Optical Brightener Liquid For Paper

●GENERAL TYPE - APC: tetrasulphonic acid, having good fibre affinity, good stability to acid and alkali, good compatibility with starch.

Good performance in size press, Pigment coating mixture. Suitable for continuous adding process.

●DIRECT TYPE - APB-L: disulphonic acid, good fibre affinity , high whitening strength , small dosage, very economic but weak stability to acid and alkali.

Applicable in stock, size press and pigment coating mixture.

●SURFACE COATING TYPE - APH: hexasulphonic acid, weak fibre affinity, excenllent effect at low PH value,

especially suitable for coating and surface sizing, with greatest brightening effect the the paper at present.