Cross-linking of cellulose fibers in gas suspension

Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives

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81164, 8120, C08B 1510

Patent

active

041139364

ABSTRACT:
The invention relates to a process for cross-linking cellulose with formaldehyde. The pulp is fluffed, aerated and exposed to a reaction mixture comprising formaldehyde, hydrochloric acid and formic acid as finely divided droplets or vapors. The wetted fibers are then cured in a hot air stream at 180.degree. C during a few seconds and separated from the gaseous effluents. The whole procedure lasts less than 1 minute.

REFERENCES:
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patent: 2311080 (1943-02-01), Pinkney
patent: 3046079 (1962-07-01), Reeves et al.
patent: 3224926 (1965-12-01), Bernardin
patent: 3230108 (1966-01-01), Marek
patent: 3264054 (1966-08-01), Reinhardt et al.
patent: 3287083 (1966-11-01), Hushebeck
patent: 3310363 (1967-03-01), Russell et al.
patent: 3440135 (1969-04-01), Chung
patent: 3700549 (1972-10-01), Croon et al.
Chemical Abstracts, vol. 82, No. 14, Apr. 7, 1975, p. 87968M.

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