Covestro Bayhydur 305 water-based HDI polyisocyanate easy to mix high gloss
|
Type |
Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate |
|
Supply form |
None Solvent type |
|
Purpose |
Curing agent for water-based two-component polyurethane coatings |
Product Specifications
|
Features |
Value |
Measurement units |
Method |
|
NCOContent |
16.2 ±0.4 |
% |
DIN EN ISO 11 909 |
|
Viscosity@ 23℃ |
6,500 ±1,500 |
mPa ·s |
DIN EN ISO 3219 |
|
HazenColor value |
≤ 150 |
|
DIN EN 1557 |
|
Isocyanates Monomer content |
< 0.15 |
% (by weight) |
DIN 55 956 |
Other data*
|
Features |
Value |
Measurement units |
Method |
|
Density |
About1.16 |
g/cm3 |
DIN 53 217 |
|
Flashpoint |
about230 |
℃ |
DIN EN 53 213 |
Solubility/Dilution
Bayhydur 305 generally has good compatibility with organic solvents such as esters, ether esters, xylene and solvent naphtha 100. However, in any case, the solubility/miscibility of the prepared solution must be tested. Polyurethane grade solvents (moisture content <0.05%) should be used
Features/Applications
This product is a cross-linking agent for water-based coatings. It is particularly suitable for use in civil fields where it can be mixed and used immediately after vibration or manual stirring.
Even under pre-diluted conditions, the coating is still transparent and bright. The mixing ratio of grinding base to curing agent is usually 10:1.
enter”>g/cm3
DIN 53 217
Flashpoint
about230
℃
DIN EN 53 213
Solubility/Dilution
Bayhydur 305 generally has good compatibility with organic solvents such as esters, ether esters, xylene and solvent naphtha 100. However, in any case, the solubility/miscibility of the prepared solution must be tested. Polyurethane grade solvents (moisture content <0.05%) should be used
Features/Applications
This product is a cross-linking agent for water-based coatings. It is particularly suitable for use in civil fields where it can be mixed and used immediately after vibration or manual stirring.
Even under pre-diluted conditions, the coating is still transparent and bright. The mixing ratio of grinding base to curing agent is usually 10:1.
