Pakistan is one of the leading countries of production and consumption of polyester staple fiber. Polyester staple fiber is actually polyester fiber (PET). Polyester staple fiber is the downstream product of PTA and ethylene glycol, and is the most widely used variety with the largest output in chemical fiber. The white polyester staple fiber can be produced by adding 0.02%-1% optical brightener OB-1 C.I. 393 CAS NO.1533-45-5 in the blending process, and the colored polyester staple fiber can be produced by adding right amount of color masterbatch to the colored polyester staple fiber.
TECHNICAL DATA SHEET of Optical Brightener OB-1
Product Name:Optical Brightener OB-1
Chemical Name:2.2’-(4.4’-diphenol vinyl) dibenzoxazol
Technical IndexAppearance：Yellowish/greenish powder
Molecular weight:414.4 Melting Point:356℃～360℃
Uses of Optical Brightener OB-1:
Mainly be used in whitening of polyester and plastic, as well in
whitening of Nylon during polymerization.
For whitening of polyester and nylon; also used in ABS, PS,PVC, HIPS, PA, PC, PP, PE,PET,EVA, PVC, etc.
Optical Brightener OB-1 Rate of use : (per 1000kg of substrate)
Polyester: 75-300g EVA, PP, nylon: 75-200g
Package:25kg per fiber drum
For polyester stable fiber, we also suggest to add some pigment blue 15:1 or 15:3,if you want to know more detail formula, kindly pls contact with our technical team.
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