Process for making non-dusting high lead oxide-low silica additi

Details Process for making non-dusting high lead oxide-low silica additi Process for making non-dusting high lead oxide-low silica additi

1982-03-19

1983-07-26

McCarthy, Helen M.

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

106 74, 501 27, 501 29, 501 74, C09C 114

Patent

active

043952917

ABSTRACT:
A lead additive containing a lead oxide and an alkaline silicate which is resistant to dusting, abrasion and segregation. The weight ratio of lead to alkaline silicate, calculated as PbO and SiO.sub.2, respectively, is greater than about 95:5; the moisture content is less than or equal to about 2%; and the density is less than about 5 g/cm.sup.3.
The process for producing these additives involve forming a paste of the lead oxide and alkaline silicate, conditioning the paste to form granules and heat treating the granules.

REFERENCES:
patent: 3623838 (1971-11-01), Kunz et al.
patent: 3956004 (1976-05-01), Sugahara et al.
Glastechnische Berichte, vol. 51, No. 12, Dec. 1978, p. 309 Table 1 (pp. 307-316).

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