GB1471456A - Flexible contact lenses - Google Patents

Flexible contact lenses

Info

Publication number
GB1471456A
GB1471456A GB3381174A GB3381174A GB1471456A GB 1471456 A GB1471456 A GB 1471456A GB 3381174 A GB3381174 A GB 3381174A GB 3381174 A GB3381174 A GB 3381174A GB 1471456 A GB1471456 A GB 1471456A
Authority
GB
United Kingdom
Prior art keywords
sio
graft polymer
formula
vinyl pyrrolidone
silicone
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
GB3381174A
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.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
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 Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Publication of GB1471456A publication Critical patent/GB1471456A/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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • 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
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B29D11/00134—Curing of the contact lens material
    • 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
    • B29D11/00865—Applying coatings; tinting; colouring
    • 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
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/12—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes
    • C08F283/124—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes on to polysiloxanes having carbon-to-carbon double bonds
    • 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
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/12—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes
    • C08F283/128—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes on to reaction products of polysiloxanes having at least one Si-H bond and compounds having carbon-to-carbon double bonds

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ophthalmology & Optometry (AREA)
  • Manufacturing & Machinery (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Eyeglasses (AREA)
  • Graft Or Block Polymers (AREA)
  • Silicon Polymers (AREA)
  • Materials For Medical Uses (AREA)

Abstract

1471456 Graft polymer lens ESSILOR INTERNATIONAL 31 July 1974 [6 Aug 1973] 33811/74 Heading C3G A contact lens comprises a shaped, crosslinked graft polymer of silicone and poly-(vinyl pyrrolidone) and water in an amount sufficient to impart optical transparency to the lens. The silicone used in the examples is a mixture of a dimethylpolysiloxanic oil blocked at each end by a unit of formula a copolymer of units of formula (CH 3 ) 3 SiO 0À5 , H 2 C=CH-(CH 3 )SiO and SiO 2 and a copolymer of units of formula (CH 3 ) 2 HSiO 0À5 and SiO 2 . The silicone is subjected to moulding and curing, irradiated in an oxidizing medium, contacted with a grafting medium comprising N-vinyl pyrrolidone and, optionally, poly-(vinyl pyrrolidone), to form a graft polymer and the graft polymer is cross-linked, after swelling in water, by application of, e.g. U.V. radiation.
GB3381174A 1973-08-06 1974-07-31 Flexible contact lenses Expired GB1471456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7328665A FR2240463B1 (en) 1973-08-06 1973-08-06

Publications (1)

Publication Number Publication Date
GB1471456A true GB1471456A (en) 1977-04-27

Family

ID=9123626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3381174A Expired GB1471456A (en) 1973-08-06 1974-07-31 Flexible contact lenses

Country Status (15)

Country Link
JP (1) JPS5046144A (en)
AR (1) AR200614A1 (en)
AT (1) AT335768B (en)
BE (1) BE817877A (en)
BR (1) BR7406271D0 (en)
CA (1) CA1048675A (en)
CH (1) CH588089A5 (en)
CS (1) CS208106B2 (en)
DE (1) DE2436750C3 (en)
ES (1) ES428975A1 (en)
FR (1) FR2240463B1 (en)
GB (1) GB1471456A (en)
IT (1) IT1021099B (en)
NL (1) NL7410472A (en)
SU (1) SU614752A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826889A (en) * 1978-07-18 1989-05-02 Polymer Technology, Corp. Dimensionally stable oxygen permeable hard contact lens material and method of manufacture

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169119A (en) * 1976-04-15 1979-09-25 Permavision Method of molding an ocular membrane
US4143949A (en) * 1976-10-28 1979-03-13 Bausch & Lomb Incorporated Process for putting a hydrophilic coating on a hydrophobic contact lens
US8507577B2 (en) * 2006-10-31 2013-08-13 Johnson & Johnson Vision Care, Inc. Process for forming clear, wettable silicone hydrogel articles
AR074110A1 (en) * 2008-11-13 2010-12-22 Novartis Ag POLYSYLOPHANE COPOLYMERS WITH TERMINAL HYDROPHYLIC POLYMER CHAINS
US8807076B2 (en) * 2010-03-12 2014-08-19 Johnson & Johnson Vision Care, Inc. Apparatus for vapor phase processing ophthalmic devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826889A (en) * 1978-07-18 1989-05-02 Polymer Technology, Corp. Dimensionally stable oxygen permeable hard contact lens material and method of manufacture

Also Published As

Publication number Publication date
AT335768B (en) 1977-03-25
BR7406271D0 (en) 1975-05-27
NL7410472A (en) 1975-02-10
ES428975A1 (en) 1976-12-16
DE2436750B2 (en) 1978-03-30
IT1021099B (en) 1978-01-30
FR2240463B1 (en) 1976-04-30
AR200614A1 (en) 1974-11-22
FR2240463A1 (en) 1975-03-07
SU614752A3 (en) 1978-07-05
DE2436750C3 (en) 1978-11-30
CS208106B2 (en) 1981-08-31
CA1048675A (en) 1979-02-13
ATA638074A (en) 1976-07-15
BE817877A (en) 1974-11-18
CH588089A5 (en) 1977-05-31
JPS5046144A (en) 1975-04-24
DE2436750A1 (en) 1975-02-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee