Zobrazeno 1 - 10
of 35
pro vyhledávání: '"E. J. Saggese"'
Publikováno v:
Journal of the American Oil Chemists Society. 52:289-292
A series of polyols was prepared from epoxidized tallow, by reaction with trimethylolpropane in refluxing toluene, sequentially under basic and acidic catalysis. In preliminary experiments, under catalysis by sodium methoxide alone, the trimethylolpr
Publikováno v:
Journal of Cellular Plastics. 16:102-112
Publikováno v:
Journal of the American Oil Chemists' Society. 51:119-122
Polyols of higher hydroxyl content than previously obtained from tallow were prepared for use in urethane foams. Epoxidized tallow was caused to react with trimethylolpropane with catalysis by p-toluenesulfonic acid (2%). Reaction at 120 C in toluene
Autor:
T. F. Drake, J. W. Mitchell, C. F. Krewson, E. J. Saggese, J. F. Carmichael, J. S. Ard, B. C. Smale
Publikováno v:
Journal of Agricultural and Food Chemistry. 7:118-122
Publikováno v:
Journal of the American Oil Chemists' Society. 51:123-125
Polyols made by reacting trimethylolpropane with epoxidized tallow were converted to urethane foams by reaction with a polymethylene polyphenylisocyanate in the presence of fluorotrichloromethane. Adjusted with triisopropanolamine or an oxypropylated
Publikováno v:
Journal of the American Oil Chemists’ Society. 54:160-162
A convenient three-stage reaction has been devel-oped for the preparation of polyols from epoxidized tallow (ET), trimethylolpropane (TMP), and propyl-ene oxide (PO), without the previously required water washing step. ET is first heated with excess
Publikováno v:
Journal of the American Oil Chemists' Society. 44:40-42
Propylene oxide has been reacted with 9,10-dihydroxystearic acid to form polyol components for urethane foams. The alkali-catalyzed reaction proceeds slowly until the first mole of propylene oxide is absorbed and thereafter at a higher rate. For othe
Publikováno v:
Journal of Agricultural and Food Chemistry. 12:434-436
Publikováno v:
Journal of the American Oil Chemists' Society. 44:43-45
Liquid polyols consisting ofthreo-orerythro-9,10-dihydroxystearic acid previously reacted with 1, 2, 4, 6 and 8 moles of propylene oxide were adjusted with triisopropanolamine to equivalent weight 100. Using trichlorofluoromethane as blowing agent an
Publikováno v:
Journal of the American Oil Chemists Society. 48:715-717
Improved properties of fire retardant urethane foams prepared from hypobrominated lard and tallow have been obtained by purification of the polyols prior to their use. Hypobromination was carried out by epoxidation of the glycerides followed by treat