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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 …

China optical brightener catalog of fluorescent brightener kcb for shoe material, leatherette fluorescent brightener agent fp 127 provided by china manufacturer…

Use methods of optical brightening agent in plastics. many plastic terminal manufacturers do not know much about proper use of fluorescent whitening agent (optical brightening agent).today, anyang general chemical co., ltd. will popularize several use methods of optical brightening agent in plastics.

6. a fluorescent pigment according to claim 4 or claim 5 wherein the cross-linker is glycerine, pentaerythritol, dipentaerythritol, or trimethylolpropane. 7. an ink containing a solvent for the ink and a pigment according to any one of the preceding claims, the solvent being such as not substantially to solubilize the pigment. 8.

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