Temperature indicating device using a pressure sensitive polyiso

Details Temperature indicating device using a pressure sensitive polyiso Temperature indicating device using a pressure sensitive polyiso

1978-04-13

1980-02-26

Hess, Bruce H.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73358, 116216, 116219, 428164, 428165, 428336, 428339, 428462, 428521, 428913, G01K 1108, G01K 1112, B32B 326

Patent

active

041899423

ABSTRACT:
There is provided a temperature indicating device such as a thermometer having a thermally conductive foil as a carrier layer, the carrier layer having one or more cavities formed by depression in the foil material. The depressions are filled with solid mixtures which melt at predetermined temperatures and are composed of ortho-chloronitrobenzene, ortho-bromonitrobenzene, and a dyestuff. A transparent cover layer seals the cavities and their contents. The transparent cover layer and carrier layer are bonded to each other by means of a pressure-sensitive adhesive which includes polyisobutylene.

REFERENCES:
patent: 3002385 (1961-10-01), Wahl et al.
patent: 3704985 (1972-12-01), Pickett et al.
patent: 3765243 (1973-10-01), Pickett et al.
patent: 3826141 (1974-07-01), Pickett et al.
patent: 3922917 (1975-12-01), Ayres
patent: 3946612 (1976-03-01), Sagi et al.
Houwink et al., Adhesion and Adhesives, Elsevier Pub. Co., N.Y., vol. 2, 1967, p. 36.
Colour Index, 3rd Ed., vol. 3, 1971, pp. 3563, 3564, 3620, 3621, 3624, 3625, 3626, 3627, 3602, 3603, 3588, 3589, 3634, 3635.

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