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

1989-05-16

1991-06-11

Dees, Jose G.

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

Organic compounds

Carboxylic acids and salts thereof

560 4, 25240053, 252401, C07C 57075

Patent

active

050233726

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.

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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: 4912247 (1990-03-01), Roling

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