Patent ID: 7622131

Claim:
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 1 and Q 2 and Q 3 are identical and denote one or more structural elements that are capable of forming at least four hydrogen bridges and that are attached via a linker through a silicon-carbon bond to the polymer; or (b) Q 1 and Q 3 are identical and denote one or more structural elements that are capable of forming at least four hydrogen bridges that are attached via a linker through a silicon-carbon bond to the polymer and Q 2 is defined as R1; or (c) Q 1 denotes one or more structural elements that are capable of forming at least four hydrogen bridges that are attached via a linker through a silicon-carbon bond to the polymer and Q 2 and Q 3 are defined as R1; or (d) Q 2 denotes one or more structural elements that are capable of forming at least four hydrogen bridges that are attached via a linker through a silicon-carbon bond to the polymer and Q 1 and Q 3 are equal and are defined as R1; (e) Q 4 denotes one or more structural elements that are capable of forming at least four hydrogen bridges having two linkers that are attached through a silicon-carbon bond to the polymer chain; 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.