Bodies with reversibly variable temperature-dependent light...

Details Bodies with reversibly variable temperature-dependent light... Bodies with reversibly variable temperature-dependent light...

G - Physics

01

K

18/103, 31/105

G01K 11/16 (2006.01) F24J 2/40 (2006.01) F24J 2/50 (2006.01)

Patent

CA 1111633

ABSTRACT OF THE DISCLOSURE In order, in the case of bodies with reversibly-variable absorbence, to adjust the zone of transition from transparent to opaque or vice versa at desired goal temperatures and to give the bodies a preferred form,' such as sheet form, they consist of a substantially optically transparent polymeric and/or resinous matrix material (A) and an organic substance (B) which is embedded therein as a dispersed second phase and which is at least partially insoluble therein, and which melts or congeals at the goal temperature of light-absorbence variation at the goal temperature of light-absorbence variation, and the refractive index of which, either above or below the goal temperature of the light-absorbence variation, substantially agrees with the refractive index of the matrix material. Such bodies are usable in sheet (or film) form, for example, for temperature-measuring devices, temperature-indicating devices, and slippery-ice warning devices, as well as for devices on glass windows for protection against solar irradiation.

309091

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