Light Stabilizer 770 CAS 52829-07-9

Factory Supply Light Stabilizer 770 CAS 52829-07-9 with Best Price

  • Appearance: White powder
  • Purity: 99. 0%min
  • Stock: In stock
  • Sample: Available
  • Zhishang Chemical: Light Stabilizer 770 Supplier & Manufacturer

Basic Info

What is Light Stabilizer 770?

Light stabilizer 770 is also called bis(2,2′,6,6′-tetramethylpiperidinyl) sebacate. Appearance is white crystalline powder. Melting point 81℃~86℃, soluble in ethanol, ethyl acetate, benzene and other organic solvents, insoluble in water. It is a representative variety of low molecular weight HALS. Its light stabilizing effect is high, suitable for products such as polyethylene, polypropylene, polystyrene, ABS, etc., especially in polyolefin products, the light stabilizing effect is 3 to 4 times that of ultraviolet absorbers and nickel quenchers, due to the relative molecular Small in weight, high in volatility, poor in migration resistance and extraction resistance, it is suitable for use in thick products. Limited by its own high alkalinity, it has antagonism effect with halogenated flame retardants, acid dyes, thioesters, and acid resins such as PVC, PC, and PMMA. Recently, it has been combined with high molecular weight HALS, benzotriazole and other ultraviolet absorbers. usage trends.

Hindered amine light stabilizers (HALS) have been a hot topic in the development and research of polymer stabilizers in the past 20 years. Due to the unique and excellent light protection performance of HALS itself, its efficiency is 2-3 times that of general traditional light stabilizers. At the same time, it has a good synergistic effect with UV absorbers, antioxidants and other additives, and does not color the resin. , low toxicity or non-toxic, so it is an additive with broad development prospects. According to statistics in 1996, the annual consumption of HALS in the world has accounted for 54% of the total consumption of light stabilizers in the world, and it is still growing at an annual rate of 8%. Light stabilizer 770 is a typical low molecular weight product among many hindered amine light stabilizers. It came out in the 1970s in Japan’s Sankyo Company and Switzerland’s Ciba-Geigy Company. Later, American Cyamide Company, Goodrich Company, Hearst Company, Borg-Warner Company, Italy’s Chimos Montefluos Company, Japan’s Sumitomo Company, and companies in the Czech Republic, Russia, Germany and other countries successively developed similar products. . Due to its low cost and good light stability, it is widely used in polyolefin materials such as polypropylene, and is still widely studied and applied today.

Light Stabilizer 770 Uses

Light Stabilizer 770 is generally utilized as a high-efficiency hindered amine light stabilizer, ideal for polypropylene, polyethylene, abdominal material as well as polyurethane. The product attributes are as follows:

  1. It can properly absorb ultraviolet light with a wavelength of 290-400nm, or it can quench the energy of fired up particles, or it has the capability to record cost-free radicals.
  2. Good light stability and also thermal security.
  3. Excellent compatibility, no leakage during usage.
  4. Resistance to hydrolysis, water as well as various other solvent extraction.
  5. Reduced volatility as well as low pollution.
  6. Safe or low-toxic, cheap as well as very easy to obtain.

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Application of Light Stabilizer 770

CN201610868657 discloses a special glue for protection, and specifically designs a special glue for color steel tile protection, which is composed of methyl ester, ethyl acetate, methylene chloride, hydrogenated rosin resin, anti-yellowing resin, styrene-isoprene- Styrene block copolymer, light stabilizer 770 and tinting paste, wherein the parts by weight of each component are as follows: 20-30 parts of methyl ester, 10-20 parts of ethyl acetate, 5-15 parts of dichloromethane, 5-11 parts of hydrogenated rosin resin, 7-9 parts of anti-yellowing resin, 29-51 parts of styrene-isoprene-styrene block copolymer, 0.02-0.2 parts of light stabilizer 770, 0.05 parts of color paste -0.15 copies. The special adhesive has the characteristics of anti-aging, anti-corrosion, anti-rust, high/low temperature resistance, low odor, environmental protection, and no toxic and harmful substances. It can effectively prolong the service life of the color steel tile. The preparation process is simple, the production cost is low, and the bonding Good performance and high comprehensive utilization value.

CN201610989737.X discloses a yellowing-resistant foamed plastic and its preparation method, which relates to the field of plastics technology, and mainly consists of hexamethylene diisocyanate, urea-formaldehyde resin, azobisisobutyronitrile, cyclopentane, titanium oxide, pine Smoke ink, hydrogenated rosin ester, light stabilizer 770, phthaloyl peroxide, triphenyl phosphate, starch, glycerin, triethylamine, cotton pulp, pentaerythritol, ammonium polyphosphate. The foam plastic of the present invention adopts hydrogenated rosin ester, light stabilizer 770, titanium oxide, pine smoke ink and other raw materials to cooperate with each other, has good light stability, and then has good yellowing resistance, and triphenyl phosphate helps to strengthen the product Excellent flame retardant performance, combined with pentaerythritol and ammonium polyphosphate, the foam has excellent flame retardant performance. The product of the invention has long overall service life, good yellowing resistance and flame retardancy.

Preparation of Light Stabilizer 770

  • 2,2′,4,4′,6-pentamethyl-2,3,4,5 tetrahydropyrimidine is produced by feeding ammonia gas in acetone, using ammonium chloride as a catalyst, 2,2′ , 4,4′,6-pentamethyl-2,3,4,5 tetrahydropyrimidine reacts in the presence of acetone to generate 2,2′,6,6′-tetramethyl-4-oxopiperidine. In the presence of catalysts such as skeleton nickel, 2,2′,6,6′-tetramethyl-4-oxopiperidine undergoes liquid phase addition to obtain 2,2′,6,6′-tetramethyl- 4-Hydroxypiperidine.
  • Sebacic acid and methanol are esterified in the presence of sulfuric acid to obtain dimethyl sebacate.
  • 2,2′,6,6′-tetramethyl-4-hydroxypiperidine is reacted with dimethyl sebacate to obtain a finished product.
  • A preparation method of hindered amine light stabilizer 770, specifically as follows:

    In a 500ml four-neck flask equipped with a stirrer, a thermometer, and a reflux condenser, add 0.37mol (75.33g) of sebacic acid, 0.76mol (120.15g) of tetramethylpiperidinol, and 3.88g of dioctyltin oxide at room temperature and 213.5g of trimethylbenzene, slowly warming up to the reflux temperature under stirring, and keeping it at 170°C-175°C for 4h under reflux and water separation. During the reaction process, the reaction process is judged by GC analysis of the ratio of mono- and di-esters generated by the reaction, and the reaction is controlled to the end.

    After the reaction, the solution was cooled to 80° C., the catalyst was removed by filtration, and trimethylbenzene was distilled off under reduced pressure. Add equal weight of petroleum ether and 3.5g of activated carbon to the remaining material, heat to 60°C-70°C and stir for 1h, then filter to remove the activated carbon. The remaining petroleum ether solution was cooled to 0-25°C, crystallized for 1 hour, filtered and dried to obtain the product, which was identified by NMR and determined to be hindered amine light stabilizer 770. The melting point of this product is 82°C-84°C, the light transmittance is: 425nm≥95%, 500nm≥97% (10g/100ml toluene), and the yield is 94% (calculated by sebacic acid).


  1. Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate – WikiPedia
  2. CN201610989737.X A kind of anti-yellowing foam plastic and its preparation method
  3. [China Invention] CN201410193843.8 A preparation method of hindered amine light stabilizer 770

Light Stabilizer 770 Supplier and Manufacturer

As a light stabilizer 770 supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best light stabilizer 770 raw materials to customers all over the world.

Over the years, relying on professional team experience and customer-centric team concept to meet customer needs in a timely manner, our company enjoys a high reputation in the world. At present, our company has served more than 6,000 customers and has established long-term cooperative relations with customers from many countries.

If you have a demand for light stabilizer 770 and related products, please contact our service staff Zhishang Chemical – White directly, and we will provide you with high-quality products at the best price.

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