Optical Brightener Agent

PRODUCT NAME：Optical brightener OB

Chemical Name       2.5-bis(5-tertbutyl-2-benzoxazolyl)thiophene

Molecular Formula         C26H26SO2N2

Molecular Weight   430.575

Structure           

CAS Number 7128-64-5

Specification   Appearance:     Yellow crystalpowder

                 Assay:       98.0%min

                 Melting Point:196 -203°C

                 Volatiles Content     0.5% max

                  Ash content:   0.2% max

Packing   25kg / fiber drum

Applications    It is used in thermoplastic plastics. PVC, PE,PP, PS, ABS, SAN, SB, CA, PA, PMMA, acrylic resin., polyester fiber paint,coating the brightening of printing ink. .

Usage:   (With plastic raw material weightpercentage)

        PVC Whitening: 0.01 ~ 0.05%

        PVC : To improve brightness: 0.0001 ~ 0.001%

        PS : 0.0001 ~ 0.001% 

        ABS: 0.01 ~ 0.05%

        Polyolefin colorless matrix: 0.0005 ~ 0.001%

         White Matrix: 0.005 ~ 0.05%