Process for manufacturing a flexible support for an...

Details Process for manufacturing a flexible support for an... Process for manufacturing a flexible support for an...

2011-03-15

2011-03-15

Kornakov, Michael (Department: 1714)

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of substrate or post-treatment of coated substrate

C106S205710, C204S462000, C204S610000, C427S002110, C427S008000

Reexamination Certificate

active

07906183

ABSTRACT:
A process for making a support for an electrophoretic medium comprising the steps of: applying an agarose coating to a corona treated polymeric film by transferring a layer of agarose solution onto a surface of the corona treated polymeric film. The pH of the agarose solution can be generally maintained between about 8 and about 11 and the concentration of the agarose solution can be generally maintained between about 0.1 and about 0.4% agarose by weight. The agarose powder used to make the agarose solution can be pre-treated by introducing a fresh reducing atmosphere above the agarose powder and exposing the agarose powder to a reducing atmosphere. The reducing atmosphere treatment may be repeated at least three times.

REFERENCES:
patent: 3887491 (1975-06-01), Ramirez et al.
patent: 4275196 (1981-06-01), Shainoff
patent: 4415428 (1983-11-01), Nochumson et al.
patent: 4591640 (1986-05-01), Hjerten
patent: 4668359 (1987-05-01), Postle et al.

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