Coupled alcohol ethoxylates for improved thermal properties
AssigneeBaker Hughes Incorporated
InventorsRichard J. Nadolsky, Thomas Joseph Clark, David D. Truong
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Abstract
Coupled alcohol ethoxylates made by reacting alcohol ethoxylates with a diisocyanate have been found to improve the thermal properties of toner compositions and powder coatings. The alcohol ethoxylates have saturated linear alcohol portions of from about 20-70 carbon atom chain lengths. The diisocyanates may be aromatic diisocyanates such as toluene diisocyanate (TDI) and/or methylenediphenyl diisocyanate (MDI). Preferably, about one mole of diisocyanate is reacted with about two moles of the alcohol ethoxylates to form the coupled alcohol ethoxylates that are useful compatibilizers to improve the homogeneity of toner compositions and powder coating compositions.
Claims19
A toner composition comprising:
- resin particles;
- pigment particles;
- wax particles;
- and
- an amount of a compatibilizing component effective to improve the homogeneity of the composition, where the compatibilizing component is a coupled alcohol ethoxylate, where the coupled alcohol ethoxylate has a decrease in hygroscopic nature and an increase in thermal properties compared with a corresponding non-coupled alcohol ethoxylate.
A powder coating comprising:
- resin particles;
- pigment particles;
- wax particles;
- extender particles;
- and
- an amount of a compatibilizing component effective to improve the homogeneity of the composition, where the compatibilizing component is a coupled alcohol ethoxylate, where the coupled alcohol ethoxylate has a decrease in hygroscopic nature and an increase in thermal properties compared with a corresponding non-coupled alcohol ethoxylate.
Dependencies are inferred from the claim text.