Chemically fixed micelles
AssigneeEastman Kodak Company
InventorsMridula Nair, Youngtai Yoo
Life of this patent
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Abstract
There is provided copolymer particles wherein the particles are derived from chemically fixed micelles that comprise a copolymer. The copolymer is an amphiphilic block or graft copolymer comprising a water soluble component and an oleophilic component that can be crosslinked in an aqueous environment; and the oleophilic component is crosslinked. The particles can be dispersed in an aqueous continuous phase. The particles can contain other materials associated with the oleophilic component such as biochemical agents or other materials such as photographic materials such as couplers and dyes.
Claims15
A composition comprising micelles that are composed of an amphiphilic block or graft copolymer comprising a water soluble component and an oleophilic component, wherein the micelles have been chemically fixed by crosslinking said oleophilic component while the micelles are in an aqueous environment, and wherein a drug is contained in the crosslinked oleophilic component of the copolymer.
A composition comprising a continuous phase having therein micelles wherein:
- a) the continuous phase is aqueous;
- b) the micelles are composed of an amphiphilic block or graft copolymer comprising a water soluble component and an oleophilic component;
- and
- c) the micelles have been chemically fixed by crosslinking the oleophilic component while the micelles are in said continuous phase.
A composition comprising micelles that are composed of an amphiphilic block or graft copolymer comprising a water soluble component and an oleophilic component, wherein the micelles have been chemically fixed by crosslinking said oleophilic component while the micelles are in an aqueous environment, and wherein said oleophilic component of the copolymer is derived from monomers selected from the group consisting of caprolactone;
- propiolactone;
- .beta.-butyrolactone;
- .delta.-valerolactone;
- .epsilon.-caprolactam;
- lactic acid;
- glycolic acid;
- hydroxybutyric acid;
- lysine, glutamic acid and derivatives thereof.
Dependencies are inferred from the claim text.