Precipitated silica beads

Details Precipitated silica beads Precipitated silica beads

1990-05-02

2000-08-22

Fourson, George

Compositions: ceramic

Ceramic compositions

Refractory

423339, C04B 3514

Patent

active

061072265

ABSTRACT:
Essentially spherical precipitated silica beads, well adapted for the reinforcement of elastomeric matrices, have a mean particle size of at least 80 .mu.m, a BET specific surface area ranging from 60 to 130 m.sup.2 /g, a fill density in packed state ranging from 0.28 to 0.37, and a total pore volume ranging from 1.6 to 3.3 cm.sup.3 /g.

REFERENCES:
patent: 3383172 (1968-05-01), Biegler et al.
patent: 3669624 (1972-06-01), Warthen et al.
patent: 3923533 (1975-12-01), Hammel et al.
patent: 4508607 (1985-04-01), Winyall
patent: 4704374 (1987-11-01), Jacques
patent: 4738838 (1988-04-01), Shinpo et al.
patent: 4778667 (1988-10-01), Garvey et al.
Chemical Abstracts, "Manufacture of Inorganic Oxide Powders", vol. 106, No. 18, Reference No. 140518g, p. 128, May 4, 1987.

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