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Molecular weight distribution in alkyd resins. Part II. Castor oil and hydrogenated castor oil alkyds
Author(s) -
Solomon D. H.,
Hopwood J. J.
Publication year - 1966
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1966.070100704
Subject(s) - alkyd , castor oil , molar mass distribution , solvent , organic chemistry , materials science , chemistry , polymer chemistry , chemical engineering , polymer science , polymer , coating , engineering
Alkyds prepared from castor and hydrogenated castor oils have been prepared direct from the oil and by first subjecting the oil to a glycerolysis reaction. The molecular weight distributions of the alkyds have been measured in solvent systems designed to separate predominantly on polarity and molecular weight. The properties of the alkyds in stoving enamels have been evaluated. The results are discussed in relation to existing theories relating processing conditions to molecular weight distribution in alkyd resins. Previous suggestions regarding the reactivity of the hydroxyl groups in the oil molecules are not consistent with the results obtained in this study.