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

09

K

C09K 15/00 (2006.01) C07B 63/04 (2006.01) C07C 7/20 (2006.01) C07C 17/42 (2006.01) C07C 49/683 (2006.01) C09K 15/14 (2006.01) C09K 15/20 (2006.01)

Patent

CA 2323870

Synergistic composition and method of use are disclosed. The compositions comprise a quinone methide derivative and a hydroxylamine compound. These compositions demonstrate synergism at inhibiting the polymerization of a vinyl aromatic monomer. Preferably the quinone methide derivative is 2,6-di-tert-butyl-4-benzylidene- cyclo-2,5-dienone and the hydroxylamine compound is N,N-bis(hydroxypropyl)-hydroxylamine.

L'invention concerne des compositions synergiques et les procédés d'utilisation associés. Ces compositions contiennent un dérivé de méthylure de quinone et un composé hydroxylamine. Ces compositions produisent un effet synergique d'inhibition de la polymérisation de monomères aromatiques vinyliques. Le dérivé de méthylure de quinone est de préférence 2,6-di-tert-butyl-4-benzylidène-cyclo-2,5-diénone et le composé hydroxylamine est de préférence N,N-bis(hydroxypropyl)-hydroxylamine.

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