C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/66 (2006.01) C08G 18/10 (2006.01) C08G 18/32 (2006.01) C08G 18/48 (2006.01) C08G 18/72 (2006.01) C08G 18/76 (2006.01) C08G 65/28 (2006.01) C08L 71/02 (2006.01)
Patent
CA 2178134
Polyurethane elastomers exhibiting improved green strength while maintaining short demold times are prepared from ultra-low unsaturation polyoxypropylene polyols containing up to 20 weight percent internal random oxyethylene moieties. The elastomers adsorb less than 10 weight percent water at 0°C. The internal polyoxyethylene moiety-containing polyoxypropylene polyols may be used to prepare ultra-low unsaturation polyoxyethylene capped polyols which are haze-free and which may be used to prepare haze-free 4,4'-MDI prepoly-mers. Multidisperse blends of monodisperse internal oxyethylene moiety-containing polyoxypropylene polyols of ultra-low unsaturation provide yet further improve-ments in elastomer processing.
Allen Gary L.
Barksby Nigel
Isaacs Bruce H.
Langsdorf Leah J.
Seneker Stephen D.
Arco Chemical Technology L.p.
Bayer Antwerp N.v.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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