Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1975-07-09
1977-08-23
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
106168, 264210F, 536 30, C08B 500, C08B 1600, D01F 228
Patent
active
040440907
ABSTRACT:
A regenerated cellulosic product is produced by nitrosating and dissolving a cellulosic material in a solution comprising a dialkylacylamide solvent and adding from 2 to 25% by weight, based on the weight of the solution, of a tertiary amine to form a soluble cellulose nitrite ester, contacting the cellulose ester with a coagulant therefore, stretching the coagulated cellulose ester prior to complete regeneration thereof and then completing the regeneration of the cellulose to produce a regenerated cellulosic product.
REFERENCES:
patent: 3236669 (1966-02-01), Williams
patent: 3702843 (1972-11-01), Schweiger
Ott et al., Cellulose & Cellulose Derivatives, (2nd ed.) (Part II), (Interscience) (N.Y.), (1954), pp. 1013-1016.
Czaja Donald E.
Fletcher H. H.
Holt H. J.
International Telephone and Telegraph Corporation
Raden J. B.
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