This product is used as a two-component non-yellowing polyurethane coating curing agent, with good weather resistance

chemical components
     This product is an HDI-based modified polyisocyanate containing isocyanurate.
supply form  
     CORONATE-HXR-90B is a butyl acetate solution with a solid content of about 90%.

  Specifications

Features
    As a curing agent for non-yellowing polyurethane coatings, CORONATE HXR-90B has better performance in all aspects compared with biuret and adduct curing agents. Due to its good heat resistance, chemical solvent resistance and good compatibility with polyols, it is widely used in various industrial coatings, such as motorcycle parts, automotive refinish paints, wood coatings, etc.

  application
      CORONATE HXR-90B can be combined with acrylic polyols to produce non-yellowing coatings with excellent weather resistance and UV resistance. The two-component paint can keep the original color of the painted parts unchanged for a long time, so it is often used in industrial applications such as automotive refinishing paints.
The two-component coatings prepared by combining CORONATE HXR-90B with alkyd polyols are mainly used in industrial fields, such as wood coatings.
Adding CORONATE HXR-90B to nitrocellulose-based coatings or polyurethane-based coatings can significantly improve the physical properties of coatings such as chemical solvent resistance. However, it should be noted that the compatibility of the two components must be tested before combined use.

  Physical properties of paint film (with acrylic polyol) 

Polyol: Acrydic A-801 (Dic) NCO/OH=1.0/1.0 (mol)
Solid content: 35% (D/D solvent)
Drying time: 25℃×7day
Paint film: varnish film thickness 40μ (dry)

Operating Rules 
Storage Conditions
CORONATE HXR-90B should always be stored in an airtight container at room temperature. Since it is extremely reactive with active hydrogen groups, it should avoid contact with moisture in the air. For long-term storage, it should be stored indoors at room temperature (15 – 25C).
when using it
If the NCO group in this product reacts with water, some insoluble substances such as urea group and CO2 gas will be generated, which will increase the pressure in the closed container and cause the container to expand.
When accessing this product or emptying the raw material barrel, care should be taken to avoid moisture contamination. The operation of transferring the raw material to the container must also be carried out in a dry environment, and the container must be nitrogen filled before sealing.
when diluted
When diluting this product, a solvent with low water content should be used as much as possible, and attention should be paid to avoid contact with water during the dilution operation. The dilution operation must be carried out in a dry environment.

safety measures
Because CORONATE HXR-90B contains active isocyanate and solvent, please pay attention to safety when using it.
Please refer to the MSDS safety instructions for proper use and operation before using this product.
This product is flammable and should be constructed in a non-smoking area.
In order to prevent this product from coming into contact with the skin, please follow the rules of safe operation and wear protective equipment such as safety glasses and safety gloves when using it.
CORONATE HXR-90B is mainly used for spraying paint, in order to prevent the dust from being inhaled into the human body, please wear a gas mask or a protective mask.
The free isocyanate content of CORONATE HXR-90B is less than 0.2%, and it will not increase in long-term storage.

  Remark  
The above-mentioned explanatory materials are for reference only in the investigation and cannot be used as a guarantee or authorized representative with legal responsibility. Because some arrangements with special practical application and use conditions cannot be carried out under the supervision of our company, the feasibility of its operation should be fully considered according to the above information.