Journal
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
Volume 27, Issue 18-19, Pages 2103-2111Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/01694243.2012.697673
Keywords
chestnut tannin; hydrolysable tannins; wood adhesives; wood panel adhesives; phenolic resins
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Chestnut hydrolysable tannins are phenolic materials that have been considered too unreactive to compete in the phenolic resin adhesives market for exterior boards for the building industry. However, an article in 1973 describing 3years industrial application of chestnut hydrolysable tannins during the first oil crisis indicated that this was not the case. We have extended this old work by using superior phenolic resins formulations and producing phenol-formaldehyde-chestnut tannin adhesives where a substitution of up to 80% of the phenol is possible with remarkably good results. The reactions involved were clarified by C-13 NMR and MALDI-TOF mass spectrometry.
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