Patent ID: 7416845
Filing Date: 2008-08-26
Classification: B01D,B01J,C12Q

Abstract:
1. A pH dependent ion exchange material having a carboxyl group, an amino group, and a polyethylene oxide moiety, which is used for isolating a nucleic acid, the pH dependent ion exchange material having at least two monomers selected from the group consisting of M0, M1, M2, M3 and M4 represented by the following formulae, provided that the pH dependent ion exchange material has at least one monomer selected from the group consisting of M1 and M2 and at least one monomer selected from the group consisting of M3 and M4: wherein A is a base selected from the group consisting of —NH(CH B is —(CH the pH dependent ion exchange material having a degree of polymerization of 2-30,000.