For textile manufacturers striving for impeccable white finishes, the proper integration of optical brightening agents is essential. Optical Brightening Agent BAC-H stands out for its effectiveness on acrylic fibers and its stability in common textile treatments. This guide, from a trusted Chinese supplier, provides practical insights for effectively using BAC-H in your operations.

Optical Brightening Agent BAC-H is a benzimidazole derivative designed to enhance the whiteness and brightness of textile fibers. Its primary advantage is its cationic nature, which ensures excellent adherence to acrylic and secondary acetate fibers, delivering a consistent bluish-violet white shade. Its stability, especially under chlorite bleaching conditions, makes it a versatile choice for various finishing processes.

Successful application hinges on adhering to specific process parameters. For general textile brightening, the recommended dosage for BAC-H typically ranges from 0.2% to 1.5% based on the weight of the fiber (o.w.f.). This dosage can be adjusted based on the desired level of whiteness and the specific fiber characteristics. It is crucial to ensure the dyeing liquor pH is maintained within an acidic range, generally between 3.0 and 4.0. This is often achieved by using weak organic acids like oxalic acid dihydrate or formic acid.

The temperature is another critical factor. The process is typically carried out at elevated temperatures, usually between 90°C and 98°C, to facilitate the absorption of the brightener into the fiber. The duration of this process is also important, with recommendations usually falling between 40 to 60 minutes to allow for thorough penetration and fixation of the agent. These conditions help to maximize the fluorescent effect and ensure a durable white finish.

For textile manufacturers looking to buy optical brightening agents, sourcing from reliable suppliers in China, like ourselves, offers both quality assurance and competitive pricing. We provide high-quality Optical Brightening Agent BAC-H with detailed technical specifications to support your production needs. By carefully controlling the dosage, pH, and temperature during application, you can leverage the full potential of BAC-H to achieve superior whiteness and brightness in your textile products, enhancing their market appeal.