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[求助] 热固性酚醛树脂的合成

热固性酚醛树脂的合成，甲阶水溶性的

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Angew. Chem. Int. Ed. 2005, 44, 7053 –7059

Resol precursor preparation: A soluble low-molecular-weight polymer
(Mw=500–5000) derived from phenol and formaldehyde (resol)
was prepared by a basic polymerization method.T ypical preparation
procedure: Phenol (0.61 g, 6.50 mmol) was melted at 40–428C before
20% NaOH (aq; 0.13 g, 0.65 mmol) was added slowly over 10 min
with stirring.F ormalin (37 wt%, 1.05 g) containing formaldehyde
(13.0 mmol) was added dropwise, and the reaction mixture was stirred
at 708C for 60 min.After cooling the mixture to room temperature,
the pH of the reaction mixture was adjusted to neutral (7.0) using
0.6m HCl solution.W ater was then removed under vaccum below
508C.T he final product (Mw<500 measured by GPC) was redissolved
in ethanol before use.