Method for producing contact lenses with wearing comfort
US10718960B2 · kind B2 · utility
0Cited by
44References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2017 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Aug 24, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0061
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention is related to a method for producing silicone hydrogel contact lenses with a stable lubricious hydrogel coating thereon providing a low surface friction. A method of the invention comprises forming a plasma-reactive hydrophilic polymer hybrid base coating having reactive functional groups on a silicone hydrogel contact lens and heating the silicone hydrogel contact lens with the hybrid base coating in an aqueous solution of a water-soluble and thermally crosslinkable hydrophilic polymeric material to form a stable lubricious hydrogel coating thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.