GB1424293A - Method of making a strain-free polymer - Google Patents

Method of making a strain-free polymer

Info

Publication number
GB1424293A
GB1424293A GB1170074A GB1170074A GB1424293A GB 1424293 A GB1424293 A GB 1424293A GB 1170074 A GB1170074 A GB 1170074A GB 1170074 A GB1170074 A GB 1170074A GB 1424293 A GB1424293 A GB 1424293A
Authority
GB
United Kingdom
Prior art keywords
mixture
glycol
polymerizing
march
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.)
Expired
Application number
GB1170074A
Other languages
English (en)
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.)
American Optical Corp
Original Assignee
American Optical Corp
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 American Optical Corp filed Critical American Optical Corp
Publication of GB1424293A publication Critical patent/GB1424293A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00038—Production of contact lenses
    • 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
    • C08F271/00—Macromolecular compounds obtained by polymerising monomers on to polymers of nitrogen-containing monomers as defined in group C08F26/00
    • C08F271/02—Macromolecular compounds obtained by polymerising monomers on to polymers of nitrogen-containing monomers as defined in group C08F26/00 on to polymers of monomers containing heterocyclic nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/76—Office equipment or accessories
    • B29L2031/7602—Maps

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Eyeglasses (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
GB1170074A 1973-03-15 1974-03-15 Method of making a strain-free polymer Expired GB1424293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US341614A US3894129A (en) 1973-03-15 1973-03-15 Method of manufacture of strain free contact lenses

Publications (1)

Publication Number Publication Date
GB1424293A true GB1424293A (en) 1976-02-11

Family

ID=23338295

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1170074A Expired GB1424293A (en) 1973-03-15 1974-03-15 Method of making a strain-free polymer

Country Status (4)

Country Link
US (1) US3894129A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2411895A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2230488B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1424293A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187997A (en) * 1986-03-05 1987-09-23 Ceskoslovenska Akademie Ved Method and equipment for the polymerization cast molding of articles, above all of lenses from hydrophilic gels

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054624A (en) * 1974-11-21 1977-10-18 Warner-Lambert Company Preparing a hydrated contact lens
US3978164A (en) * 1974-11-21 1976-08-31 Warner-Lambert Company Pyrrolidone-methacrylate graft copolymers from 3-stage polymerization process
US4127638A (en) * 1976-09-13 1978-11-28 American Optical Corporation Process for casting polymer rods
US4123408A (en) * 1976-11-26 1978-10-31 American Optical Corporation Hydrogel contact lens
DE2839249A1 (de) * 1977-09-12 1979-03-22 Toray Industries Verfahren zur herstellung einer weichen kontaktlinse und ausgangsloesung zur durchfuehrung des verfahrens
US4442141A (en) * 1982-11-01 1984-04-10 Barnes-Hind/Hydrocurve, Inc. Treatment of cellulose acetate butyrate contact lenses
US4680149A (en) * 1986-05-19 1987-07-14 International Hydron Corporation Mold and method for spin casting a precisely configured article
US4678838A (en) * 1986-08-04 1987-07-07 Ciba-Geigy Corporation Particulate hydroperoxidized poly-N-vinyl lactam, its preparation and use thereof
US4791175A (en) * 1986-08-04 1988-12-13 Ciba-Geigy Corporation Particulate hydroperoxidized poly-n-vinyl lactam, its preparation and use thereof
US4833196A (en) * 1986-08-04 1989-05-23 Ciba-Geigy Corporation Particulate hydroperoxidized poly-N-vinyl lactam, its preparation and use thereof
US4921205A (en) * 1988-05-17 1990-05-01 Sola Usa, Inc. Lens mold assembly
US4931228A (en) * 1989-04-05 1990-06-05 Coastvision Method of manufacturing soft contact lens buttons
BRPI0607430B8 (pt) * 2005-02-14 2021-06-22 Johnson & Johnson Vision Care dispositivo oftálmico confortável e métodos de sua produção
US9052529B2 (en) 2006-02-10 2015-06-09 Johnson & Johnson Vision Care, Inc. Comfortable ophthalmic device and methods of its production

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511436A (en) * 1946-01-11 1950-06-13 Henry J Kauth Method for insulating electrical equipment
FR81513E (fr) * 1962-03-13 1963-10-04 Lentilles Ophtalmiques Rationn Procédé de fabrication d'éléments optiques et en particulier de lentilles ophtalmiques en matières plastiques
DE1495381B2 (de) * 1963-09-07 1971-06-24 Czeskoslovenska akademie ved , Prag Verfahren zur herstellung von kontaktlinsen oder kontakt linsenrohlingen aus quellfaehigen hydrogelen
AT251910B (de) * 1964-07-02 1967-01-25 Ceskoslovenska Akademie Ved Verfahren zur Herstellung von weichen, biegsamen Kontaktlinsen
US3265763A (en) * 1964-08-17 1966-08-09 American Cyanamid Co Mar-resistant unsaturated polyester resins
US3413391A (en) * 1966-04-26 1968-11-26 Bell Telephone Labor Inc Method of degassing in an impregnating process
US3621079A (en) * 1968-10-21 1971-11-16 Patent Structures Inc Graft of hydroxyalkyl methacrylate onto polyvinylpyrrolidone
US3639524A (en) * 1969-07-28 1972-02-01 Maurice Seiderman Hydrophilic gel polymer insoluble in water from polyvinylpyrrolidone with n-vinyl-2-pyrrolidone and methacrylic modifier
BE759530A (fr) * 1969-11-28 1971-04-30 Griffin Lab Inc Lentille de contact et son procede de fabrication
FR2109470A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1970-10-19 1972-05-26 Silor
US3807398A (en) * 1972-09-19 1974-04-30 B Grucza Ocular implant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187997A (en) * 1986-03-05 1987-09-23 Ceskoslovenska Akademie Ved Method and equipment for the polymerization cast molding of articles, above all of lenses from hydrophilic gels
GB2187997B (en) * 1986-03-05 1990-02-14 Ceskoslovenska Akademie Ved Method and equipment for the polymerization cast molding of articles, above all of lenses from hydrophilic gels

Also Published As

Publication number Publication date
US3894129A (en) 1975-07-08
FR2230488B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-10-07
DE2411895A1 (de) 1974-09-19
DE2411895C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-11-26
FR2230488A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-12-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee