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1. WO2000036052 - INHIBITING POLYMERIZATION OF VINYL AROMATIC MONOMERS USING SYNERGISTIC MIXTURES CONTAINING NITROXIDE STABILIZERS

Publication Number WO/2000/036052
Publication Date 22.06.2000
International Application No. PCT/EP1999/009552
International Filing Date 07.12.1999
IPC
C07C 7/20 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
7Purification, separation or stabilisation of hydrocarbons; Use of additives
20Use of additives, e.g. for stabilisation
C09K 15/30 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
15Anti-oxidant compositions; Compositions inhibiting chemical change
04containing organic compounds
30containing heterocyclic ring with at least one nitrogen atom as ring member
CPC
C07C 7/20
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
7Purification; Separation; Use of additives
20Use of additives, e.g. for stabilisation
C09K 15/30
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
15Anti-oxidant compositions; Compositions inhibiting chemical change
04containing organic compounds
30containing heterocyclic ring with at least one nitrogen atom as ring member
Applicants
  • NALCO/EXXON ENERGY CHEMICALS, L.P. [US]/[US]
Inventors
  • GANDE, Matthew, Edward
  • WINTER, Roland, Arthur, Edwin
Priority Data
09/215,01717.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) INHIBITING POLYMERIZATION OF VINYL AROMATIC MONOMERS USING SYNERGISTIC MIXTURES CONTAINING NITROXIDE STABILIZERS
(FR) UTILISATION DE MELANGES CYNERGIQUES CONTENANT DES STABILISEURS NITROXIDES POUR INHIBER LA POLYMERISATION DE MONOMERES AROMATIQUES VINYLIQUES
Abstract
(EN)
The premature polymerization of vinyl aromatic compounds, such as styrene, in the presence of saturated precursors during distillation or purification processes is very effectively inhibited by the presence of at least one stable nitroxide compound together with at least one phenolic, aromatic amine, hindered amine, or phosphite costabilizer.
(FR)
L'invention permet une inhibition puissance de la polymérisation de composés aromatiques vinyliques tels que le styrène, en présence de précurseurs saturés pendant les traitements de distillation ou de purification. On a recours à cet effet à la présence d'au moins un composé nitroxide stable associé à au moins un co-stabiliseur phénolique, amine aromatique, amine bloqué ou phosphite.
Also published as
Latest bibliographic data on file with the International Bureau