GB1471456A - Flexible contact lenses - Google Patents
Flexible contact lensesInfo
- 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
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)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Eyeglasses (AREA)
- Graft Or Block Polymers (AREA)
- Materials For Medical Uses (AREA)
- Silicon Polymers (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.
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)
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)
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 |
RU2524946C2 (en) * | 2008-11-13 | 2014-08-10 | Новартис Аг | Polysiloxane copolymers with hydrophilic polymer terminal chains |
US8807076B2 (en) * | 2010-03-12 | 2014-08-19 | Johnson & Johnson Vision Care, Inc. | Apparatus for vapor phase processing ophthalmic devices |
-
1973
- 1973-08-06 FR FR7328665A patent/FR2240463B1/fr not_active Expired
-
1974
- 1974-07-18 CH CH991374A patent/CH588089A5/xx not_active IP Right Cessation
- 1974-07-19 BE BE146758A patent/BE817877A/en not_active IP Right Cessation
- 1974-07-22 CA CA74205353A patent/CA1048675A/en not_active Expired
- 1974-07-30 DE DE19742436750 patent/DE2436750C3/en not_active Expired
- 1974-07-30 BR BR627174A patent/BR7406271D0/en unknown
- 1974-07-31 AR AR25498274A patent/AR200614A1/en active
- 1974-07-31 GB GB3381174A patent/GB1471456A/en not_active Expired
- 1974-08-02 JP JP8896374A patent/JPS5046144A/ja active Pending
- 1974-08-05 SU SU742051194A patent/SU614752A3/en active
- 1974-08-05 AT AT638074A patent/AT335768B/en not_active IP Right Cessation
- 1974-08-05 NL NL7410472A patent/NL7410472A/en not_active Application Discontinuation
- 1974-08-06 CS CS556174A patent/CS208106B2/en unknown
- 1974-08-06 IT IT2601574A patent/IT1021099B/en active
-
1976
- 1976-09-03 ES ES76428975A patent/ES428975A1/en not_active Expired
Cited By (1)
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 |
---|---|
CS208106B2 (en) | 1981-08-31 |
AR200614A1 (en) | 1974-11-22 |
DE2436750A1 (en) | 1975-02-27 |
JPS5046144A (en) | 1975-04-24 |
IT1021099B (en) | 1978-01-30 |
ES428975A1 (en) | 1976-12-16 |
BR7406271D0 (en) | 1975-05-27 |
CA1048675A (en) | 1979-02-13 |
DE2436750B2 (en) | 1978-03-30 |
CH588089A5 (en) | 1977-05-31 |
NL7410472A (en) | 1975-02-10 |
BE817877A (en) | 1974-11-18 |
FR2240463B1 (en) | 1976-04-30 |
ATA638074A (en) | 1976-07-15 |
FR2240463A1 (en) | 1975-03-07 |
AT335768B (en) | 1977-03-25 |
DE2436750C3 (en) | 1978-11-30 |
SU614752A3 (en) | 1978-07-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |