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Urethane foams from animal fats. IV. Rigid foams from epoxidized glycerides
Author(s) -
Scholnick F.,
Saggese E. J.,
Wrigley A. N.,
Ault W. C.,
Monroe H. A.,
Zubillaga M.
Publication year - 1968
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02890710
Subject(s) - prepolymer , isocyanate , epoxidized soybean oil , materials science , polyol , soybean oil , polyurethane , glyceride , composite material , polymer chemistry , chemical engineering , organic chemistry , chemistry , raw material , fatty acid , food science , engineering
Liquid polyols have been prepared from epoxidized glyceryl trioleate, glyceryl monooleate, lard oil, neatsfoot oil, and soybean oil by hydration with 24% fluoboric acid. Upon adjustment of the equivalent weight to 100 with triisopropanolamine, the polyols were foamed by reaction with a prepolymer made from oxypropylated sorbitol and tolylene diisocyanate. The resulting rigid foams had densities between 1.66 and 2.34 lbs/ft 3 and compressive strengths ranging from 23 to 39 psi (10% compression). The same polyols were used in one‐step systems with PAPI as the isocyanate. In general, foam properties were comparable with those obtained from the prepolymer systems.