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Functional Repair series

Metal roof rust free primer

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Product Introduction

This product is refined with special lotion added with organic rust conversion additives and special penetrants. It can be directly applied to the rust surface without rust removal. It reacts with the rust to generate a dense gray black rust protection coating, which solves the problems of complex, easy rust return and environmental protection of traditional rust removal and rust prevention processes.


Product number: LD-2712 

Product specification: 18KG


Product features

1. Rust removal is cleaner: the unique imported active conversion agent and rust removal agent of the product. Rust inhibitors can quickly and effectively dilute and dissolve the rust on the surface of color steel tiles, making rust removal cleaner and more effective.

2. Fast rust removal speed: The product acts on the surface of corroded color steel tiles, effectively dissolving surface rust and saving construction time.

3. Excellent rust prevention performance: This product is a weakly acidic polymer composite that can transform rust on the surface of color steel tiles into black organic iron compounds, thereby generating a composite film on the surface of steel that is bonded by chemical bonds and physical bonding. Therefore, the film layer is firm, dense, and has strong adhesion, preventing the separation of the steel substrate and the medium from being corroded.

4. Convenient Construction: The product is easy to apply with high coating rate and fast drying. Both roller brush coating and mechanical equipment spraying can be used

5. Water based environmental protection: This product is water-based and does not produce volatile gases, which is relatively environmentally friendly.


Product features

1. High conversion efficiency

The conversion rate of rust can reach over 95%, and the permeability is good. It can penetrate 60 microns on ordinary rusted substrates.

2. The paint film thickness is large

Excellent water resistance. The paint film table has a fast speed and greatly improves construction efficiency, eliminating complex pre-treatment processes such as polishing, acid pickling, rust removal, water washing, phosphating, sandblasting, and pre coating, greatly reducing construction intensity and comprehensive treatment costs.

3. Good compatibility

Good compatibility with various base and topcoats (epoxy, alkyd, acrylic, polyurethane, fluorocarbon), and good conversion effect on various new and old corroded surfaces.

4. Aquatic products

Non toxic, non flammable and non explosive, with low VOC content.


Construction steps

1. Before construction, the base surface should be clean, dry, and free of floating rust and dust

2. Before construction, mix this product evenly and apply it

3. After painting is completed, the surface should dry for about 20 minutes

4. After 24 hours of construction, the rust will completely dry and transform into rust


Matters needing attention

1. Clean the surface paint, rust, and dust before construction, and keep it clean and dry.

Before use, mix the product evenly to ensure that the product achieves a good effect.

3. During construction, ensure that the coating completely covers the construction area, and any residual or weak coating needs to be repaired in a timely manner.

4. After the construction is completed, let it stand and wait for the rust to transform and completely dry before applying the matching topcoat.

5. Rust conversion agent is a rust conversion agent suitable for use as a primer, not a immersion type rust remover. It converts easily rusty ferric oxide into stable ferric oxide, thereby achieving a closed and non rusting state.

6. After use, the rusted areas will undergo changes and reach a stable dark brown state (some rust marks may reach black). This is achieved based on different construction surfaces and locations to achieve different color effects, not necessarily black or dark brown after drying.

7. After the construction of this product is completed, it only serves as a sealing primer.

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