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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.

Masterbatch is mainly available in the form of standard pellets but also in the form of mini-pellets. a distinction is made between white, black and colored masterbatch depending on the pigment type. the premix, split-feed and color-matching processes are available for compounding masterbatch.

Optical brighteners are added during the thermoplastic molding process, rather than added in liquid form afterward, that’s the word “mass-whitening” come from. generally, obas were mixed with powder or granules plastic for flexible pvc, obas were added in …

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.

ER I bleaching powder for pvc pipe producer manufacturer with years's experience, from China.We mainly supply ER I bleaching powder for pvc pipe producer with top quality and competitive value.we've a professional ER I bleaching powder for pvc pipe producer product designers.Our item is by way of the national specialist certification.


ER I bleaching powder for pvc pipe producer manufacturer with years's encounter, from China.We mainly supply ER I bleaching powder for pvc pipe producer with high quality and competitive cost.we have an expert ER I bleaching powder for pvc pipe producer solution designers.Our product is by way of the national professional certification.

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