Heat reflecting pane and a method of producing it

Details Heat reflecting pane and a method of producing it Heat reflecting pane and a method of producing it

1979-01-02

1980-08-05

Hoffman, James R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

427160, 427166, 428432, C03C 1722, B05D 506, B05D 302, B05D 304

Patent

active

042162599

ABSTRACT:
A heat-reflecting pane consists of a substantially transparent glass substrate with two layers of titanium oxide, the outside layer being in the rutile form with the intermediate layer being in the anatase form. The pane is formed by double coating the glass substrate with layers of titanium applied by vacuum deposition. A weaker vacuum is used to obtain the anatase form with a stronger vacuum used to obtain the rutile form. Both layers are then oxidized at temperatures of at least 550.degree. C. to form TiO.sub.2. The intermediate layer of TiO.sub.2 in the anatase form prevents the rutile layer from becoming opaque when the pane is heated to the temperature necessary for heat treatment of the glass substrate. The treatment may be effected either during the heating step in which the titanium is oxidized or in a subsequent additional heating step.

REFERENCES:
patent: 2784115 (1957-03-01), Brinsmaid et al.
patent: 2920002 (1960-01-01), Auwarter
patent: 3437515 (1969-04-01), Quinn et al.
patent: 3927228 (1975-12-01), Pulker

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