Deagglomerated barium sulfate

Details Deagglomerated barium sulfate Deagglomerated barium sulfate

2004-12-01

2010-12-07

Johnson, Edward M (Department: 1793)

Chemistry of inorganic compounds

With additive

Including anticaking or antihygroscopic function

C423S544000

Reexamination Certificate

active

07846409

ABSTRACT:
The invention discloses deagglomerated barium sulphate which has an average primary particle size of less than 0.5 μm and is coated with a dispersant. The dispersant has preferably reactive groups which are able to interact with the surface of the barium sulphate; particularly preferred dispersants are those which are able to endow the barium sulphate with a hydrophilic surface and have reactive groups for coupling to or into polymers. Also disclosed is a plastics premix comprising the deagglomerated, coated barium sulphate.

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