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 (146 KB bytes)

Title: Accelerated cure of phenol-formaldehyde by the addition of cure accelerators : studies with model compounds

Author: Lorenz, Linda F.; Conner, Anthony C.;

Date: 2000

Source: Wood adhesives 2000 : June 22-23, 2000 ... South Lake Tahoe, Nevada. Madison, WI : Forest Products Society, 2000: Pages 391-395

Publication Series: Miscellaneous Publication

Description: Fast curing phenol-formaldehyde (PF) resins could potentially allow wood to be bonded at higher moisture contents and at lower press temperatures than those currently used commercially. Recent reports in the literature have shown that the addition of esters, lactones, or organic carbonates increased the curing rate of PF resins. Several mechanisms have been proposed to ex-plain the accelerated cure. The PF model compounds 2-and 4- hydroxymethyl phenol (2-HMP and 4-HMP) were reacted in alkaline conditions at 20°C, with and without cure accelerators, such as ethyl formate, propylene carbonate, g-butyrolactone, and triacetin. The disappearance of 2-HMP (or 4-HMP) and the appearance of reaction products with time were determined by high-pressure liquid chromatography (HPLC). The addition of cure accelerators significantly increased the rate of product formation from reactions that are similar to those that occur during the cure of PF resins. A dimeric and a trimeric reaction product were isolated by preparative thin-layer chromatography, and their structures were determined by 13C-NMR spectroscopy. These results are consistent with a mechanism in which the hydroxymethylated phenol is esterified by the cure accelerator, facilitating its conversion to a reactive quinone methide intermediate.

Keywords: Accelerated curing, curing, phenol-formaldehyde, model compounds

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.

XML: View XML

Citation:


Lorenz, Linda F.; Conner, Anthony C. 2000. Accelerated cure of phenol-formaldehyde by the addition of cure accelerators : studies with model compounds. Wood adhesives 2000 : June 22-23, 2000 ... South Lake Tahoe, Nevada. Madison, WI : Forest Products Society, 2000: Pages 391-395

 


 [ 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.