There was experimentally noticed [1

There was experimentally noticed [13] that the “alarming value” of the ultimate tensile strength is of 60% from the initial value.
This value is given a degree of polymerization of 43,558% to which it corresponds a volume of gases (CO+CO2) of 1,112438 ml/g paper.
A tensile strength of 40% from the initial value represents the limit inferior value for this degradation criterion.
This value of tensile strength is given a degree of polymerization of 47,281% to which it corresponds at a volume of gases (CO+CO2) of 2,085ml/paper gram.
For the electro-insulating paper with the dimensions: width of 10 mm, thickness of 0,08 mm, there were measured, at various temperatures, the volumes of gases (CO+CO2) dissolved in oil, in millilitres, for an hour.
The results obtained are shown in table 1.