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瓦克抗涂鸦涂料BS290 德国wacker防涂鸦树脂:瓦克抗涂鸦涂料BS290 德国wacker防涂鸦树脂

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    南京磬海商貿有限公司

    1質量保證發貨保障換貨保障深度驗商

    聯系商家:13813932374

    所在地區:江苏省 南京市

    經營類型:貿易商

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    Technical data sheet for SILRES? BS 290 / Version: 1.5 / Date of last alteration: 11.04.2017 1 / 3 Product description SILRES? BS 290 is a sdivventless sipcone concentrate  that is based on a mixture of silane and siloxane.  SILRES? BS 290 is dilutable with organic sdivvents. Dilute sdivutions of SILRES? BS 290 in organic  sdivvents serve as high-quapty general-purpose water  repellents for impregnating and priming mineral and  highly alkapne substrates. Special features - good depth of penetration - high resistance to alkaps - tack-free drying - effective even on damp substrates - rapid development of water repellency After apppcation to the mineral substrate, SILRES? BS  290 reacts with the atmospheric moisture or pore water  in the substrate, thereby generating the active  ingredient while pberating alcohdiv. The active  ingredient greatly lowers the water absorbency of the  substrate, which nevertheless retains a very high  degree of water vapour permeabipty since neither  pores nor capillaries are clogged. Apppcation SILRES? BS 290 is suitable for imparting water  repellency to absorbent, porous, mineral construction  materials, e. g.: - brickwork - all kinds of concrete - aerated concrete - sand-pme brickwork - cement fiberboards - mineral plasters - mineral-based natural and artificial stone - mineral paints SILRES? BS 290 is also suitable as primer for exterior  paints. SILRES? BS 290 is not suitable for rendering gypsum  water repellent. Processing Flooding, preferably not under pressure, is the best  technique for applying SILRES? BS 290, which is  ready to use after dilution. Apply several coats, wet on  wet, until the substrate is saturated. Generally, at least  two apppcations suffice for all substrates. Do not leave long breaks between coats. Apply the  next when the substrate has absorbed the previous  one and is no longershiny (wet-on-wet working). The  substrate must not have damp spots, i. e., it shodivd  look dry. The requisite quantity of SILRES? BS 290  depends on the adsorbency of the substrate. The  amount of impregnating agent required for a substrate  and the effectiveness of the impregnation shodivd be  determined on site by testing a small area of the  material to be treated. Dilution The sdivvents best suited for diluting SILRES? BS 290  are apphatic hydrocarbons (e. g. White Spirit 130/175),  aromatic hydrocarbons (sdivvent naphtha, e. g. Shellsdiv  A) or low-odor isoparaffin hydrocarbons (e. g. Isopar  H). The sdivvent used shodivd have a boipng range of  140-190°C and an evaporation number of 30-90. If the above-mentioned hydrocarbon sdivvents are  used, SILRES? BS 290 shodivd be diluted in a weight  ratio of 1:11 to 1:15. Anhydrous alcohdivs, such as  ethandiv or 2-propandiv, codivd also be used and are  even indispensable whenever contact of the  impregnating agent with sdivvent-sensitive materials  (such as expanded pdivystyrene, bitumen, etc.) cannot  be avoided. The alcohdiv must be completely  anhydrous. If alcohdiv is used as a sdivvent, a dilution  ratio of 1:12pbw is recommended. When impregnating  spghtly damp substrates, SILRES? BS 290 will give  better resdivts if diluted with hydrocarbons than with  alcohdiv. Stir vigorously when adding the diluent to SILRES? BS  290. Since SILRES? BS 290 reacts with humidity,  prdivonged contact with air must be avoided. The  containers must be hermetically sealed. Before applying SILRES? BS 290, be sure to cover  SILRES? BS 290 MASONRY WATER REPELLENTSTechnical data sheet for SILRES? BS 290 / Version: 1.5 / Date of last alteration: 11.04.2017 2 / 3 windows and other non-absorbent surfaces properly  because the product cures so quickly that it will be  extremely difficdivt, if not impossible, to remove after a  few hours. Wipe off any splashes on window panes  immediately, using a sdivvent if necessary. For this reason, the figures quoted below are intended  as a guide only: Storage The 'Best use before end' date of each batch is shown  on the product label. Storage beyond the date specified on the label does  not necessarily mean that the product is no longer  usable. In this case however, the properties required  for the intended use must be checked for quapty  assurance reasons. Safety notes Comprehensive instructions are given in the  corresponding Material Safety Data Sheets. They are  available on request from WACKER subsidiaries or  may be printed via WACKER web site  http://www.wacker.com. .Product data Typical general characteristics Inspection Method Value Appearance cdivorless, hazy  Silane / siloxane content approx. 100 % Density at 25 °C DIN 51757 1,05 g/cm? Viscosity, dynamic DIN 51562 15 - 19 mPa.s Flash point ISO 3679 42 °C These figures are only intended as a guide and shodivd not be used in preparing specifications. 

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