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Optical Brightener OB

1 of 2 products in this brand
Optical Brightener OB enhances the whiteness of different products. Our Optical Brightener OB has great resistant against heat and chemical stability. Brightener OB is a high molecular weight fluorescent whitening agent, which significantly improves the whiteness in thermoplastics, printing inks, Lacquers, Manmade fiber etc. Brightener OB produces very brilliant white with light reddish Blue effect which compensates for yellowing. It has good light fastness in substrates, excellent resistance to heat, high chemical stability, Soluble in a wide range of organic solvents. It gives brilliant bluish white effect.

Chemical Name: 2,5-Bis(5- tert - butyl- benzoxazol- 2- yl) thiophene

Functions: Optical Brightener

CAS Number: 7128-64-5

Color: White

Compatible Polymers & Resins: Acrylonitrile Butadiene Styrene (ABS), Polyethylenes (PE), Polypropylenes (PP), Polystyrenes (PS), Polyvinyl Chloride (PVC)

    Knowde Enhanced TDS

    Identification & Functionality

    Chemical Name

    2,5-Bis(5- tert - butyl- benzoxazol- 2- yl) thiophene

    Dye Type

    Fluorescent Dyes

    Plastics & Elastomers Functions

    Optical Brightener

    CAS No.
    7128-64-5
    EC No.
    230-426-4
    Technologies

    Elastomers,

    Pigments & Colorants,

    Plastics

    Product Families

    Pigments & Colorants — Dyes

    Specialty Dyes

    Elastomers — Elastomer Additives

    Other Elastomer Additives

    Plastics — Polymer Additives

    Pigments & Colorants

    Features & Benefits

    Materials Features

    Chemical Resistant,

    Excellent Brightness,

    Excellent Whiteness,

    Good Light Fastness,

    Heat Resistance,

    Whitening

    Applications & Uses

    Markets

    Automotive & Transportation,

    Consumer Goods,

    Paints & Coatings,

    Printing & Packaging

    Applications

    Paints & Coatings — Automotive & Transportation

    Other Automotive & Transportation Coatings

    Automotive & Transportation — Coatings & Finishes

    Other Coatings & Finishes

    Consumer Goods — Other Consumer Goods Applications

    Printing & Packaging — Packaging Coatings

    Primers & Lacquers

    Paints & Coatings — Packaging Coatings

    Primers & Lacquers

    Printing & Packaging — Printing & Inks

    Other Printing Applications

    Compatible Polymers & Resins

    Acrylonitrile Butadiene Styrene (ABS),

    Polyethylenes (PE),

    Polypropylenes (PP),

    Polystyrenes (PS),

    Polyvinyl Chloride (PVC)

    Applications

    PVC
    A brilliant white is obtained in Rigid and plasticized PVC with using only small concentrations of Brightener OB with anatase titanium dioxide. Slightly greater concentration is required with rutile titanium dioxide. It is concentrated in each 100Kgs polymer.

    • Transparent : 0.0001-0.002% (0.1 gm-2gm)
    • White : 0.01-0.05% (10gm-50gm)
    • Polystyrene
      The Yellow cast of Polystyrene can be completely masked by using Brightener OB
      Concentration :( in each 100 Kgs polymer)
      • Transparent : 0.0001-0.002% ( 0.1 gm-2gm )
      • White : 0.001-0.005% ( 1gm-5gm )

    ABS
    Acrylonitrile butadiene styrene copolymers are invariably yellowish in color. Their appearance can be improved by small quantity of white pigment and Brightener OB.

    • Concentration : (in each 100 Kgs polymer)
    • White : 0.01-0.05% (10gm-50gm )
    • Polyolefins
      Brightener OB gives very brightening effect in Polyethylene and in Polypropylene. The brightener is homogeneously mixed with the plastic powder or granules.
      • Concentration : (in each 100 Kgs polymer )
      • Transparent : 0.0005-0.001% ( 0.5gm-1gm )
      • White : 0.005-0.05% ( 5gm-50gm )
      • Blown film : 0.0005-0.001 ( 0.5gm-1gm )

    Man-Made Fibers
    Optimal whiteness with excellent light fastness and good textile fastness is attainable in acetate fibers. The brightener is dissolved in acetone and added to the spinning dope

    • Delustred fibers : 0.01-0.1% ( 10g-100gm )
    • Lustrous fibers : 0.005-0.05% ( 5gm-50gm )
    • Clear Lacquers
      Many clear lacquers have an intrinsic yellowish color. Brightener OB intensifies the brilliance of any white or colored pigmented coating underneath the lacquer. Brightener OB is dissolved in a thinner and stirred into the colored lacquer.


    Coating thickness 20 : 0.05-0.5% on solid content.

    Usage

    Fiber, Plastic, Nylon, PVC, Ink, Pet Fiber etc

    Properties

    Color

    White

    Typical Properties
    ValueUnitsTest Method / Conditions
    Puritymin. 99%HPLC, LC-MS

    Packaging & Availability

    Packaging

    Standard Packing is 25 Kg, Other Customized Packing also available.

    Availability

    Min. Order Quantity

    •  1 Kilogram