Process for vinyl aromatic monomer polymerization inhibition

Details Process for vinyl aromatic monomer polymerization inhibition Process for vinyl aromatic monomer polymerization inhibition

1982-06-28

1984-10-02

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Addition of material to distilland to inhibit or prevent...

For inhibiting or preventing a polymerization reaction

203 65, 585 4, 585860, B01D 334, C07C 705, C07C 720

Patent

active

044746466

ABSTRACT:
This invention is directed to the use of mixtures of a polymerization inhibitor in the distillation of readily polymerizable vinyl aromatic monomers and more specifically to the use of mixtures containing 2,6-dinitro-4-halophenols as polymerization inhibitors for vinyl aromatic monomers such as styrene and vinyl benzenes. The invention comprises the process of subjecting the vinyl aromatic monomers to distillation temperatures in the presence of mixtures containing 2,6-dinitro-4-halophenols to inhibit polymerization.

REFERENCES:
patent: 2304728 (1942-12-01), Boyer et al.
patent: 2526567 (1950-10-01), Drake et al.
patent: 2556030 (1951-06-01), Coulter et al.
patent: 4033829 (1977-07-01), Higgins et al.
patent: 4132602 (1979-01-01), Watson
patent: 4132603 (1979-01-01), Watson

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