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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.

Optical brightening agent er-ii by anyang general chemical is a non-ionic 1-(2-cyanostyryl)-4-(4-cyanostyryl)benzene. it is used in the whitening and brightening of coatings. optical brightening…

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 …

We are one of the top-notch manufacturer, exporter, trader and importer of a comprehensive range of industrial inks. our range includes water base flexographic ink, water base shiner, solvent base flexographic ink, pigment emulsion paste, binding gum and paste, basic dyes and optical whitening agent that is formulated using high grade base material.we have more than …

wholesale price OB optical brightener for plastic in Vietnam manufacturer with years's encounter, from China.We primarily provide wholesale price OB optical brightener for plastic in Vietnam with high quality and competitive value.we have an expert wholesale price OB optical brightener for plastic in Vietnam item designers.Our product is via the national specialist certification.


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