Substantially non-antigenic polymers containing pI and/or pH optimum modulating moieties are disclosed. The polymers are useful as intermediates for synthesis of amine-based polymers and in the formation of activated polymers for conjugation with nucleophiles. Conjugates and methods of preparation and...http://www.google.com.au/patents/US6177087?utm_source=gb-gplus-sharePatent US6177087 - Non-antigenic amine derived polymers and polymer conjugates
