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Ultraviolet absorber 531
Product Name: ultraviolet absorber 531
C.I.: 40425
CAS: 1843-05-6
Ionic type:nonionic
Appearance: Slightly yellow powder
Ingredient: Benzotriazoles
Molucular Formula: C21H26O3
Formula Weight: 326.43
Synonyms: UV-531, 2-hydroxy-4-octoxy-benzophenone, UV absorber 531, ultraviolet absorber 531, BENZOPHENONE-12, CAS 1843-05-6
Application:
It is mainly used as UV absorber for paints, coatings, polyurethane, rubber, plastics and so on,especially recommended in PE, PP, PVC etc..
Description
marker
Ultraviolet absorber 531 also called UV-531, It is a slightly yellow powder, belongs to benzotriazole compounds, soluble in organic solvents, insoluble in water. It can absorb ultraviolet rays and convert them into less harmful heat energy, thus protecting the applied materials or products from the damage of ultraviolet radiation and improving the material's resistance to ultraviolet rays. Therefore, it is commonly used as UV stabilizer in plastics, coatings and other materials.
1.Product description:
Ultraviolet absorber 531 also called UV-531, is an UV absorber for plasticized and rigid PVC, polyester, PS, Acrylate resins, vinyl ester based coatings, PU based coatings, alkyed resin coatings, improves the weather resistance of the coating. The advantage is low yellowing; Good absorbance in the UV-B region; improves failure of coatings resulting from exposure to sunlight including discoloration, cracking and loss of adhesion.
Ultraviolet Absorber 531 has a melting point of 47-50°C, absorbs 240-340 nm of UV light, and is characterized by light color, good compatibility, and low migration.
2.Features:
- Ultraviolet Absorber 531 can reduce yellowing of the product after use
- Ultraviolet Absorber 531 has good absorption in the UV-B region
- Ultraviolet Absorber 531 can improve coating failures in plastics, rubbers, and coatings caused by exposure to sunlight, including discoloration, cracking, and loss of adhesion.
- Ultraviolet Absorber 531 has good compatibility with resin, low volatility.
3.Specification:
| Name | Ultraviolet Absorber 531 |
| Appearance | slightly yellow powder |
| Ionic type | nonionic |
| CAS No. | 1843-05-6 |
| Molecular Formula | C21H26O3 |
| Melting point (℃) | 47-49 |
| Boiling point (℃) | ＞300 |
| Ash | ≤0.10% |
| Volatile matter | ≤0.5% |
| Transmittance | 450 nm (%) 94.0 min.
500 nm (%) 97.0 min. |
4.Application:
UV absorber UV-531 can be used in a variety of plastics, especially polyethylene, polyvinyl chloride, polypropylene, polystyrene, ABS resin, polycarbonate, polyvinyl chloride, polyvinylidene chloride, epoxy resins, polyester and cellulose resins.
It is widely used in PE, PVC, PP, PS, PC, organic glass, propylene fiber and ethylene kool-acid ethylene kool.
At the same time used as light stabilizer for various coatings, but also for dry phenolic and drunken acid varnish, polyurethane, acrylic, epoxy products and automotive refurbishment paint, powder coatings, polyurethane, etc., to provide them with a good light stabilization effect to reduce the coating coating failure.
5.Usage:
(1)For both HDPE and LDPE, UV absorber UV-531 is very effective:
In PE flat wire, monofilament, film, the recommended dosage: 0.2-0.5%;
In low-pressure devices and blow-molded products, the recommended dosage: 0.15-0.3%;
And the effect is very good in agricultural film, which can extend the service life by 2-3 times, recommended dosage: 0.5%.
(2)For PP, Ultraviolet Absorber 531 is very effective in coloring and colorless PP, the amount added increases the amount of UV absorber as the thickness of the product decreases.
Fibers, monofilaments, flat yarns, ribbons, weaving nets and films: 0.5%; injection molding: 0.2-0.3%.
(3)For PVC: whether plasticized or non-plasticized, in the ultraviolet radiation will appear yellowing, physical properties change and other phenomena, especially plasticized PVC in the exterior will appear dark spots.
The general additive amount is: soft PVC: 0.3-2%. Hard PVC: 0.3%.
(4)For SBS and PS modified TPR material, the general dosage is: 0.3%.
(5)Others: recommended dosage: 0.1-0.3%, before use, should be tested to confirm the final formula.
6.Packaging:
Usually is 25Kg/cardboard drum or paper box or bag with inner double PE liner Or provide customized packaging according to customer requirements.
7.Our advantage:
1) Provide free samples for testing or comparing the effect difference and cost performance.
2) Fast response speed, customers' questions at any time will be responded to in two hours.
3) Fast delivery: the fastest delivery can be made on the same day.
4)Different packaging solutions: provide various packaging options according to customer requirements.
5)Technical guidance: provide improved whitening and coloring formulas and guidance according to customer production materials.
6) Sample retention or sample mailing before bulk delivery.
7) Providing certificationes, such as Reach certification.
8) Different payment methods: TT LC, etc.
9) Providing door-to-door DDP service.
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