Epichlorohydrin purification process
AssigneeShell Oil Company
InventorsLeo Kim, Sunny C. Tang
Life of this patent
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Abstract
2,3-Butanedione impurity is removed from epichlorohydrin by contacting the impurity containing epichlorohydrin with [a macroreticular poly(t-butyl acrylate) resin ] an acrylic ester resin having a pore volume of about [0.5 ] 0.55 ml/ml, an average pore diameter of about 90 angstroms and a surface area of about 450 m.sup.2 /gm.
Claims3
[1. The process of removing 2,3-butanedione impurity from epichlorohydrin which comprises contacting said epichlorohydrin with a macroreticular poly(t-butyl acrylate) adsorbent resin having a pore volume between about 0.48 and about 0.57, an average pore diameter between about 80 and about 100 angstroms and a surface area between about 400 to about 500 square meters per gram.]
[2. The process of claim 1 wherein the resin has a pore volume between about 0.50 and about 0.55, an average pore diameter between about 85 and about 95 angstroms and a surface area
- between about 425 to about 475 square meters per gram.] 3. The process of claim [1] 4 where the resin is contained in a fixed-bed and said epichlorohydrin is passed through said bed at a liquid hourly space velocity ranging between about 0.1 to about 100 hours.sup.-1.
The process of removing 2,3-butanedione impurity from epichlorohydrin which comprises contacting said epichlorohydrin with an acryclic ester resin having a porosity of 0.55, a surface area of 450 m.sup.2 /gm and an average pore diameter of 90 angstroms.
Dependencies are inferred from the claim text.