ZA732799B - Contact lens formed from alternating block copolymers of bisphenol-a carbonate and dimethyl siloxane - Google Patents
Contact lens formed from alternating block copolymers of bisphenol-a carbonate and dimethyl siloxaneInfo
- Publication number
- ZA732799B ZA732799B ZA732799A ZA732799A ZA732799B ZA 732799 B ZA732799 B ZA 732799B ZA 732799 A ZA732799 A ZA 732799A ZA 732799 A ZA732799 A ZA 732799A ZA 732799 B ZA732799 B ZA 732799B
- Authority
- ZA
- South Africa
- Prior art keywords
- bisphenol
- carbonate
- contact lens
- block copolymers
- dimethyl siloxane
- Prior art date
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
- B29D11/00009—Production of simple or compound lenses
- B29D11/00019—Production of simple or compound lenses with non-spherical faces, e.g. toric faces
-
- 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
- B29D11/00076—Production of contact lenses enabling passage of fluids, e.g. oxygen, tears, between the area under the lens and the lens exterior
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/18—Block or graft polymers
- C08G64/186—Block or graft polymers containing polysiloxane sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/445—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences
- C08G77/448—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences containing polycarbonate sequences
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
- Silicon Polymers (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25522072A | 1972-05-19 | 1972-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA732799B true ZA732799B (en) | 1974-04-24 |
Family
ID=22967363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA732799A ZA732799B (en) | 1972-05-19 | 1973-04-25 | Contact lens formed from alternating block copolymers of bisphenol-a carbonate and dimethyl siloxane |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS4956643A (en) |
| AU (1) | AU5547673A (en) |
| DE (1) | DE2324654A1 (en) |
| FR (1) | FR2185653A1 (en) |
| IT (1) | IT1048120B (en) |
| ZA (1) | ZA732799B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4478981A (en) * | 1982-03-22 | 1984-10-23 | Petrarch Systems Inc. | Mixtures of polyacrylate resins and siloxane carbonate copolymers |
| JPS636522A (en) * | 1986-06-26 | 1988-01-12 | Tome Sangyo Kk | Contact lens |
| JPH04293959A (en) * | 1991-03-25 | 1992-10-19 | Nippon Petrochem Co Ltd | Thermoplastic resin composition |
| US5260000A (en) * | 1992-08-03 | 1993-11-09 | Bausch & Lomb Incorporated | Process for making silicone containing hydrogel lenses |
| US5723541A (en) * | 1993-06-16 | 1998-03-03 | Rasor Associates, Inc. | Ocular lens composition and method of formation |
| JP4810099B2 (en) * | 2005-01-20 | 2011-11-09 | 株式会社メニコン | Transparent gel and contact lens comprising the same |
-
1973
- 1973-04-25 ZA ZA732799A patent/ZA732799B/en unknown
- 1973-05-09 AU AU55476/73A patent/AU5547673A/en not_active Expired
- 1973-05-16 IT IT24158/73A patent/IT1048120B/en active
- 1973-05-16 DE DE2324654A patent/DE2324654A1/en active Pending
- 1973-05-18 FR FR7318111A patent/FR2185653A1/en active Pending
- 1973-05-18 JP JP48054808A patent/JPS4956643A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2324654A1 (en) | 1973-11-29 |
| FR2185653A1 (en) | 1974-01-04 |
| AU5547673A (en) | 1974-11-14 |
| IT1048120B (en) | 1980-11-20 |
| JPS4956643A (en) | 1974-06-01 |
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