IT1062992B - High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydride - Google Patents

High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydride

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Publication number
IT1062992B
IT1062992B IT2184476A IT2184476A IT1062992B IT 1062992 B IT1062992 B IT 1062992B IT 2184476 A IT2184476 A IT 2184476A IT 2184476 A IT2184476 A IT 2184476A IT 1062992 B IT1062992 B IT 1062992B
Authority
IT
Italy
Prior art keywords
monomer
unsatd
idene
anhydride
vinyl
Prior art date
Application number
IT2184476A
Other languages
Italian (it)
Original Assignee
Global Vision Uk Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Global Vision Uk Limited filed Critical Global Vision Uk Limited
Priority to IT2184476A priority Critical patent/IT1062992B/en
Application granted granted Critical
Publication of IT1062992B publication Critical patent/IT1062992B/en

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Abstract

A contact lens with an oxygen transmission corresp. at least to an atmos. oxygen equiv. of 5% comprises a polymeric hydrogel contg. >=30 wt. %, pref. 50-85 wt. % water, based on total wt. of hydrogen, the molecular structure of the hydrogel contg. ionic gps. and the hydrogel being the hydrated polymer obtd. from a monomer mixt. contg. a large amt. of a vinyl(idene) monomer, and smaller amts. of an unsatd. anhydride or acid and a crosslinking agent. The lens is soft, hydrophilic, can be worn for long periods without causing anoxy of the underlying correa, undergoes minimum displacement during blinking, has high oxygen permeability and can be sterilised in boiling water without causing deterioration of the polymer.
IT2184476A 1976-04-01 1976-04-01 High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydride IT1062992B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT2184476A IT1062992B (en) 1976-04-01 1976-04-01 High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2184476A IT1062992B (en) 1976-04-01 1976-04-01 High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydride

Publications (1)

Publication Number Publication Date
IT1062992B true IT1062992B (en) 1985-02-11

Family

ID=11187646

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2184476A IT1062992B (en) 1976-04-01 1976-04-01 High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydride

Country Status (1)

Country Link
IT (1) IT1062992B (en)

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