METHOD FOR PHOTOLYTIC DEGRADATION OF BROMINATED FLAME RETARDANTS IN A PLASTIC - APPARATUS THEREFOR

• Main Authors: BOUBERKA, Zohra, OUMEDDOUR, Hanene, Dubois, Philippe, KHELIFI, Skander, SUPIOT, Philippe, LAOUTID, Fouad, ALDOORI, Hussam, MALAS, Christian, FOISSAC, Corinne, MASCHKE, Ulrich, POUTCH, Franck, BRISON, Loïc
• Format: Patent
• Language: English; French; German
• Published: 22.05.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS; CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; DISPOSAL OF SOLID WASTE; FIRE-FIGHTING; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; LIFE-SAVING; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECLAMATION OF CONTAMINED SOIL SOIL; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

L'invention concerne un procédé de débromation d'au moins un retardateur de flamme bromé contenu dans une matière plastique, selon lequel on soumet ladite matière plastique à une irradiation dans le spectre UV-visible. De manière caractéristique, ladite irradiation est mise en oeuvre dans une atmosphère qui présente avant l'irradiation, une pression égale ou inférieure à 100 Pa et supérieure ou égale à 0,1 Pa et notamment égale à 2 Pa, 1,5 Pa, 1 Pa ou 0,5 Pa.