Kinetics on cocondensation between phenol and urea through formaldehyde I

Yasunori Yoshida; Bunchiro Tomita; Chung-Yun Hse

Treesearch

Kinetics on cocondensation between phenol and urea through formaldehyde I

Informally Refereed

Authors:

Yasunori Yoshida, Bunchiro Tomita, Chung-Yun Hse

Year:

1995

Type:

Scientific Journal

Station:

Southern Research Station

Source:

Mokuzai Gakkaishi 41(6):547-554

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Abstract

The kinetics of the reactions of methylolphenols and urea were investigated using 2- and 4-hydroxybenzyl alcohols. The high-performance liquid chromatography (HPLC) using a reverse-phase column gave a clear separation between methylolphenols and hydroxybenzylureas. The molar ratios of hydroxybenzylureas to the corresponding methylolphenols in reaction mixtures were obtained from the ratios of peak areas of the chromatograms by using transfer factors corrected by quantitative ¹³C-NMR (carbon 13 nuclear magnetic resonance) measurements. The reactions of 2- and 4-hydroxybenzyl alcohols with excessive amounts of urea were found to follow the pseudo-first-order reaction.

Citation

Yoshida, Yasunori; Tomita, Bunchiro; Hse, Chung-Yun. 1995. Kinetics on cocondensation between phenol and urea through formaldehyde I. Mokuzai Gakkaishi 41(6):547-554