ARADUR® 140-4

In combination with solid epoxy resins or their solutions for cold-curing, solvent-containing lacquers featuring adequate working times, non-tacky films after the pre-reaction, very high
degrees of adhesion and flexibility along with good anti-corrosion protection. Reactivity increases throughout the Aradur 115-4, 125-4 and 140-4 hardeners. The degree of sensitivity to high atmospheric humidity increases in proportion with the amine content.

Mainly with liquid epoxy resins such as Araldite® GY 250, GY 776 for solvent-free or heavy-filled mastics, epoxy resin mortars or reaction adhesives. When used with liquid or (preferably) solid epoxy resins or their solutions, such as Araldite GZ 7071 X 75, for the formulation of cold-curing, solvent-containing coatings. Main applications in the construction industry, but also in ship-building and for anti-corrosion protection.

The optimum mix ratio of Araldite GY 250 and Aradur 140-4 is 100:50 parts by weight. The mix ratio of Araldite GZ 7071 X 75 to Aradur 140-4 should be selected as 100:18 parts by
weight. Deviations from this of up to 10 % are acceptable. In such cases a higher proportion of hardener provides increased flexibility and adhesion, while improved chemical resistance is achieved with a reduced proportion of hardener.

Aradur 140-4 should be stored in a dry place, preferably in the sealed original container, at temperatures between 2 and 40°C. The product should not be stored exposed to direct sunlight. Keep this product from heat or ignition sources. Shelf life (at storage temperature between 2 - 40°C) (see expiry date on original container) several years