Biodegradable colloidal particles for pulmonary applications in particular

Abstract From the Canadian patent

The invention concerns a compound formed from a biologically degradable water--soluble comb polymer based on a polyol backbone with side chains carrying , amino groups, and, as a stabilizer at least one negatively charged organic base, which can be a Lewis or Br.slzero.nsted base or its corresponding acid, which , can be a Lewis or Br.slzero.nsted acid, wherein the acid groups of the stabilizers are available in , excess or deficiency in relation to the primary secondary or tertiary amino , groups , or the basic groups are available in excess or deficiency in relation to the quaternary amino groups of the comb polymers so that the colloidal particles , feature a positive or negative …