Composition, particularly for cosmetics and pharmaceuticals, containing star shaped polymers, the polymers themselves and their use

摘要

Polymers (I) having a star structure and cosmetic or pharmaceutical compositions containing them. The polymers are of formula A-((M1)p1-(M2)p2.....(Mj)pj)n (I) A = a multifunctional center, having a functionality of n; n = an integer of 2 or more; -((M1)p1-(M2)p2.....(Mj)pj) = a polymeric chain comprising polymerized monomers Mi which may be the same or different having a polymerization index pj, each branch being the same or different and being linked covalently to the center A; i = 1 or more; and pj = 2 or more. The polymer comprising one or more monomers Mi of which the corresponding homopolymer has a glass transition temperature, T of 10 degrees C or more, preferably over 20 degrees C, the monomers Mi comprising at least 45 % of the final polymer, especially 75 90 % by weight.