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:
Nov. 11, 1986
Filed:
May. 16, 1985
Kenneth Chyung, Painted Post, NY (US);
Thomas J Dwyer, Painted Post, NY (US);
Gordon F Foster, Campbell, NY (US);
Robert D Shoup, Corning, NY (US);
Roger A Young, Corning, NY (US);
Corning Glass Works, Corning, NY (US);
Abstract
The instant invention is directed to the production of boards and other relatively thick-walled shapes of various configurations from inorganic silicates. The method for preparing such products involves five general steps: first a fully or predominantly crystalline body is formed containing crystals consisting essentially of a lithium and/or sodium water-swelling mica selected from the group of fluorhectorite, boron fluorphlogopite, and solid solutions therebetween; second, that body is contacted with a polar liquid, customarily water, to cause swelling and disintegration of the body accompanied with the formation of a gel; third, the gel is contacted with a source of large cations to effect an ion exchange reaction between the large cations and the Li.sup.+ and/or Na.sup.+ ions in the gel and to cause flocculation of the gel; fourth, the floc is substantially separated from the polar liquid and a shape of a desired geometry formed therefrom; and, fifth, the shaped body is fired at a temperature in excess of 700.degree. C., but below about 1100.degree. C., to minimize the normal hygroscopic tendencies in the materials.