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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.

Factory supply fluorescent brightener vbl cas 12768-92-2 cas 28950-61-0 cas5089-22-5 cas 16470-24-9. ... chemicals raw materials optical brightening agent vbl 85 fluorescent brightener vbl 85 for cotton fabric. chongqing jinlinyuan environmental protection technology co., …

These whitening agents 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. optical brighteners are used in engineering plastics like thermoplastic polyurethanes, polyvinylchlorides (pvc), styrene homo- and copolymers and polyolefins among others.

Use methods of optical brightening agent in plastics. many plastic terminal manufacturers do not know much about proper use of fluorescent whitening agent (optical brightening agent).today, anyang general chemical co., ltd. will popularize several use methods of optical brightening agent in plastics.

Our enterprise primarily engaged and export China FP 127 brightener agent for coating in Vietnam. we depend on robust technical force and continually develop sophisticated technologies to meet the demand of China FP 127 brightener agent for coating in Vietnam prospects. We are sincerely welcome mates from several circles at property and abroad come to cooperate!


China FP 127 brightener agent for coating in Vietnam items supplier in China,we support our buyers with ideal high quality products and high level service.Becoming the specialist manufacturer in this sector,we have gained rich practical experience in producing and managing.Our China FP 127 brightener agent for coating in Vietnam items won certifications with the regional and international primary authorities .For far more detailed information,please contact us!

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