Method for vacuum drying thixotropic agents and the resultant low moisture thixotrope
US4966871A · kind A · utility
4Cited by
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3Claims
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Key dates
| Filing date | Mar 10, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Mar 10, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B33/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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. The method involves 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., to preserve its thixotropic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.