Akzo N.v.

G J Boer

Wolfgang Lange

A composite body for long-term delivery of effective substances has a carrier for effective substances composed of a microporous polymer, and a coating composed of cellulose nitrate. The carrier can be composed of a thermoplastic polymer with a substantially isotropic microporous cellular polymer structure with a plurality of substantially spherical cells of a mean diameter between 0.5 and 100 micrometers. The cells are connected with one another by pores. The composite body serves for long-term delivery of peptides, hormones, neurotransmitters, particularly vasopressin and oxytocin.

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Muidenberg, Netherlands

G J Boer