While making solutions of copolymers containing an alkoxysilane moiety, the only experience that I have had so far has been gelation of the solution (which is undesirable).
How could I prevent this gelation?
Asit Baran Samui
Because of trace of water will be able to degrade alkoxysilane, ( sodium) dried toluene, THF etc. can be used.
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Burkhard Koehler
From own experience I would give the advice to add a high excess of alcohol to the solution. You can use the alcohol of the alkoxysilane (mostly ethanol or methanol, water free) or methoxyethanol. Methoxyethanol (methyl cellosolve) will exange with the alkoxy groups of the silane and decrease the reactivity. If this is tolerable methyl cellosolve is a better choice than (m)ethanol.
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