Coloration of acetylenic monomers by gases

Details Coloration of acetylenic monomers by gases Coloration of acetylenic monomers by gases

1980-11-19

1985-10-29

Barr, Josephine L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526235, 526236, 526237, 526238, 526285, 2524081, 116207, 116216, C08F 200, C08F 400, C09K 300

Patent

active

045501505

ABSTRACT:
Process of detecting the presence of certain gases, including certain pollutants, in small concentrations; or to cause partial polymerization of certain polyacetylene compositions for use in time/temperature history indicators or radiation dosage indicators. The process involves contacting a reactive gas, such as a nitrogen oxide, a halide or ozone, with a crystalline substituted acetylenic monomer containing at least two conjugated triple bonds and substituents having at least one atom of oxygen or nitrogen. In particular the acetylenic compound is 2,4-hexadiyne-1,6-bis(phenylurethane) crystallized from tetrahydrofuran or acetone.

REFERENCES:
patent: 3562230 (1971-02-01), D'Alelio et al.
patent: 3671604 (1972-06-01), Rutledge
patent: 3852235 (1974-12-01), Krutchen
patent: 3999946 (1976-12-01), Patel et al.
patent: 4215208 (1980-07-01), Yee et al.
patent: 4373032 (1983-02-01), Preziosi et al.
patent: 4487709 (1984-12-01), Kobayashi et al.

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