Tinting optical substrates
US7763313B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 2004 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Apr 25, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/05
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a method for tinting an optical substrate. The method includes the steps of applying a coating composition containing: • a polymerisable monomer having a polyoxyalkylene backbone containing at least four contiguous oxyalkylene units, and • an abrasion resistant agent and/or a high crosslinking polymerisable monomer to the optical substrate, polymerizing the coating composition to form an abrasion resistant coating layer, and introducing a tinting compound into the coating layer to thereby tint the optical substrate. The invention also provides a coating composition and an optical substrate that is tinted according to the method of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.