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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.

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 ...

Molecular formula:c 18 h 15 cln 2 o 6 s molecular weight: 422.84 cas registry number:7023-61-2 manufacturing methods :2-amino-4-chloro-5-methylbenzenesulfonic acid diazotization, and 3-hydroxy-2-naphthoic acid coupling, and then into calcium salt. properties and applications:brilliant red, shallow blue light pink.purple red powder. insoluble in water and ethanol.

We claim: 1. a non-fluorescent ink composition for a writing instrument comprising a non-fluorescent pigment pre-dispersed in an alkyd resin, a high boiling point hydrocarbon solvent, and at least one stabilizer selected from the group consisting of antioxidants and anti-skinning agents, wherein the stabilizer of the ink composition prevents the alkyd resin from polymerizing, and the ink …

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


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