Title: Modified clays and methods for making and using the same
Application Number: 02814142 Application Date: 2002.09.25
Publication Number: 1527798 Publication Date: 2004.09.08
Approval Pub. Date: 2006.11.22 Granted Pub. Date: 2006.11.22
International Classifi-cation: C01B33/44,B01J39/14,C08K9/04
Applicant(s) Name: Rohm Address:
Inventor(s) Name: D.P. Lorah, R.V. Slone
Attorney & Agent: cai shengwei
Abstract:
     Processes for modifying the surface chemistry of a clay are disclosed. In one embodiment, there is provided a process for modifying the surface chemistry of a clay, wherein the process comprises: providing a clay dispersion comprising at least one unmodified clay wherein said clay has a first exchangeable cation; adding a second cation to the clay dispersion, wherein at least a portion of the second cation exchanges with at least a portion of the first cation to form a modified clay dispersion; and combining at least one polar containing agent with the modified clay dispersion to provide a modified clay.
Time: 5