Achieving the desired level of whiteness and brightness in materials like polyester fibers and plastics is a delicate balance that hinges on the correct application and dosage of optical brighteners. NINGBO INNO PHARMCHEM CO.,LTD, a leading supplier of specialty chemicals, emphasizes the importance of precise application for products such as Optical Brightener ER-I. Understanding these specifics ensures optimal performance and cost-effectiveness for manufacturers.

For textile applications, Optical Brightener ER-I is typically applied during the dyeing or finishing stages. The recommended dosage generally ranges from 0.02% to 0.08% based on the dry weight of the fabric. This range is considered effective for achieving a significant whitening effect by counteracting yellowness. Factors influencing the exact dosage include the type of polyester fiber, the processing conditions (temperature, pH), and the desired level of brightness. Higher temperatures, often employed in exhaustion dyeing processes for polyester, can enhance the diffusion and effectiveness of the brightener.

In the plastics industry, Optical Brightener ER-I is incorporated during the compounding or molding process. The optimal concentration in plastics, such as PE, PP, and PVC, usually falls between 0.05% and 0.5% by weight. This concentration can be adjusted based on the base polymer's yellowness, the processing temperature, and the desired aesthetic outcome. It’s crucial to ensure homogeneous dispersion of the OBA within the polymer matrix for uniform whitening. NINGBO INNO PHARMCHEM CO.,LTD provides high-purity ER-I to facilitate consistent dispersion and performance.

When selecting a supplier, it’s vital to order Optical Brightener ER-I from reputable sources like NINGBO INNO PHARMCHEM CO.,LTD to guarantee product quality and receive expert guidance on its application. Proper handling and storage are also key; the product should be kept in a cool, dry place away from direct sunlight to maintain its efficacy. By adhering to recommended dosages and application methods, manufacturers can effectively leverage the whitening capabilities of Optical Brightener ER-I to produce high-quality, visually appealing products that meet market expectations.