B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
400/1310
B32B 29/08 (2006.01) C08G 8/22 (2006.01) C08G 8/24 (2006.01) C08L 97/02 (2006.01) C09J 161/12 (2006.01)
Patent
CA 1226984
ABSTRACT The present invention relates to an adhesive compound for manufacturing glued laminated beams and wood constructions. One component of the adhesive compound is resorcinol-phenol resin. Resorcinol-phenol adhesives are as such known in the prior art. The main ingredients of these adhesives are resorcinol, formaldehyde and phenol. Among the drawbacks in the use and production of resorcinol-phenol adhesives are their high price and the fact that the raw materials are difficult to obtain. The purpose for employing the adhesive compound of the ivention is to eliminate some of the difficulties connected to the availability of the raw materials, particularly resorcinol, and to help produce a new, more economical resorcinol-phenol based adhesive compound. Part of the resorcinol-phenol resin used in the adhesive compound can be replaced by a humus substance extract made of peat, preferably decomposed peat, or by a commixture made of humus substance extract and formaldehyde. The adhesive compound according to the invention contains 40-90 % by weight resorcinol-phenol resin, the dry matter content whereof is 30-60 % by weight and 10-60 % by weight humus substance extract made of peat. Into this adhesive compound there is added, before use, some generally known hardener such as formaldehyde 5-20 % by weight. Into the the humus substance extract of the adhesive compound may be added 10-20 % by weight formaldehyde.
470640
Kankaanpaa Pentti
Kilpelainen Harri
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Valtion Teknillinen Tutkimuskeskus (i.e. Technical Research Cent
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