Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1998-08-31
1999-10-12
Sergent, Rabon
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
25218224, 25218225, 25218227, 568616, 568619, 568623, 568624, C07C 4310, C07C 4304, C07C 4302
Patent
active
059657782
ABSTRACT:
Elastomers exhibiting decreased demold times and improved green strength are prepared by reacting a di- or polyisocyanate with a monodisperse polyoxypropylene diol having ultra-low unsaturation, and preferably prepared by the double metal cyanide.t-butyl alcohol catalyzed polymerization of propylene oxide. Further improved demold times and elevated elastomer physical properties are made possible by the use of multidisperse polyoxyalkylene polyether polyol blends having an overall unsaturation of less than 0.010 meq/g and a polydispersity of about 1.4 or greater.
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Allen Gary L.
Barksby Nigel
Seneker Stephen D.
Younes Usama E.
Arco Chemical Technology L.P.
Schuchardt Jonathan L.
Sergent Rabon
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