Water-dispersible isocyanate curing agent STD 268
Introduction
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.
在线联系供应商
Other supplier products
 |
Polyester Resin / TGIC System Powder Coating | 1. Resin-Based Powder Coating Comparison Comprehensive overview of resin systems tailored for engineering decision-makers and professional buyers.... |
 |
Polyester Powder Coatings – Full Product Range | We provide a comprehensive range of polyester powder coatings for various industrial applications. Our coatings are factory-direct from China, wit... |
 |
Soft Starry Grey powder coating | Product Features With a special skin feel formula, the surface of the coating after powder solidification has a touch similar to that of the skin,... |
 |
Polyester Powder Coatings – Full Product Range | Introduction We provide a comprehensive range of polyester powder coatings for various industrial applications. Our coatings are factory-direct f... |
 |
PVC Powder Coating for Furniture Decoration | We offer a full range of PVC (Polyvinyl Chloride) powder coatings, tailored for furniture, construction, electrical insulation, chemical protection... |
Same products
 |
High Concentration Plastic Color Masterbatch Factory Direct Supply | 卖方: 861445 | We are a professional color masterbatch manufacturer with years of R&D experience in plastic ... |
 |
Acid Ink Blue G Factory | 卖方: TIANJIN LEADING IMPORT & EXPORT CO., LTD | Acid Ink Blue G Factory 【Application of Acid Ink Blue G 】 mainly used for making blue or ... |
 |
Acid Black ATT Factory | 卖方: TIANJIN LEADING IMPORT & EXPORT CO., LTD | Acid Black ATT Factory 【What’s Acid Black ATT】 is made of acid black 10B and acid o... |
 |
Acid Black 10B Factory | 卖方: TIANJIN LEADING IMPORT & EXPORT CO., LTD | Acid Black 10B Factory is mainly suitable for dyeing and printing wool ,silk and nylon fabri... |
 |
Sulphur Dyes | 卖方: TIANJIN LEADING IMPORT & EXPORT CO., LTD | Sulphur Dyes BuyDye supplies a range of sulphur dyes for cotton-based textile dyeing, includ... |
