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Polyurethane Finish Coating

Polyurethane Finish Coating

The polyurethane coating (PU paint) is a kind of finish paint film containing a number of polyurethane links as well as urea links, ether links, ester bonds, allophanate links, etc.
This polyurethane coating (PU paint) is very common with package of single component or two components. The 2 component polyurethane finish coating is composed of isocyanate prepolymer and hydroxyl-containing resin, or normally known as firming agent and base.
In the meanwhile, there are many types of the polyurethane coating (PU paint) used as finish paint, including:
1. S06-1 Polyurethane Zinc Rich Primer (Three Components)
2. S53-81 Polyurethane Iron-red antirust coating
3. S53-82 Polyurethane MIO antirust coating
4. S53-83 Polyurethane Light color antirust coating
5. S52-41 Polyurethane Cover Coating (indoors type, two component)
6. S52-42 Polyamide Resin Porcelain Imitation Coating (Two components)
7. S52-40 Polyurethane Silver Anticorrosion Finish Coating (Three components)
8. S52-40 Polyurethane Finish Coating (outdoors type, two components)

With excellent mechanical properties and solid content, the polyurethane paint (PU coating) has wide applications and great potential.   
In the following we will introduce you our two component outdoor polyurethane finish coating, S52-40, in the hope of assisting customers in choosing the right products.

S52-40Outdoor Polyurethane Coating (PU Paint) with Two Components
This S52-40 type finish paint is the widely used polyurethane coating (PU paint) in out doors with 2 components packaging. This PU coating is composed of hydroxyl-containing resin, weather resistant pigment and firming agent. Firm, bright, and rich, the finish paint film boasts strong resistance to abrasion, weather, oil, water, boiling water, sea water, benzene solvents, and acid, alkali, salt, chemical and atmospheric corrosion, etc.


Mixture Ratio Component A: Component B =4:1
Curing Time 23±2℃: 20min
Shelf Life 23±2℃: 8h
Coating Methods Airless spraying, manual brushing and roller coating
Thinner X-10 Polyurethane paint thinner
Maximum Dilution <5%
Spray Holes 20P20
Spraying Pressure 150kg/cm2 (For reference only, adjustable)
Tool Cleaning X-10 Polyurethane paint thinner
Paint Film Thickness Wet film: 90um, Dry film: 35um
Coating Interval 0℃: the shortest interval 3h, the longest 48h; 25℃: the shortest interval 2h, the longest 24h; 35℃: the shortest interval 1h, the longest 16h
Surface Treatment Apply the polyurethane finish coating within the allowed interval between the preceding coating.
Operating Conditions 1. The two component paint should be mixed fully and evenly, according to the required mass ratio. Keep it still for 20 minutes before application. 2. The substrate temperature should be at least 3℃ higher than the dew point. 3. The ideal temperature range for using the outdoor polyurethane finish coating is 0-35℃.It can not be applied when there is a relative humidity higher than 85% on rainy, foggy, and snowy days, or under burning daylight in summer.
Preceding Coats Polyurethane iron-red antirust coating
Subsequent Coats Outdoor polyurethane finish coating, indoor polyurethane finish coating, polyurethane oil proof paint
Recommended Number of Coats 2 coats is recommended when the polyurethane coating is used as primer, with the dry film thickness of 60-70um. When the two component outdoor polyurethane finish coating is employed in the coated layer, 1 coat is needed.


Color All colors
Gloss Glossy
Theoretical Coverage 120g/m2 (Varied for differently colored polyurethane finish coating)
Specific Weight Approximately 1.33
Drying Time 23±2℃: Surface drying: 2h Complete drying: 24h
Complete Curing 23±2℃: 7d
Flash Point Component A: 25℃, Component B: 30℃
Storage Life 6 months

Founded in 1976, Zhongbang Chemical Group Co.,Ltd is a professional manufacture and supplier of polyurethane coating. Besides polyurethane coating, we can also provide acrylic coating, alkyd primer (alkyd paint), wall paint, epoxy primer and so on. All of our products have passed the certification of ISO9001: 2000. Our products have been well received by customers from Russia, Spain, Ukraine, Holland, India, Mexico, and many countries and regions in Africa. If you need high quality polyurethane coating and want to know more information, please contact us freely.

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