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Applications of optical brightening agent er-i. fluorescent brightener 199 (optical brightening agent er-i) is very suitable for whitening and brightening polyester fiber and has good whitening effect on plastics such as pe, pp and pvc and their process of shaping with polyester chips or recovered polyester chips. in addition, the refined ...

(1) fluorescent brightenening agent vbl is a typical representative of bis(triazinylamino)stilbene derivative. (2) it can be soluble in 80 times soft water and shows anion character and the ph value resistant to acid and alkali is 6-11 and the expected ph value of dyeing bath is 8-9.

Vigoro ecoborder 4 ft. easy to install no diggingflexible and sturdy rubber landscape edging in grey (6-pack) installation hardware included. 4.6 out of 5 stars 5. $86.36 $ 86. 36. ... red. 4.5 out of 5 stars 351. $39.99 $ 39. 99. get it as soon as mon, nov 16. free shipping by amazon. ... from $48.75. emsco group 2032hd bedrocks trim-free gray ...

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