Benzophenones Based Ultraviolet Absorbers
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2,2-Dihydroxy-4,4-dimethoxybenzophenone.
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PowerSorb™ 3049 is an efficient UV absorber for polyester film, which it protests from premature damage, particularly under severe exposure conditions.
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| Chemical Name: |
2,2-Dihydroxy-4,4-dimethoxybenzophenone |
| CAS No.: |
131-54-4 |
| EINECS No.: |
205-027-3 |
| Formula: |
C15H14O5 |
| Molecular
Weight: |
274 |
| Density[20°C, g/cm3]: |
1.34 |
| Melting Point(°C): |
129-139°C |
| Volatiles(%): |
Max.2.00 |
| K Value: |
Min.49.00 |
| Appearance: |
Pale Yellow Powder |
| Min. Purity: |
94% |
| Solubility (20°C) |
% w/w |
| Ethyl acetate: |
5 |
| Methyl ethyl ketone: |
5 |
| Methanol: |
<1 |
| Toluene: |
5 |
| Water: |
<0.01 |
The polyester film can be treated by applying a hot solution of PowerSorb™ 3049 in a polyhydric alcohol. The transmittance of film treated in this manner is greatly reduced for light of wavelengths less than 400 nm, thus allowing the film it to be used as a UV filter.
Other fields of application are:
– Allyl carbonate (spectacle lenses, 0.3 %)
– Rubber
– PUR furniture paints and varnishes (0.50 –1.00%)
– Textile industry (as a light stabilizer that is taken up by the fibres in the dye bath).
– Photographic emulsions
– Acrylic resins, Alkyd resins, Epoxy resins, Phenolic resins
– Cellulose nitrate
– Fluorescent pigments
– PUR systems, Oil paints, Polymer dispersions |
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PowerSorb™ 3049 is supplied in 20kg drum.
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