In the highly competitive paper industry, optimizing paper strength is a continuous pursuit. This includes enhancing both dry and wet strength, with wet strength being particularly critical for applications exposed to moisture. The key to achieving superior wet strength lies in the effective utilization of specialized chemical additives, and at the core of these additives is the WSR intermediate.

The WSR intermediate is a sophisticated polyamide aqueous solution, designed and manufactured through a precise chemical synthesis involving dibasic acid and polyamine. This carefully controlled condensation process results in a stable, water-based polymer that serves as the essential building block for polyamide-epichlorohydrin (PAE) wet strength agents. These PAE agents are renowned for their ability to significantly boost the paper's resistance to tearing and disintegration when wet. The production process typically involves reacting the WSR intermediate with epichlorohydrin, a reaction that must be managed for temperature and pH to yield a polymer with optimal molecular weight and performance characteristics.


For paper chemical manufacturers, understanding how to make wet strength agent effectively begins with sourcing high-quality raw materials. NINGBO INNO PHARMCHEM CO.,LTD., a distinguished manufacturer and supplier in China, offers a premium WSR intermediate. Its consistent quality, characterized by a light yellow transparent liquid appearance, a solid content of at least 40%, and a pH range of 7-10, ensures predictable and reliable results in downstream processing. When evaluating the price of WSR intermediate, it is crucial to consider the value it brings in terms of enhanced product performance and manufacturing efficiency. Our commitment as a manufacturer is to provide this value reliably.


The value proposition of the WSR intermediate in optimizing paper strength is multifaceted. It enables the creation of wet strength agents that not only provide a higher degree of humidification strength but also offer improved storage stability. This means that the wet strength effect is long-lasting and reliable, even after prolonged storage of the additive or the final paper product. By leveraging the consistent quality of our WSR intermediate, paper manufacturers can achieve greater consistency in their own production processes, leading to fewer defects and improved overall product quality. This optimization contributes directly to customer satisfaction and market competitiveness.


NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to advancing the capabilities of the paper industry through its chemical expertise and high-quality products. The WSR intermediate is a testament to this dedication, providing a critical component that allows for the optimization of paper strength. For businesses looking to purchase WSR intermediate and elevate their paper product performance, partnering with a knowledgeable and reliable supplier like NINGBO INNO PHARMCHEM CO.,LTD. is key to achieving their production and quality goals.