Polymerization inhibitor for vinyl aromatic compounds

Details Polymerization inhibitor for vinyl aromatic compounds Polymerization inhibitor for vinyl aromatic compounds

1975-03-21

1976-10-26

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

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

For inhibiting or preventing a polymerization reaction

203 59, 203 65, 260669A, B01D 334

Patent

active

039882128

ABSTRACT:
Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds and a new polymerization inhibitor therefor. The process comprises subjecting a vinyl aromatic compound to distillation conditions in a distillation system and adding to the system the new polymerization inhibitor comprising a mixture of N-nitroso diphenyl amine and a dinitro-O-cresol.

REFERENCES:
patent: 2556030 (1951-06-01), Coulter et al.
patent: 3816265 (1974-06-01), Daniels et al.
Bundy et al: Styrene, Its Polymers, Copolymers and Derivatives, (1952) pp. 1236, 1237, 1238.
Foord, J. Chem. Soc. pp. 48-56 (1940).

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