| abstract |
The invention relates to an anticorrosive composition containing at least one first butyl rubber having an apparent Brookfield viscosity, measured at 66 ° C in accordance with DIN EN ISO 2555, from about 400,000 to about 2,000,000 mPa * s and an average molecular weight MW (also referred to as an average molar mass or molecular weight MW) of from about 20,000 to about 60,000, and at least one second butyl rubber having an average molecular weight of MW from about 150,000 to about 2,000,000 and a Mooney viscosity ML (1 + 8) at 125 ° C. of from about 25 Mooney (EM) units to approximately 65 EM when measured in accordance with ISO 289. |