FLUORESCENT WHITENING AGENTS

CBS-127 | ER | KCB | KSN | OB | OB-1

Fluorescent Whitening Agent CBS-127:

Chemical name: 4,4'-Bis[2-(2-methoxyphenyl) ethenyl]-l,l'-biphenyl
CAS No.: 40470-68-6

l. Properties:

With appearance of Light yellow or milk white crystalline powder, it is insoluble in water, but soluble in ordinary organic solvents. It's melting point is 216-222°C. Whitening Agent CBS-127 is similar to Uvitex FP made in Ciba Switzerland.

2. Application:

Fluorescent Whitening Agent CBS-127 has very good whitening effect on various kinds of plastics and their products, especially on the products of plastics such as PVC and PS. It has extra ideal whitening and brightening effects on artificial leathers. No yellowing and discoloring will occur on the products whitened by this whitening agent even if they are stored for a long time.

3. Directions for use and dosage:

The dosage should be 0.01-0.05% on weight of plastic. Put the whitening agent into the plastic pellets and mix the mixture thoroughly before shaping the plastic products.

4. Specifications:

5. Packing and storing:

Packaged in fiber drums, 20kg or 10kg each. Stored in cool and dry place.

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Fluorescent Whitening Agent ER:

Chemical name: 1,4-Bis(2-cyano styryl) benzene
Molecular formula: C24Hl6N2

l. Properties:

Fluorescent Whitening Agent ER, is one of the bisdiphenylethelene compounds and similar to Blankophor ER made in Bayer A.G., Germany. ER has an appearance of yellowish green powdered crystal with a purity equal to or higher than 98% and a melting point of 230 to 234°C. It is non-toxic, odorless, nonionic and soluble in most of organic solvents. Products whitened by ER have a natural pure white appearance. Being stable in chemical properties and characterized by strong high temperature resistance and photostability. ER is one of the most ideal whitening agents generally accepted internationally for polyester fiber.

2. Applications:

Fluorescent Whitening Agent ER in the form of refined powder is very suitable for whitening and brightening polyester fiber and has good whitening effect on plastics such as PE, PP and PVC and their products. Products can be remarkably upgraded by adding ER refined powder in the process of shaping with polyester chips or recovered polyester chips. In addition, the refined powder is widely used in coating industry.

3. Directions form use and dosage:

Put Fluorescent Whitening Agent ER in the form of refined powder, the polyester chips and other auxiliaries together into the mixer. The dosage of 0.02-0.08% on weight of polyester is recommended and should be determined according to the requirement for the whiteness of the finished products. Mix the mixture thoroughly at 50-150'C and then keep it at 240-300°C for drawing-spinning.

4. Specifications:

5. Packing and storing:

Packaged in fiber drums, 10 or 20kg each. Stored in cool and ventilated place.

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Fluorescent Whitening Agent KCB:

Chemical name: 2,2'-(1,4-naphthalenediyl) Bisbenzoxazole
CAS No.: 5089-22-5

l. Properties:

With appearance of yellowish green crystalline powder, it's melting point is 210-212°C and fluorescence tone is bluish bright white. It is insoluble in water, but soluble in ordinary organic solvents. It is similar to the products such as Hostalux KCB and Hoechst T 1258 make in foreign countries.

2. Applications:

This whitening agent can be used for whitening and brightening plastic films, injection molded materials, expanded or foamed PVC, EVA, PU foams, rubber products, whitening coatings and lacquers.

3. Directions for use and dosage:

Mix this whitening agent with the pellets to be whitened thoroughly and then carry out shaping. Generally, a dosage of 0.01-0.05% on weight of material to be whitened is recommended.

4. Specifications:

5. Packaging and storing:

Packaged in fiber drums, 20kg or 10kg each. Stored in dry room.

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Fluorescent Whitening Agent KSN:

l. Properties:

It is a mixed compounds as a substitute of ordinary various kind of optical brighteners. It has the characteristics of convenient, minimum of adding up and best efficient in utilize. This fluorescent whitening agent is similar to Hostalux KSN.

2. Applications:

Extensively used in industries of plastics, fiber, polyester plastics, polyester fiber and coating, painting, inks.

3. Speciflations:

4. Packaging and storing:

Packed in fiber drums, 10kg or 20kg each. Stored in cool and ventilated place.

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Fluorescent Whitening Agent OB:

Chemical name: 2,2'-(2,5-thiophenediyl)Bis[5-(1,1-dimethylethyl)]-benzoxazole
CAS No.: 7128-64-5

l. Properties:

With appearance of light yellow or milk white powder, as a compound of benzoxazole type and melting point 196-203°C. It is hardly soluble in water, but soluble in paraffin, mineral oils and ordinary organic solvents. Fluorescent whitening Agent OB is similar to Uvitex OB made in Ciba Switzerland.

2. Applications:

OB 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 process of whitening the polymers and can give the finished products a bright bluish white glaze.

3. Directions for use and dosage:

The dosage should be 0.01-0.05% on weight of plastic. Put whitening Agent OB into plastic pellets, mix the mixture thoroughly and then carry out shaping.

4. Specifications:

5. Packing and storing:

Packaged in fiber drum with PE liner, 20kg or 25kg each. Stored in dry and cool place.

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Fluorescent Whitening Agent OB-1:

Chemical name: 2,2'-(1,2-ethenediyldi-4,1-phenylene) Bisbenzoxazole
CAS No.: 1533-45-5

1. Properties:

With appearance of bright yellow crystalline powder and melting point 365-370°C. It is insoluble in water, but soluble in high boiling point organic solvents such as benzene tricheloride. It is strongly resistant to heat and light due its high boiling point. This whitening agent is similar to Eastobrite OB-1 made in Eastman USA.

2. Applications:

Whitening Agent OB-1 is especially suitable for shaping various kinds of plastics and their products under high temperature. It has an extra ideal whitening effect on polyester fibers as well as polyester fiber containing fabrics including polyester-cotton blend fabric.

3. Directions for use and dosage:

The dosage should be 0.01-0.05% on weight of plastics or polyester pellets. Mix the materials thoroughly before shaping of the plastic products or drawing-spinning of polyester fibers.

4. Specifications:

5. Packaging and storing:

Packaged in fiber drum with PE liner, 1Okg or 20kg each. Stored in dry and ventilated place.

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