Hollow fiber semipermeable membrane element and a method of prod

Details Hollow fiber semipermeable membrane element and a method of prod Hollow fiber semipermeable membrane element and a method of prod

1987-11-12

1988-09-13

Gibson, Sharon A.

Liquid purification or separation

Casing divided by membrane into sections having inlet

Each section having inlet

428373, 428375, 428376, 428390, 428394, 428398, 21050023, 21032169, 21050021, B01D 1301

Patent

active

047707780

ABSTRACT:
There is disclosed a hollow fiber semipermeable membrane element comprising hollow fiber semipermeable membranes having their respective one end portions or both end portions bonded together by means of a vulcanized rubber, so that the semipermeable membrane element has a high resistance to chemicals. The incorporation of a graphite fluoride in the rubber serves to further increase not only the hardness of the bonding rubber portions but also the resistance of the bonding rubber portions to chemicals. Such a semipermeable element can be easily, efficiently produced on a commercial scale.

REFERENCES:
patent: 2433546 (1947-12-01), Cornelius
patent: 3315740 (1967-04-01), Withers
patent: 3423491 (1969-01-01), McLain et al.
patent: 3658976 (1972-04-01), Slade
patent: 4035459 (1977-07-01), Kesting
patent: 4211602 (1980-07-01), Brumfield
patent: 4214020 (1980-07-01), Ward et al.
patent: 4231877 (1980-11-01), Yamauchi et al.
Pamphlet of Central Glass Company, Ltd., Japan.
N. Watanabe, Two Types of Graphite Fluorides, Solid State Ionics, 1, (1980), 87-110.

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