PURIFICATION OF ADIPONITRILE
First Claim
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2. The process of claim 1 wherein the polymer of formaldehyde is paraformaldehyde.
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Abstract
A process for the purification of adiponitrile wherein adiponitrile containing impurities is treated with a polymer of formaldehyde, such as paraformaldehyde, containing from about six to about one hundred formaldehyde units, to reduce the level of impurities. The treatment can be carried out at a temperature in the range of 50 to 100*C.
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3 Claims
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2. The process of claim 1 wherein the polymer of formaldehyde is paraformaldehyde.
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3. The process of claim 2 wherein the temperature is in the range of 70 to 80*C.
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