Abstract: A fast-curing, melamine-modified phenolic laminating resin is described comprising the co-condensation product of aldehyde, phenol and melamine in a water-soluble organic solvent. The modified laminating resin exhibits sufficiently high penetration and curing characteristics for use in a low pressure, continuous laminating process.

Abstract: A fast-curing, melamine-modified phenolic laminating resin is described comprising the co-condensation product of aldehyde, phenol and melamine in a water-soluble organic solvent. The modified laminating resin exhibits sufficiently high penetration and curing characteristics for use in a low pressure, continuous laminating process.

Abstract: The present invention comprises a new phenolic-aldehyde based resinous, thermosetting polyol and a method for its production. According to the invention, phenol is condensed using acid catalysis, under freely evaporative atmospheric conditions with a molar excess of aldehyde, in the presence of polyhydroxyl component.

Abstract: A lignin-based resin binder for use in the manufacture of composition board is produced by the in situ copolymerization of a major portion of a lignosulfonate salt with melamine and formaldehyde. This resin binder employs lignosulfonate levels up to about 70 percent without any of the deleterious effects normally associated with lignin-based resin systems. The resulting binder is completely compatible with conventional composition board processes and produces a board with superior stability under adverse conditions involving high humidity and temperature over a board produced with a standard typical urea-formaldehyde resin as presently in use.

Abstract: Surface precure of amine-aldehyde resins employed in the manufacture of composition board can be prevented by adding a water soluble thiosulfate salt, e.g., sodium thiosulfate, to the resin.

Abstract: Phenolic resins employed in the manufacture of high-pressure decorative laminates are modified by the addition of a partially etherified melamine-formaldehyde resin which is the reaction product of melamine, formaldehyde, an aliphatic polyol and furfural. The modified phenolic resin exhibits better penetration and flow properties and cures more rapidly. Laminates made with this modified resin can be manufactured at lower pressures and without the lengthy in-press cooling step of the prior art. Moreover, the laminates so produced possess enhanced flexibility due to the internal plasticizing effect of the modifier of the present invention.