Process for the manufacture of a fine white filler for industria

Details Process for the manufacture of a fine white filler for industria Process for the manufacture of a fine white filler for industria

1973-11-09

1977-01-11

Douglas, Winston A.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106100, C09C 102

Patent

active

040024849

ABSTRACT:
A substantially stoichiometric mixture of calcic aluminate and calcium sulphate, as white as possible, formed at a temperature in the range of about 20.degree. to 90.degree. C, is hydrated simultaneously; water is added at least in stoichiometric proportions for the reaction and at a maximum in an amount such that after the reaction a product is obtained containing 5% (dry) ettringite and 95% (by weight) water, stoichiometry being defined, for example by the reaction

REFERENCES:
patent: 2248032 (1941-07-01), Dunn et al.
patent: 3391995 (1968-07-01), Rosenstock et al.
patent: 3565648 (1971-02-01), Mori et al.

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