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Originally developed as a dried-in-place pre-treatment for use in steel mills on zinc-coated steel, Bonderite 1455 from Stowlin Croftshaw has recently found many other potential uses.

The coating produced is a polymer sealed pre-treatment that provides paint coatings with enhanced adhesion and corrosion resistance.

Bonderite 1455 can be used on mild steel, zinc-coated steel and aluminium substrates, with good coatings produced on all of these substrates.

It can be made up in tap water; there is no need for deionised water.

In addition, Bonderite 1455 is said to be safer to use than traditional chrome-containing treatments previously used in these areas.

Features include: multi-metal treatment capability; non-toxic chemistry, no proscribed heavy metals; ambient temperature operation; simple effluent treatment; usable in existing iron phosphate plants without extensive modification or thorough cleaning out; simple make up of baths; simple control methods; significant coating adhesion improvement compared with clean-only processes; increase in bond strength when used on metallic components that are bonded together with adhesive; very little or no rinse processes leading to reduced effluent; compatible with most types of paint finish; low sludge, reduced waste; and no issues with ‘End of Life Regulations’, WEEE or VEL.

The pre-treatment can be used as a final rinse additive on iron phosphate plants in place of chrome or other inhibiting final rinse additives.

Added to the final rinse water on three- or four-stage iron phosphate plants at a concentration of 0.5 per cent, it can increase the corrosion resistance of the final paint scheme.

It can also be used as the main treatment in a four- or five-stage pre-treatment plant where alkali cleaning is the first process step.

In this case, the treatment stage is made up at one to three per cent concentration depending on the major substrate to be processed.

Bonderite 1455 can be used as a manual application pre-treatment for larger components and structures.

In this case, the surfaces to be treated must be clean and grease free prior to application.

The Bonderite 1455 solution can be applied to either freshly shot blasted or degreased, scale-free surfaces by simple swabbing, spraying or roller application at between one to three per cent concentrations with no subsequent rinsing.

No effluent is produced.

The pre-treatment can also be used as a cleaner coater in a similar way to iron phosphate cleaner coaters.

Stowlin Croftshaw

The Stowlin Croftshaw group has more than 75 years' experience supplying high-quality innovative cleaning solutions, processes, metal cleaning machines, basic chemicals and solvents.

We are committed to the responsible and ethical management of our products and this combined with our unrivalled technical expertise, make us the supplier of choice.

As well as offering a comprehensive range of commodity chemicals and solvents, we also supply our own trademark speciality cleaning and phosphating products, such as Cool-Phos and Vaposol. In addition, we supply advanced aqueous, non-aqueous and vapour degreasing products in our capacity as national distributors for world-class companies such as Petroferm, Mykal and Henkel.

We offer a wide range of ancillary services including contract blending and packing, controlled waste disposal, supply and installation of metal cleaning equipment and chemical storage tanks, in-house technical support and on-site demonstration facilities. We also offer advice with respect to current legislation.

Our market sectors include many small to large companies operating in the electronics, aerospace, medical, optical and military industries. Other areas include general metal treatment, food processing, effluent treatment, janitorial, hygiene and swimming pool chemistry.

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