Water-dispersible isocyanate curing agent STD 268
Product Description
STD268 is a water dispersible polyisocyanate based on hexamethylene diisocyanate (HDI). In combination with waterborne polyurethane, polyacrylate, etc., it can be used for water-borne coatings and adhesive. After addition of STD268, the ready-to-use mixture must be used within the pot life.
STD 268 can be diluted with the solvents, such as propylene glycol methyl ether acetate (PMA), propylene glycol diacetate (PGDA), butyl acetate, etc. Only PU grade
solvents (< 0.05% water) should be used and the solvents must be tested in advance by the user to determine suitability.
Properties
1.High gloss and high building up.
2.Excellent weather resistance.
Characteristic Data
(Typical values – not specifications)
|
Property |
Value |
Unit |
Test Method |
| Appearance | Colorless to yellowish transparent liquid | — | Visual |
| NCO content | 20.5 ± 0.5 | % | GB/T 12009.4-2016 |
| Viscosity | 5000 – 7000 | mPa·s | Brookfield LV, 63#/3 rpm,25 °C |
| Color (APHA) | < 80 | — | GB/T 1722-1992 |
| Monomeric isocyanate | ≤ 0.1 | % | GB/T 18446-2009 |
| Flash point | ~196 | °C | GB/T 5208 |
| Density | ~1.17 | g/cm³ | GB/T 4472-2011 |
Storage & Handling
The product should be stored in dry conditions above 5°C and below 35°C with the integrity of the packaging, and prevent direct sunlight. The validity of this product is for 12 months, performance assessment is recommended before use after shelf life. The product should be protected from freezing during storage. Water dispersible polyisocyanates are very moisture-sensitive and react with water to form carbon dioxide and insoluble ureas. The generation of carbon dioxide can lead to dangerous increases in pressure. The containers must always be kept tightly closed and the access of water in all forms must be prevented. It is suggested to use up once the package is open.
If you're ready to take the next step or Request Free Samples, Leave your message below and we’ll reply soon. 20+ years of chemical manufacturing & export experience, a partner you can trust.
Send product request
Other supplier products
 |
Epoxy-Polyester Thermosetting Electrostatic Spray Powder Coating | Product Overview Model: MT-062A Yellow powder coating Epoxy-polyester thermosetting electrostatic spray powder coating is a hybrid material combi... |
 |
Imitation Anodizing Coating Series | Key Features & Specifications FeatureSpecification / Benefit Anodizing-Like Matte Finish Replicates thesleek, low-gloss aesthetic ... |
 |
Hammertone Powder Coating | Introduction We are a leading powder coating manufacturer specializing in Hammertone Powder Coating with full customization services. Based in... |
 |
Radiator Powder Coating/powder coating powder cost | Main Features of Radiator Powder Coating Excellent leveling properties, with high gloss and high color saturation Exceptional adhesion Good dela... |
 |
Anti-graffiti powder coating | Brief description This series of products is based on saturated hydrocarbon polyester resin and isocyanate curing agent as the main base material,... |
Same products
 |
L-Cystine dihydrochloride Manufacturer | Seller: 846340 | Chemical Structure L‑cystine is formed by oxidative dimerization of two L‑cysteine molecules v... |
 |
L-Cystine dihydrochloride Supplier | Seller: 846340 | L-cysteine is a sulfur-containing non-essential amino acid, being the dimeric form of L-cysteine.... |
 |
L-Cystine dihydrochloride powder | Seller: 846340 | Main Applications ofL-Cystine dihydrochloride Cell Culture Media Essential supplement... |
 |
L-Cystine dihydrochloride 30925-07-6 | Seller: 846340 | Key Properties & Advantages ofL-Cystine dihydrochloride Solubility Boost Free L‑c... |
 |
L-Cystine dihydrochloride | Seller: 846340 | L‑Cystine dihydrochloride is the dihydrochloride salt form of L‑cystine, a sulfur‑containing amin... |
