Process for depolymerization of acrylic acid polymers

Details Process for depolymerization of acrylic acid polymers Process for depolymerization of acrylic acid polymers

1980-01-21

1981-10-06

Sever, Frank

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 22R, 134 31, 134 38, B08B 308, B08B 700, B08B 908

Patent

active

042933471

ABSTRACT:
A method of removing acrylic acid polymer from processing vessels, e.g., distillation towers, which comprises contacting said polymer with a dialkyl phthalate in vapor or liquid form at elevated temperatures. This procedure dissolves and depolymerizes the polymer and removes it from the vessel.

REFERENCES:
patent: Re27432 (1972-07-01), Torrenzano et al.
patent: 3764384 (1973-10-01), Berni

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