Bayhydur-waterborne PU curing agent

Covestro Bayhydur XP 2487/1 Waterborne PU Hardener Excellent chemical resistance

type	Hydrophilic aliphatic polyisocyanates based on hexamethylene diisocyanate (HDI)
form of supply	100%
use	As a hardener component in waterborne two-component polyurethane coating systems

Product Specifications*

characteristic	Numerical value	Units of measurement	method
NCO content	about 20.6	%	DIN EN ISO 11 909
Viscosity, 23°C	about 5400	mPa·s	DIN EN ISO 3219
Hazen color value	≤100		DIN EN 1557
Isocyanate monomer content	<0.15	% by weight	DIN 55 956

*The above values are provisional values. The product specifications that should be followed are subject to the final published information.

other data**

characteristic	Numerical value	Units of measurement	method
density	about 1.16	g/cm3	DIN 51 757
Flash point	约212	°C	DIN EN ISO 2719

**The above values are general information.

Solubility / dilution
In general, Bayhydur® XP 2487/1 is compatible with organic solvents such as esters, ether esters, xylenes and solvent naphtha #100. However, solubility and compatibility must be checked each time. Polyurethane grade solvents (less than 0.05 % moisture) should be used.

Features/Applications
Bayhydur® XP 2487/1 is a crosslinker for aqueous systems where good crosslinking and high chemical resistance are required. It is quite suitable to be mixed with OH group-containing dispersions such as Bayhydrol® A145, A 242, Bayhydrol® XP 2427, XP2469, XP2470, VP LS 2139/2 and VP LS 2290.

store
This product is sensitive to moisture and should therefore be stored in an airtight container. This product has a shelf life of at least 6 months when stored in its original airtight container. During storage, however, the viscosity will increase slightly.

Safety: Hazard Identification
This product contains isocyanates, which may cause allergies in contact with the skin. The Safety Data Sheet (493280) should be read carefully. It includes information on labelling, transportation and storage, as well as information on product use, product safety and ecology.
Note that this product is an experimental product and has not yet gained extensive experience. Therefore, the manufacturer makes no guarantees regarding the performance of the product in operation and use.