Hydrogel products and methods of producing same

Details Hydrogel products and methods of producing same Hydrogel products and methods of producing same

1993-08-17

1996-02-06

Nutter, Nathan M.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Web, sheet or filament bases; compositions of bandages; or...

424447, 424484, 424486, 424487, 424488, 523105, 523111, 523121, 604336, 604344, A01J 2100, A01J 2512

Patent

active

054894379

ABSTRACT:
An adhesive hydrogel product includes a mixture comprising water, and a thermoplastic, water-soluble polymer extruded in a dry state. The thermoplastic, water-soluble polymer constitutes the principal water-soluble polymer of the mixture and is present in the mixture in a concentration, by weight, of at least 15 percent. The mixture having been exposed to a dose of radiant energy effective to provide an adhesive hydrophilic gel having a gel breaking strength of at least 10 p.s.i., and an absorption capacity per mil of thickness of the gel in excess of 10% by weight, and more preferably in excess of 30% by weight. The method includes the steps of directing a substrate including an extruded, thermoplastic, water-soluble polymer through a liquid bath at a speed for causing the substrate to absorb approximately 30 percent to about 80 percent, by weight, of said liquid to thereby convert said water-soluble polymer into a hydrogel; separating the substrate into discrete hydrogel products; packaging the discrete hydrogel products in moisture-impervious packages, and subjecting the packaged hydrogel products to a dose of radiation effective to provide an adhesive hydrogel having a gel breaking strength of at least 10 p.s.i., and an absorption capacity per mil of thickness of the gel in excess of 10%, by weight, and more preferably in excess of 30% by weight.

REFERENCES:
patent: 3810468 (1974-05-01), Harper et al.
patent: 4115339 (1978-09-01), Restaino
patent: 4303066 (1981-12-01), D'Andrea
patent: 4307717 (1981-12-01), Hymes et al.
patent: 4372311 (1983-02-01), Potts
patent: 4377160 (1983-03-01), Romaine
patent: 4449982 (1984-05-01), Gould, III
patent: 4675009 (1987-06-01), Hymes et al.
patent: 4684558 (1987-08-01), Keusch et al.
patent: 4699146 (1987-10-01), Sieverding
patent: 4706680 (1987-11-01), Keusch et al.
patent: 4777954 (1988-10-01), Keusch et al.
patent: 4989607 (1991-02-01), Keusch et al.
patent: 5143071 (1992-09-01), Keusch et al.
Nitikin "The Chemistry of Cellulose and Wood" Israel Program for Scientific Translations, Ltd. Academy of Sciences of the USSR Jerusalem, 1966. pp. 62-71.

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