Abstract: The present invention comprises a process for improving the corrosion inhibiting properties of lecithin by heating a lecithin oil composition for a period of time sufficient to produce darkening of the lecithin. An optional step further improves the corrosion inhibiting properties of the composition by combining zinc oxide with the lecithin oil prior to heating.

Abstract: A process which includes subjecting a composition of (a) solid or fluid, oil-carrying or oil-free lecithin materials and (b) metal oxides to mechanical treatment or mechanical impact, without the requirement of heat application to such composition. The reaction products of component (a) and component (b) have unique properties.

Abstract: A process of chemically modifying metal oxides, that is oxides of metals such as iron, lead, molybdenum, titanium, zinc and other metals, by treating them under heating at a temperature between 100.degree. and 160.degree. C. for a time period between 10 minutes and one hour or more with a lecithin material, in fluid form (including molten form). The lecithin material is a vegetable lecithin, an animal lecithin or the acetone-soluble fraction of either type of lecithin. Such metal oxide groupings enter the lecithin-fluid fraction. Whereafter a modified metal oxide, partially in a suspended form, is developed partially dissolved in the fluid lecithin (where such product can be utilized as a modified form of the fluid lecithin fraction). Such solid modified metal oxide thereafter can be sedimented from the modified oily fraction. Such modified metal oxides, instead of their initial form, can be used in such form.

Abstract: Coating compositions, such as, paints with mixed pigmentation containing pigment with widely different specific gravities, have the tendency to show in the pigment sedimentation a separation of the pigment components. Such separated components do not redisperse readily with the coating composition vehicle, upon shaking or mixing, to fully restore the initial color shades. The three factors of flotation, flocculation, and sedimentation cause the separation of the coating composition components. Plant phosphatides, which are referred to as lecithins, (and modified plant phosphatides) can be used as the only additive resulting in a joint sedimentation of the entire pigment mixture without separation of the pigment components from each other. As a result, on shaking or mixing, the entire pigmentation reenters the coating composition jointly, and the initial color shade of the coating composition is restored.

Abstract: Coating compositions, such as, paints with mixed pigmentation containing pigment with widely different specific gravities, have the tendency to show in the pigment sedimentation a separation of the pigment components. Such separated components do not redisperse readily with the coating composition vehicle, upon shaking or mixing, to fully restore the initial color shades. The three factors of flotation, flocculation, and sedimentation cause the separation of the coating composition components. Plant phosphatides, which are referred to as lecithins, (and modified plant phosphatides) can be used as the only additive resulting in a joint sedimentation of the entire pigment mixture without separation of the pigment components from each other. As a result, on shaking or mixing, the entire pigmentation reenters the coating composition jointly, and the initial color shade of the coating composition is restored. The lecithin or modified lecithin is used in an amount between 3.