Sealers, methods of producing sealers, and methods of sealing construction products

Patent metadata

Field	Value
Publication number	US-11773285-B2
Application number	US-202117184230-A
Country	US
Kind code	B2
Filing date	Feb 24, 2021
Priority date	Feb 25, 2020
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

Sealers, construction products, and methods of sealing construction products are provided. In an exemplary embodiment, a sealer includes a first part and a second part, the first part includes an epoxy resin having an epoxy resin molecular weight of about 5,000 Daltons or greater, and also includes an epoxy functional diluent having a diluent molecular weight of about 2,000 Daltons or less. The second part includes a crosslinking agent that is a polyamine. The sealer further includes a particulate with a specific gravity of from about 1 to about 5 grams per cubic centimeter.

First claim

What is claimed is:

1. A sealer comprising:
a first part, wherein the first part comprises an epoxy resin having an epoxy resin molecular weight of about 5,000 Daltons or greater, an epoxy functional diluent having a diluent molecular weight of about 2,000 Daltons or less, an epoxy silane oligomer, and water, wherein the epoxy resin is a glycidylated novolac resin, and the epoxy functional diluent is 1,4 butanediol diglycidyl ether;
a second part, wherein, the second part comprises a crosslinking agent, and wherein the crosslinking agent is a modified polyamine adduct, and wherein the second part further comprises an acid;
a particulate having a specific gravity of from about 1 to about 5 grams per cubic centimeter, wherein the particulate is talc; and
wherein the glycidylated novolac resin is present in the sealer in an amount of from about 5 to about 30 weight percent, the 1,4 butanediol diglycidyl ether is present in the sealer in an amount of from about 2 to about 45 weight percent, the particulate is present in the sealer in an amount of from about 4 to about 30 weight percent, the epoxy silane oligomer is present in the sealer in an amount of from about 0.5 to about 5 weight percent, the modified polyamine adduct is present in the sealer in an amount of from about 5 to about 55 weight percent, and the water is present in the sealer in an amount of from about 15 to about 75 weight percent, all based on a total weight of the sealer, where the total weight of the sealer is the sum of a total weight of each part of the sealer.

2. The sealer of claim 1 , wherein the particulate has a median particle size of from about 1 to about 10 microns.

3. The sealer of claim 1 , wherein the acid is acetic acid, and wherein the sealer comprises the acetic acid in an amount of from about 0.5 to about 20 weight percent, based on the total weight of the sealer.

4. A method of producing a sealer, the method comprising the steps of:
preparing a first part, wherein the first part comprises an epoxy resin having an epoxy resin molecular weight of about 5,000 Daltons or greater, an epoxy functional diluent having a diluent molecular weight of about 2,000 Daltons or less, an epoxy silane oligomer, and water wherein the epoxy resin is a glycidylated novolac resin, and the epoxy functional diluent is 1,4 butanediol digylcidyl ether, wherein the glycidylated novolac resin is present in the first part in an amount of from about 5 to about 40 weight percent, the 1,4 butanediol digylcidyl ether is present in the first part in an amount of from about 10 to about 50 weight percent, the epoxy silane oligomer is present in the first part in an amount of from about 2 to about 10 weight percent, and the water is present in the first part in an amount of from about 30 to about 90 weight percent, all based on a total weight of the first part;
preparing a second part, wherein the second part comprises a crosslinking agent, acetic acid and water, wherein the crosslinking agent is a modified polyamine adduct, and wherein the modified polyamine adduct is present in the second part in an amount of from about 20 to about 70 weight percent, the acetic acid is present in the second part in an amount of from more than 0 to about 50 weight percent, and the water is present in the second part in an amount of from about 10 to about 60 weight percent, all based on a total weight of the second part; and
adding a particulate to at least one part of the sealer, wherein the sealer comprises a plurality of parts, and wherein the plurality of parts comprises the first part and the second part and wherein the particulate is present in the sealer in an amount of from about 4 to about 30 weight percent, based on a total weight of the sealer, where the total weight of the sealer is the sum of a total weight of each part of the plurality of parts of the sealer.

5. The method of claim 4 , wherein adding the particulate comprises adding the particulate, wherein the particulate has a specific gravity of from about 1 to about 5 grams per cubic centimeter, and wherein the particulate has a median particle size of from about 0.5 to about 50 microns.

6. The method of claim 5 , wherein adding the particulate comprises adding the particulate, wherein the particulate is selected from the group of acrylic latex, wollastonite, barium sulfate, aluminum silicate, potassium silicate, sodium silicate, urea beads, bentonite, phyllosilicate, clay, talc, and combinations thereof.

7. The method of claim 4 , wherein adding the particulate comprises adding the particulate wherein the particulate is inorganic.

8. A method of sealing a construction product, the method comprising the steps of:
preparing a sealer by mixing a first part with a second part, wherein the first part comprises an epoxy resin having an epoxy resin molecular weight of about 5,000 Daltons or greater, an epoxy functional diluent having a diluent molecular weight of about 2,000 Daltons or less, an epoxy silane oligomer, and water, wherein the epoxy resin comprises a glycidylated novolac resin, the epoxy functional diluent comprises 1,4 butanediol diglycidyl ether, and wherein the second part comprises a crosslinking agent that comprises a modified polyamine adduct, and wherein the second part further comprises an acid, wherein the sealer further comprises a particulate, wherein the glycidylated novolac resin is present in the sealer in an amount of from about 5 to about 30 weight percent, the 1,4 butanediol diglycidyl ether is present in the sealer in an amount of from about 2 to about 45 weight percent, the particulate is present in the sealer in an amount of from about 4 to about 30 weight percent, the epoxy silane oligomer is present in the sealer in an amount of from about 0.5 to about 5 weight percent, the modified polyamine adduct is present in the sealer in an amount of from about 5 to about 55 weight percent, and the water is present in the sealer in an amount of from about 15 to about 75 weight percent, all based on a total weight of the sealer, where the total weight of the sealer is the sum of a total weight of each part of the sealer; and
applying the sealer to the construction product, wherein the construction product comprises cement, wood fiber, and silica sand.

Assignees

• Axalta Coating Systems Ip Co

Inventors

• Krall Eric
• Bailey James
• Vang Fong

Classifications

• C09D163/04 Primary

  Epoxynovolacs · CPC title

• C08G59/38

  together with di-epoxy compounds · CPC title

• C08G59/50 Primary

  Amines · CPC title

• C09D5/00

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title

• C09D7/61

  inorganic · CPC title