Removal of benzene from carboxy polymethylene resin

Details Removal of benzene from carboxy polymethylene resin Removal of benzene from carboxy polymethylene resin

1984-03-26

1985-05-21

Lee, Lester L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

523100, 528481, 528495, 528496, 528499, 528500, C08F12002

Patent

active

045187681

ABSTRACT:
Benzene is removed from carboxy polymethylene resin by dissolving the resin to form a solution and dispersing the solution as fine droplets in a gas phase or aerating the solution to introducing into it a fine dispersion of gas bubbles. The benzene transfer from the solvated resin to the gas phase and a benzene-free resin or solution can be obtained which may be usable in pharmaceutical and food products.

REFERENCES:
patent: 3600366 (1971-08-01), Heckert
patent: 4049897 (1977-09-01), Houslay

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