Liquid phenol-aldehyde adhesive for use in curtain-coating adhes

Details Liquid phenol-aldehyde adhesive for use in curtain-coating adhes Liquid phenol-aldehyde adhesive for use in curtain-coating adhes

1974-08-26

1976-06-29

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 7, 260 172, 260 38, 260 58, 08L 6112, C08L 6110, C08L 6114

Patent

active

039666581

ABSTRACT:
A liquid adhesive composition for use in adhesive applicators 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 substrate.

REFERENCES:
patent: 2106180 (1938-01-01), Kreimeier
patent: 2250445 (1941-07-01), Bruson et al.
patent: 2997447 (1961-08-01), Russell et al.
patent: 3297638 (1967-01-01), Beaulieu
Air Products, & Chemical Technical Bulletin 5-3, Apr., 1969.

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