Urethane coatings based on aldehyde oils |
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Authors: | A E Rheineck P R Lakshmanan |
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Affiliation: | (1) Coatings Department, North Dakota State University, 58102 Fargo, North Dakota;(2) Present address: Gulf Research and Development Company, 66202 Merriam, Kansas |
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Abstract: | 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.
Presented at the AOCS-AACC Meeting, Washington, D.C., March, 1968. |
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