Hollow glass spheres

Details Hollow glass spheres Hollow glass spheres

1991-01-04

1993-06-08

Brunsman, David

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 39, 501 57, 501 58, 501 59, 501 63, 501 67, 501 68, 501 69, 501 70, 501 72, 524494, C03C 1200

Patent

active

052179281

ABSTRACT:
Hollow glass spheres having average densities of approximately 0.10 grams/cc to approximately 2.0 grams/cc are prepared by heating solid glass particles. The glass spheres consist essentially of the following ingredients in the following amounts stated as weight percentages: SiO.sub.2 (50 to 57%); R.sub.2 0(2 to 15%); B.sub.2 O.sub.3 (0 to 20%); S(0.05 to 1.5%); RO(2 to 25%); RO.sub.2 (other than SiO.sub.2) (0 to 5%); R.sub.2 O.sub.3 (other than B.sub.2 O.sub.3) (0 to 10%); R.sub.2 O.sub.5 (0 to 5%); and F(0 to 5%). R represents a metal or an element like phosphorous which combines with oxygen in glass. The sizes of the hollow glass spheres are selected to produce a maximum average strength for a desired average density.

REFERENCES:
patent: 3365315 (1968-01-01), Beck et al.
patent: 3429721 (1969-02-01), Sprout
patent: 3519446 (1970-07-01), Earl
patent: 4391646 (1983-07-01), Howell
patent: 4661137 (1987-04-01), Garnier et al.
patent: 4677022 (1987-06-01), Dejaiffa
patent: 4767726 (1988-08-01), Marhshall
patent: 4904293 (1990-02-01), Garnier et al.
patent: 4983550 (1991-01-01), Goetz et al.
patent: 5064784 (1991-11-01), Saito et al.
Volf, Chemical Approach to Glass, (7), pp. 219-221, 418-421, 408-418, 1985.
Budov, et al., USSR Counsel of Ministers' Committee for Inventions No. 1451105, published Jan. 15, 1989.
Chemical Abstracts 107: 119955H (1987).
Glass and Ceramics, vol. 45. No. 8, Aug., 1988, pp. 289-291.
Chemical Abstracts 88: 196379Q (1978).
Chemical Abstracts 109: 1065OV (1988).

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