Technique for forming, by pyrolysis in a gaseous process, a coat

Details Technique for forming, by pyrolysis in a gaseous process, a coat Technique for forming, by pyrolysis in a gaseous process, a coat

1992-06-12

1994-04-19

Beck, Shrive

Coating processes

Optical element produced

Transparent base

427167, 427255, 4272551, 4272554, 4272555, 65 608, B05D 506, C23C 1600

Patent

active

053043944

ABSTRACT:
For forming by pyrolysis a coating based upon silicon, oxygen and carbon, on the surface of a moving glass substrates from a percursor gaseous mixture essentially without any oxidizing component and comprising a silane and an ethylenic compound, the contact time between this precursor mixture and the glass is maintained at a value greater than that necessary for the deposition of the coating if this were performed from a precursor gaseous mixture containing an oxidizing agent. The coating thus obtained has a refractive index lying between 1.45 and 2, preferably between 1.6 and 1.9, and its thickness reaches values greater than 50 mm.

REFERENCES:
patent: 5041150 (1991-08-01), Grundy et al.

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