Inorganic filler and process for production thereof

Details Inorganic filler and process for production thereof Inorganic filler and process for production thereof

1985-03-26

1986-12-02

Lieberman, Paul

Compositions: coating or plastic

Materials or ingredients

501147, C04B 1400

Patent

active

046262903

ABSTRACT:
An inorganic filler composed of a modified montmorillonite group clay mineral and having an X-ray diffraction pattern inherent to montmorillonite, an oil absorption of at least 100 ml/100 g and a Hunter whiteness of at least 80%. The modified clay mineral is produced by reacting a clay mineral of the montmorillonite group which 10 to 200% by weight based on the dry weight of the mineral, of an alkaline earth metal hydroxide in the presence of water, and reacting the reaction product with a salt of a metal of Group IIb, III or IV of the periodic table containing an acid radical which gives a soluble alkaline earth metal salt upon reaction. The inorganic filler is especially suitable for use in lightweight paper.

REFERENCES:
patent: 3753761 (1973-08-01), Sugahara et al.
patent: 3993500 (1976-11-01), Isaac et al.
patent: 4028133 (1977-06-01), Isaac et al.
patent: 4053324 (1977-10-01), Haden, Jr. et al.
patent: 4128263 (1978-12-01), Traxler

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