Product Features
- High functionality, low viscosity.
- Easy to disperse, free of VOCs.
- Long open time.
Hydrophilically Modified Isocyanate Curing Agent CR-G120
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Product Introduction
CR-G120 is a hydrophilically modified isocyanate curing agent designed for waterborne two-component polyurethane systems. It features high functionality, low viscosity, high isocyanate content, and fast curing speed. When combined with waterborne polyurethane resins or waterborne acrylic resins, it significantly improves bonding strength, heat resistance, and hydrolysis resistance of bonded products. It is suitable for printing, leather finishing, automotive interior adhesives, shoe adhesives, vacuum lamination adhesives, and other applications.
Solvents may be added for dilution; urethane-grade solvents are recommended. Conduct specific tests before use.
Product Technical Parameters*
Item Parameter Unit Test Method Appearance Colorless to pale yellow clear liquid — GB/T 14074.1-1993 Solid Content 100 % GB/T 2793-1995 Viscosity (25℃) 700–2000 mPa·s GB/T 10247-1998 Color Number ＜60 — GB/T 1722-1992 Density 1.16 g/cm³ GB/T 4472-2011 NCO Content 20.5±1.0 % GB 12009.4-2016 Free HDI ＜0.2 % GB/T 18446-2009 *The above parameters represent typical results only and shall not be regarded as specifications. Refer to the actual COA for details.
Recommended Dosage
Recommended addition level: 3.0–5.0%. Use up within 8 hours at 25℃.
Solubility / Dilutability
Generally compatible with esters, ether esters, xylene, and Naphtha No.100. Test solubility and compatibility for each solvent. Only urethane-grade solvents are allowed. Water content must not exceed 0.05%.
Properties / Applications
A crosslinker suitable for waterborne systems requiring good bond stability and chemical resistance. Despite moderate hydrophilicity, it emulsifies readily in water even under low shear common in industry. Coatings formulated with this product produce high-gloss, low-haze films.
When mixed with hydrophilic curing agents (especially ionic hydrophilic polyol dispersions), pre-dilute with water or add small amounts of organic co-solvents to control viscosity rise. Balanced moderate hydrophilicity and high functionality enable fast drying and rapid hardening of waterborne two-component polyurethane coatings, delivering high final hardness and excellent chemical resistance.
Storage
- Store in a dark, cool, dry place at 5–35℃; keep sealed and intact.
- Shelf life: 12 months from production date. Evaluate performance before use if expired.
- Protect from freezing. Water-dispersible isocyanate curing agents are highly sensitive to moisture; reaction with water produces CO₂ and urea, which may pressurize the container and cause hazards.
- Keep containers tightly sealed to prevent moisture ingress. Use promptly after opening.
Prolonged storage at low temperatures may cause irreversible damage. Keep containers sealed; otherwise, water evaporation forms an insoluble polymer film on the surface. Shelf Life
Use within 12 months from production date.
Expiration of the 12-month shelf life does not mean the product is out of specification. Test before use to verify compliance with specifications and technical parameters. The above information only represents our laboratory quality evaluation results and does not guarantee the product’s performance or suitability for specific applications. Please conduct necessary tests before use. Thank you for your choice and support! 
FAQ
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Is customization available upon request?
Yes, customized service is available.