Patent ID: 8945522
Filing Date: 2015-02-03
Classification: A61K,A61P,A61Q,C07F,C08G

Abstract:
1. An organosilicon progressive photoprotective polymer obtainable by a process which comprises the reaction of a monomer of formula (I): wherein: R is selected from the group consisting of (i), (ii), (iii), and (iv): R R R R R R R R R R R R A is H, linear or branched (C L is a single bond, —CH Z is NH or O; Ra is linear or branched (C Rb is linear or branched (C Rc is linear or branched (C R′ R′ R′ R′ R n is an integer selected from 0 and 1; p is an integer selected from 2, 3 and 4; s is an integer selected from 0 and 1; t is an integer selected from 0 and 1; with a compound of formula (IV): wherein: Rd is a linear or branched (C Re, Rf and Rg are independently a linear or branched (C w in an alkanol/water mixture, wherein the alkanol is a linear or branched alkanol having 1 to 6 carbon atoms, and in the presence of a nitrogen-containing basic compound selected from the group consisting of ammonia, mono-alkylamine, di-alkylamine, tri-alkylamine, mono-alkanolamine, di-alkanolamine, and tri-alkanolamine, wherein both alkyl and alkanol groups are linear or branched having 1 to 6 carbon atoms, characterized in that the organosilicon progressive photoprotective polymer exhibits a micro- or nanoparticle form.