The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 1980
Filed:
Aug. 21, 1978
Walter L Magee, Jr, Danbury, CT (US);
Stauffer Chemical Company, Westport, CT (US);
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.