Process for the preparation of porous polymer particles based on acrylate and/or methacrylate
The present invention relates to a process for the preparation of porous polymer particles based on acrylate and/or methacrylate, comprising the steps of provision of a reaction mixture comprising at least one monomer chosen from the group consisting of acrylate and methacrylate compounds, and at least one monoterpene as porogen and of polymerization with the formation of porous polymer particles based on acrylate and/or methacrylate. The present invention also covers the porous polymer particles based on acrylate and/or methacrylate prepared in this way.
1. Process for the preparation of porous polymer particles based on acrylate and/or methacrylate, comprising the steps:
a) provision of the reaction mixture comprising at least one monomer chosen from the group consisting of acrylate and methacrylate compounds, and at least one monoterpene as porogen;
b) polymerization with the formation of porous polymer particles based on acrylate and/or methacrylate.
2. Process according to claim 1 , wherein the monoterpene or monoterpenes are chosen from the group consisting of citronellal, carvone, dihydrocarvone, menthone, cuminaldehyde, thujone, fenchone, camphor, safranal, borneol, carveol, α-terpeneol, dihydrocarveol, geraniol, nerol, nerolidol, citronellol, lavandulol, ipsdienol, ipsenol, piperitol pulegol, 1,8-cineol, 1,4-cineol, linalool perilla alcohol, myrcenol, sabinene hydrate, carvacrol, thymol, menthol, camphene, pinene, limonene, α-phellandrene, β-phellandrene, sabinene, terpinene, myrcene.
3. Process according to claim 1 , wherein the monoterpene is linalool.
4. Process according to claim 1 , wherein an additional porogen is added to the reaction mixture in step a).
5. Process according to claim 4 , wherein the additional porogen is an organic solvent.
6. Process according to claim 4 , wherein the additional porogen is chosen from the group consisting of alkanes, alcohols, cyclic alcohols, and aromatic hydrocarbons.
7. Process according to claim 1 , wherein the reaction mixture comprises linalool and toluene as porogens.
8. Process according to claim 1 , wherein the process is a process chosen from the group consisting of emulsion polymerization, soapless emulsion polymerization, seeded emulsion polymerization, the two-step swelling process in accordance with Ugelstad, multi step swelling processes, suspension polymerization, seeded suspension polymerization and dispersion polymerization.
9. Process according to claim 1 , wherein the process is a two-step swelling process in accordance with Ugelstad.
10. Process according to claim 1 , wherein the monomers used are acrylates or methacrylates with additional functional groups.
11. Process according to claim 10 , wherein said additional functional groups are groups which can be converted to quaternary ammonium groups.
12. Process according to claim 1 , wherein at least one acrylate or methacrylate with pronounced hydrophilic properties is used.