prepared by obtaining suitable hydroxypropyl methyl cellulose phthalate (HPMCP) particle through aqueous emulsification process and regulating content of remaining electrolyte through ion exchange process.
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Baek Hyon-Ho
Cho Kyu-Il
Kim Il Hyuk
Kim Jung Hyun
Lee Jun Young
Brunsman David
Finnegan Henderson Farabow Garrett & Dunner LLP
Samsung Fine Chemicals Co. Ltd.
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