Frangible capsules containing composition

• US 4,844,885 A
• Filed: 04/08/1987
• Issued: 07/04/1989
• Est. Priority Date: 04/08/1987
• Status: Expired due to Fees

• Current Assignee: Milton P. Chernack
• Original Assignee: Production Previews Incorporated
• Inventors: Chernack, Milton P.
• Primary Examiner(s): Page, Thurman K.
• Application Number:
  US07/035,973
• Time in Patent Office: 818 Days
• Field of Search: 424/61, 424/451, 424/455, 252/174.13, 134/38
• US Class Current: 424/61
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 8/11 Encapsulated compositions
• CPC Class Codes: A61Q 3/04 Nail coating removers

Abstract

A pressure-sensitive microcapsule-containing composition composed of a liquid phase capable of solidification which has substantially evenly dispersed therethroughout a multiplicity of microencapsulated droplets of a solvent phase. The shells of the microcapsule are rupturable under applied pressure for selectively releasing the solvent phase for dissolving the liquid phase after it has solidified.

Claims

1. A pressure-sensitive microcapsules-containing composition comprising a nail enamel as a liquid solidifiable phase having substantially evenly dispersed therethroughout a multiplicity of microencapsulated droplets of a solvent phase comprising oil and/or fragrance, the walls of said microcapsules being rupturable under applied pressure for selectively releasing said solvent phase for dissolving said nail enamel after solidification thereof, said nail enamel and said solvent phase being non-reactive with said capsule walls.

3. The composition of claim 1, wherein the microcapsules are substantially invisibly dispersed throughout the liquid phase.

4. The composition of claim 1, wherein the liquid phase forms a substantially smooth surface upon solidification thereof.

5. The composition of claim 1, wherein the microcapsules are of a size so as to not substantially interfere with the smooth appearance of the surface.

6. The composition of claim 1, wherein the solvent phase comprises at least two solvents.

2. A pressure-sensitive microcapsules containing composition comprising water soluble paint as a liquid solidifiable phase having substantially evenly dispersed therethroughout a multiplicity of microencapsulated droplets of an aqueous phase, the walls of said microcapsules being rupturable under applied pressure for selectively releasing said aqueous phase for dissolving said water soluble paint after solidification thereof, said aqueous phase and said water soluble paint being non-reactive with said capsule walls.