Organic/inorganic composites

Details Organic/inorganic composites Organic/inorganic composites

1990-05-29

1992-03-17

Lipman, Bernard

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

428407, 525105, 525106, C08K 906

Patent

active

050969420

ABSTRACT:
Polymers such as phenyltrimethoxysilylterminated polystyrene are prehydrolyzed and then condensed with a metal alkoxide using acid catalyzed sol-gel reactions. The product is an organic/inorganic composite in which a metal polycondensate core is covalently bonded to a plurality of organic arms. The core has more metal atoms than heretofore obtainable. The process of this invention provides a means for introducing an inorganic phase into an organic polymer and maintaining solubility of the resulting composite in organic solvents. The products of this invention have a larger organic phase than products discussed in the literature. They also have residual chemical reactivity.

REFERENCES:
patent: 3655598 (1972-04-01), Antonen et al.
patent: 3817911 (1974-06-01), Taylor
Schmidt, Journal of Non-Crystalline Solids 73 (1985), 681-691.
Huang et al and Glaser et al, Polymer Bulletin 14, 557-564.
Mark, ChemTech Apr. 1989, pp. 230-233.
Laible et al, Advances in Colloid and Interface Science, 13ournal of Non-Crystalline Solids 73 (1985), 681-691.

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