Cellulosic board

Details Cellulosic board Cellulosic board

1982-03-01

1984-10-23

Hayes, Lorenzo B.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

156 622, 264109, 264128, 428403, 524 62, C08L 102

Patent

active

044789661

ABSTRACT:
A board of cellulose containing components using formaldehyde-based curable glues. By treatment of at least one part of the components at a low moisture content with a formaldehyde absorbing agent the board obtained after pressing get a low content of free formaldehyde and very good strength properties. The moisture content of the components at the treatment is lower than 12 percent by weight. The formaldehyde absorbing agent is preferably urea.

REFERENCES:
patent: 3649396 (1972-03-01), Carlsson
patent: 3649397 (1972-03-01), Peters
patent: 3905847 (1975-09-01), Black
patent: 3968308 (1976-07-01), Buschfeld et al.
patent: 4196095 (1980-04-01), Cala et al.
patent: 4260651 (1981-04-01), Wixon
patent: 4328114 (1982-05-01), Johnson et al.
patent: 4417994 (1983-11-01), Stoddart

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