Compositions and methods for inhibiting vinyl aromatic...

Details Compositions and methods for inhibiting vinyl aromatic... Compositions and methods for inhibiting vinyl aromatic...

C - Chemistry, Metallurgy

07

C

C07C 7/20 (2006.01) C07B 63/04 (2006.01) C07C 15/46 (2006.01)

Patent

CA 2241209

Compositions and methods for inhibiting the polymerization of vinyl aromatic monomers in oxygen-free processing systems are disclosed. The compositions comprise a hydroxylamine compound, a phenylenediamine compound and a vinyl aromatic monomer. The methods comprise adding to the monomer bis- N,N'(hydroxypropyl)hydroxylamine.

La présente invention décrit des compositions et des procédés d'inhibition de la polymérisation de monomères aromatiques vinyliques dans des systèmes exempts d'oxygène. Lesdites compositions comprennent un composé hydroxylamine, un composé phénilènediamine et un monomère aromatique vinylique. Les procédés consistent à ajouter au monomère un composé bis-N,N'(hydroxypropil)hydroxylamine.

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