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AssigneeBASF SE
InventorsMichael Finkenauer, Konrad Roschmann, Ralph Lunkwitz, Stephan Weinkötz
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The present invention relates to a process for producing melamine-urea-formaldehyde resins with up to 0.9% of melamine by reacting a) urea which comprises from 0 to 10% by weight of one or more compounds A, formaldehyde, and melamine in the presence of a base at a pH of from 7.5 to 11, at a temperature of from 20 to 120° C., and at a pressure of from 0.1 to 10 bar, b) and then carrying out reaction in the presence of an acid which optionally comprises urea with from 0 to 10% by weight of one or more compounds A, at a temperature of from 60 to 180° C., and at a pressure of from 0.1 to 10 bar, and c) and then adding urea which comprises from 0 to 10% by weight of one or more compounds A, which comprises carrying out b) at a pH of from 4 to 5.9.
1-15. (canceled)
A process for producing melamine-urea-formaldehyde resins with up to 0.9% of melamine by reacting
A process for producing lignocellulose-containing moldings, which comprises using pressure to press from 5 to 30% by weight of solid resin, based on lignocellulose-containing material, optionally with use of a hardener at press temperatures of from 120 to 250° C.
Dependencies are inferred from the claim text.