Applications
Finish for polyurethane coatingsImpranil® 43031 solution is used alone, in combination with Impranil ELH-A/1 as a topcoat.When thinned accordingly, Impranil® 43031 solution is equally well-suited for use as a screening and spray finish.
Form supplied
Approx. 25 % solution in isopropanol/toluene/1-methoxypropanol-2
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Viscosity* at 23 °C | 7,000 - 15,000 | mPa*s | DIN EN ISO 3219/A.3 | |
| Non-volatile content | (0.9 –1.1 g / 1 h / 125 °C, convection oven) | 25 ± 1 | % | DIN EN ISO 3251 |
Storage
- Storage in original sealed Covestro container. - Recommended storage temperature: 5-30 °C. - Protect from moisture, heat and foreign material.
Storage time
Covestro represents that, for a period of twelve months following the day of shipment as stated in the respective transport documents, the product will meet the specifications or values set forth in section "specifications or characteristic data" above, what ever is applicable, provided that the product is stored in full compliance with the storage conditions set forth in and referenced under section "storage" above and is otherwise handled appropriately. The lapse of the twelve months period does not necessarily mean that the product no longer meets specifications or the set values. However, prior to using said product, Covestro recommends to test such a product if it still meets the specifications or the set values. Covestro does not make any representation regarding the product after the lapse of the twelve months period and Covestro shall not be responsible or liable in any way for the product failing to meet specifications or the set values after the lapse of the twelve months period.
Processing
ThinningImpranil® 43031 solution can be thinned with solvent mixtures of aromatic hydrocarbons and alcohols to the desired brush viscosity.Suitable solvents are: toluene or mixtures of toluene/isopropanol toluene/isopropanol/1-methoxypropanol-2 and dimethylformamideIn no case should the content of aromatic hydrocarbons in the overall solvent mixture be less than 33 %, nor should the content of alcohols exceed 67 %.MixturesThe surface finish and handle of the coating can be varied by mixing Impranil® 43031 solution with Impranil ELH-A/1 solution.This mixtures also result in improved bending fracture strength. The mixtures do not significantly alter the softening range and plasticizer swelling of Impranil® 43031 solution.
Film properties
The data given below are average values measured in approx. 0.1 mm transparent films of Impranil® 43031 solution. The volume swelling decreases again as the solvent evaporates. *These values provide general information and are not part of the product specification.
