New pentaerythryl phosphonates containing self-extinguishing thermoplastic compositions
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United States of America Patent
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Aug 16, 1994
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N/A
app pub date -
Nov 9, 1993
filing date -
Aug 7, 1991
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Expired
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Abstract
A new group of pentaerythryl diphosphonates and poly(pentaerythryl diphosphonates) are described. Flame-retardant compositions are also described, which include a thermoplastic polymer and a certain amount of self-extinguishing agent consisting of one of the above-mentioned pentaerythryl diphosphonates or poly(pentaerythryl diphosphonates).
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