Polymer of hyaluronate and of glucomannan
AssigneeBASF Beauty Care Solutions France S.A.S.
InventorsIsabelle Bonnet, Florent Durieux, Eric Nappi
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Abstract
The present invention concerns a sphere, characterized in that it comprises at least one polymer of hyaluronate and glucomannan. It also concerns a polymer of hyaluronate and glucomannan characterized in that each bond between a hyaluronate group and a glucomannan group is an ester bond. In addition, it concerns their production process and their use, in particular as a filling or hydration agent.
Claims21
A sphere formed by a polymer of hyaluronate and glucomannan, said polymer consisting of one or more than one hyaluronate group and one or more than one glucomannan group, said one or more than one hyaluronate group and said one or more than one glucomannan group being cross-linked together via at least one ester bond
- wherein the one or more than one hyaluronate group of the polymer is of low weight average molecular weight in the range 10 kDa to 40 kDa and wherein the sphere has a D50 diameter measured by laser diffraction of 3 μm to 80 μm.
A sphere obtained by a process comprising the following steps:
- a) producing an emulsion:
- i) between at least a first phase consisting of one or more than one hyaluronate compound and one or more than one glucomannan compound, said compounds being soluble in said first phase;
- and
- ii) at least one second phase that is not miscible with the first phase;
- b) cross-linking said one or more than one hyaluronate compound and one or more than one glucomannan compound together in the presence of at least one cross-linking agent, said cross-linking agent being soluble in said second phase;
- and
- c) recovering spheres wherein the hyaluronate has a low weight average molecular weight in the range 10 kDa to 40 kDa and wherein the sphere has a D50 diameter measured by laser diffraction of 3 μm to 80 μm.
Dependencies are inferred from the claim text.