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2006-07-31 News Headlines

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Polyester resins coil coatings more environmentally attractive

BASF Coatings universal primers with polyester resins for coil coating show pigmentation is chromate-free and free of other heavy metals and carcinogenic substances.

Primers and topcoats form the functional basis for coil coating. Primers, applied directly to the cleaned, pre-treated strip, provide the necessary conditions for good adhesion of the topcoat systems and protect against corrosion. Universal primers, applied to the pre-treated metal, guarantee a number of important functionalities with their film thicknesses of approx. 5 µm, for instance adhesion for the topcoat, flexibility, deep-drawability, and reliable corrosion protection. Apart from their environmental compatibility, however, they can also play a significant role in increasing production efficiency. Rigorous refinements of a profitability-critical product therefore yield continual improvements.

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The new, third generation of coil coating universal primers from BASF Coatings AG is suitable for every type of pre-treatment, is a significant improvement in terms of spreading rate and efficiency, and offers higher eco-efficiency. The first generation still required a chromate-containing pre-treatment. The second was introduced in 1995 and was one of the very early products designed with environmental protection in mind, being the first to enable chromate-free pre-treatment. The now-improved, chromate-free universal primer currently represents the optimum for the present technology standard.

The homogeneous white system solution offers the ideal conditions for smooth and textured topcoats and does not just prevent the specter of rust on galvanized steel panels. It sets new records with regard to spreading rate, functionality, adhesion, flexibility and deep-drawability. Corrosion protection values determined using appropriate test methods exceed all previous results. The high-build process is also possible. The improved properties of the paint finishes can be demonstrated with the usual tests, such as the T-bend, tape or salt spray tests.

In addition, BASF Coatings stored sample panels in climate chambers at 100 per cent humidity and 40 degrees for periods of many days. At the end of this there was not even a hint of rust. The chromate-free universal primer therefore also passed the weathering test specified by the construction industry.

The BASF Coatings division develops, produces and markets a high-quality range of innovative automotive OEM coatings, automotive refinishes and industrial coatings as well as decorative paints.

Coatings by BASF protect surfaces and give them color and luster, for automotive OEM coatings, automotive refinish coatings and industrial coatings.

Find more Information about BASF.

Read a recent press release from BASF about - 'BASF engine coolant fulfills the stringent demands of the automotive industry by preventing overheating and protecting cooling systems in summer as well as in winter.'

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