Resin-containing cellulosic overlays

Details Resin-containing cellulosic overlays Resin-containing cellulosic overlays

1976-06-07

1977-11-01

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

Non-fiber additive

427391, 428528, D21D 300

Patent

active

040564312

ABSTRACT:
Disclosed are improved resin-containing cellulosic overlays for overlaying woody substrates and processes for preparing same. The overlays are produced by admixing an aqueous slurry of cellulosic fibers and a resole resin produced by reacting bisphenol A, a para-substituted phenol selected from p-tertiarybutylphenol, p-tertiaryamylphenol and p-phenylphenol and formaldehyde, precipitating the resin by acidifying the resulting slurry, forming a sheet from the resin-containing slurry and drying the sheet. The overlays produced are white in color and are highly resistant to discoloration due to exposure to sunlight, heat and caustic.

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Casey, "Pulp & Paper," vol. II, (1960), p. 947.

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