Patent ID: 7622131
Filing Date: 2009-11-24
Classification: A61K,A61Q,C08G

Abstract:
1. A polysiloxane having the following general formulae (3a) or (3b): in which each R1 independently denotes a substituted or unsubstituted monovalent nonaromatic ethylenically free C 1 -C 20 hydrocarbon radical or an aromatic radical; (a) Q (b) Q (c) Q (d) Q (e) Q wherein the one or more structural elements Q 1 -Q 4 have the general formula (4) or a tautomer thereof: wherein either of R2, R3 or R4 denotes a linking moiety through which the structural elements Q 1 -Q 4 bond to the polysiloxane, and wherein: (i) R2 is the linking moiety and R3 and R4 are independently a hydrogen atom, alkyl or oligoethylene group; or (ii) R2 and R3 or R2 and R4 represent the linking moiety and R4 or R3, respectively, are independently a hydrogen atom, alkyl or oligoethylene group; and m, n and c are integers such that the mean molecular weight of the polysiloxane ranges from 500 to 250000 Daltons.