Novel epoxy dispersions for use in coatings
AssigneeHenkel Kommanditgesellschaft auf Aktien (Henkel KGaA)
InventorsBrian D. Bammel, John D. McGee, Zhiqi Yang
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Abstract
Epoxy resins that have one or more functional groups that impart an anionic character to the epoxy resins are prepared. The resulting anionic functionalized epoxy resins may be used to produce high solids, epoxy-based dispersions that are capable of being used as a component of a coating bath which can provide to a coating that may be applied to a surface using a variety of techniques.
Claims29
A process of making an autodepositing epoxy resin dispersion, the process comprising the steps of:
- (a) mixing at least one anionic functionalized epoxy resin with at least one solvent to form a mixture, wherein the at least one anionic functionalized epoxy resin is derived from one or more epoxy resins having a molecular weight of at least about 2000 Daltons;
- and
- (b) dispersing the mixture of step (a) in water.
An autodepositing epoxy resin dispersion comprising:
- (a) water;
- and
- (b) at least one anionic functionalized epoxy resin derived from one or more epoxy resins having a molecular weight of at least about 2000 Daltons.
A process of making an autodepositing epoxy resin dispersion, the process comprising the steps of:
- (a) mixing at least one anionic functionalized epoxy resin with at least one solvent to form a mixture, wherein the at least one anionic functionalized epoxy resin is derived from one or more epoxy resins conforming to the general chemical structure:
- 10
- wherein A is
- 11
- and n is an integer from 7 to 50;
- and
- (b) dispersing the mixture of step (a) in water.
An autodepositing epoxy resin dispersion comprising:
- (a) water;
- and
- (b) at least one anionic functionalized epoxy resin in dispersed form, wherein the at least one anionic functionalized epoxy resin is derived from one or more epoxy resins conforming to the general chemical structure:
- 12
- wherein A is
- 13
- and n is an integer from 7 to 50.
A process of making an autodepositing epoxy resin dispersion, the process comprising the steps of:
- (a) mixing at least one anionic functionalized epoxy resin with at least one solvent to form, a mixture, wherein the at least one anionic functionalized epoxy resin has anionic functional groups selected from the group consisting of sulfonate, sulfate, phosphonate and phosphate;
- and
- (b) dispersing the mixture of step (a) in water.
A process of making an autodepositing epoxy resin dispersion, the process comprising the steps of:
- (a) mixing at least one anionic functionalized epoxy resin with at least one solvent to form a mixture, wherein the at least one anionic functionalized epoxy resin has anionic functional groups selected from the group consisting of sulfonate, sulfate, and phosphate and is derived from one or more epoxy resins conforming to the general chemical structure:
- 14
- wherein A is
- 15
- and n is an integer from 0 to 50;
- and
- (b) dispersing the mixture of step (a) in water.
Dependencies are inferred from the claim text.