D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
400/1355, 18/593
D01D 5/22 (2006.01) D01F 2/08 (2006.01) D01F 2/10 (2006.01)
Patent
CA 1139914
ABSTRACT OF THE DISCLOSURE A regenerated cellulose fiber containing an alloying polymer of acrylic acid or methacrylic acid, or a copolymer containing acrylic and methacrylic acid moieties or an alkali metal or ammonium salt thereof or other anionic alloying polymers or copolymer is prepared by a process wherein the alloying polymer is mixed with a viscose solution of known unreacted sodium hydroxide concentration, the sodium hydroxide concen- tration in the resulting mixture is increased to compensate for any loss in concentration due to neutralization and/or dilution effects by the addition of the alloying polymer to the viscose. increasing the sodium hydroxide concentration greater than that required to restore the concentration to the original level has resulted in dramatic increases in absorbency. The resulting viscose solution is extruded into a spin bath in which the sulfuric acid concentration is reduced so that the resulting fibers will have at least 90% of the crimp of a fiber produced from the viscose solution without alloying polymer or copolymer.
332112
Allen Thomas C.
Denning David B.
Akzona Incorporated
Swabey Ogilvy Renault
LandOfFree
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