Use of polymeric catalyst in synthesis of sol-gel derived cerami

Details Use of polymeric catalyst in synthesis of sol-gel derived cerami Use of polymeric catalyst in synthesis of sol-gel derived cerami

1989-08-10

1994-05-31

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

2523152, 501 12, 502159, B01J 1300, C03C 306

Patent

active

053166957

ABSTRACT:
Polymeric catalysts (e.g., polymeric acid catalysts such as poly(styrene)sulfonic acid) can be used in the synthesis of sol-gel derived ceramic materials from metal alkoxides, for example, organic/inorganic hybrid materials formed by reaction of a metal alkoxide and a reactive endcapped polymeric modifier. The use of a polymeric catalyst, rather than a conventional monomeric (inorganic or organic) acid catalyst, has a non-deleterious effect on the aging behavior and offers potential for control of rheological properties (spinnability, coatability, etc.) of the hybrid materials.

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Nakanishi et al.: "Crystallization of Silica Gels Containing Sodium Poly-4-Styrene Sulfonate", Journal of Non-Crystalline Solids, 108 (1989) 157-162.
"The Sol-Gel Process", Chemical Reviews, 1990, vol. 90, No. 1, p. 35.

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