Compositions: coating or plastic – Coating or plastic compositions – Proteinaceous material containing
Patent
1974-08-05
1976-08-31
Douglas, Winston A.
Compositions: coating or plastic
Coating or plastic compositions
Proteinaceous material containing
423555, C04B 1100
Patent
active
039778908
ABSTRACT:
A process is described for the formation of fibrous calcium sulfate hemihydrate, the fibers thereof having specified dimensions, wherein a dilute aqueous suspension of gypsum and, if desired, a crystal habit modifier is first formed. The gypsum in the suspension is then converted into fibrous hemihydrate by reaction in the presence of saturated steam at 120.degree. to 155.degree.C for 0.5 to 2.5 hours.
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patent: 757649 (1904-04-01), Brothers
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patent: 3084027 (1963-04-01), Hollingsworth et al.
patent: 3410655 (1968-11-01), Ruter et al.
patent: 3822340 (1974-07-01), Eberl et al.
patent: 3835219 (1974-09-01), Jaunarajs et al.
"Process for Making High Strength Plaster of Paris," Eberl, James J. and Ingram, Alvin R., Industrial and Engineering Chemistry, vol. 41, No. 5, pp. 1061-1065.
Jaunarajs Karlis L.
Yang Julie C.
Douglas Winston A.
Johns-Manville Corporation
Kelly Joseph J.
Krone Robert M.
McClain James W.
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