Strippable insulation shield for cables

1. A wire or cable comprising an insulation layer in contact with a semiconductive insulation shield layer, the semiconductive shield layer comprising a composition comprising in weight percent (wt %) based on the weight of the composition:

(A) 20 to 80% of an interpolymer of an olefin and an α,β-unsaturated carbonyl comonomer, wherein the interpolymer comprises units derived from ethylene and 10-50 wt % of vinyl acetate,

(B) 1 to 90% chlorinated polyolefin, wherein the chlorinated polyolefin is a chlorinated polyethylene homopolymer,

(C) 20 to 45% carbon black,

(D) 0.1 to 5% antioxidant,

(E) 0.01 to 5% acid scavenger stabilizer;

(F) Optionally free radical initiator,

(G) Optionally silane functionality,

(H) Optionally a sulfur-containing curative, and

(I) Optionally a radiation-cure catalyst,

having a strip force between the insulation layer and the semiconductive insulation shield layer of greater than (>) 3 pounds (1.4 kg) per half inch (1.3 cm) at 23° C. and the wire or cable less than (<) 24 pounds (10.9 kg) per half inch (1.3 cm) at 23° C.

2. The wire or cable of claim 1 in which the chlorinated polyolefin is chlorinated polyethylene homopolymer having a melt index (I 10 at 190° C.) of 0.6 dg/minute with a non-chlorinated polyethylene base having a weight average molecular weight of 2,000 to 1,000,000 Daltons and comprising between 20 and 80 weight percent chlorine.

3. The wire or cable of claim 1 in which the carbon black is conductive furnace black.

4. The wire or cable of claim 2 in which the free radical initiator is present and it is an organic peroxide.

5. The wire or cable of claim 2 in which the silane functionality is present and it is copolymerized with and olefin or grafted to an olefin polymer.

6. The wire or cable of claim 2 in which the sulfur-containing curative is present and is a blend of esters of 2,5-dimercapto-1,3,4-thiadiazole.

7. The wire or cable of claim 2 further comprising a radiation curing agent.