Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

 Due to a lapse in federal funding, this USDA website will not be actively updated. Once funding has been reestablished, online operations will continue.

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Yasunori Yoshida; Bunchiro Tomita; Chung-Yun Hse
    Date: 1995
    Source: Mokuzai Gakkaishi 41(7):652-658
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (895 KB)


    Concurrent reactions involving cocondensation and self-codensation were determined simultaneously in the reactions of o- and p-methylolphenol, respectively, with urea. The results were as follows: (1) The reactivity ratio of self-condensation to cocondensation could be determined by Equation [4] for the concurrent reaction of monomethylolphenol with urea. (2) For the reaction of o-methylolphenol with urea in water, it was found that the second-order rate constant of the self-condensation due to the formation of a o,p-methylene linkage is approximately ten times greater than that of the cocondensation between o-methylolphenols with urea. The reaction solvent of the mixture of water and dioxane reduced the reactivity ratio. (3) For the reaction of p-methylolphenol with urea under water/dioxane solvent, it was suggested that the rate constant of the cocondensation is approximately four times greater than that of the self-condensation between p-methylolphenols.

    Publication Notes

    • You may send email to to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Yoshida, Yasunori; Tomita, Bunchiro; Hse, Chung-Yun. 1995. Kinetics on cocondensation between phenol and urea through formaldehyde III. Mokuzai Gakkaishi 41(7):652-658


    Cocondensation, urea/methylolphenols, kinetics, reactivity ratio, C-13 NMR

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page