Stable compositions of nano-particulate unmodified pigments and

Details Stable compositions of nano-particulate unmodified pigments and Stable compositions of nano-particulate unmodified pigments and

1997-10-30

2000-02-15

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Marking

106 3186, C09D 1100

Patent

active

06024786&

ABSTRACT:
If the particle size of pigments in ink-jet inks is reduced below 500 nm, then the ink compositions achieved extraordinary stability; that is, there is no visible sediment formed after three weeks at ambient temperature and there is no sediment formed after heating to 70.degree. C. for 10 min followed by cooling to 0.degree. C. for 10 min. No dispersant is necessary, and the pigment particles having such a defined size may be incorporated into microemulsions, using a suitable oil (water-immiscible organic compound), at least one amphiphile, and water.

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Neelima J. Kale et al, "Studies on microemulsions using Brij 96 as surfactant and glycerin, ethylene glycol and propylene glycol as cosurfactants" International Journal of Pharmaceutics, vol. 57, pp. 87, 89, 93 (1989) No Month.
Application Bulletin and Product Information (3), "Invert Solvents" no date available.

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