Readily dispersible bentonite
AssigneeHojun Kogyo Co., Ltd.
InventorsMitsuji Kondo, Takeo Sawada
Life of this patent
Estimating the term…
Abstract
Readily dispersible bentonite comprising bentonite particles having adsorbed an alkyl-substituted silane compound represented by formula (I) onto the surface thereof is disclosed: R.sub.a SiX.sub.b (I) wherein R represents an alkyl group having 1 to 18 carbon atoms; X represents a methoxy group, an ethoxy group or a halogen atom; a and b each represents 1, 2 or 3, provided that (a+b) is 4; in an amount of not more than 1% by weight based on the bentonite. When poured into water and stirred, the treated bentonite is rapidly dispersed while minimizing formation of hardly dispersible lumps of powder to provide an aqueous bentonite dispersion exhibiting satisfactory viscosity and water impermeability.
Claims2
Readily dispersible bentonite obtained by surface-treating bentonite with at least one alkyl-substituted silane compound represented by formula (I):
- R.sub.a SiX.sub.b (I)
- wherein R represents an alkyl group having 1 to 18 carbon atoms;
- X represents a methoxy group, an ethoxy group or a halogen atom;
- a and b each represents 1, 2 or 3, provided that (a+b) is 4;
- in an amount of not more than 1% by weight based on the bentonite.
Dependencies are inferred from the claim text.