C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 7/20 (2006.01) C07B 63/04 (2006.01) C07C 15/46 (2006.01)
Patent
CA 2593400
A method for inhibiting the premature polymerization of styrenic monomers is disclosed wherein the method comprises adding to said monomers a combination of: (A) at least one inhibitor that is a sulfonic acid compound in a concentration sufficient to initiate cationic polymerization of said styrenic monomers at any point of the manufacturing or purification process and cause a resulting temperature increase; and (B) at least one amine in a concentration sufficient to reduce said cationic polymerization and said temperature increase; whereby an uncontrolled exothermic reaction between said sulfonic acid compound and said styrenic monomers will be prevented.
L'invention porte sur un procédé qui permet d'inhiber la polymérisation prématurée des monomères styréniques, lequel procédé consiste à ajouter auxdits monomères une combinaison de: (A) au moins un inhibiteur qui est un composé acide sulfonique dans une concentration suffisante pour démarrer la polymérisation cationique desdits monomères styréniques à un quelconque moment du processus de fabrication ou de purification et entraîner par conséquent une augmentation de température; et (B) au moins une amine dans une concentration suffisante pour réduire ladite polymérisation cationique et ladite augmentation de température, permettant de la sorte d'empêcher une réaction exothermique incontrôlée entre le composé acide sulfonique et les monomères styréniques.
Abruscato Gerald J.
Benage Brigitte
Fabian Jesus R.
Kosover Vilen
Lippai Istvan
Chemtura Corporation
Gowling Lafleur Henderson Llp
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