28-01-2016 дата публикации
Номер: US20160024241A1
Принадлежит:
A process for the preparation of a polymer nanoparticle by a photoinduced emulsion polymerization includes preparing an emulsion comprising at least one surfactant, a dispersed phase and a continuous phase. The dispersed phase comprises at least one polymerizable monomer and the continuous phase comprises water and at least one photoinitiator. The at least one polymerizable monomer is polymerized by exposing the emulsion to an electromagnetic radiation having a wavelength so as to induce a generation of radicals from the at least one photoinitiator. The at least one photoinitiator is selected from at least one compound of formula (I) 2. The process as recited in claim 1 , wherein in formula (I):n is 1,m is 2,{'sup': '1', 'sub': 1', '18, 'claim-text': [{'sup': 4', '+', '4', '−, 'sub': '2', 'not, once, twice or more than twice interrupted by non-successive functional groups selected from the group consisting of —O—, —NR—, and —N(R)An—,'}, {'sub': 1', '8', '3', '3', '2', '2', '2', '2', '3', '2', '2', '1', '8, 'sup': 4', '4', '+', '4', '−', '4, 'is not, additionally or alternatively either once, twice or more than twice substituted by substituents selected from the group consisting of halogen, C-C-alkoxy, hydroxy, —SOM, —COOM, POM, SON(R), —N(R), —N(R)An, —CON(R), and C-C-alkylsulfate,'}], 'Ris C-C-alkyl, which is'}{'sup': '2', 'sub': 6', '14, 'Ris s C-C-aryl,'}whereby{'sup': 4', '4', '+', '4', '−', '+', '4', '−, 'sub': 1', '8', '6', '14', '7', '15', '2', '2', '3, 'Ris independently selected from the group consisting of hydrogen, C-C-alkyl, C-C-aryl, C-C-arylalkyl and heterocyclyl, or N(R)as a whole is an N-containing heterocycle, or N(R)Anand N(R)Anas a whole is or contains a cationic N-containing heterocycle with a counteranion,'}M is hydrogen, lithium, sodium, potassium, one half equivalent of calcium, zinc or iron (II), or one third equivalent of aluminum (III), or is an ammonium ion, or a primary, secondary, tertiary or quaternary organic ammonium ion, and{'sup': ...
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