Polymeric networks from water-soluble prepolymers

Details Polymeric networks from water-soluble prepolymers Polymeric networks from water-soluble prepolymers

1995-11-03

1997-09-09

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5263232, 526330, 526331, 526333, 523106, 523108, C08F 2610, C08L 3906

Patent

active

056658400

ABSTRACT:
The present invention describes a water-soluble crosslinkable prepolymer that comprises, in the copolymer chain, units derived from the following monomeric structural units: a vinyl lactam (a), vinyl alcohol (b), optionally a lower alkanecarboxylic acid vinyl ester (c), a vinylic crosslinking agent (d) and optionally a vinylic photoinitiator (e); a process for the preparation of the novel prepolymers; crosslinked water-insoluble polymeric networks therefrom; hydrogels and moulded articles made from the crosslinked water-insoluble polymeric networks, especially contact lenses; and a process for the manufacture of hydrogels and finished contact lenses using the mentioned crosslinkable water-soluble prepolymers.

REFERENCES:
patent: 3949021 (1976-04-01), Kunitomo et al.
patent: 4123408 (1978-10-01), Gordon
patent: 4361689 (1982-11-01), Patel
patent: 4536554 (1985-08-01), Lim et al.
patent: 4620954 (1986-11-01), Singer et al.
patent: 4699934 (1987-10-01), Ohkado
patent: 5155194 (1992-10-01), Kossmehl
patent: 5236969 (1993-08-01), Kungler
patent: 5426163 (1995-06-01), Buehler
Production of Soft Contact Lens, vol. 13, #29 (C-562) (3377) Jan. 23, 1989.

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