Lignosulfonate-phenol-formaldehyde resin binder in sheet materia

Details Lignosulfonate-phenol-formaldehyde resin binder in sheet materia Lignosulfonate-phenol-formaldehyde resin binder in sheet materia

1985-12-16

1987-10-20

Ball, Michael

Stock material or miscellaneous articles

Composite

Of aldehyde or ketone condensation product

156335, 428529, 428535, 428536, B29J 502, C09J 328

Patent

active

047013834

ABSTRACT:
A method of manufacturing a lignosulfonate-phenol-formaldehyde resin includes heating a mixture of phenol, formaldehyde, lignosulfonate and alkali at a temperature of 60.degree. C. to 100.degree. C. and a pH of 8-13. The lignosulfonate comprises about 5 to about 80 percent of the total weight of phenol, formaldehyde and lignosulfonate and the lignosulfonate is mixed with said phenol and formaldehyde before substantial reaction between said phenol and said formaldehyde. Also disclosed are fibrous articles manufactured using this resin as a binder, such as fiberboards, particle board, plywood, oriented strand board, and waferboard.

REFERENCES:
patent: 3658638 (1972-04-01), Ludwig et al.
patent: 3790442 (1974-02-01), Ashall
patent: 3886101 (1975-05-01), Felicetta et al.
patent: 3940352 (1976-02-01), Wennerblom et al.
patent: 3956207 (1976-05-01), Blackmore et al.
patent: 4105606 (1978-08-01), Forss et al.

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