Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1991-08-22
1993-05-11
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523106, 525278, 525293, C08F27102
Patent
active
052101118
ABSTRACT:
The crosslinked polymerization product of the reaction product of a polymeric backbone containing pendant hydroxyl groups with an unsaturated monoisocyanate or of said reaction product with an ethylenically unsaturated monomer gives a hydrogel material suitable for making contact lenses.
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Goldenberg Merrill S.
Rennwantz Ellen
Ciba-Geigy Corporation
Hall Luther A. R.
Hamilton, III Thomas
Hervey William G.
Seidleck James J.
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