Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1997-05-27
1998-12-15
Sergent, Rabon
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
25218222, 528 59, 528 76, 528 77, 560 25, 560115, 560158, 560330, 560355, 560358, C07C27108, C08G 1810, C08G 1812
Patent
active
058499440
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.
REFERENCES:
patent: 4239879 (1980-12-01), Fabris et al.
patent: 5096993 (1992-03-01), Smith et al.
patent: 5100922 (1992-03-01), Wada et al.
patent: 5100997 (1992-03-01), Reisch et al.
patent: 5106874 (1992-04-01), Porter et al.
patent: 5116931 (1992-05-01), Reisch et al.
patent: 5124425 (1992-06-01), Higuchi et al.
patent: 5158922 (1992-10-01), Hinney et al.
patent: 5185420 (1993-02-01), Smith et al.
patent: 5300535 (1994-04-01), Takeyasu et al.
patent: 5340902 (1994-08-01), Smith et al.
patent: 5470813 (1995-11-01), Le-Khac
patent: 5482908 (1996-01-01), Le-Khac
patent: 5496496 (1996-03-01), Kajita et al.
patent: 5545601 (1996-08-01), Le-Khac
patent: 5576382 (1996-11-01), Seneker et al.
patent: 5648447 (1997-07-01), Seneker et al.
patent: 5670601 (1997-09-01), Allen et al.
patent: 5677413 (1997-10-01), Barksby et al.
patent: 5691441 (1997-11-01), Seneker et al.
patent: 5696221 (1997-12-01), Barksby et al.
J. W. Reisch et al., "Polyurethane Sealants and Cast Elastomers with Superior Physical Properties", 33.sup.rd Annual Polyurethane Marketing Conference Sep. 30,-Oct. 3, 1990, pp. 368-374.
C.P. Smith et al., "Thermoplastic Polyurethane Elastomers Made From High Molecular Weight Poly-L.TM. Polyols", Polyurethane World Congress 1991, Sep. 24-26, 1991, pp. 313-318.
Allen Gary L.
Barksby Nigel
Seneker Stephen D.
Younes Usama E.
Arco Chemical Technology L.P.
Kozak Dennis M.
Sergent Rabon
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