Metal-plastic hybrid component

1. A polymer composition, comprising:

a) from 50 to 99.7% by weight of at least one polymer having a molecular weight of 15,000 to 70,000 selected from the group consisting of polyamides, polyaryl ether ketones, and mixtures thereof, and

b) from 0.3 to 20% by weight of one or more additives of the formula (I):

M a M′ b D c D′ d   (I)

wherein

M=[R 3 SiO 1/2 ]

M′=[R′R 2 SiO 1/2 ]

D=[R 2 SiO 2/2 ],

D′=[R′RSiO 2/2 ]

wherein each R is independently selected from the group consisting of H, alkyl moieties having from 1 to 12 C atoms and a phenyl moiety, and each R′ is independently a moiety having a structure of formula (II), formula (III) or formula (IV),

wherein formula (II) is an alkylamino moiety

wherein x=from 1 to 20 and R″ is selected from the group consisting of H and an alkyl moiety having from 1 to 12 C atoms,

formula (III) is a (trialkoxysilyl)methylene moiety

wherein R′″ is an alkyl moiety having from 1 to 4 C atoms,

and formula (IV) is an epoxycyclohexylalkyl moiety

wherein y=from 1 to 4,

wherein the indices are

a=from 0 to 2

b=from 0 to 2

c=from 10 to 500

d=from 0 to 50

a+b=2 and

b+d≥2, and

wherein the proportions of all constituents of the composition give a total of 100% by weight.

2. The polymer composition according to claim 1 , wherein each R is independently methyl or phenyl.

3. The polymer composition according to claim 1 , wherein the ratio of the sum of the indices a+c to the sum of the indices b+d, (a+c)/(b+d), is from 2 to 50.

4. The polymer composition according to claim 1 , wherein the index c is from 15 to 100.

5. The polymer composition according to claim 1 , wherein

(i) b=2, and the index d is from 0 to 20 or

(ii) b=0, and the index d is from 2 to 20.

6. The polymer composition according to claim 1 , wherein the polymer composition comprises from 0.5 to 10% by weight of the additive of the formula (I).

7. The polymer composition according to claim 1 , wherein the polyamide is present and is selected from the group consisting of homopolyamides of an aminocarboxylic acid, homopolyamides of a diamine-dicarboxylic acid, copolyamides and mixtures thereof.

8. The polymer composition according to claim 7 , wherein the polyamide is selected from the group consisting of nylon-6, nylon-6,6, nylon-6,10, nylon-6,12, nylon-10,10, nylon-12 and mixtures thereof.

9. A hybrid component, comprising:

a metal, and

the polymer composition according to claim 1 .

10. The hybrid component according to claim 9 , further comprising:

at least one additional adhesion promoter polymer composition layer located between the metal and the polymer composition.

11. A foil, comprising:

the polymer composition according to claim 1 ,

wherein the average thickness of the foil is from 10 μm to 600 μm.

12. The foil according to claim 11 , further comprising:

at least one increased concentration zone

wherein the increased concentration zone comprises at least one region at a surface of the foil which has an increased concentration of the additive of the formula (I) relative to the bulk concentration of the additive of the formula (I).

13. A semifinished plastics product, comprising:

at least one polymer as a plastics material selected from the group consisting of polyamides, polyaryl ether ketones, and mixtures thereof,

wherein at least one part of a surface of the plastics material comprises a coating, the coating comprising at least one polymer composition according to claim 1 .

14. A process for the production of a semifinished plastics product, the process comprising:

applying at least one layer of the polymer composition according to claim 1 to a plastics material selected from the group consisting of polyamides, polyaryl ketones,

and mixtures thereof thereby coating at least one part of a surface of the plastics material with a coating comprising at least one polymer composition according to claim 1 .

15. A hybrid component, comprising:

a metal, and the semifinished plastics product according to claim 13 .

16. The polymer composition according to claim 1 , wherein the index c is from 20 to 50.

17. The polymer composition according to claim 1 , wherein

(i) b=2, and the index d is from 1 to 10, or

(ii) b=0, and the index d is from 2 to 20.

18. The polymer composition according to claim 1 , wherein

(iii) b=2, and the index d is from 0 to 20, or

(iv) b=0, and the index d is from 3 to 10.

19. The polymer composition according to claim 1 , wherein

(v) b=2, and the index d is from 1 to 10, or

(vi) b=0, and the index d is from 3 to 10.

20. The hybrid component according to claim 15 , which has an adhesion as measured in the tensile test 24 hours after production of 48-185 MPa.

21. The polymer composition according to claim 1 , wherein said polymer is a polyamide.

22. The polymer composition according to claim 21 , wherein said polyamide is a copolyamide.