LIGNIN-PHENOL-GLUE FOR THE PRODUCTION OF WOOD BASED MATERIALS - LIGNIN-PHENOL-GLUE AS AN ALTERNATIVE TO CONVENTIONAL PHENOL ADHESIVES

Looking for alternatives to conventional phenol adhesives, lignin-phenol-glues were developed which can be used mainly in wood materials production for a wide range of applications. For the obtainable glue properties, the properties of the initial substances, their mixing ratios and the process parameters of the synthesis are the determinative factors. Compared to conventional phenol resins, the new glues are largely competitive. They are based substantially on the use of alkaline spent liquors of cellulose production, and can substitute up to 60% of pure phenol.