Stabilizing mixtures for organic polymers
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United States of America Patent
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Issued Date -
Oct 9, 2003
app pub date -
Feb 4, 2003
filing date -
Mar 24, 2000
priority date (Note) -
Abandoned
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Abstract
Stablizing mixtures for organic polymers comprising: (a) at least one compound belonging to the group of 3-pyrazolidinones; (b) at least one compound belonging to the group of organic phosphites or phosphonites; (c) at least one compound belonging to the group of sterically hindered phenols; and, optionally, (d) at least one compound belonging to the group of sterically hindered amines. The above mixtures can be used as stabilizers of organic polymers to degradation caused by oxygen, heat and/or light.
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