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    Optical Brighteners Current Position: home > Optical Brighteners

    OB is a thiophenediyl benzoxazole class optical brightener suitable for various thermoplastic polymers, painting ink, coating, paint.

    Structural Formula:

    Details  :
    CAS No: 7128-64-5
    Appearance: light yellow or milk white powder
    Assay: 99%Min Melting point: 201-202?C
    Properties:

    1. Small consumption, strong whitening intensity, small consumption can bring a very good whitening result.
    2. Wide service behavior, suitable for various kinds of plastic whitening.
    3. Have a good compatibility with plastic, good resistance to high temperature and excellent light fastness and weathering resistance.
    Applications:

    OB as an excellent brightener has been used in various thermoplastics including PVC, PS, PE, PP, ABS, Polyolefin and other organic materials, It can also be used in coating, paint and ink, has good compatiblity with many substrates, has been widely used in plastic industry because of good heat-resistance, low addition amount and exceptional whitening effect. It shows special bright shade combined with some dyes. it is suitable for food packing but local regulations must be observed.

    Method of usage:

    The recommended loading concentrations for light color polyolefin is 0.0005 % to 0.0010% and the loading levels in other plastics range between 0.005% and 0.100% depending on substrate, processing conditions, and long-term stability requirements.  When OB is used with UV absorbers, pls noted, the loading levels must be increased.

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

    determined by compositions of the specific polymer system

    Packing: Packaged in 20kg complex paper bags or 25kg fiber drums.

     
     
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        Heat transfer fluid
    -RFCTHERM-400
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    -M/DBT Dielectric Oil
    -PEPE Dielectric Oil
    -PXE
        Intermediates
    -Biphenyl
    -BCMB
    -p-Toluic acid
    -m-Toluic acid
    -o-Tolunitrile
    -p-Tolunitrile
    -Thiophene-2,5-dicarboxylic acid
    -p-tert-Butylphenol
    -4-Acetylbiphenyl
    -o-tert-Butylphenol
    -DEET
    -Trifluoromethanesulfonic acid
    -Trifluoromethanesulfonic anhydride
    -Pentafloroiodine
    -2-Cyanobenzyl chloride
    -4-(methylamino)benzoic acid
    -4-Hydroxycoumarin
    -4-Hydroxycinnamic acid
    -Dimethyl 5-sulfoisophthalate sodium salt
    -4-Bromobiphenyl
    -4-Phenylbenzoic acid
    -4-Biphenylcarboxaldehyde
    -4-Cyanobiphenyl
    -4-phenoxyphenol
    -4-Hydroxy-(1,1'-biphenyl)-4'-carboxylic acid
    -4-Biphenyl acetic Acid
    -4,4'-Biphenyldicarboxaldehyde
    -4,4'-Dimethylbiphenyl
    -p-Terphenyl
    -Biphenyl-4,4'-dicarboxylic Acid
    -4,4'-Bis(hydroxymethyl)biphenyl
    -4,4'-Bis(methoxymethyl)- 1,1'-Biphenyl
    -4,4'-Diiodobiphenyl
    -4,4'-Dibromobiphenyl
    -2-chlorobenzaldehyde
    -5-chloro-2-methyl aniline
    -2-Methylamino-5-chlorobenzophenone
    -2-Chloro-6-nitrotoluene
    -2-Chloro-5-nitro benzoic acid
    -Hydroxypropyl beta Cyclodextrin
    -2-Bromophenyl Methyl Sulfone
    -2-Bromophenyl Methyl Sulfide
    -1,3-cyclohexanedione
    -Nitrogen trifluoride
    -2,6-Difluorobenzonitrile
    -2,6-Difluorobenzamide
    -2,6-Difluoroaniline
    -Dinitolmide
    -2,4-Dichloro benzonitrile
    -m-Toluoyl Chloride
    -o-Toluoyl Chloride
    -Terephthaloyl Dichloride
    -Isophthaloyl dichloride
    -4,4'-Oxydianiline
    -2-Iodobenzoic acid
    -Sulfobutyl Ether-β-cyclodextrin
    -4-Fluorocinnamic acid
    -1-Methylpyrrolidine
    -Sulfolane
    -2-chlorobenzonitrile
    -o-Phthalaldehyde
    -p-Chlorophenol
    -4,4'-Dihydroxy benzophenone
    -3,4-Dihydroxybenzoic acid
    -m-Phthalaldehyde
    -1,2,3,5-Tetraacetyl-B-D-Ribofuranose
    -4-tert-Butylbenzoic acid
    -4-Benzyloxycinnamic acid
    -1,4-Bis(chloromethyl)benzene
    -4-Formyl Benzoic Acid
    -2,4-Dichlorobenzaldehyde
    -Salicylaldehyde
    -o-Chlorophenol
    -Terephthalaldehyde
    -Sodium Ethoxide
    -2-aminophenol
    -2-Chlorothioxanthone
    -2-Chloroacetophenone
    -o-Toluic acid
    -4-tert-Butylbenzoic acid
    -4-methylbenzene methanol
    -3-Chloro-2-methylaniline
    -2-Trifluoromethylthioxanthone
    -Decahydronaphthalene
    -p-Toluoyl Chloride
    -Benzaldehyde-2-sulfonic acid sodium
    -m-Tolunitrile
      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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