Covestro Bayhydur 401-70 hydrophilic modified IPDI polyisocyanate, fast drying, chemical resistance
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Type |
Based on isophorone diisocyanate (IPDI) hydrophilic modified aliphatic polyisocyanate |
|
Supply form |
The ratio is 1:1 Propylene glycol methyl ether acetate/ The concentration of xylene is about 70% |
|
Purpose |
As a co-reactant for water-based resins and a curing agent for preparing chemical-resistant and weather-resistant coatings |
Product Specifications
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Features |
Value |
Measurement units |
Method |
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NCOContent |
9.4±0.5 |
% |
Value |
Measurement units |
Method |
|
Equivalent |
about440 |
|
|
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Flashpoint |
about40 |
°C |
DIN 55 213/1 |
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Density@20°C |
about1. 07 |
g/cm3 |
DIN 53 217/3 |
Solubility/Dilution
Normally , Bayhydur 401-70 has good compatibility with the solvents listed, but the storage stability of the prepared solutions must be checked. Bayhydur 401-70 can be fully dissolved and diluted in aromatic hydrocarbons, even without adding polar solvents such as esters, ketones and ether esters (such as ethylene glycol butyl ether acetate and diethylene glycol butyl ether acetate). . The product can be diluted to a stable solution with a minimum solids content of 20%, for example with xylene, toluene or higher boiling aromatic compounds such as solvent naphtha 100 or a mixture of aromatic compounds. The stability of the solution needs to be tested at any time. If a longer storage period is required, aliphatic solvents cannot be added during dilution. However, Bayhydur 401-70 has some compatibility with aliphatic solvents added to coatings. Only use polyurethane grade solvents (water content less than 0.05%). The solvent cannot contain reactive groups such as hydroxyl or amino groups.
Compatibility
Normally , Bayhydur 401-70 can be mixed with all grades of Desmodur®, Bayhydur and Bayhydrol® products. However, the compatibility of the entire formula (including solid content, co-solvent content, and co-solvent type) must be tested. Bayhydur 401-70 can be mixed with Desmodur® N 3300, N 3600, Bayhydur 3100, most Bayhydrol® products such as Bayhydrol A 145, A 242, LS 2058 and LS 2231.
Features/Applications
Bayhydur401 -70 is primarily used as a co-reactant for the water-based polyol base in Bayhydrol® products. Due to its hydrophilic nature, Bayhydur 401-70 emulsifies easily in the aqueous phase. The addition of Bayhydur 401-70 improves the properties of waterborne two-component polyurethane coatings (eg chemical or solvent resistance).
Save
This product is sensitive to moisture and should be stored in the original closed container , and the temperature does not exceed 30 ℃. When stored under appropriate conditions, this product has a shelf life of at least 6 months. However, the viscosity may increase slightly.
Diethylene glycol butyl ether acetate). The product can be diluted to a stable solution with a minimum solids content of 20%, for example with xylene, toluene or higher boiling aromatic compounds such as solvent naphtha 100 or a mixture of aromatic compounds. The stability of the solution needs to be tested at any time. If a longer storage period is required, aliphatic solvents cannot be added during dilution. However, Bayhydur 401-70 has some compatibility with aliphatic solvents added to coatings. Only use polyurethane grade solvents (water content less than 0.05%). The solvent cannot contain reactive groups such as hydroxyl or amino groups.
Compatibility
Normally , Bayhydur 401-70 can be mixed with all grades of Desmodur®, Bayhydur and Bayhydrol® products. However, the compatibility of the entire formula (including solid content, co-solvent content, and co-solvent type) must be tested. Bayhydur 401-70 can be mixed with Desmodur® N 3300, N 3600, Bayhydur 3100, most Bayhydrol® products such as Bayhydrol A 145, A 242, LS 2058 and LS 2231.
Features/Applications
Bayhydur401 -70 is primarily used as a co-reactant for the water-based polyol base in Bayhydrol® products. Due to its hydrophilic nature, Bayhydur 401-70 emulsifies easily in the aqueous phase. The addition of Bayhydur 401-70 improves the properties of waterborne two-component polyurethane coatings (eg chemical or solvent resistance).
Save
This product is sensitive to moisture and should be stored in the original closed container , and the temperature does not exceed 30 ℃. When stored under appropriate conditions, this product has a shelf life of at least 6 months. However, the viscosity may increase slightly.