Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

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

Publication Information

View PDF (1.4 MB bytes)

Title: Syntheses and structural analyses of cocondensed resins from urea and methylolphenols

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

Date: 1993

Source: Mokuzai Gakkaishi 39(11):1276-1284

Publication Series: Miscellaneous Publication

Description: The reactions of urea with polymethylolphenol mixtures in acidic states were investigated by changing the reaction condition such as the molar ratio and acidity. The cocondensates were analyzed with carbon 13 nuclear magnetic resonance (13C-NMR) spectroscopy and gel permeation chromatography(GPC). The quantity of each chemical structure in the cocondensates was normalized and represnted to phenolic (P) nuclear as the molar ratio. The ratio of urea (U) incorporated into the cocondensates, the ratios of cocondensation, and the degrees of condensations were determined as were the degrees of substitution of phenol nuclear and urea residues.

Keywords: Cocondensation, urea, phenol, formaldehyde, 13C-NMR.

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 pubrequest@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

XML: View XML

Citation:


Tomita, Bunchiro; Hse, Chung-Yun 1993. Syntheses and structural analyses of cocondensed resins from urea and methylolphenols. Mokuzai Gakkaishi 39(11):1276-1284

 


 [ 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.