Environmentally friendly de-icer and anti-icer compositions

Details Environmentally friendly de-icer and anti-icer compositions Environmentally friendly de-icer and anti-icer compositions

C - Chemistry, Metallurgy

09

K

C09K 3/18 (2006.01)

Patent

CA 2387923

The invention relates to ice control formulations (deicing and anti-icing compositions) that have a tailorable BOD. The deicing compositions of the present invention comprise a) at least one first freezing point depressant (FPD) that is non-toxic, biodegradable and has a certain rate of degradation; b) at least one second FPD that is non-toxic, biodegradable, wherein the second FPD has a rate of degradation that is different from the rate of degradation of the first FPD; and c) at least one surfactant, wherein the surfactant is non-ionic, non-toxic and biodegradable, and wherein the first FPD of (a) and the second FPD of (b) are present in a ratio that provides a composition that has a predetermined biochemical oxygen demand (BOD). The invention further provides anti-icing compositions which further comprise a thickener.

L'invention concerne des formulations de contrôle de la glace (compositions dégivrantes et antigivrantes) présentant une DBO adaptable. Les compositions dégivrantes selon l'invention contiennent a) au moins un premier additif antigel non-toxique, biodégradable, et présentant une certaine vitesse de dégradation, b) au moins un deuxième additif antigel non-toxique, biodégradable, le deuxième additif antigel présentant une vitesse de dégradation différente de celle du premier additif antigel, et c) au moins un surfactant non-ionique, non-toxique, et biodégradable, le premier additif antigel selon a) et le deuxième antigel selon b) étant présents dans une proportion donnant une composition qui présente une demande biochimique d'oxygène (DBO) prédéterminée. L'invention concerne également des compositions antigivrantes contenant en outre un épaississant.

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