Aqueous phenol-aldehyde resole adhesive with...

Details Aqueous phenol-aldehyde resole adhesive with... Aqueous phenol-aldehyde resole adhesive with...

C - Chemistry, Metallurgy

08

K

400/7317

C08K 5/05 (2006.01) C08K 5/06 (2006.01) C08L 61/08 (2006.01) C09J 3/14 (1980.01)

Patent

CA 1076730

ABSTRACT A liquid adhesive composition for use in adhesive appli- cators of the curtain-coating class, such as are used in coating plywood veneers in the manufacture of plywood, comprises: An aqueous, alkaline phenol-aldehyde resinous adhesive, a filler, and a minor proportion of 2,4,7,9-tetramethyl-5-decyne-4,7-diol, or of the ethylene glycol-, propylene glycol-, and butylene glycol-ethers thereof having from 1 to 10 mols of glycol per mol of diol. The diol or diol ether serves the function of improving the curtain- forming qualities of the adhesive composition. In particular, its inclusion in the composition insures curtain uniformity, i.e. the absence of curtain breaks and tears, and uniform spread on the sub- strate.

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