Process for producing highly purified xyltlenediamine

Details Process for producing highly purified xyltlenediamine Process for producing highly purified xyltlenediamine

2011-03-29

2011-03-29

Sullivan, Daniel M (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

Reexamination Certificate

active

07915452

ABSTRACT:
A method of producing xylylenediamine from xylene. In the method, xylene is converted into dicyanobenzene by ammoxidation. The produced dicyanobenzene is extracted into an organic solvent. The extract is then distilled to separate dicyanobenzene from the organic solvent. After added with a solvent, the separated dicyanobenzene is hydrogenated in a liquid phase. Finally, the hydrogenation product is purified by distillation to obtain a highly pure xylylenediamine. The method is conducted in a simple and low energy-consuming process.

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Supplementary European Search Report dated Apr. 18, 2008, for Application No. EP 05 75 3468.

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