Cold water-insoluble polyvinyl alcohol pouch for the controlled

Details Cold water-insoluble polyvinyl alcohol pouch for the controlled Cold water-insoluble polyvinyl alcohol pouch for the controlled

1979-05-04

1981-09-15

Weinblatt, Mayer

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

252 90, 252 91, 252 92, 252 93, 252 95, 252 99, 25217424, 428500, 128260, 128272, 206 084, 206484, 236 6, 236 34, 236 57, B65D 120, B65D 1120

Patent

active

042898153

ABSTRACT:
A pouch for the controlled release of active ingredients into an aqueous medium comprising liquid or solid active ingredients enclosed in a sealed envelope of cold water-insoluble polyvinyl alcohol.

REFERENCES:
patent: 3977404 (1976-08-01), Theeuves
patent: 4011172 (1977-03-01), Marsan et al.
patent: 4170565 (1979-10-01), Flesher et al.

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