Elements sensitive to certain polluting agents, particularly hyd

Details Elements sensitive to certain polluting agents, particularly hyd Elements sensitive to certain polluting agents, particularly hyd

1980-04-28

1982-09-28

Turk, Arnold

Chemistry: physical processes

Physical processes

Crystallization

23230L, 23232R, 73 611R, 200 6104, 210924, 340604, 340605, 422 68, 422 88, 423245, G01N 3300, G08B 2100, H01H 3500

Patent

active

043516424

ABSTRACT:
A sensitive element which deteriorates when contacted with the polluting agent, this material comprising a sequenced styrene-butadiene copolymer, of which at least a part is hydrogenated.
These elements can be used in pollution sensing devices, or for constituting at least a wall portion of a container housing a product for fighting against pollution.

REFERENCES:
patent: 2604423 (1952-07-01), Slotterbecke et al.
patent: 3470340 (1969-09-01), Hakka
patent: 3518183 (1970-06-01), Evans
patent: 3720797 (1973-03-01), Gunn et al.
patent: 3766295 (1973-10-01), Crossland et al.
patent: 3970863 (1976-07-01), Kishikawa et al.
patent: 4058802 (1977-11-01), Meyers
patent: 4125822 (1978-11-01), Perren et al.

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