Polyurethane base coats – Excellent protection for many substrates

During any multi-layer coatings application the first coating to be applied is a base coat which protects the substrate from any humidity or any oxidizing substances and ultimately from corrosion. Polyurethane base coats can be used on many different substrates even though they are mainly used for the coating of metal substrates, such as untreated, phosphatized or galvanized steel panels and aluminum or chromated aluminum.

For these base coats mainly polyester based two-component polyurethane systems are used. They produce good adhesion and provide good corrosion protection.In case a higher chemical resistance and weather resistance are required, the hydroxyl content should be higher.

Moreover it is important to use fast curing systems in order to obtain an efficient coating process. One-component or two-component formulations for low-temperature curing or stoving coatings are the systems of choice.

Depending on required processing needs and property profile waterborne binders and conventional binders, both in one- or two-component formulations can be used.

Selection of products for industrial primers
This is just a small selection of the large product range for primers in plastic applications. Since there are almost limitless industrial applications possible and many different substrates used and because of varying processing characteristics it is essential to discuss the selection of products for each individual application. Get into touch with your regional representative to discuss your individual requirements.

One-component polyurethane raw materials for waterborne primers:
Two-component polyurethane raw materials for waterborne primers:
Two-component polyurethane raw materials for solventbased primers:

A selection of starting formulations

RR 6051/1	Waterborne stoving base coat, suitable for spraying (Bayhydrol® E 155)
RR 6060	Waterborne stoving dip primer (Bayhydrol® E 356)
RR 6150/1	Waterborne one-component corrosion protection primer (Bayhydrol® 130)
RR 6156	Waterborne one-component corrosion protection primer (Bayhydrol® UH XP 2592)
RR 4469	Two-component polyurethane primer filler (Desmodur® N 75/ Desmophen® 680)
RR 4433	Waterborne two-component polyurethane primer (Bayhydrol® A 145 / Bayhydur® N 3900)

Have a look at this in-depth information

Article published in PCE Magazine, Edition Oct-Dec. 2009: "State-of-the-art of corrosion protection with waterborne polyurethane coatings"

Brochure: “Bayhydrol® B 130/ B XP 2624 – a waterborne binder for industrial coatings"

Brochure: "Bayhydrol® UH XP 2592 - Waterborne Polyurethane modified Alkyd Dispersion for the Formulation of Topcoats,

Presentation: "Bayhytherm®, Bayhydur® BL, Bayhydrol® Dispersions for one-component stoving applications"

"Product presentation on Bayhydrol E XP 2777"

Get information on commercial vehicle coatings also.

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