| abstract |
The present invention concerns a crosslinkable composition comprising: A) at least one polymerisable monomer or a mixture of polymerisable monomers or a mixture of polymerisable monomers and macromonomers bearing at least one polymerisable C=C function of the acrylate, methacrylate, maleate, fumarate, itaconate, citraconate, styrene or vinyl type; B) at least one polyol chosen from oligoglycerols, linear, branched and hyperbranched polyglycerols, or a mixture of hyperbranched polyglycerol and a polyol chosen from oligoglycerols, and linear, branched and hyperbranched polyglycerols, comprising, on average, more than 1 hydroxyl group functionalised with a group bearing a polymerisable C=C function of the acrylate, methacrylate, maleate, fumarate, itaconate, citraconate, styrene or vinyl type; C) a free radical initiator or a mixture of free radical initiators capable of initiating polymerisation by thermal, redox or photochemical means; and D) optionally, at least one additive chosen from antioxidants, physico-chemical property adjusting agents, agents for promoting, modulating and/or controlling oxygen permeability, plasticisers, humectants, lubricants, viscosity modifiers, compatibilising agents, colouring agents, filtering agents, antimicrobial agents, therapeutic agents and anti-biofilm bacterial agents. The present invention also concerns a crosslinked composition capable of forming a hydrogel polymer, a hydrogel, a method for preparing a crosslinked composition and an item capable of being obtained by this method. |