Styrene butadiene latex, commonly known as SBR latex, plays a crucial role in the paper coating industry. It stands as a cornerstone component within synthetic latex, constituting approximately 20% of synthetic rubber output and an impressive 80% of synthetic latex production. Its predominant application lies in paper coating, where it serves as a vital binder for pigments, often complemented by natural adhesives such as starch. Despite its relatively small proportion within coatings—roughly 10% by weight and 20% by volume—SBR latex exerts a substantial influence on both coating and printing adaptability.

The primary function of SBR latex in paper coating revolves around enhancing the surface strength of coated paper to withstand printing. It's widely understood that during the coating drying process, SBR latex particles within the coating interact with water's surface tension, migrating alongside water movement and ultimately congregating at pigment contact points. Thus, to effectively fulfill its role as a binder, SBR latex particles must achieve independent and stable dispersion within the coating water phase.

SBR latex serves additional roles, improving adhesion and water resistance while also delaying the absorption of printing ink and moisture. By occupying the spaces between pigments, it organizes pigment orientation and reduces coating layer permeability.

To maximize SBR latex's multifunctionality and performance, the introduction of functional monomers for modification is essential. Among these, the incorporation of unsaturated carboxylic acid stands as a common practice, greatly enhancing mechanical and viscosity stability of paints, thereby improving coating adaptability and the strength of coated paper. Currently, highly functionalized SBR latex manifests in various aspects, including the elimination of printing defects, exceptional print gloss, reduced adhesive requirements, enhanced strength performance, excellent coverage even with minimal coating, and compatibility with high-speed, high-solid-content coating processes.

At QINGDAO JIERUIXIN INDUSTRIES CO LTD, we boast decades of specialization in the paper coating sector. With our dedicated team of chemists designing exclusive formulas for clients worldwide, coupled with extensive experience in establishing paper coating machine lines and supplying chemicals, we stand as the premier source for comprehensive support in the paper coating industry—from materials to machinery and chemicals. We invite inquiries and encourage you to experience our excellent service and top-quality products firsthand.