Hydrophilic polymers and contact lenses made therefrom

Details Hydrophilic polymers and contact lenses made therefrom Hydrophilic polymers and contact lenses made therefrom

1984-02-22

1985-08-20

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

351160R, 351160H, 523106, 523108, 526258, C08F22610, G03B 2146

Patent

active

045365547

ABSTRACT:
An interpenetrating network polymer is obtained by mixing hydrophilic monomer vinyl pyrrolidone and hydrophobic monomer (5-alkylene-m-dioxanyl) acrylic ester in the presence of at least two crosslinking agents and, optionally, hydroxyalkyl acrylic ester and catalysts and causing polymerization to occur. Contact lenses made from the polymer have high tensile strength and can absorb a high degree of water.

REFERENCES:
patent: 3267084 (1966-08-01), Rankin et al.
patent: 3647736 (1972-03-01), Ewell
patent: 3985697 (1976-10-01), Urbach
patent: 4430458 (1984-02-01), Tighe et al.

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