A process for the preparation of multi-crosslinked hyaluronic acid (ha) derivatives, multi-crosslinked ha, cross-linked ha to one or more different polymers of ha, cross-linked ha to a second polymer, product, and use of a multi-crosslinked ha derivative.

摘要

The present invention provides a process for the production of hyaluronic acid (HA) derivatives cross-linked with another polymer, in particular multiple e.g. double cross-linked hyaluronic acid derivatives. The invention also provides novel cross-linked derivatives, products containing them and their uses in cosmetic, medical and pharmaceutical applications.