Bis(piperazinylalkyl) ether compound and method for the preparation thereof
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United States of America Patent
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Oct 8, 1991
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N/A
app pub date -
May 2, 1990
filing date -
May 19, 1989
priority date (Note) -
Expired
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Abstract
The invention provides a novel compound which is a bis(4-alkyl-substituted piperazinylalkyl) ether such as bis[2-(4-methylpiperazinyl)ethyl] ether and bis[2-(4-ethylpiperazinyl)ethyl] ether. The compound, which can be prepared by the dehydrochlorination reaction between a 1-alkyl-substituted piperazine and a bis(chloroalkyl) ether, is useful as a catalyst for the urethane-forming reaction between a polyisocyanate compound and a polyol compound to give an advantage that a sufficiently long mixing time is available to ensure full uniformity of the reaction mixture before substantial proceeding of the reaction.
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