Epoxy grout systems for standard and chemically resistant installations
View Patent ↗An epoxy grout system comprises a first epoxy resin component comprising a novolac epoxy resin, a bisphenol F epoxy resin, and a non-reactive diluent, and a second epoxy curing agent component comprising an amidoamine. The epoxy grout system has excellent chemical resistance while maintaining good installation properties. Another epoxy grout system comprises a first epoxy resin component which is resistant to a mixture of oleic acid and water, a second epoxy resin component which is less resistant to a mixture of oleic acid and water than the first component, and a third amine-containing curing agent component operable to cure both the first and second epoxy resin components. Optionally, the curing agent component can be provided as a plurality of amine-containing curing agent components of respective colors, whereby a user can select a curing agent component of a desired color for use with either the first or second epoxy resin component.
1. An epoxy grout system, comprising (a) a first epoxy resin component comprising about 1-10 wt % of a novolac epoxy resin, and about 10-30 wt % of a bisphenol F epoxy resin, both based on the weight of the first epoxy resin component, and a non-reactive diluent, and (b) a second epoxy curing agent component comprising an amidoamine.
2. The epoxy grout system of claim 1 , wherein the novolac epoxy resin has epoxy functionality in a range of from about 2 to 6.
3. The epoxy grout system of claim 1 , wherein the novolac epoxy resin has epoxy functionality in a range of from about 3 to 5.
4. The epoxy grout system of claim 1 , wherein the novolac epoxy resin has epoxy functionality in a range of from about 3 to 4.
5. The epoxy grout system of claim 1 , wherein the first epoxy resin component comprises the bisphenol F epoxy resin in an amount of about 15-20 wt %, based on the weight of the first epoxy resin component.
6. The epoxy grout system of claim 1 , wherein the first epoxy resin component comprises the novolac epoxy resin in an amount of about 1-5 wt %, based on the weight of the first epoxy resin component.
7. The epoxy grout system of claim 1 , wherein the first epoxy resin component comprises the novolac epoxy resin in an amount of about 1-3 wt %, based on the weight of the first epoxy resin component.
8. The epoxy grout system of claim 1 , wherein the non-reactive diluent is benzyl alcohol.
9. The epoxy grout system of claim 1 , further comprising sand and/or recycled glass.
10. The epoxy grout system of claim 1 , wherein the grout is chemically resistant to a mixture of oleic acid and water.
11. The epoxy grout system of claim 1 , wherein pigment is included in the second epoxy curing agent component.
12. The epoxy grout system of claim 1 , wherein the first epoxy resin component includes an adhesion promoter.
13. An epoxy grout system, comprising a first epoxy resin component which is chemically resistant to a mixture of oleic acid and water, a second epoxy resin component which is less chemically resistant to a mixture of oleic acid and water than the first epoxy resin component, and a third amine-containing curing agent that is operable to cure both the first epoxy resin component and the second epoxy resin component, wherein the first epoxy resin component comprises from about 1-10 wt % of a novolac epoxy resin, from about 10-30 wt % of a bisphenol F epoxy resin, and a non-reactive diluent, and wherein the second epoxy resin component comprises a bisphenol A epoxy resin, a bisphenol F epoxy resin, or a bisphenol A epoxy resin and a bisphenol F epoxy resin.
14. The epoxy grout system of claim 13 in which the amine-containing curing agent is operable to cure both the first epoxy resin component and the second epoxy resin component at the same mixing proportion.
15. The epoxy grout system of claim 13 wherein the amine-containing curing agent contains an amidoamine.
16. The epoxy grout system of claim 13 wherein the second resin component is free of novolac epoxy resin.
17. The epoxy grout system of claim 13 wherein the second resin component comprises pigment.
18. An epoxy grout system, comprising (a) a first epoxy resin component comprising a novolac epoxy resin, a bisphenol F epoxy resin, and a non-reactive diluent comprising benzyl alcohol, and (b) a second epoxy curing agent component comprising an amidoamine, wherein an epoxy grout formed from the combination of (a) and (b) has a viscosity in a range of about 220,000 to 300,000 cps.
19. The epoxy grout system of claim 18 , wherein the first epoxy resin component comprises the bisphenol F epoxy resin in an amount of about 10-30 wt %, based on the weight of the first epoxy resin component.
20. The epoxy grout system of claim 18 , wherein the first epoxy resin component comprises the novolac epoxy resin in an amount of about 1-10 wt %, based on the weight of the first epoxy resin component.
21. The epoxy grout system of claim 1 , further comprising a silica material in an amount of about 40 to 80 wt %, based on the weight of the first epoxy resin component.
22. The epoxy grout system of claim 1 , wherein the second epoxy curing agent component is included in an amount that provides a stoichiometric ratio of amine to epoxy sites in the first epoxy resin component in a range of about 0.9 to 1.1.
23. The epoxy grout system of claim 18 , wherein the first epoxy resin component and the second epoxy resin component each further comprise a silica material in an amount of about 40 to 80 wt %, based on the weight of the respective epoxy resin component.
24. The epoxy grout system of claim 18 , wherein the third amine-containing curing agent is included in an amount that provides a stoichiometric ratio of amine to epoxy sites in the first epoxy resin component or in the second epoxy resin component in a range of about 0.9 to 1.1.