Polymers for hydrophobic and oleophobic textile finishing

16:

• An aqueous emulsion, comprising:
• a copolymer comprising the following three components:
• component a) having at least one biuret or isocyanurate substructure,
• component b) selected from the group consisting of polysiloxanes and polyhydrocarbons, and
• component c) comprising a hydrocarbon which is different from component b) and has at least 6 carbon atoms and not more than 3 heteroatoms selected from the group consisting of N, O, and S,
• wherein component b) is joined to 2 different or identical components a) via at least two positions, and
• wherein the copolymer is free of isocyanate groups.

21:

• The aqueous emulsion according to claim 16, wherein the copolymer has:
• as component a), independently identical or different biuret substructures of the formula (III) and isocyanurate substructures of the formula (IV)
• wherein
• L is a divalent radical of tolyl (2,4-;
• 2,6-), ethylphenyl, 1,5-naphthyl, α,ω-tetramethylene, α,ω-hexamethylene, α,ω-dodecamethylene, α,ω-2-methylpentamethylene, α,ω-2,2,4-trimethylhexamethylene, cyclohexyl (1.4-), 1-methylcyclohexyl (1,3-;
• 1,4-;
• 2,6-), 2,2,6-trimethylcyclohexyl, isophorone (3,3,5-trimethylcyclohexyl), 4,4′-dicyclohexylmethyl, 4,4′-dicyclohexylpropane-(2,2), 4,4′-diphenylmethane;
• Rx is independently a bonding site to component b) and component c);
• and
• denotes a urethane group or urea group in the case of the bond to component b);
• or denotes a urethane group, a urea group or a thiourea group in the case of the bond to component c);
• wherein the urethane group, the urea group, and the thiourea group are bonded via the nitrogen atom to formula (III) and formula (IV),
• or
• Rx denotes a bond to a further biuret or isocyanurate substructure:
• as component b), a polysiloxane of the formula (I)
• M1a1M2a2M3a3D1b1D2b2D3b3TcQd (I)
• wherein
• M1=[R13SiO1/2], M2=[R2R12SiO1/2], M3[R3R12SiO1/2],
• D1=[R12SiO2/2], D2=[R1R2SiO2/2], D3=[R1R3SiO2/2],
• T=[R1SiO3/2],
• Q=[SiO4/2],
• a1=0 to 20;
• a2=0 to 10;
• a3=0 to 20;
• b1=1 to 1000;
• b2=0 to 10;
• b3=0 to 20;
• c=0 to 10;
• d=0 to 50;
• with the proviso that at least one of a3 and b3 is greater than 1;
• R1=independently identical or different linear or branched, saturated or unsaturated hydrocarbyl radicals having 1 to 30 carbon atoms or aromatic hydrocarbyl radicals having 6 to 30 carbon atoms;
• R2=independently identical or different linear or branched, saturated or unsaturated, optionally substituted hydrocarbyl radicals, wherein substituents are selected from the group consisting of methoxy, ethoxy, propoxy, butoxy, pentoxy, and glycidyloxy;
• R3=a divalent hydrocarbon having 2 to 8 carbon atoms, a second bond of which is the bonding site to component a) via a urethane or urea group;
• and
• as component c), hydrocarbons having exactly one bonding site to component a), the hydrocarbons having, aside from carbon and hydrogen, not more than 3 heteroatoms.

22:

• The aqueous emulsion according to claim 21, wherein the copolymer has:
• in component a), as the divalent radical L in the formula (III) or the formula (IV), hexamethylene, 4,4′-diphenylmethane, and/or isophorone;
• in component b), a siloxane of the formula (I) wherein
• a3=2 to 5,
• a1=0 to 1,
• a2=0,
• b2 and b3=0;
• d=0, and
• R1=methyl or phenyl;
• and
• in component c), a hydrocarbon which is free of heteroatoms and has at least one aromatic ring.