Claims
- 1. A process for modifying hydrophilic fibers with a substantially water-insoluble inorganic substance, comprising the steps of:
- immersing hydrophilic fibers in an aqueous solution of a water-soluble inorganic compound (a) selected from the group consisting of aluminates, silicates and zincates of alkali metals, in a concentration of 11 to 50% by weight;
- adjusting the amount of the water-soluble inorganic compound (a) aqueous solution impregnated in the hydrophilic fibers to a level of 60 to 400% based on the dry weight of the hydrophilic fibers; and
- bringing the impregnated hydrophilic fibers into contact with the precipitant (b) comprising an aqueous solution containing at least one acid compound selected from the group consisting of hydrochloric acid and sulfuric acid to cause the resultant substantially water-insoluble compound to be precipitated in and fixed, in an amount of 11 to 150% based on the dry weight of the hydrophilic fibers, to the hydrophilic fibers.
- 2. The process as claimed in claim 1, wherein the hydrophilic fibers are selected from polyvinylalcohol fibers, polyacrylamide fibers and lignocellulosic fibers.
- 3. The process as claimed in claim 2, wherein the cellulosic fibers are pulp fibers.
Priority Claims (2)
Number |
Date |
Country |
Kind |
2-121221 |
May 1990 |
JPX |
|
2-162946 |
Jun 1990 |
JPX |
|
RELATIONSHIP TO OTHER APPLICATIONS
This application is a continuation in part of our copending application Ser. No. 07/699,071, filed May 13, 1991 now U.S. Pat. No. 5,122,230.
US Referenced Citations (11)
Foreign Referenced Citations (3)
Number |
Date |
Country |
62-162098 |
Jul 1987 |
JPX |
62-199898 |
Sep 1987 |
JPX |
726803 |
Mar 1955 |
GBX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
699071 |
May 1991 |
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