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OB and KCB are excellent whitening agents. Some customers who make shoe materials ask us, why do you recommend KCB instead of OB for EVA foamed shoe materials?
Fluorescent whitening agents OB and KCB are both star products in the field of whitening agents, but there are also differences between them. First of all, KCB is blue-violet light, OB is blue light, and KCB's blue light intensity is better, so KCB's whitening effect will be better; Secondly, the compatibility of KCB will be slightly stronger than that of OB; Finally, the key point is that KCB does not react with foaming agent.
See here, everyone should know why EVA foamed shoe material is more suitable for fluorescent whitening agent KCB.
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