Linear polydialkylorganosiloxanes having polyoxyalkylene and amino-functional groups which additionally have terminal alkoxy groups

A linear polydialkylorganosiloxane having polyoxyalkylene and amino-functional groups which additionally has terminal alkoxy groups, of the general formula (I)

• where
• a=5 to 500,
• b=1 to 100,
• the radicals
• R1=identical or different aliphatic or aromatic hydrocarbon radicals having up to 8 carbon atoms, and
• R2═R1, R2a or R2b, with the proviso that on statistical average a radical R2a is present in at least every tenth siloxane repeating unit, and at least one radical R2b is present in each siloxane repeating unit,
• where
• the radical R2a is selected from the radicals of an amino-functional group of the general formula (II)
• —[(R4)c—NR5]d—R6
• where
• R4=a divalent C1 to C12 hydrocarbon radical, an —OCH2CH2— group or an OCH2CH(CH3)— group,
• R5=a monovalent C1 to C12 hydrocarbon radical or a hydrogen atom,
• R6=a monovalent aliphatic or aromatic, optionally substituted C1 to C12 hydrocarbon radical or a hydrogen atom,
• where
• c=1 to 10, and
• d=1 to 5,
• the radical R2b is a polyoxyalkylene group of the general formula (III)
• —(CH2)e(OC2H4)f(OC3H6)gOR6
• where
• e=2 to 10,
• f=2 to 20,
• g=0 to 20,
• and R3═R1 or a group of the general formula (IV)
• —OR1
• with the proviso that on statistical average at least one radical of the general formula (IV) is present on the siloxane backbone.