Method for the production of an optical article with improved anti-fouling properties
US9726787B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2013 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Dec 26, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is dedicated to a method for the manufacture of an optical article comprising the following steps: providing a substrate having two main faces and bearing —OH functions on at least one of its faces, successively exposing one face of the substrate bearing —OH functions to at least 2 distinct materials named M1 and M2, M1 having a weight average molecular weight higher than M2, in a vacuum chamber under conditions resulting in the deposit of those materials on the surface of the substrate, and wherein: M1 is a substituted silane comprising: at least one function X1 bonded to a silicon atom, wherein the Si—X1 group is capable of forming a covalent bond with a —OH group of the substrate and/or a covalent bond with M2, and at least one fluorine containing group, M2 is a substituted silane having a number average molecular weight inferior or equal to 900 g/mol, comprising: at least one function X2 bonded to a silicon atom, wherein the Si—X2 group is capable of forming a covalent bond with a —OH group of the substrate and/or a covalent bond with M1, and at least one hydrophobic and/or oleophobic group, or at least one hydrophilic group, wherein the difference between…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.