Acrylic polymerization inhibition

Details Acrylic polymerization inhibition Acrylic polymerization inhibition

1976-10-22

1978-09-12

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Addition of material to distilland to inhibit or prevent...

For inhibiting or preventing a polymerization reaction

203 62, 203DIG21, 562598, 26034676, 560 4, B01D 334, C07C 5704, C07C 6954

Patent

active

041135741

ABSTRACT:
The prior art discloses a number of polymerization inhibitors for acrylic acid, acrylates and derivatives thereof, but such polymerization inhibitors have low vapor pressures. Consequently, when acrylic acid is vaporized, it tends to polymerize on cooling surfaces causing undesirable deposits on storage vessels and the like. However, when a polymerization inhibiting amount of 2,4-pentanedione is added to the monomer, the polymerization of acrylic acid on cooling surfaces is inhibited.

REFERENCES:
patent: 2386365 (1945-10-01), Staudinger et al.
patent: 3169911 (1965-02-01), Vogt et al.
patent: 3227628 (1966-01-01), Hess
patent: 3261847 (1966-07-01), Sullivan
patent: 3965123 (1976-06-01), Franklin
patent: 4010082 (1977-03-01), Nemec et al.
patent: 4021310 (1977-05-01), Schimizu et al.

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