COMPOSITION FOR INHIBITING MONOMER POLYMERIZATION COMPRISING A NITROXIDE INHIBITOR, A QUINONE METHIDE RETARDER AND AN AMINE STABILIZER

• Main Authors: MASERE, Jonathan, ALNASLEH, Bassam, NEILSON, Andrew R, COLORADO, Ramon
• Format: Patent
• Language: English; French
• Published: 16.01.2020
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ADHESIVES; APPARATUS THEREFOR; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; GENERAL METHODS OF ORGANIC CHEMISTRY; HETEROCYCLIC COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

Described are compositions and methods for inhibiting polymerization of a monomer (e.g., styrene) composition, which use an N-O polymerization inhibitor, a quinone methide polymerization retarder, and an amine stabilizer having a primary and/or secondary amine group. In a mixture, the amine-based stabilizer can prevent antagonistic effects and can provides greater antipolymerant activity. In turn, the mixture inhibits apparatus fouling and improves the purity of monomer streams. L'invention concerne des compositions et des procédés permettant d'inhiber la polymérisation d'une composition de monomère (par exemple, styrène), qui utilisent un inhibiteur de polymérisation de N-O, un retardateur de polymérisation de quinone méthide, et un stabilisateur d'amine ayant un groupe amine primaire et/ou secondaire. Dans un mélange, le stabilisateur à base d'amine peut empêcher des effets antagonistes et peut fournir une plus grande activité empêchant la polymérisation. Le mélange inhibe aussi l'encrassement de l'appareil et améliore la pureté des flux de monomères.