Process inhibitor for readily polymerizable ethylenically...

Details Process inhibitor for readily polymerizable ethylenically... Process inhibitor for readily polymerizable ethylenically...

C - Chemistry, Metallurgy

07

C

202/99, 260/679.

C07C 15/46 (2006.01) C07C 7/20 (2006.01)

Patent

CA 1183874

Abstract The present invention provides an improvement in methods for preparing and processing ethylenically unsaturated aromatic monomer. The improvement com- prises employing 3,5-dinitrosalicylic acid as a process inhibitor. The DNSA is present in a concen- tration of about 50 to 3 000 ppm, preferably about 250 to 2 000 ppm, and most preferably about 500 to 1 000 ppm.

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