Process for manufacturing ultra pure silica and resulting encaps

Details Process for manufacturing ultra pure silica and resulting encaps Process for manufacturing ultra pure silica and resulting encaps

1986-09-10

1989-03-07

Terapane, John F.

Compositions

Chemically interactive reactants

Organic reactant admixed with inorganic reactant

2523156, 423335, 423338, 423339, 10628734, C01B 3312, C01B 3318, C09K 300

Patent

active

048104159

ABSTRACT:
High purity silica powder formed from a sol-gel process is made from a quantity of an industrial grade hydrolizable silicon organometallic substance mixed with a quantity of an industrial grade organic solvent miscible in said organometallic substance and with a quantity of an acidified water having a pH less than 2 to form a solution. The solution is heated, then dried to form a gel, milled, and calcined to form the pure silica powder and the pure powder used to form encapsulated micro-miniature circuits.

REFERENCES:
patent: 3672833 (1971-02-01), Teichner et al.
patent: 4006175 (1977-02-01), Termin et al.
patent: 4053565 (1977-10-01), Krekeler et al.
patent: 4070286 (1978-01-01), Iler et al.
patent: 4228261 (1980-10-01), Scholten
patent: 4243422 (1981-01-01), Lenz et al.
patent: 4249903 (1981-02-01), Smolka et al.
patent: 4327065 (1982-04-01), von Dardel et al.
patent: 4619908 (1986-10-01), Cheng et al.

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