Tobacco – Smoke separator or treater
Patent
1989-05-24
1991-10-01
Millin, V.
Tobacco
Smoke separator or treater
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
Henning Paul-Georg
Schmekel Gerald
B.A.T. Cigarettenfabriken GmbH
Millin V.
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