CA2211141A1 - Method of imparting impact resistance to a plastic ophthalmic lens, compositions for use therein and a lens prepared thereby - Google Patents
Method of imparting impact resistance to a plastic ophthalmic lens, compositions for use therein and a lens prepared therebyInfo
- Publication number
- CA2211141A1 CA2211141A1 CA002211141A CA2211141A CA2211141A1 CA 2211141 A1 CA2211141 A1 CA 2211141A1 CA 002211141 A CA002211141 A CA 002211141A CA 2211141 A CA2211141 A CA 2211141A CA 2211141 A1 CA2211141 A1 CA 2211141A1
- Authority
- CA
- Canada
- Prior art keywords
- lens
- impact resistance
- compositions
- plastic ophthalmic
- multifunctional acrylate
- 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
Links
Landscapes
- Surface Treatment Of Optical Elements (AREA)
- Paints Or Removers (AREA)
Abstract
A method is disclosed for imparting impact resistance to a plastic ophthalmic lens. The method consists of applying a coating of a multifunctional acrylate in a solvent mixture to the back surface of the lens, and curing the multifunctional acrylate to form an impact resistance imparting coat. The multifunctional acrylate preferably has at least about 40 % by weight of a difunctional acrylate. The multifunctional acrylate preferably has a glass transition temperature less than about 60 °C. Lenses with an impact resistance imparting coat on the back, and an abrasion resistant coat on at least the front of the lens, are also disclosed.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/376,827 | 1995-01-23 | ||
US08/376,827 US5619288A (en) | 1995-01-23 | 1995-01-23 | Impact resistant plastic ophthalmic lens |
PCT/EP1996/000256 WO1996023243A1 (en) | 1995-01-23 | 1996-01-23 | Method of imparting impact resistance to a plastic ophthalmic lens, compositions for use therein and a lens prepared thereby |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2211141A1 true CA2211141A1 (en) | 1996-08-01 |
CA2211141C CA2211141C (en) | 2006-03-14 |
Family
ID=36095740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2211141 Expired - Lifetime CA2211141C (en) | 1995-01-23 | 1996-01-23 | Method of imparting impact resistance to a plastic ophthalmic lens, compositions for use therein and a lens prepared thereby |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2211141C (en) |
-
1996
- 1996-01-23 CA CA 2211141 patent/CA2211141C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2211141C (en) | 2006-03-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20160125 |