The amount of fluorescent whitening agent is often expressed as a percentage relative to the mass of products.
The properties of the agent or other additives are related. The dosage of fluorescent whitening agent is generally 0.05% to 0.1% (for product weight), for ultra white varieties, the dosage can reach 0.5% (for goods weight) or more;
For transparent plastic, its dosage is 1/100 to 1/10 of the above dosage. The appropriate dosage should be determine through small sample experiments that the principle is to meet application requirements, rather than under certain circumstances
The more amount of fluorescent whitening agent used, the better the whitening effect, but there is a certain concentration limit, exceeding
beyond a certain limit, not only there will be no whitening effect, but also there may even be yellowing.
Too high amount of fluorescent whitening agent will also cause immiscibility, migration and degradation of anti-aging low-level performance
Using a combination of two or more different fluorescent whitening agents, if chosen appropriately, will result in good result.
thus the fluorescence spectrum widens, its fluorescence intensity enhances, achieving the goal of enhancing efficiency while improving its application performance.
