Low viscosity polyorganosiloxanes comprising quaternary ammonium groups, methods for the production and the use thereof (II)

A polyorganosiloxane compound according to claim of the general formula (I):

• M-Y—[—(N+R2-T-N+R2)—Y-]m-M (I),
• or
• M-Y—[—(N+R2)—Y-]m-M (II)
• or
• M-Y—[—N+R2—Y-]m—[—(NR2-A-E-A′-NR2)—Y-]k-M (II′)
• wherein:
• m is >0,
• k is 0 or an average value of >0 to 50,
• h is 0 to 100,
• R is selected from monovalent organic groups having up to 22 carbon atoms and optionally one or more heteroatoms,
• M represents a terminal group c), selected from the groups consisting of:
• c1) at least one terminal monofunctional polyorganosiloxane group,
• c2) at least one terminal ester group, and
• c3) at least one terminal alkyl-terminated polyether group,
• wherein in the moiety:
• -A-E-A′-
• A and A′ each are independently selected from the group consisting of a single bond and a divalent organic group having up to 10 carbon atoms and optionally having one or more hetero atoms, and
• E is a poly-alkylene oxide group of the general formula:
• —[CH2CH2O]q—[CH2CH(CH3)O]r—[CH2CH(C2H5)O]s—
• with
• q=0 to 200,
• r=0 to 200,
• s=0 to 200
• and q+r+s=1 to 600,
• R2 is selected from hydrogen or R,
• Y is T, a group of the formulae:
• —K—S—K— and -A-E-A′- or -A′-E-A-,
• each as defined above, with the proviso that at least one Y is a group of the formula
• —K—S—K—
• with S=
• wherein R1═C1-C22-alkyl, C1-C22-fluoralkyl or aryl,
• n=0 to 1000, and these can be identical or different if several S Groups
• are present in the polyorganosiloxane compound,
• K=is a bivalent or trivalent straight chain, cyclic and/or branched C2-C40 hydrocarbon residue which is optionally interrupted by —O—, —NH—, trivalent N, —NR1—, —C(O)—, —C(S)—, and optionally substituted with —OH, wherein R1═C1-C22-alkyl, C1-C22-fluoralkyl or aryl, whereby the residues K can be identical or different from each other and
• T is selected from a divalent organic group having up to 20 carbon atoms and one or inure hetero atoms,
• X is least one functional group selected from the group consisting of:
• d) reactive groups,
• e) branching groups and
• f) polyalkylene oxide groups,
• wherein the repeating units having the indices m, k and h, may be arranged in any order.

A polyorganosiloxane composition comprising:

• A) at least one polyorganosiloxane compound, comprising
• a) at least one polyorganosiloxane group,
• b) at least one quaternary ammonium group, and
• c) at least one terminal ester group;
• and
• B) at least one polyorganosiloxane compound, which does not have quaternary ammonium groups, and which polyorganosiloxane compound B) comprises at least one terminal ester group;
• wherein in compound A) the molar ratio of the quaternary ammonium groups b) and the terminal ester groups c) is less than 100:10.