Invention Grant
- Patent Title: Coating with photochromic properties, method for producing said coating and use thereof applicable to optical articles and glazed surfaces
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Application No.: US14382826Application Date: 2013-03-05
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Publication No.: US09885808B2Publication Date: 2018-02-06
- Inventor: Jordi Hernando Campos , Claudio Roscini , Nuria Alexandra Vazquez Mera , Daniel Ruiz Molina
- Applicant: CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS (CSIC)
- Applicant Address: ES Madrid
- Assignee: CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS(CSIC)
- Current Assignee: CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS(CSIC)
- Current Assignee Address: ES Madrid
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: ES201200238 20120308
- International Application: PCT/ES2013/070132 WO 20130305
- International Announcement: WO2013/132123 WO 20130912
- Main IPC: B01J13/16
- IPC: B01J13/16 ; G02B1/10 ; G02B5/23 ; B05D5/06 ; G02B1/04 ; G03C1/00 ; G03C1/73 ; C09B23/01 ; G02B5/20

Abstract:
Coating with photochromic properties, method for producing said coating and use thereof applicable to optical articles and glazed surfaces. The coating is formed by the combination of the following three elements: (1) a polymeric matrix, which is typically rigid and deposited on the surface of interest; (2) hollow, sealed micro- and/or nanocapsules dispersed within said matrix; and (3) solutions of photochromic compounds (chosen from a group comprising spirooxazine, azobenzenes or chromenes) in a liquid solvent that does not react (with the photochromic compound and with the capsule wall), which are encapsulated inside said micro- or nanocapsules.
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