Methods and compositions for inhibiting styrene polymerization

Details Methods and compositions for inhibiting styrene polymerization Methods and compositions for inhibiting styrene polymerization

1989-06-05

1990-05-29

Davis, Curtis R.

Chemistry of hydrocarbon compounds

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

With nonhydrocarbon additive

585 2, 585 4, 585 5, 252403, C07C 720

Patent

active

049297783

ABSTRACT:
Methods and compositions are provided for inhibiting the polymerization of styrene monomer during elevated temperature processing thereof or during storage or shipment of styrene containing product. The compositions comprise a combination of (a) a phenylenediamine compound having at least one N-H bond and (b) a hindered phenol compound. The methods comprise adding from 1-10,000 ppm of the combination to the styrene medium, per one million parts of styrene.

REFERENCES:
patent: 4466905 (1984-08-01), Butler et al.
"An Investigation of the Synergism between N-Isopropyl-N'-phenyl-1,4-phenylenediamine and 2,6-Dialkylphenols", L. Taimr and J. Pospisil, Die Angewandte Makromolekulare Chemie 128 (1984) 181-188 (Nr. 2038).
"A Cooperative Effect between Antioxidants N-Iso-Propyl-N'-Phenyl-1,4-Phenylene Diamine and 2,6-Di-tertbutylphenol", L. Taimr & J. Pospisil, Polymer Degradation and Stability 8, (1984) 23-35.

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