Thermometric compositions including inert additives and products

Details Thermometric compositions including inert additives and products Thermometric compositions including inert additives and products

1974-06-19

1976-08-10

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

23230LC, 73356, 252299, 252408, 428 1, C09K 334, G01K 1112, G01N 3122

Patent

active

039743179

ABSTRACT:
Thermometric compositions for recording changes in temperature comprising a cholesteric liquid crystal system together with a chemically inert substance which is miscible with the crystal system. By varying the amount of the second component in the composition, the clearing point of the composition, that is the temperature at which there is a phase change to the isotropic phase, can be varied in a predictable manner.

REFERENCES:
patent: 3619254 (1971-11-01), Davis
patent: 3795529 (1974-03-01), Cartmell et al.

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