The dispersion is a styrene‑acrylic / SBR blend with polymer solids of 45‑50 % and a viscosity of 7‑9 cP at 25 °C. The dispersion is produced by an emulsion polymerization route in which styrene and acrylic monomers co‑polymerize to form a flexible polymer matrix, while the SBR (styrene‑butadiene rubber) phase introduces elasticity and improves resistance to mechanical stress. The resulting polymer particles are typically in the sub‑micron range (0.1‑0.5 µm), which enables a uniform coating of the cellulose fibers and promotes strong inter‑fiber bonding. This chemistry is especially valuable in sheet‑bonding operations, where the dispersion is added at 0.5‑2 % of the dry pulp weight, delivering a roughly 15 % increase in tensile strength and a noticeable reduction in drying energy consumption. In practice the dispersion is mixed with lime‑based or starch‑based binders; the lime component provides rapid setting and rigidity, while starch contributes film‑forming ability and additional water resistance. The combined system yields a durable, water‑resistant coating that is widely used for packaging boards, corrugated cardboard, and specialty papers such as cigarette paper. Typical industrial applications include coating lines for glossy or matte finishes, adhesive stations for multi‑layer board assembly, and surface treatment of paperboard used in food‑grade packaging where barrier properties are critical. Storage requirements are a dry, ventilated area at 5‑30 °C, protected from direct sunlight and strong oxidizers. When shipped in sealed drums or containers the properties remain stable for up to 12 months. The optimal pH of the dispersion is 7.5 ± 0.2, allowing use across a wide temperature range of 20‑60 °C without precipitation. It is compatible with lime and starch binders, simplifying integration into existing formulations.
| Тип | Стиролакриловая / SBR |
| Тв. вещество | 45–50% |
| pH | 7–9 |
IBC 1000 kg
The paper‑production dispersion should be stored in a dry, well‑ventilated area at temperatures between 15 °C and 25 °C, protected from direct sunlight and extreme temperature fluctuations. Typical shelf life is 12–24 months when stored under these conditions; the product should be used within the indicated period after opening. During handling, wear protective gloves and safety glasses, avoid skin contact and inhalation of vapors. Keep the packaging tightly sealed, and replace any containers that show signs of damage.
