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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.

Alibaba offers 142 optical brightener agent vbl products. such as free samples, paid samples.

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 …

Alibaba offers 3,009 solvent base ink pigment products. about 46% of these are printing inks, 19% are pigment. a wide variety of solvent base ink pigment options are available to you, such as water based ink, titanium, and iron oxide.

Qualified professional ER I fluorescent brightening agent for PVC products of China supplier for international and regional trade enterprise.Being the most effective goods of our factory,our professional ER I fluorescent brightening agent for PVC goods series have already been tested and won us specialist authority certifications. For more parameters and solution list specifics,please click the button to acquire a lot more info.


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