Uv Absorber Uv928; Light Stabilizer 928 73936-91-1 928
Phenol; UV absorber-928; UV absorber UV928; light stabilizer 928;
CAS No.: 73936-91-1
Molecular formula: C29H35N3O
Molecular weight: 441.6077
|Appearance||Light Yellow Crystalline Powder|
Welcome to inquire us to get the complete COA
Introduction of UV Absorber / Light Stabilizer
Plastics and other polymer materials produce an automatic oxidation
reaction due to the action of ultraviolet rays under sunlight or
fluorescence, which causes degradation of the polymer and
deterioration, which deteriorates appearance and mechanical
properties. Any substance that absorbs the ultraviolet light in
sunlight and fluorescent light sources without changing itself is
called a UV absorber and is a light stabilizer. When the wavelength
of ultraviolet light is 290 nm or less, it is completely absorbed
by the ozone layer before reaching the ground, and the problem is
ultraviolet light of 290 to 400 nm, and the light energy is related
to the aging of the polymer. The role of the ultraviolet absorber
is to selectively absorb such high-energy ultraviolet rays, which
are converted or consumed by energy conversion to become harmless
energy. The ultraviolet wavelength which deteriorates depending on
the type of the polymer is also different. The wavelengths that can
be most affected are: polyethylene 300 nm, polyvinyl chloride 310
nm, polystyrene 318 nm, polyester 325 nm, polypropylene 310 nm,
vinyl chloride-vinyl acetate copolymer 322-364 nm, polyacetal
300-320 nm, polycarbonate The ester was 295 nm, the nitrocellulose
was 310 nm, the polymethyl methacrylate was 290 to 315 nm, the
thermoplastic resin was 290 to 320 nm, and the unsaturated
polyester was 325 nm.
Ultraviolet absorbers can convert high-energy ultraviolet light
energy into heat or non-destructive long light waves to protect
substances added with UV absorbers from UV damage. It is mainly
used as a light stabilizer for plastics, rubber, paints, dyes, etc.
to prevent their photodecomposition under long-term exposure to
sunlight. It is generally required to have a light color, good
miscibility, heat resistance and chemical stability, and low
volatility. It is also non-toxic and non-migratory when used in
food packaging materials. The sensitive wavelengths of various
substances to ultraviolet light are different, and the range of
light waves that various ultraviolet absorbers can absorb is also
different. Appropriate selection can achieve satisfactory light
stability. UV absorbers can be classified into the following
categories according to their chemical structure: salicylates,
benzophenones, benzotriazoles, substituted acrylonitriles,
triazines and others. Commonly used ultraviolet absorbers: UV
absorbers uV-9, UV absorber uV-531, UV absorber N-35, UV
absorber-928, UV absorber TBS.
Application Of UV-928
UV-928 is UV absorber of the hydroxyphenyl benzotriazole class
developed specially for high performance coating applications. Its
characteristic broadband absorption provides efficient protection
to coatings and light sensitive substrates. Its excellent
solubility and high thermal and environmental permanence makes it
particularly suitable for coatings exposed to high temperature
UV-928 is recommended for temperature curing system, such as powder
coatings, steel coil coatings.
1. Automobile paint;
2. Coil coating;
3. Film coating;
4. Powder coating;
UV-928 can be used in combination with a light stabilizer and
combinations provide best protection against light degradation.
Packing & Storage
25kgs Fibre Drum, 25kgs Carton, and we can provide other package
|Tel||0086 134 35409275|
|Fax||0086 757 84888673|
1. Are you a factory or tarding company?
Our company concentrates on on the production, sales and service
for plastic and coating additives, fine chemicals and
2. Where dose your company locate?
We locate in Heze, Shandong province of China, also have sales rep.
3. Can you provide samples for quality checking before placing an
Samples are avaliable upon request, but the shipping cost should be
paid by customer.
4. How to get the price list?
Please inqire us by alibaba/email.
5. What's your payment term?
100% TT Before Shipment