Use of tin derivatives as latent polycondensation catalysts, and premix containing them
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United States of America Patent
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Feb 13, 2001
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N/A
app pub date -
Oct 7, 1996
filing date -
Feb 11, 1994
priority date (Note) -
Expired
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Abstract
Tin derivatives for use as oxygen-activated latent polycondensation catalysts. Said tin derivatives having a formula R.sub.1 -Y.sub.n -R.sub.4, wherein R.sub.1 and R.sub.4 together form a divalent group or a single bond which insures the formation of a ring with n being 5, 6 or 7, the radicals Y, which may be similar or different, represent a tin-membered chain unit of a structure R'-Sn-R', wherein R' and R', which may be similar or different are a hydrogen or a hydrocarbon radical.
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