Zur Kenntnis der Oxydations- und Trockenvorgänge bei Leinölprodukten

DRYING OILS AND RESINS Polymeric Functionality with Relation to the Addition Polymerization of Drying Oils

“…Application to Isolated Fractions Elod and Mach (7) recently reported on the chemistry of the heat thickening and of the oxidation processes of linseed oil in which the evidence was considered by them to favor the colloid association mechanism of gelation. In this work linseed oil was heat-thickened both when exposed to air and when processed in vacuo.…”

“…Addition polymerization of linseed oil as a hexafunctional system (curve 6), with an equal loss of unsaturation by intramolecular addition (curve 6-1) and with complete intramolecular addition . These are employed with reference to the values observed by Elod and Mach (7), on isolated fractions of linseed stand oils. Observed for the 287.8°C.…”

DRYING OILS AND RESINS Constitution of a Drying Oil Gel1

“…The alpha acetoxy derivatives of these lactic esters were prepared by reacting them n-ith the acetic anhydride or with ketene in accordance with the methods described by Claborn and Smith (6). Table I gives several of the physical characteristics of these esters.…”

“…K THE fourth article of this series (1) reference was made to the work of Elod and Mach (6) and to the probability that, upon closer examination of the isolated fractions from solvent-extracted stand oils and their gels, one would find definite evidence relating the several phases not only to the degree of polymerization but to the extent and nature of the intramolecular reactions as well.…”

“…The sample supplied was cut from a piece not more than 6 inches from the partly charred portion, so is therefore believed to represent a completely polymerized oil. I n the morning there was found, as might be expected, an entirely Polymerized mass in the kettle, which was still very hot.…”