Use of film-forming organopolysiloxanes for reducing the microfiber release of textiles

A process for reducing the release of microfibers during the washing process of textiles

• which are pretreated before the washing process with composition (Z) comprising
• (A) at least 0.1 parts by weight and at most 10.0 parts by weight of film-forming organopolysiloxanes, which are used in the form of their aqueous emulsions that comprise
• (i) 100 parts by weight of aminoalkyl group-containing polyorganosiloxane (P) that is liquid at 20° C. and comprises at least 80 mol % of units selected from units of the general formulae Ia, Ib, IIa and IIb
• R12SiO(2/2), (Ia)
• R1aR2SiO(3-a)/2, (Ib)
• R33SiO(1/2), (IIa)
• R32R4SiO(1/2), (IIb)
• in which
• a is 0 or 1,
• R1 is unsubstituted alkyl radicals having 1-40 carbon atoms,
• R2 is an aminoalkyl radical of the general formula III
• —R5—NR6R7, (III)
• where
• R5 is a divalent hydrocarbon radical having 1-40 carbon atoms,
• R6 is a monovalent hydrocarbon radical having 1-40 carbon atoms, hydrogen or an alkanoyl radical and
• R7 is a radical of the general formula IV
• —(R8—NR6)xR6, (IV)
• where
• X is an integer from 0 to 40 and
• R8 is a divalent radical of the general formula V
• —(CR9R9—)y, (V)
• where
• y is an integer from 1 to 6,
• R9 is hydrogen or a hydrocarbon radical having 1-40 carbon atoms,
• R3 are unsubstituted alkyl radicals having 1-40 carbon atoms,
• R4 are —OR or —OH radicals, and
• R are unsubstituted alkyl radicals having 1-40 carbon atoms, where in the polyorganosiloxane (P) the average ratio of the units of the general formulae Ia and Ib to the sum total of units of the general formulae Ila and IIb is 0.5 to 500 and polyorganosiloxane (P) has an average amine value of at least 0.1 mequiv/g,
• (ii) 1 to 80 parts by weight of silicon compound (D) (based on 100 parts by weight of the polyorganosiloxane (P)) selected from silicate compound (D1), the tetraalkoxysilicate of the general formula VI
• R10O4Si, (VI)
• polysilicate compound (D2), which comprises at least 80 mol % of units of the general formulae VII and VIII and at least two units of the general formula VII
• R10O3Si1/2, (VII)
• R10O2Si2/2, (VIII)
• where
• R10 are unsubstituted hydrocarbon radicals having 1-18 carbon atoms, MQ silicone resin (D3), comprising at least 80 mol % of units of the general formulae IX and X
• R113SiO1/2, (IX)
• SiO4/2, (X)
• where
• R11 has the meaning given for R1 or R4
• and the ratio of the units of the general formulae IX and X is 0.5 to 2.0 and at most 10% by
• weight of the radicals R11 are —OR and —OH,
• and mixtures of any desired proportions of (D1), (D2) and (D3),
• (B) at least 1 part by weight and at most 20 parts by weight of cationic surfactants and
• (C) at least 30 parts by weight and at most 99 parts by weight of water.