FR2321521A1 - HIGH SYNTHETIC POLYMERS FOR LONG USE CONTACT LENSES AND PROCESS FOR MANUFACTURING THEM - Google Patents

HIGH SYNTHETIC POLYMERS FOR LONG USE CONTACT LENSES AND PROCESS FOR MANUFACTURING THEM

Info

Publication number
FR2321521A1
FR2321521A1 FR7526347A FR7526347A FR2321521A1 FR 2321521 A1 FR2321521 A1 FR 2321521A1 FR 7526347 A FR7526347 A FR 7526347A FR 7526347 A FR7526347 A FR 7526347A FR 2321521 A1 FR2321521 A1 FR 2321521A1
Authority
FR
France
Prior art keywords
pts
soln
contact lenses
manufacturing
mould
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7526347A
Other languages
French (fr)
Other versions
FR2321521B1 (en
Inventor
Tanako Kyoichi
Kyoichi Tanako
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Menicon Co Ltd
Original Assignee
Toyo Contact Lens Co Ltd
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 Toyo Contact Lens Co Ltd filed Critical Toyo Contact Lens Co Ltd
Priority to FR7526347A priority Critical patent/FR2321521A1/en
Publication of FR2321521A1 publication Critical patent/FR2321521A1/en
Application granted granted Critical
Publication of FR2321521B1 publication Critical patent/FR2321521B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F226/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
    • C08F226/06—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a heterocyclic ring containing nitrogen
    • C08F226/10—N-Vinyl-pyrrolidone
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • G02B1/043—Contact lenses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Novel high polymers for the prepn. of contact lenses able to be worn continuously over long periods of time are obtd. by (a) mixing 40-60 pt. N-vinyl-2-pyrrolidone with 35-40 pts. wt. 2-hydroxyethyl methacrylate and 10-17 pts. wt. 2-hydroxyethyl acrylate to form a soln. Process further comprises (b) adding to the soln. (a) 0.2-0.5 pts. wt. maleic acid dially ester and 0.1-0.5 pts. wt. of a polymerisation initiator; (c) stirring the soln. to dissolve the components and produce an intimate mixture; (d) heating the soln. in a mould to effect its copolymerisation; (e) cooling the product obtd. and (f) removing the product from the mould. The polymers are transparent, have high hydrophilic props. and moderate elastic flexibility. They have excellent O2-transmitting power and water-absorption. They may be worked easily and with precision in any machines used for the manufacture of contact lenses.
FR7526347A 1975-08-21 1975-08-21 HIGH SYNTHETIC POLYMERS FOR LONG USE CONTACT LENSES AND PROCESS FOR MANUFACTURING THEM Granted FR2321521A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7526347A FR2321521A1 (en) 1975-08-21 1975-08-21 HIGH SYNTHETIC POLYMERS FOR LONG USE CONTACT LENSES AND PROCESS FOR MANUFACTURING THEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7526347A FR2321521A1 (en) 1975-08-21 1975-08-21 HIGH SYNTHETIC POLYMERS FOR LONG USE CONTACT LENSES AND PROCESS FOR MANUFACTURING THEM

Publications (2)

Publication Number Publication Date
FR2321521A1 true FR2321521A1 (en) 1977-03-18
FR2321521B1 FR2321521B1 (en) 1980-10-03

Family

ID=9159373

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7526347A Granted FR2321521A1 (en) 1975-08-21 1975-08-21 HIGH SYNTHETIC POLYMERS FOR LONG USE CONTACT LENSES AND PROCESS FOR MANUFACTURING THEM

Country Status (1)

Country Link
FR (1) FR2321521A1 (en)

Also Published As

Publication number Publication date
FR2321521B1 (en) 1980-10-03

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Legal Events

Date Code Title Description
TP Transmission of property