Polyarylether membranes

Details Polyarylether membranes Polyarylether membranes

2011-07-12

2011-07-12

Gulakowski, Randy (Department: 1766)

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

Synthetic resins

From carboxylic acid or derivative thereof

C521S180000, C210S321600

Reexamination Certificate

active

07977451

ABSTRACT:
Membranes for use in methods and apparatuses for hemodialysis and hemofiltration are composed of at least one membrane comprising a polyarylethernitrile having structural units of formula 1, 2, 3 and 4whereinZ is a direct bond, O, S, CH2, SO, SO2, CO, RPO, CH2, alkenyl, alkynyl, a C1-C12aliphatic radical, a C3-C12cycloaliphatic radical, a C3-C12aromatic radical or a combination thereof;R is a C6-12aromatic radical or a C1-12aliphatic radical;R1and R2are independently H, halo, nitro, a C1-C12aliphatic radical, a C3-C12cycloaliphatic radical, a C3-C12aromatic radical, or a combination thereof;a is 0, 1, 2 or 3;b is 0, 1, 2, 3 or 4;m and n are independently 0 or 1; andQ and Z are different.

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