Merck Patent Gesellschaft MIT Beschrankter Haftung

Merck Patent Gesellschaft MIT

Merck Patent Geselleschaft MIT Beschrankter

Egbert M&uuml;ller

Lothar Britsch

Anja Seiler

Josef-Stefan St&ouml;hr

The invention relates to methods for separating biological contaminants (viruses, nucleic acids and/or endotoxins) from biological products, or for reducing the content of such biological contaminants in said biological products. The sample (biological product) to be purified is treated with an anion exchanger membrane. Said anion exchanger membrane is obtained by reacting a polyamide with an aminoreactive compound which is capable of polymerisation. This is followed by polymerisation with monomers which contain cationic groups or into which cationic groups can be introduced in a reaction analogous to polymerisation.

Removal of contaminants from biological products

The present invention relates to a process for removing an initiator of cerium (IV) salt from a graft product. The process may include washing the graft product with a mineral acid solution comprising ascorbic acid.

Method for removing initiators from grafting products

Azlactone-derivatized polyamides

Growing community of inventors

Darmstadt, Germany

Egbert Müller

Growing community of inventors

Darmstadt, Germany

Egbert M&uuml;ller

Egbert Müller