Method for manufacture of films containing insoluble solids...

Details Method for manufacture of films containing insoluble solids... Method for manufacture of films containing insoluble solids...

2005-08-16

2005-08-16

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer, spacer or materials for use therewith

C429S247000, C429S248000, C429S249000, C429S251000, C029S623100, C264S187000, C264S207000, C536S030000, C536S056000, C536S057000

Reexamination Certificate

active

06929884

ABSTRACT:
A film which slowly releases solids is prepared by dissolving cellulose in a solvent such as an alkali metal salt, for example L1Cl in a polar solvent such as DMAC, dispersing the solid in the solution and gelling the solution with water to form a film.

REFERENCES:
patent: 4367191 (1983-01-01), Cuculo et al.

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