US 12,220,736 B2
Use of specific solutions and polymer materials obtained from these solutions for trapping toxic chemical agents
Stéphane Cadra, Saint Avertin (FR); and Benoit Blondel, Chambray-les-Tours (FR)
Assigned to COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, Paris (FR)
Appl. No. 17/040,626
Filed by COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, Paris (FR)
PCT Filed Mar. 26, 2019, PCT No. PCT/FR2019/050686
§ 371(c)(1), (2) Date Sep. 23, 2020,
PCT Pub. No. WO2019/186054, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 1852653 (FR), filed on Mar. 27, 2018.
Prior Publication US 2021/0114070 A1, Apr. 22, 2021
Int. Cl. B09B 3/21 (2022.01); C08F 220/56 (2006.01); C08K 3/16 (2006.01)
CPC B09B 3/21 (2022.01) [C08F 220/56 (2013.01); C08K 3/16 (2013.01)] 16 Claims
 
1. A method of trapping a chemical toxic agent present on a surface contaminated by said chemical toxic agent comprising the following steps:
a step of bringing into contact with the contaminated surface of solution composed exclusively of at least one protic solvent, at least one monomer comprising an (alkyl) acrylic group, an (alkyl) acrylate group or an (alkyl) acrylamide group, at least one crosslinking agent comprising at least two groups chosen from (alkyl) acrylic, (alkyl) acrylate or (alkyl) acrylamide groups, at least one photopolymerization initiator and at least one agent selected from among alkali halides, alkali phosphates, alkali sulphates and mixtures thereof;
a step of forming a polymeric material by polymerizing the monomer(s) and the crosslinking agent(s) present in the solution, whereby it is obtained a polymeric material comprising a polymer resulting from the polymerization of the monomer(s) and of the crosslinking agent(s) as defined above and trapping, within itself, a liquid phase comprising at least one agent as defined above;
a step of removing the polymeric material thus formed from said surface, by means of which said surface is thus depleted or even devoid of said chemical toxic agent.