Stabilizer blend for improved chlorine resistance
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United States of America Patent
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Issued Date -
Nov 23, 2006
app pub date -
May 19, 2005
filing date -
May 19, 2005
priority date (Note) -
Abandoned
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Abstract
A method for increasing the stability of a thermoplastic resin in the presence of water is disclosed wherein said method comprises adding to said resin a stabilizing amount of a blend of: (A) at least one aromatic amine antioxidant; and (B) at least one sterically hindered phenol antioxidant. Such stabilized resins, which are preferably high density polyethylene, are especially useful for the fabrication of pipes for the transport of water, particularly chlorinated potable water.
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