US 12,286,607 B2
Composition for removing chemical residues and uses thereof
Aurélien Duval, Rueil Malmaison (FR); and Joël Blomet, Valmondois (FR)
Assigned to PREVOR INTERNATIONAL, Paris (FR)
Appl. No. 17/432,209
Filed by PREVOR INTERNATIONAL, Paris (FR)
PCT Filed Feb. 20, 2020, PCT No. PCT/FR2020/050319
§ 371(c)(1), (2) Date Aug. 19, 2021,
PCT Pub. No. WO2020/169931, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 1901804 (FR), filed on Feb. 22, 2019.
Prior Publication US 2022/0186154 A1, Jun. 16, 2022
Int. Cl. C11D 3/12 (2006.01); C11D 3/04 (2006.01); C11D 3/10 (2006.01); C11D 3/20 (2006.01); C11D 3/33 (2006.01); C11D 7/32 (2006.01)
CPC C11D 7/3245 (2013.01) [C11D 3/04 (2013.01); C11D 3/10 (2013.01); C11D 3/2006 (2013.01); C11D 3/33 (2013.01); C11D 2111/20 (2024.01)] 16 Claims
OG exemplary drawing
 
1. A decontamination composition for a chemical containing fluoride ions, comprising:
at least one primary neutralizing agent that is a complex based on aluminum and ethylenediaminetetraacetic acid and having a pKa of >4,
at least one secondary neutralizing agent,
water,
a color indicator or a mixture of color indicators in an amount ranging from 0.001% to 5% by weight, relative to the total weight of the composition, and
optionally at least one additive,
wherein said composition is free of salts HaXb in which H is an alkali metal or alkaline earth metal, X is a halogen atom, a is an integer between 1 and 2, and b is an integer between 1 and 4, and
wherein the secondary neutralizing agent is selected from the group consisting of ascorbic acid and salts thereof, hydrogen carbonate and salts thereof, creatinine, glutathione, isoguanine, adenine, amino acid and salts thereof, glutamic acid and salts thereof, aspartic acid and salts thereof, arginine and salts thereof, lysine and salts thereof, ornithine and salts thereof, cysteine, and mixtures thereof.