Facile synthesis of polyhedral silsesquioxane anions and use...

Details Facile synthesis of polyhedral silsesquioxane anions and use... Facile synthesis of polyhedral silsesquioxane anions and use...

2004-10-22

2009-08-18

Lorengo, Jerry (Department: 1793)

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

Synthetic resins

From silicon reactant having at least one...

C423S325000, C428S012000

Reexamination Certificate

active

07576169

ABSTRACT:
Polyhedral silsesquioxane anions are economically prepared by reaction of a silica source derived from combusted organic material with a quaternary ammonium hydroxide compound. Reaction of the resulting anions with chlorosilanes may be effected in near stoichiometric fashion in organic solvent containing reactive quantities of organic acids such as formic acid. The functional groups on the resulting functionalized silsesquioxanes may be substituted for other functional groups by reaction with di- or polysiloxanes in the presence of a synthetic ion exchange resin.

REFERENCES:
patent: 5047492 (1991-09-01), Weidner et al.
patent: 5330734 (1994-07-01), Johnson et al.
patent: 6288257 (2001-09-01), Schattenmann et al.
Hasegawa, Isao and Sumio Sakka. “Rapid Solidification of (2-Hydroxyethyl)trimethylammonium Silicate,” Chemistry Letters. 1988, pp. 1319-1322.
D. Hoebbel et al., Zeitschrift Für Anorganische Und Allgemeine Chemie, 384, pp. 43-52 (1971).
I. Hasegawa et al., Journal of Molecular Liquids, 34, pp. 307-315 (1987).
Hasegawa et al., J. Organometallic Chem., 441, pp. 373 (1992).
Hoebbel et al., Die Konstitution des Tetramethylammoniumsilicats de Zusammensetxung 1,0 N(C3)40H 1, 0 SiO2 8,0-8,3 H2O; Z. anorg. allg. Chem., 384, English Abstract and pp. 43-52 (1971).
Hoebbel et al., Synthese, Aufbau und Eigenschaften kafigartiger vinyl- und allyisilylierter Kieselsauren; Z. anorg. allg. Chem. 578 (1989), English Abstract and pp. 160-168.

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