Polyolefin composition for pipes and fittings with increased resistance to chlorine dioxide
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United States of America Patent
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Jan 23, 2018
Grant Date -
Jun 12, 2014
app pub date -
Jul 24, 2012
filing date -
Jul 25, 2011
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Abstract
The present invention relates to a polyolefin composition with increased resistance to degradation caused by ClO2-containing water and to a pipe or a fitting made of such a polyolefin composition. The polyolefin composition comprises a polyolefin base resin (A), an antioxidant (B) having a chroman-6-ol structure, and an antioxidant (C) having a phenolic structure and the molecule comprises at least one ester group. The present invention further relates to the use of the polyolefin composition for the production of a pipe or a fitting and to the use of the polyolefin composition for increasing the lifetime of a pipe or a fitting providing the polyolefin composition with resistance against degradation caused by contact with ClO2-containing water.
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