C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 15/44 (2006.01) C07B 63/04 (2006.01) C07C 7/20 (2006.01) C07C 303/42 (2006.01) C07C 309/29 (2006.01)
Patent
CA 2203397
Nitroxyl inhibitors in combination with some oxygen reduce the premature polymerization of vinyl aromatic monomers during the manufacturing processes for such monomers. Even small quantities of air used in combination with the nitroxyl inhibitors result in vastly prolonged inhibition times for said monomers.
Des inhibiteurs de nitroxyle, en combinaison avec un peu d'oxygène, retardent la polymérisation prématurée de monomères aromatiques de vinyle lors des processus de fabrication de ceux-ci. L'utilisation de quantités d'air même petites, en combinaison avec les inhibiteurs de nitroxyle, permet d'obtenir des temps d'inhibition grandement prolongés pour lesdits monomères.
von Ahn Volker Hartmut
Winter Roland Arthur Edwin
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
Ondeo Nalco Energy Services L.p.
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