FLAME-RETARDANT, REDUCED-WEIGHT ELASTIC FLEXIBLE POLYURETHANE FOAM
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United States of America Patent
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Issued Date -
Mar 10, 2011
app pub date -
Mar 31, 2009
filing date -
Apr 1, 2008
priority date (Note) -
Abandoned
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Abstract
A flame-retardant elastic polyurethane-soft-foam produced from a foam reaction mixture, comprising a polyol mixture, a polyisocyanate, an expandable graphite as a flame retardant, and additives. In order to reduce density while retaining long-term service properties, the polyol mixture comprises, in terms of parts by weight, from 50% to 90% of EO-based polyol, and from 50 to 10 parts by weight of standard polyol and/or filler polyol.
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