Invention Grant
- Patent Title: Composition for the manufacture of an ophthalmic lens comprising an UV-absorber and an anti-yellowing additive
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Application No.: US15319260Application Date: 2015-06-23
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Publication No.: US10370520B2Publication Date: 2019-08-06
- Inventor: Pierre Fromentin
- Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
- Applicant Address: FR Charenton-le-Pont
- Assignee: Essilor International
- Current Assignee: Essilor International
- Current Assignee Address: FR Charenton-le-Pont
- Agency: Norton Rose Fulbright US LLP
- Priority: EP14305987 20140624
- International Application: PCT/EP2015/064156 WO 20150623
- International Announcement: WO2015/197649 WO 20151230
- Main IPC: G02B1/04
- IPC: G02B1/04 ; C08K5/3435 ; C08K5/3475 ; C08K5/3492 ; C08K5/372
Abstract:
The present invention relates to a thermosetting composition for the manufacture of an ophthalmic lens which efficiently absorbs ultraviolet (UV) rays without exhibiting undesirable yellowing, said composition comprising an allyl monomer or oligomer, a catalyst, a UV-absorber and a specific anti-yellowing additive. The present invention also relates to the use of said composition and to the ophthalmic lens obtained from said composition.
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