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How to make pre-gel for organophilic clay ?

Organoclay disperses under high shear and requires a polar activator for best efficiency. Heat is not required to obtain good dispersion. Addition levels are typically in 0.2%~2.0%. Polar activator (95% Ethanol or 95% Methanol) is needed. Normally addition level of polar activator is recommended to be 40%~50% of modified bentonite in weight. If in xylene system, addition level of polar activator is about 30%-40% of rheology modifier in weight.

Pre-gel is made as below procedure.

1.Charge solvent to mill

2.Slowly add rheological additive(6-10% by weight of total pregel) to mill under agitation.

3.Mix at high speed for 5 minutes.

4.Add polar activator.

5.Mix at high speed for 5 minutes.

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