A hydrophilic washfast treatment for fibrous substrates that includes derivatives of amino-functional organopolysiloxanes of general formula (X)
- wherein
- k is an integer from 50 to 700,
- 1 is an integer from 1 to 30 and
- o is an integer from 0 to 30,
- R may be identical or different and represents a hydrogen atom or a monovalent, optionally fluorine-, chlorine- or bromine-substituted, C1-to C18-hydrocarbon radical,
- Z represents a group of general formula (V)
- wherein
- i is 0, 1, 2, 3 or 4,
- n is 2, 3, 4, 5 or 6,
- R2 represents a divalent, linear or branched C1-to C18-hydrocarbon radical,
- R3 represents a hydrogen atom, an optionally fluorine-, chlorine-, bromine-, hydroxy- or
- C1-to C5-alkoxy-substituted C1-to C18-hydrocarbon radical, or an acyl radical or a radical of general formula (VI),
- R4 represents a radical of general formula (VI),
- R5 represents a hydrogen atom or an optionally fluorine-, chlorine-, bromine-, hydroxy- or C1-to C5-alkoxy-substituted C1-to C18-hydrocarbon radical or an acyl radical,
- R6 represents an—OR7-radical,
- R7 represents a divalent linear or branched C2-to C8-hydrocarbon radical,
- Q represents a group of general formula (VII)
- wherein i and n are as defined above,
- R9 may be identical or different and represents a hydrogen atom, an optionally fluorine-, chlorine-, bromine-, hydroxy-or C1-to C5-alkoxy-substituted C1- to C18-hydrocarbon radical or an acyl radical,
- Y represents a radical of general formula (VIII) and/or (IX),
- wherein
- m is 0 or an integer from 1 to 100, and
- p is 2, 3 or 4,
- R1 represents a hydrogen atom or a C1-to C4-alkyl radical,
- R10 represents a hydrogen atom or a C1-to C18-hydrocarbon radical,
- R11 represents a hydrogen atom, a C1-to C10-hydrocarbon radical, or a group of formula —(C═O)—R12
- R12 represents a C1-to C10-hydrocarbon radical or an —OR13-radical, and
- R13 represents a C1-to C10-hydrocarbon radical,
- with the proviso that at least a portion of the radicals Y are radicals of formula (IX),
- with the proviso that impurities of octamethylcyclotetrasiloxane (D4 cyclics),
- decamethylcyclopentasiloxane (D5 cyclics) and dodecamethylcyclohexasiloxane (D6 cyclics) are present in proportions of less than 0.1% by weight in each case and after a storage time of 20 days at a temperature of 50° C. the proportions of D4 cyclics, representative of D4, D5 and D6, remain below 0.1% by weight in each case, based in each case on the total weight of the derivatives of amino-functional organopolysiloxanes,
- with the proviso that in addition to the radicals of the formula (VIII) which are hydroxyl or methoxy radicals, wherein from 5 mol % to 60 mol % of the radicals Y are radicals of the formula (IX) which are C4-C10-alkoxy radicals or C4-C10-monoalkyl glycol ether radicals, wherein the treatment, when applied to a 100% CO interlock knitted fabric, provides a droplet absorption time of less than 5 seconds.