초록 ▼

Disclosed is a process for preparing polymeric compositions which are suitable for coating medicaments or for use in cosmetic formulations and the novel compositions prepared therefrom. The process makes stable, colloidal, latex-like dispersions of coating polymers which can be readily dried to form

Disclosed is a process for preparing polymeric compositions which are suitable for coating medicaments or for use in cosmetic formulations and the novel compositions prepared therefrom. The process makes stable, colloidal, latex-like dispersions of coating polymers which can be readily dried to form polymeric powder materials. The process makes use of a novel combination of a water-in-oil emulsifier and an oil-in-water emulsifier.

대표청구항 ▼

A polymeric composition comprising (A) about 42.5 to about 98 weight % of at least one water insoluble polymer, (B) about 0.5 to about 30 weight % of at least one oil-in-water emulsifier which is polymeric, water soluble or water dispersible and nonionic. (C) about 1 to about 27.5 weight % of at lea

A polymeric composition comprising (A) about 42.5 to about 98 weight % of at least one water insoluble polymer, (B) about 0.5 to about 30 weight % of at least one oil-in-water emulsifier which is polymeric, water soluble or water dispersible and nonionic. (C) about 1 to about 27.5 weight % of at least one water-in-oil emulsifier which is water insoluble; anionic or amphoteric; more hydrophobic than said oil-in-water emulsifier; substantially dispersible in a low molecular weight, more volatile than water, and substantially water immiscible organic solvent; and compatible with said oil-in-water emulsifier, said polymeric composition being in the form of particles having an average particle size of about 0.1-0.8 m