Wood composites with light colored glue lines

Details Wood composites with light colored glue lines Wood composites with light colored glue lines

1993-05-03

1995-01-03

Sluby, P. C.

Stock material or miscellaneous articles

Composite

Of aldehyde or ketone condensation product

428528, 1563074, 156335, B32B 2108, B32B 2742, B32B 3112

Patent

active

053785444

ABSTRACT:
A composite wood product made from discrete wood particles secured together by a cured bisphenol A formaldehyde resin cured from an A-stage bisphenol A formaldehyde resin having an A-stage bisphenol A to formaldehyde mole ratio of 1 to between 2.5 and 4 and between 3 and 11% of caustic measured as sodium hydroxide based on the weight of resin solids. Preferably the resin will include 2 to 10% urea based on the resin solids. The cured bisphenol A formaldehyde resin secures the wood particles together to form a composite wood product having light colored glue lines that substantially corresponds in color with the wood so that the glue lines tend to be unnoticeable.

REFERENCES:
"Infra-Red Spectra of Phenolic Resins" by Nakamura, N., Journal of Industrial Chemistry, vol. 60, No. 6, pp. 785-789 (1957).

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