Methods and compositions for inhibiting (meth)acrylic acid polym

Details Methods and compositions for inhibiting (meth)acrylic acid polym Methods and compositions for inhibiting (meth)acrylic acid polym

1991-04-23

1992-12-15

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

25240053, 252401, C07C 5150

Patent

active

051718880

ABSTRACT:
Methods and compositions are provided for inhibiting the polymerization of acrylic acid monomers during elevated temperature processing thereof or during storage or shipment of acrylic acid product. The compositions comprise a combination of a Mn source compound and a phenylenediamine compound having at least 1 N--H bond. The methods comprise adding from about 1-10,000 ppm of the combination to the particular acrylic acid containing medium for which such anti-polymerization protection is desired, per million parts of the acrylic acid medium.

REFERENCES:
patent: 4507495 (1985-03-01), Dougherty et al.
patent: 4638079 (1987-01-01), Inskip et al.
patent: 4663480 (1987-05-01), Inskip et al.
patent: 4720566 (1988-01-01), Martin
patent: 4797504 (1989-01-01), Roling
patent: 5023372 (1991-06-01), Roling

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