Compositions and methods for inhibiting vinyl aromatic monomer p

Details Compositions and methods for inhibiting vinyl aromatic monomer p Compositions and methods for inhibiting vinyl aromatic monomer p

1994-06-03

1995-06-20

Group, Karl

Chemistry of hydrocarbon compounds

Product blend, e.g., composition, etc., or blending process...

With nonhydrocarbon additive

585 4, 585 24, 203 8, 203 9, C07C 720

Patent

active

054262577

ABSTRACT:
Compositions and methods for inhibiting polymerization of vinyl aromatic monomers in oxygen-free processing systems are disclosed. The compositions comprise an oxime compound and a hydroxylamine compound and, alternatively, an oxime compound, a hydroxylamine compound and a phenylenediamine compound. The methods comprise adding either of the compositions to the vinyl aromatic monomer in an amount ranging from 1 to about 10,000 parts per million parts monomer.

REFERENCES:
patent: 2965685 (1960-12-01), Campbell
patent: 4061545 (1977-12-01), Watson et al.
patent: 4466905 (1984-08-01), Butler et al.
patent: 4720566 (1988-01-01), Martin
patent: 4774374 (1988-09-01), Abruscato et al.
patent: 4929778 (1990-05-01), Roling

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