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Urethane coatings based on aldehyde oils
Author(s) -
Rheineck A. E.,
Lakshmanan P. R.
Publication year - 1969
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/bf02544365
Subject(s) - aldehyde , polyol , isocyanate , chemistry , organic chemistry , pentaerythritol , curing (chemistry) , ozonolysis , acetal , degree of unsaturation , glycerol , polymer chemistry , glyoxal , polypropylene glycol , toluene diisocyanate , polyurethane , catalysis , fire retardant , polyethylene glycol
A series of polyol acetals of aldehyde oils was prepared by an acetal interchange reaction between dimethyl and tetramethyl acetals of aldehyde oils derived by the reductive ozonolysis of linseed and soybean oils. The acetals interchanged with pentaerythritol, trimethylol propane and glycerol contained the equivalent of .93 and 1.88 aldehyde groups per oil molecule. The polyol acetals were reacted with toluene diisocyanate in an NCO/OH of 2. These products were tested as film formers. Curing was by two reactions, namely oxidation polymerization of the residual unsaturation in the oil and moisture curing of the unreacted isocyanate group. Good quality films were formed.