Skip to page content
USDA Forest Service

Research & Development Treesearch

Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help - We Participate  Government Made Easy

Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (820 KB bytes)

Title: Kinetics on cocondensation between phenol and urea through formaldehyde II

Author: Yoshida, Yasunori; Tomita, Bunchiro; Hse, Chung-Yun;

Date: 1995

Source: Mokuzai Gakkaishi 41(6):555-560

Publication Series: Miscellaneous Publication

Description: The chemical kinetics of the concurrent reactions of 2,4,6-trimethylolphenol with urea, where o- and p-methylol groups reacted simultaneously with urea, were analyzed on four kinds of catalysts: namely, sulfuric acid, hydrochloric acid, nitric acid, and oxalic acid. The results were summarized as follows: (1) Assuming that each reaction follows the second-order reaction, the reactivity ratio (K=ko/kp) of the o- to p-methylol group could be obtained from the kinetic plots of Equation [5] within small errors. (2) The reactivity ratios were determined to be 0.066 to 0.075 by the least-square method for four kinds of acid catalysts. (3) The reactivity ratio of the pseudo-first-order rate constants obtained by competitive cocondensations under the coexistence of o- and p-methylolphenols with a sulfuric acid catalyst was found to be almost identical with that obtained by the concurrent cocondensation of the trimethylolphenol.

Keywords: Cocondensation/urea/methylolphenol, 2, 4, 6-trimethylolphenol, kinetics, reactivity ratio, catalyst

Publication Notes:

  • 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.
  • 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.)



Yoshida, Yasunori; Tomita, Bunchiro; Hse, Chung-Yun 1995. Kinetics on cocondensation between phenol and urea through formaldehyde II. Mokuzai Gakkaishi 41(6):555-560


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.