Title:
MAGNESIUM FLUORIDE HYDRATE SOL AND PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JP3844787
Kind Code:
B2
Abstract:
PURPOSE: To obtain a magnesium fluoride hydrate sol and producing method thereof to be used as a coating material for an antireflection film.
CONSTITUTION: The sol consists of colloid particles of magnesium fluoride hydrate having MgF2.nH2O (n is 0.25 to 0.5) compsn. and 10-100nm primary particle size. The producing method of a water-base sol of the magnesium fluoride hydrate of this invention consists of processes (a) and (b). (a) An aq. soln. of fluoride is added to an aq. soln. of magnesium salt by the molar ratio of F/Mg=1.9 to 2.0 to produce an aggregation slurry of colloid particles of magnesium fluoride hydrate. (b) Byproduct salts in the slurry are removed. The production of the organosol consists of processes (a), (b) and (c). (c) An org. solvent is substituted for the water in the water-based sol.
Inventors:
Watanabe
Keitaro Suzuki
Keitaro Suzuki
Application Number:
JP21866693A
Publication Date:
November 15, 2006
Filing Date:
September 02, 1993
Export Citation:
Assignee:
Nissan Chemical Industry Co., Ltd.
International Classes:
B01J13/00; C01F5/28; (IPC1-7): C01F5/28; B01J13/00
Domestic Patent References:
| JP226824A |