Composition containing polymeric alkoxysilane and refractory mat

Details Composition containing polymeric alkoxysilane and refractory mat Composition containing polymeric alkoxysilane and refractory mat

1978-08-21

1980-03-04

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 383, 10628716, 164 43, 260375B, B28B 734

Patent

active

041915828

ABSTRACT:
Compositions containing certain polymeric alkoxysilanes and refractory materials.
The polymeric alkoxysilanes comprise a polymer network having the average formula: ##EQU1## wherein each R is an independently selected hydrocarbon or hydrocarbon ether radical, each R.sup.1 is an independently selected hydrocarbon radical, and all of said radicals are free of aliphatic unsaturation: a has a value from 1 to 3; and b has a value from 0.0001 to 1.0. These polymers are made by reacting an alkoxysilane of the formula Si(OR).sub.a O.sub.4-a/2 with water and with an organosulfonic acid of the formula R.sub.1 SO.sub.3 H. The compositions are useful for the preparation of investment casting molds.

REFERENCES:
patent: 3392036 (1968-07-01), McLeod
patent: 3804639 (1974-04-01), Trulsson et al.
patent: 4014703 (1977-03-01), Hayati et al.

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