Product and process relating to hardboard

Details Product and process relating to hardboard Product and process relating to hardboard

1985-03-08

1986-01-28

Jacobs, Lewis T.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

162165, 162172, 1621816, 523219, 524 13, 524 14, C08K 334

Patent

active

045672156

ABSTRACT:
A novel economical hardboard is provided which comprises (a) about 1-40 wt % of a porous additive having a particle size in the range of about 0.1-2 mm; (b) about 65-97 wt % of cellulose fibers; (c) about 2-5 wt % binder; and (d) about 1-4 wt % wax. Also provided is an efficient economical process for the production of the above described inventive hardboard comprising the steps of formulating an aqueous mixture of the above ingredients, then dewatering the aqueous mixture, and finally heating the mixture at a temperature and time sufficient to cure the binder.

REFERENCES:
patent: 3042578 (1962-07-01), Denning
patent: 3408316 (1968-10-01), Mueller et al.
patent: 3623938 (1971-11-01), Jenkins
patent: 3988199 (1976-10-01), Hillmer et al.
patent: 4118273 (1978-10-01), Godin et al.
patent: 4126512 (1978-11-01), Hill
patent: 4313997 (1982-02-01), Ruff et al.
patent: 4325849 (1982-04-01), Rosen et al.
patent: 4411738 (1983-10-01), Wittrup et al.

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