PHOSPHORUS-CONTAINING FLAME RETARDANT MIXTURES, A PROCESS FOR PRODUCTION OF SAID MIXTURES AND USE OF SAID MIXTURES, AND ALSO EPOXY RESIN FORMULATIONS WHICH COMPRISE SAID FLAME RETARDANT MIXTURES
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United States of America Patent
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Aug 31, 2023
app pub date -
Jun 11, 2021
filing date -
Jun 17, 2020
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Abstract
Phosphorus-containing flame retardant mixtures, a process for production of said mixtures and use of said mixtures, and also epoxy resin formulations which comprise said flame retardant mixtures. The present invention relates to phosphorus-containing flame retardant mixtures, comprising individual flame retardants having in each case one or more functional groups of the formulae (I), (II) and (III), where, based on the total quantity of functional groups in the flame retardant mixture, 1 to 98 mol % of functional groups of the formula (I), 1 to 35 mol % of functional groups of the formula (II) and 1 to 98 mol % of functional groups of the formula (III) are present, and where R1 and R2 are identical or different and are mutually independently hydrogen, C1- to C12-alkyl, linear or branched, and/or C6- to C18-aryl and the entirety of (I), (II) and (III) is always 100 mol %.
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