Preparation procedure of organic tin progressive light protective powder； use of organic tin progressive light protective powder, including composition, precursor and preparation procedure of such precursor
This application relates to organosilicon Polymers containing Esters of benzoic acid in the form of particles, Process for their preparation, Dermatological or cosmetic composition which comprises, as well as its use to protect a Body of a human or animal Alive The UV Radiation.Claim 1: a procedure for the preparation of a Progressive organosilicon photoresist Polymer, characterized in that it comprises the reaction of monomers of formula (1): in which R is selected from the group consisting of compounds of the formula (2), (3) and (4), in which R u00b9 R u00b2 r u00b3:,,, and r u2074 r u2075 are selected independently from the group consisting of H,C u2081 u208b u2086 linear or branched alkyl, cycloalkyl c u2083 u208b u2086, or u00b9 u2070, nh u2082, nhr u00b9 u00b9, nr u00b9 u00b2r u00b9 u00b3, COOH, coor u00b9 u2074, conh u2082, conhr u00b9 u2075, conr u00b9 u2076r u00b9 u2077, so u2082nh u2082, so u2082nhr u00b9 u2078 so u2082nr u00b9 u2079r u00b2 u2070, and under the condition that at least one of r u00b9, R u00b2, r u00b3, r u2074 and r u2075 is not always that the h Least one of r u00b9 and r u2075 h； r u2076, r u2077, r u2078 and r u2079 are selected irrespective of hydrogen c u2081 u208b u2086 linear or branched alkyl, cycloalkyl, c u2083 u208b u2086, or u00b9, nh u2082,Nhr u00b2 and nr u00b3r u2074； r u00b9 u2070 is linear or branched alkyl or cycloalkyl c u2081 u208b u2086 c u2083 u208b u2086； r u00b9 u00b9 is c u2081 u208b u2086 linear or branched alkyl or cycloalkyl c u2083 u208b u2086； r u00b9 u00b2 is c u2081 u208b u2086 linear or branched alkyl or cycloalkyl c u2083 u208b u2086； r u00b9 u00b3 is linear or branched alkyl c u2081 u208b u2086 or cycle Rent c u2083 u208b u2086； or r u00b9 u00b2 and r u00b9 u00b3 taken together with the nitrogen Atom to which they are United to form a Ring of pyrrolidineR u00b9 u2074 alkyl morpholine or piperidine； c u2081 u208b u2086 is linear or branched alkyl or cycloalkyl c u2083 u208b u2086； r u00b9 u2075 is c u2081
