Flame-retardant expandable polymers
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United States of America Patent
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Apr 17, 2012
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Apr 18, 2011
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Abstract
The invention relates to flame-retardant expandable polymers and to polymer foams and to the use thereof. According to the invention, at least one of the following phosphorus compounds is used as a flame retardant: phosphorus compound according to formula (Ia): (Ia) 10-hydroxy-9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO-OH); or the salts thereof according to formula (Ib): (Ib) (DOPO-OR); or the ring-opened hydrolysates thereof according to formula (Ic): (Ic).
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