| 摘要 |
A method (M1) for the production of first generation statistical microgels (I) comprises a stage involving the controlled radical polymerisation of a mixture of (a) mono-unsaturated monomer(s), (b) polyunsaturated monomer(s), (c) a source of free radicals and (d) a polymerisation regulator. Independent claims are also included for (1) a method (M2) for the preparation of 2nd generation statistical microgels by performing M1 as above and then adding the product (I) to mono- or poly-unsaturated monomer(s) in presence of an activator (2) a method (M3) for the preparation of nth generation microgels (I-n) (where n = 2-50) by making an (n-1)-th generation microgel as above and then adding the product to mono- or poly-unsaturated monomer(s) in presence of an activator (3) star-shaped polymers (SP) obtained by a method for the preparation of (I-n) (with n = 2-50) in which the monomer(s) used in stage n is/are mono-unsaturated monomer(s). |
