Cable with environmental stress cracking resistance

Method for improving environmental stress cracking resistance of a cable including at least one core comprising at least one transmissive element and at least one polymeric coating layer, wherein the method comprises applying, around said at least one transmissive element, a radially outermost polymeric sheathing layer made of a polymeric coating material comprising:

• polyethylene present in the polymeric coating material in an amount of from 80% by weight to 99% by weight with respect to the total weight of the polymeric coating material;
• at least one non-ionic surfactant having the general formula (I):
• wherein:
• Q is a p-functional group;
• wherein R, R1, n, x, y, z and p are independently selected for each variable as follows:
• R1 is a hydrogen atom or a linear or branched C1-C6 alkyl group;
• R is a linear or branched C1-C4 alkyl group;
• n is an integer from 2 to 5 inclusive;
• x is an integer from 5 to 500 inclusive;
• y is an integer from 0 to 500 inclusive;
• z is an integer from 0 to 500 inclusive;
• y+z is not lower than 2;
• p is an integer from 1 to 4 inclusive.

Cable including at least one core comprising at least one transmissive element and at least one polymeric coating layer made of a polymeric coating material, wherein said polymeric coating material comprises:

• polyethylene present in the polymeric coating material in an amount of from 80% by weight to 99% by weight with respect to the total weight of the polymeric coating material;
• at least one non-ionic surfactant having the following general formula (Ic):
• wherein A is propylene and B is ethylene, q independently in each instance is an integer from 1 to 30 inclusive and q′ independently in each instance is an integer from 1 to 150 inclusive;
• and
• wherein said at least one polymeric coating layer is a radially outermost polymeric sheathing layer of the at least one core.

Optical cable including at least one core comprising a plurality of tubes made of a polymeric material, the tubes housing at least one optical fibre and being surrounded by a radially outermost polymeric sheath layer made of a polymeric material having one or more layers made of a polymeric coating material comprising:

• polyethylene present in the polymeric coating material in an amount of from 80% by weight to 99% by weight with respect to the total weight of the polymeric coating material;
• at least one non-ionic surfactant having the following general formula (I):
• wherein:
• Q is a p-functional group;
• wherein R, R1, n, x, y, z and p are independently selected for each variable as follows:
• R1 is a hydrogen atom or a linear or branched C1-C6 alkyl group;
• R is a linear or branched C1-C4 alkyl group;
• n is an integer from 2 to 5 inclusive;
• x is an integer from 5 to 500 inclusive;
• y is an integer from 0 to 500 inclusive;
• z is an integer from 0 to 500 inclusive;
• y+z is not lower than 2;
• p is an integer from 1 to 4 inclusive.

Optical cable including a central grooved core housing at least one optical fibre, the grooved core being surrounded by a plurality of layers at least one of which is made of a polymeric material comprising:

• polyethylene present in the polymeric coating material in an amount of from 80% by weight to 99% by weight with respect to the total weight of the polymeric coating material;
• at least one non-ionic surfactant having the following general formula (I):
• wherein:
• Q is a p-functional group;
• wherein R, R1, n, x, y, z and p are independently selected for each variable as follows:
• R1 is a hydrogen atom or a linear or branched C1-C6 alkyl group;
• R is a linear or branched C1-C4 alkyl group;
• n is an integer from 2 to 5 inclusive;
• x is an integer from 5 to 500 inclusive;
• y is an integer from 0 to 500 inclusive;
• z is an integer from 0 to 500 inclusive;
• y+z is not lower than 2;
• p is an integer from 1 to 4 inclusive.