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.
在线联系供应商
Other supplier products
 |
Post-forming powder coatings | WA：+86 132 6275 2056 WEB: std-coatings.com Introduction Chemical Type: Epoxy/Polyester or Pure Polyester Appearance: Depends on specific prod... |
 |
Fire Pits & Stoves Powder Coatings | Introduction When it comes to fire pits, stoves, and other high-temperature appliances, the quality of the powder coating makes all the difference... |
 |
10-Undecenoic acid | WA：+86 132 6275 2056 |
 |
Wood Finish Powder Coating | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Introduction powder coating has provided a superior, durable, environmentally friendly... |
 |
Rim Powder Coating | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Aesthetic and Functional Excellence: The coating provides an aesthetically pleasing and... |
Same products
 |
Heat Sealing Sterilization Pouch | 卖方: Hopeway AMD | Heat Sealing Sterilization Pouch is designed for secure medical instrument packaging, supporting ... |
 |
Catalytic Converter Scrap Supplier, Catalytic Converter Scrap for Sale, , Catalytic Converter Scrap, Catalytic Scrap for Sale, Catalytic Scrap Supplier, Scrap Catalytic Supplier | 卖方: Trucont LLC | Trucont LLC 持续供应催化转化器废料，可立即装运发货。我们为全球各地的回收公司、金属加工商、汽车回收商、废料贸易商和买家提供优质的催化转化器废料。我们的催化转化器废料经过精心收集、分类... |
 |
Epimedium Extract | 卖方: Fruit Powder,Vegetable Powder | Product Name: Epimedium ExtractLatin Name: Epimedium Sagittatum Maxim.Specification: Icariin 5%, ... |
 |
Pumpkin Powder | 卖方: Fruit Powder,Vegetable Powder | Product Name: Pumpkin PowderLatin Name: Cucurbita pepo L.Used Part: FruitAppearance: yellow fine ... |
 |
Broccoli Powder | 卖方: Fruit Powder,Vegetable Powder | Product Name: Broccoli powder Latin Name: Brassica oleracea L.var.italic Planch. Used Part: Who... |
