Heavy Duty Coating

DHDC-3450 Modified chlorinated rubber intermediate/top coat, high build

Top coat for steel structures

This paint is a air-drying type modified chlorinated rubber paint made by using pigments with excellent color retention. It is a high build chlorinated rubber intermediate/top coat with excellent weather resistance, water resistance, and salt water resistance. It is a practical paint that can shorten the painting process and cost because it has the advantage of being able to paint much thicker than general chlorinated rubber top coats in one coat.


Paint type
Modified chlorinated rubber(high build) / Intermediate/top coat
Drying time
Drying time
Category 5℃ 20℃ 30℃
Set-to-touch 1 hour 30 minutes 20 minutes
Dry-hard 8 hours 4 hours 4 hours
Over-coat (Min.) 15 hours 8 hours 6 hours
Dilution ratio
▷Brush, roller coating: less than 15% ▷Airless, spray coating: less than 10%
Specific gravity
Approx. 1.3(Based on white color)
Theoretical Coverage
5.6 ㎡/ℓ (1 time - 75㎛)
Solid volume ratio
Approx. 42±1%
White, other colors
Thickness of dried film
Flash point
At least 27℃
Shelf life
12 months (Dry, cool, and dark place with good ventilation)

how to use

Surface treatment
1. Completely remove oil, moisture, sand, dust, and other foreign matter from the surface to be coated.
2. Sufficiently dry the surface to be coated before coating.
3. After primer coating, clean up the welded areas (blackened and rusted areas) with a disc sander.
Then, touch up with this paint and continue coating.
Coating method
1. Although coating can be done by either brush, roller, air or airless spraying, airless spray coating is best for
obtaining a sufficient coating thickness.
2. Airless spray coating :
- Tip diameter : 0.019"~0.023"
- Injection pressure : More than 3000 P.S.I (210㎏/㎠)
- Store the coating equipment after cleaning with an exclusive thinner immediately after use.
Preceding and follow-up coating
1. Preceding coating : ZINC CATE PRIMER(DHDC-1650, DHDC-1800), Chlorinated rubber system paint
1. Sufficient performance after last coating is achieved after drying for 7 days at 20℃.
2. Follow-up coating with a brush or roller on top of chlorinated rubber paint may result in bleeding as the
internal pigment melts. To prevent this, airless spray coating is recommended.
3. This is a thermoplastic substance that can be softened and decomposed at high temperature (70℃).