DESCRIPTION
XC-205 is a type of aziridine blocked isocyanate crosslinker, it is different with the normal blocked isocyanates, it is not reactive by NCO from unblocking as the normal isocyanates, in fact, it is reactive by the aziridine cycle-opening; Commercial XC-205 product is a water-dispersible liquid used as dying additive for improving bonding strength of various adhesives; it also can be used in various fields when strong bonding effect is required in the basic system of acrylic and polyurethane water-borne resins; XC-205 powder is also used in the system of powder resin, this crosslinker does not contain formaldehyde.
SPECIFICATION
Type: blocked isocyanate crosslinker
Appearance: white water-dispersible liquid
Total Solid (w/w ): 32.0%
CAS No.: NV.
Viscosity, at 25°C: <300cps
PH at 25°C: 9-10
Specific Gravity at 25°C: 1.05-1.1g/ml
Reactive Temperature (°C)>130
APPLICATIONAS
In the system water based printed paste, can improve the abrasion resistance and gloss finish, not formaldehyde appear;
In water based acrylic resin and polyurethane latex, increase cohesive strength after heat treatment;
In any water based latex containing –COOH, -OH, -NH2, improves the resin strength and abrasion resistance, after dry and heat treatment;
In water based cotton & terylene latex, increases water and oil resistance;
In vinyl coatings to reduce plasticizer migration and improve stain resistance;
In water based concrete sealers to improve abrasion resistance
Generally, in any water based resins, improve the water, detergent, solvent, chemical resistance and abrasion resistance, after heat treatment formulation.
TYPICAL APPLICATION AS CROSSLINKER
Method of Addition: XC-205 is added slowly and with good agitation, directly to the formulated coating system which the PH value must be controlled between 8-10, avoid to use in acidic medium;
Addition Levels. The level of XC-205 to add to the formulated system will depend on the coating system and the desired properties of the coating film. Most applications find use levels between 1% and 3% based on total resin amount. Higher levels, such as 5%, may yield higher solvent resistance and adhesion properties;
CONTAINER INFORMATION & STORAGE CONDITIONS
Available in 25kg or 200Kg plastic drums and 4´5kg plastic drums; Store in room place with adequate ventilation; pot life is about 12-18 months. |
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