Lignin-modified phenolic adhesives for pressed wood products

Details Lignin-modified phenolic adhesives for pressed wood products Lignin-modified phenolic adhesives for pressed wood products

1984-08-28

1985-08-27

Nielsen, Earl

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

Synthetic resins

From lignin, tannin, or derivative reactant

524735, C08G 828, C08H 502

Patent

active

045379416

ABSTRACT:
An improved modified phenol-formaldehyde resin, and a process for its preparation, which contains lignosulfonates is described. Typically, the lignosulfonates are in the form of black liquor. These resins are made by including with the phenol a small amount of potassium ferricyanide. Unlike the known processes utilizing black liquors and the like, this process appears to be far less susceptible to the inherent variability of these liquors. These resins can be easily converted into a solid by spray drying, and find use as adhesives, for example in board products.

REFERENCES:
patent: 2227219 (1940-12-01), Fiedler
patent: 3185654 (1965-05-01), Ball et al.
patent: 3227667 (1966-01-01), Moffitt et al.
patent: 3285801 (1966-11-01), Sarjeant
patent: 3325426 (1967-06-01), Markham
patent: 3597375 (1971-08-01), Ludwig et al.
patent: 3658638 (1972-04-01), Ludwig et al.
patent: 3864291 (1975-02-01), Enkvist
patent: 3886101 (1975-05-01), Felicetta et al.
patent: 3931070 (1976-06-01), Bond et al.
patent: 3931072 (1976-01-01), Coyle
patent: 4303562 (1981-12-01), Hollis, Jr. et al.
patent: 4324747 (1982-04-01), Sudan et al.

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