Method for settling a glass suspension using preferential polar

Details Method for settling a glass suspension using preferential polar Method for settling a glass suspension using preferential polar

1975-01-13

1977-08-02

Smith, Ronald H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427193, 427240, 427299, 427344, 427376A, 427430R, B05D 512

Patent

active

040397025

ABSTRACT:
A method for settling suspended glass particles from a slurry containing small amounts of a substance, which substance is preferentially adsorbed to the surface of the suspended glass particles, and which adsorbed substance facilitates centrifugal sedimentation of the glass particles without substantially altering the colloidal nature of the suspension. In particular, a method for forming a glass film on a semiconductive wafer or circuit, especially mesa etched structures, including the step of adding a small amount of hydrogen peroxide to the glass slurry before sedimentation of the glass film.

REFERENCES:
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patent: 2576845 (1951-11-01), McDonald
patent: 2898232 (1959-08-01), Miller et al.
patent: 3212921 (1965-10-01), Pliskin et al.
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patent: 3748156 (1973-07-01), Moore
patent: 3748157 (1973-07-01), Moore
patent: 3752679 (1973-08-01), Moore
patent: 3752681 (1973-08-01), Moore
patent: 3752689 (1973-08-01), Moore
patent: 3754945 (1973-08-01), Moore
patent: 3754946 (1973-08-01), Moore

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