G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 3/12 (2006.01) B01J 13/00 (2006.01) G01M 3/04 (2006.01) G01M 3/14 (2006.01)
Patent
CA 2286713
There is provided a composition for the detection of an electrophilic gas, such as chlorodifluoromethane or carbon dioxide, which comprises a Lewis base capable of removing a proton from the gas or reacting therewith in a similar electrophilic manner; a dye capable of visibly indicating a color change on protonation or deprotonation; a solvent for the dye, the base and the gas; and a rheology modifier capable of producing a non-newtonian gel of all of these components which is sufficiently translucent to permit visual detection of change of color of the dye and of sufficient pseudoplasticity/thixotropy to provide adhesion to vertical and horizontal surfaces.
Composition pour la détection d'un gaz électrophile, tel que le chlorodifluorométhane ou le dioxyde de carbone, qui contient une base de Lewis capable d'enlever un proton du gaz ou de réagir avec ce dernier d'une manière électrophile similaire, un colorant capable d'indiquer visiblement un changement de couleur en cas de protonation ou de déprotonation, un solvant pour le colorant, la base et le gaz, et un modificateur de rhéologie capable de produire un gel non newtonien à partir de tous ces constituants, qui est suffisamment translucide pour permettre la détection visuelle du changement de couleur du colorant et d'une pseudoplasticité/thixotropie suffisantes pour permettre l'adhérence à des surfaces horizontales et verticales.
Kaiser Stewart R.
Verdicchio Robert J.
Walsh Shawn
Goudreau Gage Dubuc
R-Tec Technologies Inc.
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