Processes for manufacturing thin membranes composed of an organi

Details Processes for manufacturing thin membranes composed of an organi Processes for manufacturing thin membranes composed of an organi

1987-11-23

1989-03-21

Dixon, Jr., William R.

Coating processes

Heat decomposition of applied coating or base material

427215, 427244, 427379, 501133, B05D 302, B05D 500, C04B 3514

Patent

active

048142026

ABSTRACT:
This invention relates to processes for manufacturing thin membranes composed of an inorganic lattice of titanium and silicon oxides, wherein one or more titanium alkoxides and one or more silicon alkoxides are placed in solution in the same solvent, in order to obtain mixed titanium and silicon alkoxides; these mixed alkoxides are partially hydrolyzed by adding a basic aqueous solution having a pH of between 11 and 12; a layer of hydrolyzed solution is applied on a substrate; the particles in suspension are separated; the residual alkyl groups are eliminated by evaporation, and baking is effected at a temperature of between 700.degree. and 1250.degree. C.

REFERENCES:
patent: 2472831 (1949-06-01), Hunter
patent: 3926799 (1975-12-01), Thomas
patent: 4649037 (1987-03-01), Marsh et al.
patent: 4687652 (1987-08-01), Yoldas et al.
Technical publication Vide, "Utilization Des Procedes Sol Gel Pour L'Oblention De Couches Minces Ceramiques", vol. 40, No. 227, pp. 277-280.

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