Invention Grant
US09156995B2 Preparation of stable metal oxide sols, notably for making thin abrasion-resistant films with optical properties
有权
制备稳定的金属氧化物溶胶，特别是制备具有光学性能的薄耐磨膜
- Patent Title: Preparation of stable metal oxide sols, notably for making thin abrasion-resistant films with optical properties
- Patent Title (中): 制备稳定的金属氧化物溶胶，特别是制备具有光学性能的薄耐磨膜
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Application No.: US13989796Application Date: 2011-11-24
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Publication No.: US09156995B2Publication Date: 2015-10-13
- Inventor: Philippe Belleville , Philippe Prene , Xavier Le Guevel
- Applicant: Philippe Belleville , Philippe Prene , Xavier Le Guevel
- Applicant Address: FR Paris
- Assignee: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
- Current Assignee: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
- Current Assignee Address: FR Paris
- Agency: Hultquist, PLLC
- Agent Mary B. Grant
- Priority: FR1059774 20101126
- International Application: PCT/EP2011/070905 WO 20111124
- International Announcement: WO2012/069570 WO 20120531
- Main IPC: C09D5/00
- IPC: C09D5/00 ; C01B33/141 ; C01B33/142 ; C01G25/02 ; C03C17/25 ; C01G23/053 ; C01F7/34 ; C01F7/36
Abstract:
The invention relates to a method for preparing sols of metal oxides, with an aqueous component, which are stable over time and which notably allow the making of thin films having both remarkable optical and abrasion resistance properties.This method comprises: (i) replacing with water all or part of the alcohol or of the alcohols present in an alcoholic sol of a metal oxide, with a neutral or basic pH, and optionally (ii) adjusting the pH of the thereby obtained aqueous or partly aqueous sol to a value of at least 8.The invention also relates to a method for making films from these sols and, in particular, thin films with optical properties and resistant to abrasion.Applications: making optical components for power lasers, making optical fibers, cathodic tubes, etc.
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