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Americos white r liquid is fluorescence brightening agent for polyester fibers. it gives brilliant whitening effect which has good fastness to sublimation, light and wet processing. it can be applied by high temperature exhaust or pad-thermo sol method and suitable for whitening effect on texturised polyester and polyester / cotton.

Typical optical brightener for textiles is er-i, er-ii, 4bk. er-i is also known as fluorescent brightener 199. it’s used in whitening and brightening polyester fiber. er-ii is also known as fluorescent brightener 199:1, used to whitening polyester, polyester/cotton, polyester/yarn, polyester/linen, and other blended fabrics. both cas number is 13001-39-3 and could be in …

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.

Nov 14, 2020 · pls send inquiry of optical brightening agent 4pl-c cas:16470-24-9-1 to [email protected] of visit www.nbinno our official website should you have any interests, thank you! related news: this means that the drug attributes of the drug substance will be lost in the future, and the monopoly power of some drug substances will also be lost.

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