No. 1 Salicyl Phenyl Ester
Active ingredients: Phenyl ortho-hydroxybenzoate
Quality as well as makes use of: colorless crystalline powder. Has an enjoyable aromatic odor (wintergreen oil smell). Density 1.250 g/cm3, melting point 43 ℃, boiling point (1.6 kPa) 173 ℃. Quickly soluble in ether, benzene and chloroform, soluble in ethanol, practically insoluble in water and also glycerin.
This product is a UV absorber, used in plastic items, however its absorption wavelength array is narrow. The United State Fda authorizes acrylic resin articles for usage in contact with food.
No. 2 UV Absorber UV-P
Ingredients: reaction item of o-nitroaniline and also p-cresol
Performance as well as use: Look is anemic or light yellow crystal. It can be liquified in numerous organic solvents such as gasoline, benzene, acetone and so on. It has extremely little solubility in water and is not disintegrated by concentrated antacids or focused acid. It can ionize with heavy metals to create salts. Can soak up ultraviolet rays with a wavelength of 270|280nm. Melting point 130|131 ℃.
This item is mainly utilized in polyester, chlorine-containing polyester, fiber acetate, polyvinyl chloride, polystyrene, natural glass, polyacrylonitrile and also various other resins. The stability in clear products is much better than that in tinted products. The dose in items is 0.%|0.5%.
No. 3 UV Absorber UV-O
Components: 2,4-dihydroxybenzophenone
Performance as well as usage: This product is light-colored needle-like crystals or white powder. Moisture <0.5%. Ash content <0.5%. Melting point: 136|149℃. Soluble in acetone, methanol, ethanol, methyl ethyl ketone, dioxane, N-methylpyridone and ethyl acetate, extremely insoluble in water, n-heptane and benzene. The solubility of this product in some solvents (g/100ml solvent, 25℃) is acetone 50, benzene 1, ethanol > < 0.5%. Melting point: 136|149 ℃. Soluble in acetone, methanol, ethanol, methyl ethyl ketone, dioxane, N-methylpyridone as well as ethyl acetate, exceptionally insoluble in water, n-heptane as well as benzene. The solubility of this product in some solvents (g/100ml solvent, 25 ℃) is acetone 50, benzene 1, ethanol > 50, water < 0.5, n-heptane < 0.5. This product is a UV absorber, suitable for polyvinyl chloride, polystyrene, epoxy resin
, cellulose material, unsaturated polyester, coatings and also synthetic rubber. The optimum absorption wavelength variety is 280|340nm, and also the basic dose is 0.1 %| 1%. Nevertheless, the light supporting effect of this item is not outstanding.
No. 4 UV Absorber UV-9
Active ingredients: 2-hydroxy-4-methoxybenzophenone Performance and also usage: This item is light yellow or white crystalline powder. Density 1.324 g/cm3. Melting point 62|66 ℃. Boiling point: 150|160 ℃( 0.67 kPa ), 220 ℃( 2.4 kPa). Soluble in a lot of organic solvents such as acetone, ketone, benzene, methanol, ethyl acetate, methyl ethyl ketone as well as ethanol, however insoluble in water. The solubility of this product in some solvents( g/100g solvent, 25 ℃) is benzene 56.2, n-hexane 4.3, ethanol( 95%) 5.8, carbon tetrachloride 34.5, styrene 51.2, and also DOP 18.7. This product is a UV absorber, appropriate for different plastics such as polyvinyl chloride, polyvinylidene chloride, polymethylmethacrylate, unsaturated polyester, abdominal muscle resin and cellulose material. The optimum absorption wavelength range is 28|340nm., the general dosage is 0.1% to 1.5%, it has good thermal stability and does not decay at 200 ° C. This item rarely takes in noticeable light, so it is suitable for
light-colored transparent products. This item can additionally be made use of in paints and artificial rubber. Security safety measures: Japan as well as Italy stipulate that when this item is utilized in products that enter contact with food, the maximum dose need to not exceed 0.3%.
No. 5 UV Absorber UV-531
Components: 2-hydroxy-4-n-octyloxybenzophenone Efficiency and also usage
: This product is light yellow or white crystalline powder. Thickness 1.160 g/cm3 (25 ℃). Melting point 48|49 ℃. Soluble in acetone, benzene, ethanol, isopropyl alcohol, a little soluble in dichloroethane, insoluble in water. The solubility of this item in some solvents (g/100 solvent, 25 ℃) is acetone 74, benzene 72, methanol 2, ethanol (95%) 2.6, n-heptane 40, n-hexane 40.1, as well as water 0.5.
This product is an ultraviolet absorber that can strongly take in ultraviolet rays with a wavelength of 270|330nm. It can be made use of for numerous plastics, particularly polyethylene, polypropylene, polystyrene, ABS resin, polycarbonate, polyvinyl chloride as well as resin. Excellent compatibility as well as low volatility. The basic dose is 0.1% to 1%. It has a great synergistic impact when made use of together with a small amount of 4,4-thiobis( 6-tert-butyl-p-cresol). This product can likewise be utilized as a light stabilizer for various finishes.
Safety and security precautions: This item has reduced toxicity. Lots of nations enable this product to be utilized in plasticized items that enter contact with food. For instance, in the USA, it is made use of for polyolefins. The optimum dose in the United Kingdom is 0.6%. In Italy, the optimum dose for polyethylene as well as polypropylene is 0.5%., Japan’s dose is 0.5% polyethylene, 1% polypropylene, 0.5% AS resin and also abdominal resin, and 0.2% polyvinyl chloride (no contact with oily foods or foods with ethanol material surpassing 20%).
No. 6 UV Absorber UVP-327
Components: 2-( 2′- hydroxy-3′,5′- di-tert-phenyl) -5- benzotriazole chloride
Performance and also use: This item is an ultraviolet absorber. Its characteristics and usages are similar to UV-326. It can highly soak up ultraviolet rays with a wavelength of 270|380nm. It has excellent chemical stability and also minimal volatility. Excellent compatibility with polyolefins. Especially appropriate for polyethylene and polypropylene. Furthermore, it can likewise be used for polyvinyl chloride, polymethyl methacrylate, polyoxymethylene, polyurethane, unsaturated polyester, abdominal muscle material, epoxy material and cellulose resin. This product has outstanding heat sublimation resistance, cleaning resistance, gas fading resistance as well as mechanical residential or commercial property retention. Made use of along with antioxidants for significant collaborating impacts. To improve the thermal oxygen security of items. The basic dose of this product in plastics is 1% to 3%.
Security preventative measures: This item has reduced poisoning. Japan, the USA, France, as well as Italy permit this product to be made use of in polyolefin plastics that come into contact with food. The optimum dosage is 0.5%. It is made use of in other plastics that come into contact with food. The optimum dosage stipulated in Italy is 0.2%, Japan and also France are 0.5%.
No. 7 UV Absorber RMB
Components: Resorcinyl monobenzoate
Performance as well as use: This item is white crystalline powder. The melting point is 132|135 ℃, as well as the boiling point is 140 ℃ (20Pa). Bulk density 0.68 g/cm3 (20%). Soluble in acetone as well as ethanol, slightly soluble in benzene, water, n-heptane, and so on.
This product is a UV light stabilizer, its performance resembles that of benzophenone light stabilizers. Primarily used in polyvinyl chloride, cellulose resin, and also polystyrene, with a general dosage of 1% to 2%.
No. 8 Light Stabilizer AM-101
Active ingredients: 2,2′- Thiobis( 4-tert-octylphenoloxy) nickel.
Efficiency and usage: This item is environment-friendly powder. The absorption height in the ultraviolet region is 290nm (in chloroform). It is suitable for polyolefin plastics such as polyethylene and also polypropylene. It has an especially good light stabilizing result on movies and fiber products as well as can improve processing efficiency. This product has an excellent synergistic impact when utilized along with ultraviolet absorbers, which may even more boost the photostability. Its main drawback is that it has a darker color, which triggers the item to be tinted. At the same time, it has a complementary antioxidant result with thioesters at heats, making the product gray-black.
Safety and security safety measures: This product is hazardous and also must be made use of with care.
No. 9 Light Stabilizer GW-540
Components: Tris( 1,2,2,6,6-pentamethylpiperidinyl) phosphite.
Performance and also usage: This product is white crystalline powder. Melting point 122|124 ℃. Soluble in ethanol, chloroform, acetone, benzene as well as other solvents, however insoluble in water.
This item is an impeded light stabilizer. It has no ability to absorb ultraviolet rays, but it can capture active cost-free radicals created by polymer deterioration, disintegrate hydroperoxides and move the energy of ecstatic particles, and so on. The light maintaining effect is that of basic ultraviolet rays. 24 times the absorbent. This product is suitable for plastics such as polyethylene and polyethylene. It has good compatibility with resins, good handling performance, as well as low toxicity. Along with light stabilization, it also has good thermal as well as oxidative aging resistance. Nevertheless, this item has bad warm resistance and is not suitable for long-lasting use in hot water media. Furthermore, this item is finest refined and also utilized at a temperature listed below 270 ° C. Weight management will be serious when the temperature surpasses this temperature.
No. 10 Light Stabilizer 744
Components: 4-benzoyloxy-2,2,6,6- tetramethylpiperidine.
Performance and usage: This product is white crystalline powder. The melting point is 95|98 ℃, and also the disintegration temperature is above 280 ℃. Soluble in acetone, ethanol, ethyl acetate, toluene, insoluble in water.
This item is a prevented light stabilizer. It has almost no capability to soak up ultraviolet rays, but it can successfully catch active free radicals produced by polymer materials under the activity of ultraviolet rays, consequently exerting its light stabilizing result. This product appropriates for a range of plastics such as polypropylene, polyethylene, polystyrene, polyurethane, polyamide as well as polyester, and is especially effective in polyolefins. The light resistance of this product is several times that of basic UV absorbers. It does not shade, does not pollute, has good warmth resistance and processability, and also has excellent collaborating effects when made use of along with antioxidants and also ultraviolet absorbers.
No. 11 Triazine UV Absorber
Active Ingredients: 2,4,6-tris( 2′- n-butoxyphenyl) -1,3,5- triazine.
Performance and also use: This product is light yellow powder. Melting point 156|165 ℃. Soluble in hexamethylphosphoric acid triamide, soluble in dimethylformamide when warmed, slightly soluble in n-butanol, insoluble in water.
This item is an ultraviolet absorber that can take in ultraviolet rays with a wavelength of 300 to 380nm. It appropriates for different plastics such as polyvinyl chloride, polyformaldehyde, as well as chlorinated polyether. The dose is normally not higher than 1%. Its light stabilization performance is far better than UV-9 and UV-531, but it has coloring properties, which can make the item light yellow, and its compatibility with resin is additionally bad.
No. 12 Light Stabilizer HPT
Components: Hexamethylphosphoric acid triamide.
Performance as well as usage: This product is an anemic or light yellow transparent fluid with a somewhat questionable odor. The density is 1.0253|1.0257 g/cm3 (20 ℃), the freezing point is 27 ℃, the boiling point is 116|117 ℃ (1.48 kPa), as well as the refractive index is 1.4582.|1.4589 (20 ℃). Soluble in polar and non-polar solvents, it can be miscible with usual plasticizers such as dioctyl phthalate, dioctyl sebacate, and also triphenyl phosphite in any ratio.
This product can be used as a light stabilizer for polyvinyl chloride. It can provide products superb outdoor anti-aging properties, so it is known as high-efficiency weathering representative for polyvinyl chloride. Adding 2 to 5 parts of this product to polyvinyl chloride film can not only substantially enhance its weather condition resistance and cold resistance, however likewise minimize the processing temperature level by concerning 10 ° C. In addition, this product can also be utilized as polyamide, polyurethane, urea-formaldehyde material, polyurethane resin, and so on. Superb solvent for various polymer products such as phenyl sulfide.
