Tinting optical substrates
AssigneeSola International Holdings Ltd.
InventorDavid Diggins
Life of this patent
Estimating the term…
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, polymerising 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.
Claims43
A method for tinting an optical substrate, the method including 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,
- polymerising 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.
A coating composition that is suitable for forming an abrasion resistant tintable coating layer on an optical substrate, the coating composition including:
- 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,
- wherein the coating composition is polymerisable to form an abrasion resistant coating layer on the optical substrate into which a tinting compound can be introduced.
Dependencies are inferred from the claim text.