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专利名称：Process for the manufacture of wood
particle boards
发明人：SCHMIDT-HELLERAU, CHRISTOF,MAYER,
JOHANN, DR.
申请号：EP88116174.9申请日：19880930公开号：EP0310955A3公开日：19900131
摘要： Abstract of the Disclosure: Woodworking materials having a lower subsequentformaldehyde emission can be prepared in an advantageous manner and with good resinreactivity and good strengths and swelling properties by mixing lignocellulose-containingparticles, for example wood particles, with a curable binder based on curable amino-plast condensates and then pressing the mixture under the action of heat, a mixture Acontaining a water-compatible agent for binding formaldehyde being applied to or mixedwith the particles before the latter are mixed with the curable binder, if the mixture A isan aqueous solution which has a pH of from 3.0 to 6.5 and contains a) organic acids whichattack wood only insignificantLy, if at all, in an amount of more than 15% by weight, basedon the solids content of the solution, prefer- ably a mixture of aliphatic carboxylic acidsof 4 to 10 carbon atoms, and b) a formaldehyde-binding, nitrogen-containing compound,in particular urèa.
申请人：BASF AKTIENGESELLSCHAFT
地址：Carl-Bosch-Strasse 38 67063 Ludwigshafen DE
国籍：DE
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