DINITROL 447 black 1 L black

Description

DINITROL 447 is a fast-drying protective coating based on resin and rubber, designed for additional protection of the bodywork against corrosion, stone chip impacts and road salt.

It contains zinc additives that increase its anti-corrosion effect. The zinc ions also help prevent or slow down corrosion in places where the protective film is locally damaged.

Paint over it in the body colour Once thoroughly dry, it can be painted over with standard automotive paints, so the repaired area does not stay black.

Does not attack PVC It can also be applied over original PVC underbody coatings without damaging them.

Permanently elastic film The layer stays elastic and does not crack when the body flexes while driving.

No aggressive solvents Contains no chlorinated hydrocarbons, esters or ketones and is free of bitumen and asbestos.

Additional body protection

DINITROL 447 is mainly intended for the aftercare of vehicle bodies where an elastic protective layer resistant to mechanical stress and road salt is required. It is used around the wheels, on sills and on the lower parts of the vehicle.

Key Features

• wheel arches and wing edges
• sills and lower body edges
• repaired areas after bodywork
• cars and vans, buses, lorries
• agricultural and construction machinery, rail vehicles

Surface preparation

The substrate must be clean, dry and free of corrosion before application. Remove dust, grease and all loose contaminants.

If there is corrosion on the surface, first remove it mechanically and treat residual corrosion in pits with DINITROL RC 900 rust converter .

Applying the 1 L can

• Clean, degrease and thoroughly dry the surface
• Remove corrosion and poorly adhering layers
• Stir the product thoroughly before use
• Apply evenly in a cross pattern using a suitable underbody coating gun
• The recommended air pressure is 4–6 bar and the application temperature 10–25 °C
• The recommended wet film thickness is approx. 1000 μm

What you will need

To apply from the 1 litre can, use the UBS gun, and for series work with an adjustable spray pattern, the DINITROL UBS/HR gun. The full range is in the application equipment category.

Check the thickness of the applied coating with a coating thickness gauge.

Cover the surrounding parts with materials from the masking category, wear gloves and eye protection, and keep white spirit at hand for overspray.

Painting over

Once thoroughly dry, DINITROL 447 can be painted over with most commercially available automotive paints. The manufacturer recommends first testing compatibility with the specific paint system on a small area.

Paintability is exactly what sets 447 apart from bitumen coatings such as DINITROL 4941 / CAR or DINITROL 4942 — these form the final layer and cannot be painted over.

1 L can or spray?

The 1 L can is intended for application with a spray gun and is much more economical for larger jobs — you pay only slightly more than for the spray for twice the volume. For smaller spot repairs and when you have no gun at hand, choose DINITROL 447 black 500 ml spray .

The product is also available in grey. More materials can be found in the DINITROL stone chip protection category.

Specifications

Product type stone chip protection

Base resin / rubber

Colour black

Volume 1 L

Density approx. 1 g/ml

Solids content approx. 50 %

Application temperature 10–25 °C

Application pressure 4–6 bar

Recommended wet film approx. 1000 μm

Film properties permanently elastic

Water solubility insoluble

Salt spray test DIN 50021 more than 400 hours

Paintable yes, once thoroughly dry

Overspray removal white spirit

Shelf life 24 months (cool, dry, unopened)

FAQ – Which DINITROL coatings can be painted over?

From the stone chip and underbody protection range, 447 and 440 can be painted over. Bitumen and wax coatings (4941 / CAR, 4942, 482, Metallic) form the final layer and cannot be painted over.

What are the zinc additives in the coating for?

Zinc ions slow down rust formation even where the protective film is broken — for example after a stone impact. Without zinc, corrosion would progress faster at such a spot. The zinc-free version is DINITROL 445.

Can I apply DINITROL 447 over rust?

Not directly. The substrate must be clean, dry and free of corrosion before application. Remove loose rust mechanically and treat residual corrosion in pits with a rust converter.

How do I remove overspray outside the treated area?

Wet overspray can be wiped off with a cloth dampened with white spirit. Once dry, it is much harder to remove, so it is better to mask the surroundings beforehand.

Safety information (CLP)

Signal word: Danger

Hazard classification:

Flam. Liq. 2

Skin Irrit. 2

Eye Irrit. 2

Skin Sens. 1

STOT SE 3

STOT RE 2

Aquatic Chronic 2

Hazard statements:

H225 Highly flammable liquid and vapour.

H315 Causes skin irritation.

H317 May cause an allergic skin reaction.

H319 Causes serious eye irritation.

H336 May cause drowsiness or dizziness.

H373 May cause damage to organs through prolonged or repeated exposure.

H411 Toxic to aquatic life with long lasting effects.

Precautionary statements:

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

P260 Do not breathe vapours/spray.

P280 Wear protective gloves and eye protection.

P370+P378 In case of fire: Use water to extinguish.

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

Technical data according to the DINITROL 447 TDS (DINOL GmbH, 08.2024), safety data according to the DINITROL 447 Black safety data sheet (DINOL GmbH, revision 16.12.2025, cat. no. 5100).

Specifications

• Base: Resin / rubber
• Colour: Black
• Volume: 1L
• Application: Body protection against stone chips and corrosion
• Paintable: Yes
• Product type: Stone chip protection