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US 12,221,555 B2Granted
Composition for coating the edge of an optical lens
AssigneeEssilor International
InventorsHui Yu, Sunil Madhukar Bhangale, Prakhar Kasture, Pierre Fromentin
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Abstract
The present invention relates to a cross-linkable composition comprising an epoxy oligomer comprising at least six hydroxy groups, to a coating obtained by curing the cross-linkable composition and to an optical lens comprising said coating on a surface thereof, in particular on the edge surface thereof. The invention also relates to a method of preparing a coating for an optical lens and to a method of coating a surface of an optical lens, in particular the edge surface of an optical lens.
Claims18
A cross-linkable composition comprising an epoxy oligomer of formula (I):
- wherein
- A is a residue of a diol;
- X is a substituted or unsubstituted hydrocarbylene;
- and
- n is 2, 3, 4, 5 or 6;
- and an opacifying agent.
3 more elements
Dependencies are inferred from the claim text.