Authors: |
Roland E. Kreibich, Richard W. Hemingway |
Year: |
1987 |
Type: |
Scientific Journal |
Station: |
Southern Research Station |
Source: |
Forest Products Journal 37(2):43-46 |
Abstract
Extraction of southern pine bark with 4.0 percent sodium sulfite and 0.4-percent sodium carbonate(based on ovendry bark weight) gives epicatechin-(4β)-sulfonate and oligomeric procyanidin-4-sulfonatee that show great promise to replace about 50 percent of the phenol-resorcinol-formaldehyde resin in coldsetting wood-laminating adhesives. Bonds in Douglas-fir laminates exceed the minimal shear strength and wood failure requirements of the American Institute of Timber Construction Standards for dry shear (AITC-T107) and vacuum-pressure cold-water soak (AITC-T110) tests.
Citation
Kreibich, Roland E.; Hemingway, Richard W. 1987. Condensed tannin-sulfonate derivatives in cold-setting wood-laminating adhesives. Forest Products Journal 37(2):43-46