Bleaching and dyeing; fluid treatment and chemical modification – Chemical modification of textiles or fibers or products thereof – Cellulose fibers
Patent
1974-02-11
1977-02-22
Lieberman, Allan
Bleaching and dyeing; fluid treatment and chemical modification
Chemical modification of textiles or fibers or products thereof
Cellulose fibers
81492, 68DIG5, D06B 116, D06M 104
Patent
active
040090027
ABSTRACT:
Textile fabric previously impregnated with THPOH is treated to retard inflammability by passage therethrough of toxic ammonia gas in apparatus which permits the THPOH--NH.sub.3 reaction to be carried out in a sealed chamber preventing escape of the toxic gas. The invention operates to confine the gas in a flow path whereby substantially all of the gas flowing through the apparatus is passed directly through the fabric. The fabric is passed through the sealed chamber by means of gas-tight entrance and exit portals. A perforated drum is mounted within the chamber and the fabric is passed about the perimeter of the drum. Sealing elements cooperating with the drum confine ammonia gas introduced into the interior of the drum to flow only through those perforations covered by fabric. Undue accumulation of water which is a product of the reaction is avoided by both the slanted ceiling configuration of the chamber which promotes condensate runoff and the positive gas flow velocity established within the chamber which tends to draw water vapor from the reaction site.
REFERENCES:
patent: 3398464 (1968-08-01), Fleissner
patent: 3566629 (1971-03-01), Fleissner
patent: 3787360 (1974-01-01), Daigle
patent: 3799738 (1974-03-01), Wagner
patent: 3828589 (1974-08-01), Collinge
patent: 3837796 (1974-09-01), Fleissner et al.
Reeves et al., Textile Chemist & Colorist, Aug. 13, 1969, vol. 1, No. 17, pp. 365-369.
Reeves et al. "Chemistry of THPC--"; Colourage Annual 1971, 7 pp.
Caputo Michael A.
Lieberman Allan
McGann John P.
United Merchants and Manufacturers, Inc.
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