Water Dispersible Isocyanate Curing Agent Std 268 - China

Product Description

STD 268 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 STD 268, 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.

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Company Contact:

• Posted By: Standard International Group (HK) Limited

• Phone: +86-21-64208466-808

• Address: Floor 2, #47 Building, 280 Jiugan Road, Songjiang district, Shanghai, China, Shanghai , Shanghai , China

• Email:

• Website: https://moutainchem.com/

• Business Description: Standard International Group (HK) Limited was founded in 2003 - Over years, Standard Group has established long-term strategic cooperative relations with many well-known industrial chemical manufacturers, such as Sherwin-Williams, LANXESS, Evonik, Covestro, Elementis and so on, thus ensuring that customers can receive consistent high-quality services.
  
  Years of professional accumulation make us not only provide high-quality industrial coating additives, but also medicine Pharmaceutical Intermediates and electronic chemistry.
  
  From the painting plant laboratory first sample testing, middle-testing and final-testing, we adhere to the professional, sincere, enthusiastic and efficient service concept, our technical team always adjust the sample during different testing process until it performs perfect chemical reaction at customer’s paints.