Method for making rare earth metal oxide ceramic precursor compo

Details Method for making rare earth metal oxide ceramic precursor compo Method for making rare earth metal oxide ceramic precursor compo

1996-05-13

1997-09-02

Brunsman, David

Compositions: coating or plastic

Coating or plastic compositions

Heavy metal compound containing

136253, C07F 500, C09K 300

Patent

active

056627378

ABSTRACT:
A method for making rare earth metal oxide ceramic precursor composition comprising reacting a rare earth metal alkoxide with a complexing agent to give a mixture of complexing agent/alkoxide rare earth metal complexes is disclosed. The mixture is hydrolyzed and the precursor composition is isolated. Solubility of the precursor composition in non-polar or polar solvents is affected by the selection of complexing agent amongst other factors. At least partial dissolution of the precursor composition in a solvent gives a preceramic liquid which upon evaporation of the solvent and heating gives a rare earth metal oxide ceramic. Utility of the preceramic liquid include the formation of rare earth metal oxide fibers, thin films, coatings, foams, powders, cast or molded objects or it may be used as a ceramic adhesive.

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