Flame retardant resin compositions containing phosphoramides, and method for making
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United States of America Patent
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Apr 24, 2001
Issued Date -
N/A
app pub date -
Jul 8, 1999
filing date -
Aug 31, 1998
priority date (Note) -
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Abstract
The present invention provides resin compositions comprising a thermoplastic resin and at least one phosphoramide having a glass transition point of at least about 0.degree. C., preferably of at least about 10.degree. C., and most preferably of at least about 20.degree. C., of the formula: ##STR1## wherein Q.sup.1 is oxygen or sulfur; R.sup.1 is an amine residue, and R.sup.2 and R.sup.3 are each independently an alkyloxy, alkylthio, aryloxy, or arylthio residue, or an aryloxy or arylthio residue containing at least one alkyl substitution; or an amine residue. The present invention also relates to articles made from the resin compositions. The present invention also provides methods to make the resin compositions having improved heat properties over compositions known in the art.
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