| http://www.w3.org/ns/prov#value | - On the other hand, in the case that Y is a hydroxy group, a second condensate is obtained by adding an alkali metal hydroxide such as sodium hydroxide to a reaction liquid of the first condensate and then by reacting under the conditions of about pH 4 to 10, 5 to 80??? C. and 0.5 to 12 hours.
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