Inks and Paints Sector

Inks and Paints Sector

The use of ER 125 Resin in the Ink Industry

ER 125 Resin has applications in Heatset, News, and Gravure inks. It is used as a partial replacement for hydrocarbon resin, alkyd resin, rosin modified hydrocarbon resin, phenolic modified rosin resins, oxidized asphalt, and metal resinates.

In Heatset inks it is primarily used as a replacement for hydrocarbon resin. It has its best application in the carbon black grinding vehicles where it can replace up to ½ of the hydrocarbon resin and up to ¼ of the alkyd resin. It also can be used in the gelled let down varnishes where it can replace up to ¼ of the rosin modified hydrocarbon resin and up to ¼ of the phenolic modified rosin resins. Unlike hydrocarbon resins, ER Resin has functionality and will react with aluminum gelling agents.

In News ink formulas ER 125 Resin is used as a partial replacement for Gilsonite® or oxidized asphalt. ER 125 Resin has a solution viscosity that is lower than Gilsonite®; so more resin can be added to the formula at the same tack and viscosity. The increased resin loading will give a News ink better rub-off properties.

In Gravure inks ER 125 Resin is used as a substitute for up to ½ of the metal Resinate in the formula. ER 125 Resin develops the carbon black more efficiently than other wetting agents. Because of this higher structure carbon blacks can be used while still maintaining the gloss and adhesion characteristics that were attained using low structure carbon black. The use of high structure carbon black will yield ink with a bluer print tone, without the addition of expensive alkali blue or iron blue toners.

Special grades of Gilsonite called Selects are also standard ingredients in black ink formulations and are used as additives in asphaltic paints and varnishes.

Please contact us with your specific need and we will be delighted to assist you.

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Gilsonite has been used in the paint industry for many years. It is used in bitumen based paints to increase the hardness of the paint film. It is used in automobile chassis blacks and radiator coatings as a low cost hard drying resin. It is also used in wood stains for its natural deep brown color.

Because of the unique chemical and physical properties of Gilsonite it can impart some very beneficial properties to a paint or coating. The high nitrogen content of Gilsonite will improve the adhesion and UV light stability of a coating. Gilsonite is both hydrophobic and chemically inert; these properties will improve the water and chemical resistance of a coating.

The addition of 35 to 50% of Gilsonite can make a 80 to 100 pen bitumen into a 5-10 pen asphalt that is more suitable for paint making. Modifying bitumen with Gilsonite is better than modifying it with air blowing. When bitumen is modified with air blowing, the colloidal balance is upset. This can cause oil and waxes to be exuded from the bitumen. If these oils and waxes migrate to the surface, the gloss of the coating will be reduced. If these oils and waxes migrate to the interface of the coating, the adhesion of the coating will be reduced.

We have starting formulas for many coatings using Gilsonite. Please contact us with your specific need and we will be more than happy to assist you.