Article coated with copolymer of poly(vinyl alcohol)

Details Article coated with copolymer of poly(vinyl alcohol) Article coated with copolymer of poly(vinyl alcohol)

1986-09-03

1987-09-15

Schofer, Joseph L.

Stock material or miscellaneous articles

Composite

Of fluorinated addition polymer from unsaturated monomers

264 14, 351159, 351160H, 522 6, 522153, 623 5, 623 6, B32B 2700

Patent

active

046939393

ABSTRACT:
Novel, non-crosslinked copolymers of vinyl trifluoroacetate (VTA) and up to 5 weight percent of the VTA of certain comonomers, such as vinyl esters, vinyl ethers, or disubstituted ethylene monomers, are disclosed. Solvolysis of these copolymers provides novel water-insoluble, non-crosslinked, poly(vinyl alcohol) copolymers which can be hydrated to copolymers having controllably variable hydrogel properties and high strength. Such poly(vinyl alcohol) copolymers are particularly desirable as ophthalmic devices such as contact lenses, corneal implants and transplants, and intraocular lenses.

REFERENCES:
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patent: 3220960 (1965-11-01), Wichterle
patent: 3361858 (1968-01-01), Wichterle
patent: 3388199 (1968-06-01), Chaney et al.
patent: 3427298 (1969-02-01), Tsuboi et al.
Harris et al., J. Polymer Sci., A-1, 4, 665-677 (1966).
Hass, et al., J. Polymer Sci., 22, 291 (1956).
L. A. Vol'f et al., Khim. Volokna, 2, 14 (1979).
J. Chernikov et al., Nauchn Tr., Kuban Gos. Univ., 243, 141 (1977).

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