Flame retardants
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United States of America Patent
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Jul 28, 1981
Issued Date -
N/A
app pub date -
Jun 23, 1980
filing date -
May 24, 1978
priority date (Note) -
Expired
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Abstract
Phosphorus-containing condensation products are obtained by effecting condensation between an organophosphorus compound of the Formula, ##STR1## wherein X, Y and Z each is hydrogen or halogen, R.sub.1 and R.sub.2 each is hydrogen or methyl and R.sub.3 is hydrogen or an alkyl group and polyhydric alcohols having at least three alcoholic hydroxyl groups. These condensation products are ueful as a flame retardant for various synthetic resins.
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