DUAL WALL INSULATION AND JACKETING

摘要

A conductor is coated with: (a) a first polymeric layer surrounding the conductor and comprising a stabilized composition comprising a poly(alkylene terephthalate) and a polylactone; and (b) a second polymeric layer surrounding the first polymeric layer and comprising a composition comprising: (i) a polyester in which at least 70 mole % of the repeating units are tetramethylene terephthalate units and which has a solubility parameter S; (ii) 10 to 100 % by weight, based on the weight of the polyester (i), of a second polymer which (a) has a flex modulus of 500 to 100,000 psi, and (b) has solubility parameter of (S+1.5) to (S-1.5).