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Artikel entfernen Vorschaubild Produkt Preis Anzahl Zwischensumme
× Honighäuschen (Bonn) - Meine Betriebsweise mit der modifizierten 12er-Dadantbeute 22,90 €
22,90 €
× Urea-formaldehyde resins are mainly used for the production of wood-based materials, as they are inexpensive and easy to process and have high mechanical and technological properties. The disadvantages are the relatively low hydrolysis stability and the emission of formaldehyde, which is classified as carcinogenic. Since the legal guideline values for emissions have been decreasing for years, urea-formaldehyde resins with adapted molar ratios are produced to meet the requirements. The mechanical-technological properties decrease, so that reinforcing components such as melamine, phenols or isocyanates have to be used. If isocyanates are added to urea-formaldehyde resins, both adhesive systems accelerate the curing reaction. This effect has been known for some time and is used industrially Erhöhung der Reaktivität von Isocyanatklebstoffen fu?r die Anwendung in der Holzwerkstoffindustrie 42,00 €
42,00 €

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Zwischensumme 64,90 €
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Gesamtsumme 71,40 € (inkl. 4,25 € MwSt. DE reduced-rate)
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