In the world of polymer science and manufacturing, additives play a critical role in tailoring material properties to meet specific application demands. Among these, fluorescent brighteners are highly valued for their ability to impart superior visual characteristics. This article examines the function and benefits of Optical Brightener ER-I (CAS 13001-39-3) within the polymer industry, focusing on its application in enhancing the aesthetics of plastics like PE, PP, and PVC. We aim to guide R&D scientists and procurement specialists on why this product is a valuable addition and how to effectively buy it from a reliable manufacturer.

Optical Brightener ER-I is a type of fluorescent whitening agent (FWA) that operates by absorbing invisible ultraviolet light and re-emitting it as visible blue light. This emitted blue light compensates for the natural yellow tint often present in polymers, making the material appear whiter and brighter. The effect is not merely a surface coating; it is an intrinsic enhancement of the material's visual properties.

For polymer processors, the selection of an appropriate brightener is influenced by several factors, including compatibility with the base polymer, processing temperatures, and desired end-product appearance. Optical Brightener ER-I, with its chemical structure (C24H16N2) and specified purity of ≥99%, demonstrates excellent performance in common plastics such as PE, PP, and PVC. Its stability at typical processing temperatures ensures that the brightening effect is maintained throughout the manufacturing cycle, from extrusion to injection molding.

The efficacy of Optical Brightener ER-I is evident in its ability to provide a significant boost in whiteness and brightness even at low concentrations, typically in the range of 0.02% to 0.08% by weight. This cost-effectiveness, combined with its performance, makes it an attractive option for manufacturers looking to upgrade their product's visual appeal. As a trusted supplier in China, we emphasize the importance of these technical details for buyers.

Furthermore, the good fastness properties of Optical Brightener ER-I, including its resistance to sublimation, ensure that the enhanced whiteness is durable. This is crucial for plastic products intended for long-term use or exposure to various environmental conditions. When considering purchasing this additive, partnering with a manufacturer like NINGBO INNO PHARMCHEM CO.,LTD. guarantees consistent quality and a reliable supply chain.

We encourage polymer scientists and procurement managers to explore the benefits of Optical Brightener ER-I for their product lines. Understanding its application and sourcing it from a reputable manufacturer like ourselves can provide a distinct competitive advantage. Please contact us to discuss your specific needs, obtain technical data, and inquire about purchasing options and pricing for this high-performance polymer additive.