Process for making lignin reinforced polymers

Details Process for making lignin reinforced polymers Process for making lignin reinforced polymers

1974-07-15

1976-11-09

Ziegler, J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 3, C08L 9700

Patent

active

039910229

ABSTRACT:
A process is disclosed for producing lignin-polymer compositions. The process comprises coprecipitation of hexamethylene tetramine modified alkali lignin and rubber or resin latices with a gas, such as carbon dioxide or sulfur dioxide. The lignin-latex coprecipitate is then gas dried at a temperature which causes decomposition of the ammonium carbonate or ammonium sulfite which was formed during the precipitation step, leaving a lignin reinforced polymer free of inorganic salts.

REFERENCES:
patent: 3079360 (1963-02-01), Sutherland et al.
patent: 3697497 (1972-10-01), Falkehag
patent: 3817974 (1974-06-01), Sirianni et al.
Keilen et al. (India Rubber World vol. 124, 178, May 1951).
Keilen et al. Rubber Chem. Tech., 20, 1099 (1947).

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