Big discounting Subang - Optical Brightener OB – Subang

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Big discounting Subang - Optical Brightener OB – Subang Detail:

Structural formula

Product Name: Optical brightener OB

Chemical Name: 2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole)

C.I.:184

CAS NO.:7128-64-5

Specifications

Molecular formula: C₂₆H₂₆N₂O₂S

molecular weight: 430

Appearance: light yellow powder

Tone: blue

Melting point: 196-203℃

Purity: ≥99.0%

Ash: ≤0.1%

Particle size: Pass 200 mesh

Maximum absorption wavelength: 375nm（Ethanol）

Maximum emission wavelength: 435nm（Ethanol）

Properties

Optical brightener OB is a kind of benzoxazole compound, it is odorless, hard to dissolve in water, soluble in paraffin, fat, mineral oil, wax and common organic solvents. It can be used for whitening thermoplastic plastics, PVC, PS, PE, PP, ABS, Acetate fiber, paint, coating, printing ink, etc. It can be added at any stage in the process of whitening the polymers and make the finished products emit a bright bluish white glaze.

Application

Optical brightener OB is one of the best brighteners widely used in plastics and fibers and has the same whitening effect as Tinopal OB. It can be used in thermoplastics, polyvinyl chloride, polystyrene, polyethylene, polypropylene, ABS, acetate, and it can also be used in varnishes, paints, white enamels, coatings, and inks.It also has a very good whitening effect on synthetic fibers.It has the advantages of heat resistance, weather resistance, non-yellowing, and good color tone.It can be added to the monomer or prepolymerized material before or during polymerization, condensation, addition polymerization, or added in the form of powder or pellets (i.e masterbatch) before or during the formation of plastics and synthetic fibers.

Reference usage:

1 PVC:

For soft or rigid PVC:

Whitening: 0.01－0.05% (10－50g/100KG material)

Transparent: 0.0001－0.001%（0.1g－1g/100kg material）

2 PS:

Whitening: 0.001% (1g/100kg material)

Transparent: 0.0001－0.001 (0.1－1g/100kg material)

3 ABS:

Adding 0.01-0.05% to ABS can effectively eliminate the original yellow color and achieve a good whitening effect.

4 Polyolefin:

Good whitening effect in polyethylene and polypropylene:

Transparent: 0.0005－0.001%(0.5－1g/100kg material)

Whitening: 0.005－0.05%(5－50g/100kg material)

Package

25kg fiber drum，with PE bag inside or as customer’s request.

Product detail pictures:

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Responsible excellent and fantastic credit rating standing are our principles, which will help us at a top-ranking position. Adhering towards the tenet of "quality initial, buyer supreme" for Big discounting Subang - Optical Brightener OB – Subang , The product will supply to all over the world, such as: Sheffield, Sao Paulo, Argentina, Our products are exported worldwide. Our customers are always satisfied with our reliable quality, customer-oriented services and competitive prices. Our mission is "to continue to earn your loyalty by dedicating our efforts to the constant improvement of our products and services in order to ensure the satisfaction of our end-users, customers, employees, suppliers and the worldwide communities in which we cooperate".

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