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    Optical Brighteners Current Position: home > Optical Brighteners

    Introduction:

    ER-I is a bisdiphenylethylene class optical brightener mainly used in polyester fiber.

    Structural Formula:

    Details  :
    CAS: 13001-39-3

    Molecular Formula: C24H16N2 Molecular Weight : 332

    Appearance: Yellowish-green crystalline solid
    MP: 230-234?C  Purity: ≥99%
    Properties:

    ER-I is a whitening agent for polyester. It is non-toxic, odorless, non-ionic and soluble in most of organic solvents. Product Whitened by ER has a natural pure white appearance. Being stable in chemical properties and characterized by strong high-temperature resistance and light stability, ER is one of the most ideal whitening agents generally accepted internationally for polyester fiber
    Applications:
    ER-I in the form of refined powder is very suitable for whitening and brightening polyester fiber by high temperature dyeing. and has good whitening effect on plastics such as PE,PP and PVC and their process of shaping with polyester chips or recovered polyester chiaps .In addition, the refined powder is widely used in coating industry.
    Method of usage:

    1pad-dyeing hot melt process:The recommended loading concentrations 14g/L

    technological processpadding----precure(100)----postcure185--200,20-30seconds, impregnation liquid pH is 4~5.
    2
    high temperature dyeing. The recommended loading concentrations 0.10.4%(o.w.f), bath ratio11030; dyeing temperature120130,pH: 510depending on substrate, processing conditions, and long-term stability requirements.

    Please Noted: above recommended loading can be a reference. Exact loading must be

    determined by compositions of the specific polymer system

    Packing: 25kg complex paper bag or fiber drum.

     

     
     
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        Intermediates
    -Biphenyl
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      Products 
        Optical Brighteners
    -FWA OB-1 (C.I.393)
    -FWA OB(C.I.184)
    -FWA ER-II(C.I. 199:1)
    -FWA ER-I(C.I. 199)
    -FWA CBS-X(C.I. 351)
    -FWA FP-127(C.I. 378)
    -FWA KSN(C.I. 368)
    -FWA EBF(C.I.185)
    -FWA KCB(C.I. 367)
    -FWA PF(C.I. 135)
    -FWA ER-III(C.I. 199:2)
    -FWA DMS(C.I.71)
    -FWA CXT(C.I.71)
    -FWA BA (C.I. 113)
    -FWA 4BK(C.I. 113)
    -FWA BBU(C.I.220)
    -FWA APC(C.I. 220)
    -FWA VBL(C.I. 85)
    -FWA MST(C.I. 353)
    -FWA BAC(C.I. 363)
     

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