Properties and Applications
Blocked polyisocyanate for the combination with suitable hydroxyl functional resins, like polyesters, acrylics and alkyd resins.
VESTANAT®B 1186 A enables the formulation of heat curing PUR coatings for curing temperatures of ≥ 150 ℃ with a low yellowing tendency during the curing process.
The use of tin-catalysts, e.g.dibutyl-tin-dilaurate(DBTDL) in oncentrations of 0.1-0.5% by wt. on solid resin, is recommended.
| Typical data | |||
| Non volatile matter | Value | Unit | Test method |
| Free NCO content | 60± 1 | % by wt. | DIN EN ISO 3251 (1,5 h 110 °℃, <2 hPa) |
| Viscosity at 23℃ | 1200±600 | mPas | DIN EN ISO 3219 |
| Free NCO content | < 0.1 | % by wt. | DIN EN ISO 11 909 ASTM D 2572 |
| Latent NCO content | approx. 7.1 | % by wt. | DIN EN ISO 11 909 (modified) |
| Splitting temperature | 150 | ℃ | - |
| Colour (Hazen) | ≤ 150 | mg Pt/l | DIN EN ISO 6271 |
Curing Conditions
The data in the following table were determined in a circulating air drying oven using aluminium panels with 0.8 mm thickness and a DBTDL concentration of 0.5 % calculated on solid resin (OH/NCO 1:1).
| System Stoving times in minutes at an oven temperature of | ||||
| 150℃ | 160℃ | 180℃ | 200℃ | |
VESTANAT® B 1186 A/ polyester (2.5-4.0%OH) | 30 | 20 | 5 | 3.5 |
| VESTANAT B 1186 A/arylate(2.5-4.0%OH) | 30 | 20 | 5.5 | 3.5 |
Storage and Packaging
VESTANAT B 1186 A can be stored in unopened containers for at least one year without loss of quality in accordance with the above specifications.
VESTANAT® B 1186 A is supplied in 25 kg non returnable cans and in 200 kg non returnable drums.
Safety and Handling
Please refer to our Material Safety Data Sheet.
