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3.especially suitable for high temperature molding of plastic products whitening. recommended dosage. add jinan credit chemicals optical brightener 4bk for textile cotton fabric to every 100kg of material: 1. eva, polypropylene, nylon, polycarbonate and other added in 5 ~ 20g. 2.the amount of polyester fiber added in 10g ~ 40g.

Brightener brightening agent fabric brightening agent manufacturer optical brightener 4bk optical brightening agent 4bk whitening agent for cotton fabric us $3.00$3.50 / kilogram

The whitening effect of optical brightener agent could be estimated by visual method which better under the sunlight or measure by colorimeter. 3.light fastness there is no international standard for testing optical brightener lightfastness in plastics.most tests used din 54004 for reference.

Optical brightening agent er-iii cas no. 13001-40-6 chemical name: 1,4'-bis(2-cyanostyryl) benzole specifications appearance slight yellow greenish powder melting point 288-201 ℃ purity ≥99% moisture content ≤0.5 application optical brightener 199 is used to the whitening process of dacron, acetic fiber, polyamide fiber, blends of terylene-cotton etc.

export KSN fluorescent brightening agent could be the solution that we've got continued to emerge within the China industry and accomplished superior reputation. Our products advertising and marketing network at all over the China regions. Far more than ten years, we have created into a high-volume, multi-function in the traits, it might completely meet the requirements from the export KSN fluorescent brightening agent industry.


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