Fibrous calcium sulfate

Details Fibrous calcium sulfate Fibrous calcium sulfate

1977-11-25

1979-05-01

Poer, James

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

106109, C01F 1146, C04B 1100

Patent

active

041524080

ABSTRACT:
Fibrous calcium sulfate is produced by autoclaving a dilute aqueous suspension of gypsum, at a temperature between the minimum fiber forming temperature and about 20.degree. C. above, in the presence of a dispersing agent to provide for discrete whisker crystal development and protecting the whisker crystals from destruction or conversion to a different physical or chemical form until they have been stabilized by calcining at a temperature in excess of 500.degree. C.

REFERENCES:
patent: 3822340 (1974-07-01), Eberl et al.
patent: 3835219 (1974-09-01), Jaunarajs et al.
patent: 3961105 (1976-06-01), Eberl et al.
patent: 3977890 (1976-08-01), Jaunarajs et al.
patent: 4029512 (1977-06-01), Jaunarajs et al.

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