Aqueous dispersions of amino-functionalized organopolysiloxanes pre-crosslinked with oxalatopolyethers

A precrosslinked organopolysiloxane (1) which comprises units of the formula

• R2SiO2/2 (I),
• and on average at least one structural unit of the formula
• SiR1O2/2—Y—SiR1O2/2 (III)
• where
• Y is a divalent radical of the formula
• —R2—[NR3—R4—]nNR3·C(O)—C(O)—NR3—Z—NR3—C(O)—C(O)—NR3—[R4—NR3—]nR2—
• Z is identical or different and is a divalent organic radical containing a polyoxyalkylene group,
• R may be identical or different and is a monovalent, unsubstituted or substituted, saturated or unsaturated hydrocarbon radical having 1 to 18 carbon atoms,
• R1 may be identical or different and is a radical R or a radical —O—R7,
• R2 is an SiC-bonded, divalent linear or branched hydrocarbon radical having 3 to 18 carbon atoms,
• R3 is a hydrogen atom, an alkyl radical having 1 to 8 carbon atoms or an acyl radical,
• R4 is a divalent hydrocarbon radical having 1 to 6 carbon atoms,
• R5 is identical or different and is a C1-C10 alkylene radical,
• R6 is a C1-C10 alkylene radical,
• R7 may be identical or different and is hydrogen or a monovalent hydrocarbon radical which has 1 to 18 carbon atoms and may be interrupted by one or more separate oxygen atoms,
• n is 0, 1, 2, 3 or 4, and
• m is an integer and is on average 1 to 80.

A process for producing the aqueous dispersions of precrosslinked organopolysiloxanes (1), wherein organopolysiloxanes (4) which comprise units of the formula

• R2SiO2/2 (I),
• and on average at least one structural unit of the formula
• R1ASiO2/2 (II)
• where
• R may be identical or different and is a monovalent, unsubstituted or substituted, saturated or unsaturated hydrocarbon radical having 1 to 18 carbon atoms,
• R1 may be identical or different and is a radical R or a radical —O—R7,
• A may be identical or different and is a radical of the formula
• —R2—[NR3—R4—]nNR32,
• R2 is an SiC-bonded, divalent linear or branched hydrocarbon radical having 1 to 18 carbon atoms,
• R3 is a hydrogen atom, an alkyl radical having 1 to 8 carbon atoms or an acyl radical,
• R4 is a divalent hydrocarbon radical having 1 to 6 carbon atoms,
• R7 may be identical or different and is hydrogen or a monovalent hydrocarbon radical which has 1 to 18 carbon atoms and may be interrupted by one or more separate oxygen atoms, and
• n is 0, 1, 2, 3 or 4,
• are reacted with oxalamidoester-terminated polyethers (5) of the formula (V)
• where
• Z is identical or different and is a divalent organic radical containing a polyoxyalkylene group, and
• R8 is identical or different and is a monovalent hydrocarbon radical which has 1 to 18 carbon atoms and may be interrupted by one or more separate oxygen atoms, in the presence of emulsifiers (2) and water (3).