Japan Tosoh TOSOH (formerly NPU) CORONATE HXR curing agent

                           

Chemical composition
HDI is a polyisocyanate modified by trimer of aliphatic isocyanate.

Form
CORONATE-HXR is solvent-free and 100% solids.

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

General shape

CORONATE HXR ProductsA
Appearance	Light yellow liquid
NCOcontent (%)	21.6 -22.1
Solid content (%)	100
Viscosity25℃(mPa·s )	1700 -3300
color number (APHA)	< 40
FreeHDI(wt%)	< 0.2
Proportion	About 1.170

Features
CORONATE HXR as non-yellowing polyurethane coating curing agent, trimer It has better characteristics than other biuret type and amino adduct type curing agents. CORONATE HXR has good heat resistance and good compatibility when mixed with polyols or solvents, and can be widely used in motorcycle parts, car repairs, wood furniture, etc.

Application
Non-yellowing paint produced by mixing CORONATE HXR with acrylic polyol It has good weather resistance and UV resistance, so it can keep the original color of the paint for a long time. This two-component paint is excellent for automotive surface coatings and other industrial applications. It forms a two-component coating with alkyd resin, which can be used for woodworking applications, etc.

Solubility
CORONATE HXR can dissolve in most esters and aromatic hydroxyls in solvent. For example: butyl acetate, butyl ester, toluene, xylene, etc. But aliphatic solvents are not suitable for isocyanates.

Operating rules

Saving conditions
CORONATE HXR should always be stored in an airtight container at room temperature. Since it is highly reactive with active hydrogen groups, contact with moisture in the air should be avoided. For long-term storage, it should be stored indoors at room temperature (15 – 25C).
When using
If the NCO group in this product reacts with water, it will generate Some insoluble substances such as urea groups and CO₂ gas will increase the pressure in the closed container and cause the container to expand. In this When taking the product or emptying the raw material barrel, care should be taken to avoid moisture contamination. The operation of transferring raw materials to the container must also be carried out in a dry environment, and the container should be filled with nitrogen before sealing.
When diluted
When diluting this product, solvents with low water content should be used as much as possible , and care should be taken to avoid contact with water during the dilution operation. The dilution operation must be carried out in a dry environment.

Security measures
Because CORONATE HXR contains active isocyanate and solvent, please pay attention to safety when using it . Before using this product, please refer to the MSDS safety instructions for correct use and operation. This product is flammable and should be constructed in a no-smoking area. In order to prevent this product from coming into contact with the skin, safety operating rules should be followed and protective equipment such as protective glasses and safety gloves should be worn during use. CORONATE HXR is mainly used for spraying paint, in order to prevent the sprayed dust from being inhaled into the human body, please wear a gas mask or protective mask. The free isocyanate content of CORONATE HXR is less than 0.2%, and it will not increase after long-term storage.

p; 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. In this When taking the product or emptying the raw material barrel, care should be taken to avoid moisture contamination. The operation of transferring raw materials to the container must also be carried out in a dry environment, and the container should be filled with nitrogen before sealing.
When diluted
When diluting this product, solvents with low water content should be used as much as possible , and care should be taken to avoid contact with water during the dilution operation. The dilution operation must be carried out in a dry environment.

Security measures
Because CORONATE HXR contains active isocyanate and solvent, please pay attention to safety when using it . Before using this product, please refer to the MSDS safety instructions for correct use and operation. This product is flammable and should be constructed in a no-smoking area. In order to prevent this product from coming into contact with the skin, safety operating rules should be followed and protective equipment such as protective glasses and safety gloves should be worn during use. CORONATE HXR is mainly used for spraying paint, in order to prevent the sprayed dust from being inhaled into the human body, please wear a gas mask or protective mask. The free isocyanate content of CORONATE HXR is less than 0.2%, and it will not increase after long-term storage.