C-Nitroso compounds as anaerobic polymerization inhibitors for a

Distillation: processes – separatory – Addition of material to distilland to inhibit or prevent... – For inhibiting or preventing a polymerization reaction

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203 57, 203DIG21, 562598, 562600, 560 4, C07C 5150, C07C 5704, B01D 334

Patent

active

042104939

ABSTRACT:
A method is disclosed for inhibiting the polymerization of acrylic and methacrylic acids at ambient or above ambient temperature, such as during preparation, purification or storage of the acids under substantially anaerobic conditions, by adding thereto a polymerization inhibiting amount of a compound having the formula:

REFERENCES:
patent: 2787634 (1957-04-01), Coover, Jr. et al.
patent: 3227628 (1966-01-01), Hess
patent: 3527822 (1970-09-01), Benson, Jr.
patent: 3830707 (1974-08-01), Kageyama et al.

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