Composite membranes of poly (methyl methacrylate) blends, their

Details Composite membranes of poly (methyl methacrylate) blends, their Composite membranes of poly (methyl methacrylate) blends, their

1987-11-05

1990-04-24

Sever, Frank

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

210654, 210655, 21050029, 21050042, 264DIG48, 264DIG62, E01D 1300, E01D 1304

Patent

active

049198653

ABSTRACT:
Composite membranes are disclosed having a separation layer comprised of a mixture of poly(methy methacrylate) or a copolymer thereof and at least one cellulosic derivative resulting in enhanced separation and permeating characteristics of the overall composite membrane. Processes for making these composite membranes and the methods of using them are also disclosed. The membranes are particularly useful in gas separation applications and are most suited for the separation of hydrogen from a hydrogen containing stream.

REFERENCES:
patent: 3892665 (1975-07-01), Steigelmann et al.
patent: 4214020 (1980-07-01), Ward et al.
patent: 4230463 (1980-10-01), Henis et al.
patent: 4459210 (1984-07-01), Murakami et al.
patent: 4662905 (1987-05-01), Matsuura et al.
patent: 4664481 (1987-05-01), Anazawa et al.

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