USE OF NMP-FREE COATINGS FOR AUTOMOTIVE INTERIORS
The present invention relates to the use of polymer mixtures in the coating of decorative films and decorative surfaces.
1 - 11 . (canceled)
12 . Use of low-NMP, aqueous polymer mixture, characterised in that it contains at least one aqueous polyurethane dispersion based on polyurethane having a content of Zerewitinoff-active hydrogen atoms from OH groups and NH groups in the range from 0.01 to 0.25 wt. %, based on the total amount of polyurethane, and at least one mattifying agent and at least one crosslinker and/or crosslinker system in the coating of decorative surfaces and decorative films.
13 . Use according to claim 12 , characterised in that the polyurethane dispersion contains as structural components at least one monoalcohol having a mean molecular weight Mn of from 32 to 145 g/mol and/or at least one monoamine (g) having a mean molecular weight Mn of from 17 to 147 g/mol.
14 . Use according to claim 12 , characterised in that the aqueous polyurethane dispersion contains as further structural components
a) at least one polyisocyanate,
b) at least one polyol having a mean molar weight M n of from 500 to 6000 g/mol,
c) at least one polyol having a mean molar weight M n of from 62 to 500 g/mol,
d) at least one compound which contains an ionic group or a group capable of forming an ionic group, and
e) at least one polyamine having a mean molecular weight M n of from 32 to 500 g/mol.
15 . Use according to claim 14 , characterised in that the polyurethane dispersion contains component c) in amounts of from 1.5 to 23 wt. %, based on all the structural components.
16 . Use according to claim 12 , characterised in that the polyurethane dispersion has a hard segment content of from 28 to 85 wt. %.
17 . Use according to claim 14 , characterised in that the polyurethane dispersion contains component b) in amounts of from 10 to 65 wt. %, based on all the structural components.
18 . Use according to claim 12 , characterised in that the crosslinker and/or crosslinker system is based on at least one polyisocyanate and/or at least one polycarbodiimide.
19 . Use according to claim 12 , characterised in that the content of NMP is from 0.0 to 0.5 wt. %, based on the polymer mixture.
20 . Use according to claim 12 , characterised in that it is free of NMP.
21 . Decorative film obtained according to claim 12 .
22 . Use of a decorative film according to claim 21 in the form of a dashboard or of a door lining or of an interior lining part or of a seat covering material.