Dsm IP Assets B.v.

Gunther Hellmann

Werner Bonrath

Angela Wildermann

The present invention relates to a new method for a safe transport of ethyne in form of &#x3b1;-alkynols as precursors for ethyne. The new method comprises three steps. In a first step the synthesis of the &#x3b1;-alkynol(s) is performed by reacting ethyne with (a) carbonyl compound(s). The second step comprises the transport of the resulting &#x3b1;-alkynol(s) in a safe manner, whereas the safety requirements for this transport are not as high as for ethyne because &#x3b1;-alkynol(s) are normally classified for transportation as hazardous class 3. In the third step the &#x3b1;-alkynol(s) can be cleaved and the ethyne and the carbonyl compound(s) can be obtained in the cleavage reaction and can be separated to yield pure products for further applications.

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Laufenburg, Germany

Gunther Hellmann