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|