Process for the impregnation of fibers of a tobacco smoke filter

Tobacco – Smoke separator or treater

Patent

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Details

131342, 131343, 131345, A24D 314, A24D 316

Patent

active

050524151

ABSTRACT:
Fibers of tobacco smoke filters which have been impregnated with dicarboxylic or polycarboxylic acids or anhydrides thereof can be obtained by dissolving anhydrides of dicarboxylic or polycarboxylic acids in volatile or physiologically acceptable organic solvents and applying them to the fibers and, if appropriate, hydrolyzing them with water.

REFERENCES:
patent: 2780228 (1957-02-01), Touey
patent: 3618619 (1971-11-01), Kiefer

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