ORGLIST: polyurethanes

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From: Julieta Vergara (julietav$##$netverk.com.ar)
Date: Sat Sep 25 1999 - 10:26:52 EDT

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I am trying to obtain waterborned polyurethanes extending a prepolymer =
ionomer in water with di or tetramines.I use ethylendiamine and ammonia =
and it is successful but with isophorondiamine it always coagulates.Is =
isophorondiamine much more reactive than others and /or the polymer =
formed has a higher molecular weight and does not emulsify?.

Thanks in advance

Esther Zlachevsky
Lic.in Chemistry

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