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US 5,332,538 AGranted
Method for making a spacer element for a multi-pane sealed window
AssigneeGeneral Electric Company
InventorsLionel M. Levinson, William N. Schultz, Larry N. Lewis, Chris A. Sumpter, Judith Stein, Michael A. Zumbrum
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Abstract
A method is provided for making a rigid spacer, containing a silicone bound desiccant which is useful for a multi-pane sealed window. An infrared radiation curable silicone is used as a binder for a desiccant such as a zeolite which is injected in a continuous manner into a U-shaped or V-shaped semi-rigid spacer such as a steel channel.
Claims8
A method which comprises,
- (1) dispensing into a semi-rigid thermoplastic or metal spacer having a V-shaped or U-shaped channel and useful for a multi-pane sealed window, an infrared radiation sensitive heat curable silicone composition, and thereafter
- (2) exposing the dispensed infrared radiation curable silicone composition to infrared radiation have a wavelength of 700 to 10,000 nm and an intensity of at least 0.5 to 100 watts per cm.sup.2 until it is substantially cured, where the infrared sensitive heat curable silicone composition comprises by weight,
- (A) 100 parts of a poly(alkenylorganosiloxane),
- (B) 1 to 20 parts of a silicon hydride siloxane,
- (C) 0.0001 to 10.0 parts of an infrared radiation absorbent or scattering material,
- (D) an effective amount of a platinum group metal curing catalyst, and
- (E) 120 to 220 parts of a zeolite.
4 more elements
Dependencies are inferred from the claim text.