Irritant-free gel compositions

F - Mech Eng,Light,Heat,Weapons – 41 – H

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F41H 9/10 (2006.01) C06D 7/00 (2006.01)

Patent

CA 2598898

Irritant-free gel compositions according to the present invention include less than 5 parts by weight of one or more marking agents, 0.25 - 2 parts by weight of a thickening agent; and 30 - 90 parts by weight water. The thickening agent is typically a vegetable gum. In some embodiments, the compositions may additionally include 20 60 parts by weight of at least one water-miscible solvent, such as monohydric alcohols, polyhydric alcohols and mixtures thereof. The water-miscible solvent may be methyl alcohol, ethyl alcohol, isopropyl alcohol, n-propyl alcohol, ethylene glycol, propylene glycol or a mixture thereof, and preferably a mixture of isopropyl alcohol and propylene glycol.

La présente invention concerne des compositions de gel sans composé irritant comprenant moins de 5 parties en poids d'un ou plusieurs agents de marquage, 0,25-2 parties en poids d'un agent épaississant ; et 30-90 parties en poids d'eau. L'agent épaississant est typiquement une gomme végétale. Dans certains modes de réalisation, les compositions peuvent en plus comprendre 20-60 parties en poids d'au moins un solvant miscible avec l'eau, tel que des monoalcools, des polyols et des mélanges de ceux-ci. Le solvant miscible avec l'eau peut être l'alcool méthylique, l'alcool éthylique, l'alcool isopropylique, l'alcool n-propylique, l'éthylèneglycol, le propylèneglycol ou un mélange de ceux-ci et de préférence un mélange d'alcool isopropylique et de propylèneglycol.

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