Method for manufacturing hydrogel tubes

Details Method for manufacturing hydrogel tubes Method for manufacturing hydrogel tubes

1976-11-01

1980-01-15

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

128260, 260 296AN, 264 49, 264173, 264177F, 264182, 424 15, 428398, B05D 300

Patent

active

041838840

ABSTRACT:
There is disclosed a method of producing hydrogel tubes comprising partially hydrolyzing an acrylonitrile-containing polymer in an inorganic acidic solvent solution at temperature of about -10.degree. to 50.degree. C., extruding said hydrolyzed polymer solution through a circular nozzle into an aqueous coagulating bath, the same or similar coagulating bath simultaneously being fed through a central tube or pin of the nozzle.
Preferably, the surface of the tube is made very slippery in wet condition, by treating it with chemical agents causing either a further hydrolysis or other reaction leading to carboxylic, sulfonic or sulfuric groups, or an esterification with polyols such as glycerol, glycols or polyvinyl alcohol, preferably with simultaneous sulfonation or sulfuration.

REFERENCES:
patent: 3674628 (1972-07-01), Fabre
patent: 3679355 (1952-01-01), Yamaguchi et al.
patent: 3728072 (1973-04-01), Orito et al.
patent: 3733386 (1973-05-01), Shimoda et al.
patent: 3799356 (1974-03-01), Salyer et al.
patent: 3802954 (1974-04-01), Orito et al.
patent: 3812071 (1974-05-01), Stoy
patent: 3862452 (1975-01-01), Wichterle et al.
patent: 3864323 (1975-02-01), Stoy
patent: 3871950 (1975-03-01), Hashino et al.
patent: 3897382 (1975-07-01), Stoy et al.
patent: 4021382 (1977-05-01), Stoy et al.
patent: 4061821 (1977-12-01), Hayano et al.

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