Quaternary amino alcohol functional organosilicon compounds, composition containing the latter and their production and use

1. A quaternary-amino alcohol-functional, organosilicon compound, comprising

a quaternary-amino alcohol-functional silanol and a quaternary-amino alcohol-functional siloxanol oligomer with Si—O-crosslinked structural elements, which form catenate, cyclic and/or crosslinked structures and which are obtainable from a reaction of at least one silane of the formulae II, IV or at least one hydrolysis, condensation or co-condensation product starting from silanes of the formula II and/or IV, water and at least one amino alcohol of the formula III and optionally the hydrolysis alcohol formed in this reaction is at least partly removed from the system,

where at least one structure of said quaternary-amino alcohol-functional, organosilicon compounds is represented by general formula I,

(R 1 O)[(R 1 O) 1−x−y (R 2 ) x Si(C + ) 1+y O] a R 1 [ a ·(1+ y )]Hal −   (I)

where C + in formula I is independently a group of the formula V

[—(R 3 ) n CH 2 —N + [—(CH 2 ) m OH] z (R 4 ) 3−z ] 1+y   (V),

wherein, in formula I,

each R 1 is, independently, hydrogen or a linear, branched or cyclic alkyl group having 1 to 8 C atoms,

each R 2 is, independently, a linear, branched or cyclic alkyl group having 1 to 8 C atoms or is an aryl, arylalkyl or acyl group,

wherein, in formula V

each R 3 is, independently, a linear, branched or cyclic alkylene group having 1 to 18 C atoms,

each R 4 is, independently, a group comprising from 1 to 16 carbon atoms, wherein, in formulae I and V, independently, n is 0 or 1, m is an integer between 1 and 16 and z is 1 or 2 or 3, and Hal is chloro or bromo, and x is 0 or 1, y is 0 or 1 and (x+y) is 0 or 1,

and a is greater than or equal to 1,

where the silane of formula II is a haloalkylsilane,

(R 1 O) 3−x−y (R 2 ) x Si[(R 3 ) n CH 2 Hal] 1+y   (II),

and the silane of the formula IV is a quaternary-amino alcohol-functional silane:

(R 1 O) 3−x−y (R 2 ) x Si[(R 3 ) n CH 2 —N + [—(CH 2 ) m OH] z (R 4 ) 3−z ] 1+y ·(1+ y )[Hal − ]   (IV),

and the amino alcohol corresponds to the formula III,

[HO—(CH 2 ) m —] z N(R 4 ) 3−z   (III),

wherein, in formulae II, III and IV, each R 1 is, independently, a hydrogen, a linear, branched or cyclic alkyl group having 1 to 8 carbon atoms, or an aryl, arylalkyl or acyl group,

each R 2 , independently, is a linear, branched or cyclic alkyl group having 1 to 8 carbon atoms or is an aryl, arylalkyl or acyl group,

R 3 , R 4 , Hal and also n, m and z, independently of one another, are as defined above, and x is 0, 1 or 2, y is 0, 1 or 2 and (x+y) is 0, 1 or 2.

2. A composition comprising a quaternary-amino alcohol-functional, organosilicon compound according to claim 1 , and water, obtainable by a process that comprises:

reacting, as component A

(i) at least one haloalkyl-functional alkoxysilane of general formula II

(R 1 O) 3−x−y (R 2 ) x Si[(R 3 ) n CH 2 Hal] 1+y   (II),

wherein

each R 1 is identical or different and is a hydrogen, a linear, branched or cyclic alkyl group having 1 to 8 carbon atoms, or an aryl, arylalkyl or acyl group,

each R 2 is identical or different and is a linear, branched or cyclic alkyl group having 1 to 8 carbon atoms or is an aryl, arylalkyl or acyl group,

each R 3 is identical or different and is a linear, branched or cyclic alkylene group having 1 to 18 carbon atoms,

n is 0 or 1 and Hal is chloro or bromo,

and x is 0, 1 or 2, y is 0, 1 or 2 and (x+y) is 0, 1 or 2,

or

(ii) a hydrolysis or condensation product of at least one alkoxysilane of the aforementioned general formula II

or

(iii) a mixture of at least one alkoxysilane of the aforementioned general formula II and a hydrolysis and/or condensation product of at least one alkoxysilane of the aforementioned general formula II

with an amino alcohol of general formula III as component B,

[HO—(CH 2 ) m —] z N(R 4 ) 3−z   (III),

in which each R 4 is identical or different and is a group comprising 1 to 16 carbon atoms, m is an integer between 1 and 16 and z is 1 or 2 or 3,

carrying out at least a part of the process in the presence of a defined amount of water, and optionally removing the resultant hydrolysis alcohol at least partly from the system.

3. The composition as claimed in claim 2 , wherein

the reaction of component A and of component B is carried out in the presence of a defined amount of water, or component A is reacted with component B and the product is subsequently hydrolyzed in the presence of a defined amount of water.

4. The composition as claimed in claim 2 , wherein component B is at least one member selected from the group consisting of N,N-dimethylethanolamine, N,N-diethylethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, and N-triethanolamine.

5. The composition as claimed in claim 2 , wherein

water is present in an amount of 0.5 to 500 mol of water per mole of silicon atoms present in component.

6. The composition as claimed in claim 2 , wherein the water is metered continuously or discontinuously to component A, optionally in a mixture with component B, or to the quaternary-amino alcohol-functional, organosilicon compound of formula IV

(R 1 O) 3−x−y (R 2 ) x Si[(R 3 ) n CH 2 —N + [—(CH 2 ) m OH] z (R 4 ) 3−z ] 1+y ·(1+ y )[Hal − ]   (IV)

that is formed, the water added discontinuously with stirring where in formula IV R 1 , R 2 , R 3 , R 4 , x, y, z, n and m have the above-defined definition.

7. The composition as claimed in claim 2 , wherein portionwise in each case, the defined amount of water is 0.5 to 4.0 mol of water per mole of silicon atoms.

8. The composition as claimed in claim 2 , wherein

the reaction is carried out in the presence of a solvent selected from the group consisting of an alcohol formed in the hydrolysis of the compound of the formula II ethanol, methanol, n-propanol, and isopropanol.

9. The composition as claimed in claim 2 , wherein the reaction is carried out under a pressure of 1 mbar to 100 bar and at a temperature of 20 and 150° C.

10. The composition as claimed in claim 2 , wherein the process further comprises removing

volatile solvent and optionally groups which can be hydrolyzed to volatile solvent, to a level in the overall composition of below 12% by weight to 0% by weight wherein said removing can be carried out during the reaction, after the reaction, or both, thereafter by distillation.

11. The composition as claimed in claim 2 , wherein

component A is at least one member selected from the group consisting of 3-chloropropyltrimethoxysilane, 3-chloropropyltriethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropylmethyldiethoxysilane, 3-chloropropyldimethylethoxysilane, 3-chloropropyldimethylmethoxysilane, and or of a hydrolysis or condensation product of the aforementioned alkoxysilanes.

12. The composition as claimed in claim 2 , wherein

components A and B are present, in relation to the haloalkyl group of component A and to the tertiary nitrogen of component B, in a molar ratio of 2:1 to 1:100.

13. The composition as claimed in claim 2 , wherein said reacting is carried out by

a) component A together with a solvent and adding a defined amount of water, thereafter

adding component B,

removing hydrolysis alcohol at least partly from the system, and adding water in defined amounts,

or

b) introducing component A and adding a solvent, thereafter

adding a defined amount of water, therafter

adding component B,

removing hydrolysis alcohol at least partly from the system, and adding water in defined amounts,

or

c) introducing component A and adding a solvent,

adding a defined amount of water,

removing hydrolysis alcohol at least partly from the system,

thereafter adding component B, and

removing hydrolysis alcohol at least partly from the system,

adding a defined amount of water and

removing hydrolysis alcohol at least partly from the system, and adding water in defined amounts,

or

d) reacting component A with component B at elevated temperature,

adding an additional amount of component B, and

subsequently adding a defined amount of water,

forming hydrolysis alcohol at least partly from the system, and adding water in defined amounts,

or

e) introducing component A and adding a solvent,

adding a defined amount of water and

removing hydrolysis alcohol at least partly from the system,

subsequently adding component B and

adding, at elevated temperature, a defined amount of water, and

removing hydrolysis alcohol at least partly from the system, and optionally adding water in defined amounts,

or

f) introducing component A together with a solvent and adding a defined amount of water,

removing hydrolysis alcohol at least partly from the system,

adding component B, and

removing hydrolysis alcohol at least partly from the system,

and adding water in defined amounts.

14. The composition as claimed in claim 2 , wherein the composition has a viscosity of less than 1500 mPa s.

15. The composition as claimed in claim 2 , which has

a solids content in the composition of 0.1% to 99.9% by weight with all of the constituents in the composition making 100% by weight in total.

16. The composition as claimed in claim 2 , which has

a total nitrogen content of 0.1% to 15% by weight for a viscosity of 1 to 100 mPa s, and optionally for a pH in the range from 5.0 to 11.0.

17. The composition as claimed in claim 2 , wherein the composition further comprises at least one selected from the group consisting of a pigment, a filler, a binder, a crosslinker, an optical brightener, a coating auxiliary, and another auxiliary.