Aqueous dispersions and their use for the production of sheet-like substrates

Patent metadata

Field	Value
Publication number	US-9234071-B2
Application number	US-53224908-A
Country	US
Kind code	B2
Filing date	Mar 14, 2008
Priority date	Mar 21, 2007
Publication date	Jan 12, 2016
Grant date	Jan 12, 2016

Abstract

Aqueous dispersions comprising
(A) at least one polyurethane, (B) at least one compound of the general formula I a or I b

in which R 1 , R 2 and R 3 may be identical or different and are selected from A 1 -NCO and A 1 -NH—CO—X, in which
A 1 is a spacer having 2 to 20 carbon atoms and
X is selected from O(AO) x R 4 ,
AO is C 2 -C 4 -alkylene oxide,
x is an integer in the range from 1 to 50 and
R 4 is selected from hydrogen and C 1 -C 30 -alkyl,
(C) and at least one silicone compound having reactive groups.

First claim

We claim:

1. An aqueous dispersion comprising
(A) at least one polyurethane,
(B) at least one compound of the general formula I a or I b

in which R 1 , R 2 and R 3 may be identical or different and are selected from A 1 -NCO and A 1 -NH—CO—X, in which
A 1 is a spacer having 2 to 20 carbon atoms and
X is selected O(AO) x R 4 ,
AO is C 2 -C 4 -alkylene oxide,
x is an integer in the range from 1 to 50 and
R 4 is selected from hydrogen and C 1 -C 30 -alkyl,
(C) and at least one silicone compound having reactive groups,
said silicone compound (C) is selected from silicone compounds having one to four amino groups per molecule, silicone compounds having one to four aminoalkylamino groups per molecule and silicone compounds having one to four COOH groups per molecule.

2. The aqueous dispersion according to claim 1 , wherein AO is selected from ethylene oxide and propylene oxide.

3. The aqueous dispersion according to claim 1 , which additionally comprises
(D) at least one polydi-C 1 -C 4 -alkylsiloxane which has neither amino groups nor COOH groups.

4. The aqueous dispersion according to claim 1 , wherein A 1 is selected from phenylene, toluylene and C 2 -C 12 -alkylene.

5. A process for preparing aqueous dispersions according to claim 1 comprising combining the at least one polyurethane (A), the at least one compound (B), and the at least one silicone compound (C).

6. A process for the production of multilayer sheet-like substrates comprising utilizing aqueous dispersions according to claim 1 .

7. The process according to claim 6 , wherein a sheet-like body is produced from a silicone in a first step and is provided with a structure in a second step, aqueous dispersion comprising
(A) at least one polyurethane,
(B) at least one compound of the general formula I a or I b

in which R 1 , R 2 and R 3 may be identical or different and are selected from A 1 -NCO and A 1 -NH—CO—X, in which
A 1 is a spacer having 2 to 20 carbon atoms and
X is selected O(AO) x R 4 ,
AO is C 2 -C 4 -alkylene oxide, x is an integer in the range from 1 to 50 and R 4 is selected from hydrogen and C 1 -C 30 -alkyl, and at least one silicone compound having reactive groups, said silicone compound (C) is selected from silicone compounds having one to four amino groups per molecule, silicone compounds having one to four aminoalkylamino groups per molecule and silicone compounds having one to four COOH groups per molecule, is applied to the structured body in the third step and the layer from the abovementioned steps is transferred onto a sheet-like substrate in a fourth step.

8. A multilayer sheet-like substrate produced by the process according to claim 6 .

9. The multilayer sheet-like substrate according to claim 8 , wherein the sheet-like substrate is selected from plastic films, leather, imitation leather, textile and moldings comprising plastic.

10. An interior automobile part, shoe, textile or piece of furniture produced using multilayer sheet-like substrates according to claim 8 .

11. The aqueous dispersion according to claim 2 , which additionally comprises
(D) at least one polydi-C 1 -C 4 -alkylsiloxane which has neither amino groups nor COOH groups.

12. The aqueous dispersion according to claim 2 , wherein A 1 is selected from phenylene, toluylene and C 2 -C 12 -alkylene.

13. The aqueous dispersion according to claim 3 , wherein A 1 is selected from phenylene, toluylene and C 2 -C 12 -alkylene.

14. A process for preparing aqueous dispersions according to claim 2 comprising combining the at least one polyurethane (A), the at least one compound (B), and the at least one silicone compound (C).

15. A process for the production of multilayer sheet-like substrates comprising utilizing aqueous dispersions according to claim 2 .

16. A process for the production of multilayer sheet-like substrates comprising utilizing aqueous dispersions according to claim 3 .

17. A process for the production of multilayer sheet-like substrates comprising utilizing aqueous dispersions according to claim 4 .

Assignees

• Bustos Nidia
• Weiser Jürgen
• Basf Se

Inventors

• Bustos Nidia
• Weiser Jürgen

Classifications

• C08G18/722

  Combination of two or more aliphatic and/or cycloaliphatic polyisocyanates · CPC title

• C08L2666/20

  Macromolecular compounds having nitrogen in the main chain according to C08L75/00 - C08L79/00; Derivatives thereof · CPC title

• C08G18/4216

  from mixtures or combinations of aromatic dicarboxylic acids and aliphatic dicarboxylic acids and dialcohols · CPC title

• C08G18/283

  Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds · CPC title

• C08G18/6692

  with compounds of group C08G18/34 · CPC title