Optical Brightener OB

Technical Index

1. Chemical Name: 2,5'-Bis [2-(5-tert-buty l-2 benzoxazoly) thiophene

2. CAS No.: 7128-64-5

3. C.I. No.: 184

4. Molecular Formula: C26H26N2O2N2

5. Molecular Weight: 430.575

Applications

A good whitening agent for PVC, PS, PE, PP, ABS, SAN, CA, PA, PMMA, acylic resin, thermolastic plastics, acetate fiber, paint, coating and printing ink, etc.

Package

25KG fiber drums with PE liner.

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%

Appearance: Light yellow or milk white powder
Purity: ≥99.0%
Volatility: 0.5% max
Melting point: 196-203°C

Optical brightener OB-1

Technical Index

1. Chemical Name: 2.2' - ( 4.4' - diphenol vinyl ) dibenzoxazol

2. CAS No.: 1533-45-5

3. C.I. No.: 393

4. Molecular Formula: C28H18N2O2

5. Molecular Weight: 414.4

Application

Mainly used in whitening of polyester and plastic materials such as PVC, ABS, EVA, PS, etc. It is also widely used in various of polymer substance, especially polyester fiber, PP fiber as well as whitening of Nylon during polymerization.

Package

25KG fiber drums with PE liner

Optical Brightener OB-1
Appearance: yellowish green powder
Purity: ≥99%
Volatility: 0.5% max
Melting point: 358-360℃