Production of polyelectrolyte capsules by surface precipitation

Details Production of polyelectrolyte capsules by surface precipitation Production of polyelectrolyte capsules by surface precipitation

2006-06-06

2006-06-06

Acquah, Samuel A. (Department: 1711)

Coating processes

Particles, flakes, or granules coated or encapsulated

Solid encapsulation process utilizing an emulsion or...

C427S207100, C427S212000, C427S213310, C427S213360, C427S220000, C427S340000, C424S489000

Reexamination Certificate

active

07056554

ABSTRACT:
The invention concerns a method for producing nanocapsules and microcapsules comprising a polyelectrolyte shell by surface precipitation from the solution, by applying a shell to template particles comprising the steps (a) providing a dispersion of template particles of suitable size in a salt-containing liquid phase which contains the components required to form the shell in a dissolved form and (b) precipitating the components from the liquid phase onto the template particles under conditions which enable the formation of a shell around the template particles that has a thickness of from 1 to 100 nm.

REFERENCES:
patent: 0 972 563 (2000-01-01), None
patent: 1 116 516 (2001-07-01), None
patent: 1116516 (2001-07-01), None
patent: WO 99 47253 (1999-09-01), None
patent: WO 99/47253 (1999-09-01), None
patent: WO 01 64330 (2001-09-01), None

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