Alkyd Silicon Varnish 580Si52N(X)
Technical Specifications У 24.3-24010285-003:2007
Alkyd Silicon Varnish 580Si52N(X) is a solution of alkyd modified by free fatty acids and silicon resin in organic solvents (white spirit, dearomatic white spirit D or their mixture with xylene).
Application: it shall be used in the formulations of high quality heat-resistant (up to 150°C) atmosphere resistant and chemical resistant enamels, as well as in compositions for hydrophobic protection of wood, stone and concrete.
Table: Qualitative indices according to Technical Specification У 24.3-24010285-003:2007
| № | Description | Requirements as to Technical Documentation | |
| superior quality | first quality | ||
| 1 | Colour (iodimetry scale), mg I2/100 cm3, not darker than | 30 | 80 |
| 2 | Appearance | Transparent, some opalescence is allowed | |
| 3 | Purity | Varnish coat, applied on glass plate, shall be transparent without any mechanical inclusions and small extrinsic particles | Individual mechanical inclusions are allowed |
| 4 | Relative viscosity at temperature /20±0.5/°С (viscosimeter ВЗ-246, nozzle diameter 4 mm), с | 140 – 240 | 140 – 240 |
| 5 | Weight fraction of nonvolatile matter, % | 53 ± 2 | 53 ± 2 |
| 6 | Acid value, mg, КОN/g, max. | 12 | 12 |
| 7 | Hardness of varnish film as to pendulum ТМЛ (type А), standard units, min. | 0.20 | 0.20 |
| 8 | Drying time to the point of 3, hours, at temperature (20±2) °С | 8 | 8 |
