Poly(etherimide-siloxane)-aromatic polyketone compositions and articles made therefrom

1. An article comprising an electrical wire, wherein the electrical wire comprises a conductor wire; and a covering disposed over the conductor wire, wherein the covering is formed from a thermoplastic composition comprising,

5-75 weight percent aromatic polyketone; and

25-95 weight percent poly(etherimide-siloxane) copolymer having a siloxane content of more than 0 to less than 50 weight percent based on the total weight of the poly(etherimide-siloxane) copolymer;

wherein all weight percents are based on the total weight of the composition; and

wherein the thermoplastic composition coating the conductor wire has one or more of the following properties:

a tensile stress of greater than 30 MPa, determined according to UL-1581 after 24 hours at 23° C.;

a tensile elongation of greater than 100%, determined according to UL-1581 after 24 hours at 23° C.; and

achieves a pass rating in the single wire vertical flame propagation test conducted according to EN50265-2-1/IEC60332-1, as determined in the presence of the wire conductor,

wherein the electrical wire has:

a tensile stress of greater than 30 MPa, determined according to UL-1581 after heat aging for 168 hours at 178° C.; and

a tensile elongation of greater than 50%, determined according to UL-1581 after heat aging for 168 hours at 178° C.

2. The article of claim 1 , wherein the electrical wire achieves a pass rating in the single wire burn test conducted according to UL-1581 VW1.

3. The article of claim 1 , wherein the electrical wire has a tear strength of greater than 25 N/mm, determined according to ISO 34-1.

4. The article of claim 1 , wherein the poly(etherimide-siloxane) copolymer is a block copolymer having a siloxane content of 5 to 50 weight percent, based on the total weight of the block copolymer, and comprises repeating units of the formula

wherein

Z is a residue of bisphenol A,

R 4 is n-propylene,

E is 2 to 50,

n is 5 to 100, and

each R′ is methyl.

5. The article of claim 1 , wherein the aromatic polyketone comprises polyetherketone, polyetheretherketone, polyetherketone, polyaryletherketone, or a combination comprising at least one of the foregoing.

6. The article of claim 1 , wherein the aromatic polyketone comprises polyetheretherketone.

7. The article of claim 1 , wherein the thermoplastic composition comprises 40 to 60 weight percent of polyetheretherketone.

8. The article of claim 1 , wherein the thermoplastic composition achieves a V0 rating at a thickness of 1.0 mm and 1.6 mm according to UL94 Vx.

9. The article of claim 1 , wherein the thermoplastic composition has an ITC value of less than or equal to 15, as determined according to EN50305.

10. The article of claim 1 , further comprising one or more additives comprising a thermal stabilizer, a hydrolysis stabilizer, a nucleating agent, a metal deactivator, a flame retardant additive, or a combination comprising at least one of the foregoing.

11. The article of claim 1 , wherein the thermoplastic composition has a siloxane content of 1 to 25 percent by weight, based on the combined weight of the polymer components.

12. The article of claim 1 , wherein the conductor wire comprises copper, aluminum, lead, gold, silver, iron, nickel, chromium, and alloys comprising at least one of the foregoing.

13. The article of claim 1 , wherein the covering has a thickness of 0.1 to 1 millimeters.

14. The article of claim 1 , wherein the electrical wire further comprises an intervening layer between the conductor wire and the covering.

15. The article of claim 1 , wherein the article is a construction component, a building component, an electrical device component, a railway vehicle component, an automobile component, a marine vehicle component, an aircraft component, or a data transmission component.