abstract |
Containing hydrophobic drug systemna) a carboxyl-containing polysiloxane, which is characterizednin that the polysiloxane chain contains at least one structural unit of the formula (1)n€ ƒ € ƒ € ƒ € ƒ € ƒ € ƒ € ƒ € ƒ [AR a SiO (3-a) / 2] k € ƒ € ƒ € ƒ € ƒ € (1)nand / or at least one structural unit of the formula (2)n€ ƒ € ƒ € ƒ € ƒ € ƒ € ƒ € ƒ € [R c SiO (4-c) / 2] n € ƒ € ƒ € ƒ € ƒ € (2)nand optionally at least one end group selected from the formulasn€ ƒ € ƒ € ƒ € ƒ € ƒ € ƒ € ƒ € ƒ R 3 SiO 1/2 € ƒ € ƒ € ƒ € ƒ € ƒ (3)nandn€ ƒ € ƒ € ƒ € ƒ € ƒ € ƒ € ƒ € ƒ AR 2 SiO 1/2 € ƒ € ƒ € ƒ € ƒ € ƒ (3a)ncontains, wherenA, R, a, k, c and n have the meaning given in the description,nandnb) at least one component from the group B 1 to B 4, whereinnB 1nis an anionic copolymer,nB 2nPolyaspartic acid or a derivative thereof,nB 3na paraffin is andnB 4nis an isocyanate addition product. |