Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1991-07-17
1992-10-20
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521108, C08G 1814
Patent
active
051570564
ABSTRACT:
A novel high resiliency (HR) polyurethane resin foam composition is provided which contains phosphorus compounds to improve the static fatigue properties thereof. An unusual benefit of using certain phosphorus compounds in HR foams is that improved compression set characteristics are obtained. As might be expected, flammability properties are also improved. Some preferred phosphorus additives include, but are not limited to phosphates, phosphonates, phosphites and phosphine oxides such as tri(.beta.-chloroethyl)phosphate; tri(.beta.-chloropropyl)phosphate; dichloroethyl methylphosphate; tetrakis(2-chloroethyl) ethylene diphosphate; dimethyl methylphosphonate; diphenyl methylphosphate; triethylphosphate; tricrysylphosphate (TCP); triphenylphosphite; triethylphosphite; triethylphosphine oxide; triphenylphosphine oxide; and mixtures thereof.
REFERENCES:
patent: 3171819 (1965-03-01), Powanda
patent: 4144387 (1979-03-01), Anderson et al.
patent: 4652485 (1987-03-01), Fesman
"Stauffer Organic Flame Retardants", Stauffer Chemical Co., May, 1980.
Arco Chemical Technology L.P.
Mossman David L.
Welsh Maurice J.
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