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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.

China red pigment powder, china red pigment powder suppliers and manufacturers directorysource a large selection of red pigment powder products at pigment powder ,mica powder pigment cosmetic ,organice color pigment from china alibaba

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.

Optical brightening agent er-iii cas no. 13001-40-6 chemical name: 1,4'-bis(2-cyanostyryl) benzole specifications appearance slight yellow greenish powder melting point 288-201 ℃ purity ≥99% moisture content ≤0.5 application optical brightener 199 is used to the whitening process of dacron, acetic fiber, polyamide fiber, blends of terylene-cotton etc.

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