Partially polyenized polyvinyl alcohol fibers with ion-exchange

Details Partially polyenized polyvinyl alcohol fibers with ion-exchange Partially polyenized polyvinyl alcohol fibers with ion-exchange

1976-10-29

1978-11-14

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 33, 526 27, C08F11606, C08F 836, B01D 1504

Patent

active

041254864

ABSTRACT:
A partially polyenized polyvinyl alcohol fiber is obtained by heating and dehydration polyvinyl alcohol type fibers at temperatures of about 80.degree. to 350.degree. C so that the dehydration weight loss falls within the range of about 5% to 40%. An ion-exchange radical is introduced into the partially polyenized polyvinyl alcohol fiber to obtain fibers with an ion-exchange capacity. The ion-exchange fiber thus obtained exhibits an exchange capacity comparable to ion-exchange resins and has practical properties as fibers, such as good chemical resistance and flexibility.

REFERENCES:
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patent: 2890180 (1959-06-01), Cerny et al.
patent: 3068061 (1962-12-01), Johnson et al.
patent: 3210147 (1965-10-01), Johnson et al.
patent: 3226380 (1965-12-01), Knight
patent: 3275575 (1966-09-01), Fogle
patent: 3459724 (1969-08-01), Hartel et al.
patent: 3859269 (1975-01-01), Maurer

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