DINITROL 4942 underbody protective coating 1 L

Description

DINITROL 4942 is a protective coating for full-surface and local treatment of the vehicle underbody. Once dry, it forms a firm brown wax film that protects the surface against corrosion, stone chips, wear and chemicals from road traffic.

The material adheres well to clean metal and painted surfaces as well as to existing PVC or similar protective coatings. It is also suitable for protecting parts, machinery and steel structures exposed to demanding corrosive environments.

More than 2000 hours in the salt spray test At a dry film thickness of 500 μm according to ISO 9227, and up to 3000 hours in a two-coat system.

Stone chip protection The firm wax film resists mechanical stress and wear on exposed underbody parts.

Wide compatibility The material does not harm zinc, rubber or plastic parts and also adheres to PVC protective coatings.

Safe for automotive paint According to the technical data sheet it has no effect on paint — painted parts nearby do not need to be masked.

Typical uses in the workshop and for anti-corrosion treatment

• full-surface underbody protection
• local repairs of an existing protective coat
• painted and unpainted metal surfaces
• PVC and similar protective coatings
• spare parts, machinery and steel structures

It is also suitable for protecting components during storage and transport when they are exposed to an increased risk of corrosion.

Surface preparation and application

The substrate must be clean, dry and free of corrosion before application. If corrosion is already present on the surface, it should first be treated with the penetrating product DINITROL ML or a suitable cavity wax before applying the final protective coat.

Key Features

• Clean and dry the surface thoroughly
• Stir the material thoroughly before use
• For the 1 L pack, the DINITROL UBS application gun for underbody materials can be used
• For professional application, manual or automatic equipment, Airless or Airmix systems can also be used
• The recommended material and application temperature is 15–30 °C
• Apply a wet film of approximately 500–800 μm

Coat thickness and protection resistance

Once dry, the protective coat is approximately 300–500 μm thick. At a dry film thickness of 500 μm the protection lasts more than 2000 hours in the salt spray test according to ISO 9227.

In a two-coat system, resistance can reach up to 3000 hours. The result depends on the condition of the substrate, surface preparation and keeping to the application conditions.

Final coat with no subsequent painting DINITROL 4942 is used as the final underbody protective coating. It is not painted over after application.

How to protect the underbody against corrosion properly?

For a complete anti-corrosion treatment, the condition of the substrate, proper preparation and the right combination of penetrating coat and final protective coat are what matter. In our guide you will find a practical procedure and recommendations for applying underbody materials.

Underbody corrosion protection – procedure and choice of coating →

Specifications

Film type firm, waxy

Colour brown

Volume 1 L

Density at 23 °C approximately 1.09 g/cm³

Viscosity at 23 °C 800 mPa·s

Solids content 68 % by weight

Application temperature 15–30 °C

Wet film 500–800 μm

Dry film 300–500 μm

Drying at 20 °C 6–12 hours to dust-dry

Adhesion at low temperature down to −20 °C

Heat resistance up to +130 °C

Effect on automotive paint none

Salt spray test ISO 9227 more than 2000 h at 500 μm

Two-coat system up to 3000 h

Removal hydrocarbon solvents

FAQ – When should I choose DINITROL 4942 instead of a soft cavity wax?

DINITROL 4942 is suitable as a final protective coat for the underbody and other exposed external parts. Cavity waxes, on the other hand, are designed mainly to penetrate seams, cavities and internal sections.

How does it differ from DINITROL 4941 / CAR?

The main difference is the appearance of the final coat: 4942 leaves a brown wax film, DINITROL 4941 / CAR a black bitumen one. The recommended coat thickness is the same for both, 300–500 μm dry film.

Can the protective coat be removed?

Yes, with a hydrocarbon solvent such as white spirit. Fresh overspray outside the treated area can be removed the same way.

How long does an unopened pack last? – Safety Information (CLP)

Signal word: Warning

Hazard classification:

Flam. Liq. 3

STOT SE 3

Hazard statements:

H226 Flammable liquid and vapour.

H336 May cause drowsiness or dizziness.

Precautionary statements:

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.

P403+P235 Store in a well-ventilated place. Keep cool.

P405 Store locked up.

Specifications

• Colour: Brown
• Volume: 1L
• Application: Underbody corrosion protection
• Overpaintable: No
• Protection type: Wax coating
• Product type: Underbody protection