Method for surface treating thixotropic agents and the resultant

Details Method for surface treating thixotropic agents and the resultant Method for surface treating thixotropic agents and the resultant

1990-03-05

1991-09-17

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Clay containing

501150, C04B 3330

Patent

active

050495321

ABSTRACT:
A method for producing an attapulgite clay which retains its thixotropic properties, but does not release gases upon being compounded and cured in organic binder systems, such as plastisol, and the resultant low moisture thixotrope. The method involves (1) reducing the moisture content of the attapulgite by heating it under vacuum at an elevated temperature, preferably between 100.degree. C. and 300.degree. C., or (2) reducing the moisture content of the attapulgite by heating it at an elevated temperature, preferably between 100.degree. C. and 350.degree. C., and adding a silicone fluid, to preserve its thixotropic properties.

REFERENCES:
patent: 2490357 (1949-12-01), Hyde
patent: 2541137 (1951-02-01), Warrick
patent: 2983620 (1961-05-01), Haire
patent: 3148169 (1964-09-01), Martens
patent: 4966871 (1990-10-01), Brooks

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