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3.especially suitable for high temperature molding of plastic products whitening. recommended dosage. add jinan credit chemicals optical brightener 4bk for textile cotton fabric to every 100kg of material: 1. eva, polypropylene, nylon, polycarbonate and other added in 5 ~ 20g. 2.the amount of polyester fiber added in 10g ~ 40g.

Whitening agents / optical brighteners are additives that impart brightness to polymers and intensify the degree of whiteness. these agents function on the basis of the ‘fluorescence effect’; they absorb light in the uv spectrum and emit light in the blue region of the visible spectrum to yield a brighter and fresher appearance to the plastic.

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.

We, megha international established in the year 1997 as one of the leading manufacturer, supplier and exporter of high quality optical brightening agents from mumbai,maharashtra,india. we offer this optical brightening agents at the most competitive prices.

excellent quality 127 brightener agent for pipe manufacturer with years's experience, from China.We mainly provide excellent quality 127 brightener agent for pipe with premium quality and competitive price tag.we've an expert excellent quality 127 brightener agent for pipe item designers.Our item is through the national professional certification.


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