Process for preparing titanates and zirconates

Details Process for preparing titanates and zirconates Process for preparing titanates and zirconates

1988-08-26

1990-06-26

Hearn, Brian E.

Compositions: ceramic

Ceramic compositions

Refractory

501135, 501136, 501137, 423598, C04B 3548, C04B 3549, C04B 3546

Patent

active

049372130

ABSTRACT:
The invention concerns a process for preparing titanates and zirconates respectively of formulas MTiO.sub.3 and MZrO.sub.3 where M is Ba.sup.2+, Sr.sup.2+, Ca.sup.2+, Pb.sup.2+ and Mg.sup.2+ to the exclusion of MgZro.sub.3, consisting of reacting an ester of formula M[H-(CH.sub.2).sub.n CO.sub.2 ].sub.2 where n=1-4 with the formula M'[O(CH.sub.2).sub.n CH.sub.2).sub.n CH.sub.3 ].sub.4 where M' is Ti or Zr bringing the reaction mixture to boil until the solvent is removed to yield a viscous translucent resin. The resin is cooled and further treated to obtain the desired product.

REFERENCES:
patent: 3331659 (1967-07-01), Malloy
patent: 4520114 (1985-05-01), David
patent: 4636378 (1987-01-01), Pastor et al.
patent: 4636908 (1987-01-01), Yoshihara et al.
patent: 4670243 (1987-06-01), Wilson et al.
patent: 4713233 (1987-12-01), Marsh et al.
Ultrastructure Processing of Ceramics, Glasses, and Composites, eds: L. Hench et al., John Wiley & Sons, NY (1984), pp. 108, 152-160.

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