Mixture for the care and cleaning of contact lenses

Details Mixture for the care and cleaning of contact lenses Mixture for the care and cleaning of contact lenses

1985-12-09

1986-12-23

Willis, Prince E.

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

51308, B24D 306, C09C 104

Patent

active

046310720

ABSTRACT:
The disclosure relates to a mixture for the care and cleaning of contact lenses, containing water, an abrasive based on one or several metal oxides, and a suspension aid based on swellable compounds. The abrasive is zinc oxide and/or tin oxide having a grain size smaller than 10 .mu.m and a suspension aid based on swellable compounds, such as polyvinyl alcohol, cellulose derivatives, guar gum, as well as optionally buffers for adjusting the pH value to between 5 and 8 and/or sodium chloride, the ratio of abrasive to water in the mixture ranging between 1:99 and 90:10, and the grain size of the abrasive being preferably in a range of 0.5 .mu.m.

REFERENCES:
patent: 4021263 (1977-05-01), Rosenblum
patent: 4126899 (1979-07-01), Molnar et al.
patent: 4242842 (1981-01-01), Yancey
patent: 4358295 (1982-11-01), Namba et al.
patent: 4389819 (1983-06-01), Williamson et al.
patent: 4394179 (1983-06-01), Ellis et al.
patent: 4529410 (1985-07-01), Khaladji et al.

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