Increased strength polymer-blended membranes

Details Increased strength polymer-blended membranes Increased strength polymer-blended membranes

1984-06-01

1986-09-02

Spear, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

55 16, 2105001, 264185, B01D 1300

Patent

active

046094687

ABSTRACT:
Polymer blend membranes which possess increased structural strength may be fabricated by preparing a polymer blend membrane comprising a mixture of a phosphoric acid or sulfuric acid and an organic polymer which is at least partially compatible therewith dissolved in a mutually miscible solvent. The resulting polymer blend membrane is then cast upon a porous solid support such as a glass cloth, polysulfone or ceramic and the solvent is allowed to evaporate.

REFERENCES:
patent: 3926798 (1975-12-01), Cadotte
patent: 4071454 (1978-01-01), Yamamoto et al.
patent: 4214994 (1980-07-01), Kitano et al.
patent: 4264676 (1981-04-01), Uzumaki et al.
patent: 4406673 (1983-09-01), Yamada et al.

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