Epoxy compositions and methods of use
AssigneeEnnis-Flint, Inc.
InventorsTao Zhang, Gerald Vandezande, Phillip H. Madison, IV
Life of this patent
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Abstract
This disclosure relates to epoxy compositions and more particularly to two-part epoxy compositions that are useful for marking substrates, such as roadway and airport runway surfaces. The compositions and methods described herein can reduce build-up on applicator pump seals. Such build-up can lead to pump failure. In some cases, the compositions can reduce down-time due to pump failure. However, the compositions retain the necessary properties for substrate marking, such as curing within a short period of time.
Claims20
A two part epoxy composition suitable for coating a substrate, comprising:
- a first part comprising an epoxide, wherein the epoxide comprises a diglycidyl ether or a polyglycidyl ether;
- a second part comprising an amine;
- a latent cure catalyst comprising at least one toluene sulfonate ester, wherein the latent cure catalyst is present in the composition in an amount from 1 weight percent to 20 weight percent based on the total weight of the composition;
- and
- a dry time accelerator comprising a multifunctional (meth)acrylate, wherein the multifunctional (meth)acrylate is present in the first part and the multifunctional (meth)acrylate is present in the composition in an amount less than or equal to 8 weight percent based on the total weight of the composition,
- wherein the composition does not include a cycloaliphatic amine and is devoid of a polyol, and wherein the composition comprises a plurality of beads.
A first part of a two part epoxy composition, comprising:
- an epoxide comprising a diglycidyl ether or a polyglydicyl ether;
- a dry time accelerator comprising a multifunctional (meth)acrylate, the multifunctional (meth)acrylate being present in an amount less than or equal to 4 weight percent based on the total weight of the first part of a two part epoxy composition;
- and
- a latent cure catalyst comprising at least one toluene sulfonate ester, the at least one toluene sulfonate ester being present in an amount less than or equal to 4 weight percent based on the total weight of the first part of a two part epoxy composition,
- wherein the two part epoxy composition does not include a cycloaliphatic amine,
- wherein the two part epoxy composition is devoid of a polyol, and wherein the composition comprises a plurality of beads.
Dependencies are inferred from the claim text.