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Waterborne, Low-VOC Epoxy Concrete Primer by Huntsman

Adhesives Formulation

Applicable Type

Waterborne Adhesives , Reactive Adhesives , Epoxy Adhesives

Applicable Base Polymer

Epoxies (EP)

Applicable Industrial Sectors

Buildings & constructions

Applicable Base Polymer Properties

Waterborne epoxy dispersions have been employed effectively for many years in the coatings market primarily for the surface protection of concrete and metals. These products were developed in response to environmental regulations to reduce solvent levels in coatings. Since these dispersions adhere well to a wide variety of substrates and provide a high degree of strength and resistance to service environments, they have also naturally found applications as adhesives.

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

Epoxy resin (Araldite GY 6010, Huntsman)

xxxxxx

Black coloring paste (Araldite DW 0137-1, Huntsman)

xxxx

Reactive diluents (Araldite DY-D, Huntsman)

xxxxx

Matting agent

xxxxxx

Leveling agent

xxxx

Co-solvent

xxxxx

Epoxy curing agent (Aradur 39, Huntsman)

xxxxxx

Pigment dispersion

xxxxx

Defoamer

xxxx

Titanium dioxide

xxxxx

Barium sulfate

xxxxxx

Microcrystalline silica

xxxxx

Co-solvent

xxxxx

Deionized water

xxxxxx

Typical Properties

Properties

Pigment : binder ratio

xxx

Mixing ratio Part A: Part B, by volume

xxx

Solids Content (by weight), %

xxxx

VOC content (minus water) gm/L

xxxx

Mixed viscosity at 23°C, KU (15 Minutes)

Mixed viscosity at 23°C, KU (60 Minutes)

xxx

Processing

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Resulting Properties

Waterborne epoxy adhesives can be produced with epoxy emulsions and polyamide-amine curing agents. A typical starting formulation is shown in the table above. This formulation can be used as either a coating or an adhesive. In either application, once the mixed emulsion is applied to the substrate the water must be evaporated. In the case of the adhesive application, this must be completed before non-porous substrates are mated. With the particular formulation presented above, the pot life is several hours at room temperature.

Source: Huntsman, Waterborne Epoxy System for Coatings, 2011

Tips and Tricks

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