Silsesquioxane derivative and production process for the same

Details Silsesquioxane derivative and production process for the same Silsesquioxane derivative and production process for the same

2006-10-11

2008-11-11

Moore, Margaret G (Department: 1796)

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

Synthetic resins

From silicon reactant having at least one...

C528S036000, C528S030000, C528S031000, C528S032000, C556S460000, C556S417000, C556S429000, C556S438000, C556S451000, C556S455000, C556S452000

Reexamination Certificate

active

07449539

ABSTRACT:
The present inventors have obtained a PSQ derivative of a completely condensed type into which a functional group is readily introduced by using a novel PSQ derivative of an incompletely condensed type in which four alkaline metal atoms are bonded to silsesquioxane of a cage type having eight Si's. The above silsesquioxane derivative is represented by Formula (1). A silsesquioxane derivative to which alkaline metal atoms are bonded is represented by Formula (2). In Formula (1) and Formula (2), R is a group selected from alkyl, aryl and arylalkyl; Y is a group represented by Formula (a) or Formula (b); and M is a monovalent alkaline metal atom. X in Formula (a) and Formula (b) is hydrogen, halogen, a hydroxyl group or a monovalent organic group, and Z is —O—, —CH2— or a single bond. The preferred organic group is a functional group or a group having a functional group.

REFERENCES:
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Feher et al. “Practical methods for synthesizing four incompletely condensed silsesquioxanes from a single R8Si8O12 framework”, Chem. Commun., 1998, pp. 1279-1280.

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