Low salt, high molecular weight hindered amine light stabilizer
RIASORB UV-622 is a low-basicity N-R type HALS. HALS protects polymers from UV-induced photodegradation and thermal decomposition caused by long-term heat by capturing radicals generated within the polymer. RIASORB UV-622 has high compatibility with polymers, excellent volatility resistance, migration resistance, and extraction resistance, as well as outstanding thermal stability during processing. RIASORB UV-622 has a low melting point and is used in PP, PE, PS, unsaturated polyester, PMMA, PVC, and elastomers. It interacts minimally with pigments and demonstrates high weather resistance in outdoor applications when combined with phenolic antioxidants, phosphorous antioxidants, and HALS or UV absorbers of different molecular weights. UV-622 has an alkyl group coordinated to the piperidine ring, resulting in a lower basicity structure compared to N-H types like UV-770. If there are concerns about the acidity of the polymer or formulation, the use of UV-622 is recommended. Caution is necessary when used in combination with thioether-based antioxidants such as DSTP and DLTP, as they may have antagonistic effects.
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CAS No. 65447-77-0
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■Application: Polyolefin POM PA PU, etc.
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■Introduction to Rianlon Rianlon Corporation has been engaged in development and sales activities for over 20 years, conducting business with many customers around the world in the field of resin additives. Many of these customers are renowned manufacturers leading their respective industries globally. All of our production bases are located overseas, but we (Rianlon Japan Co., Ltd.) are responsible for serving our customers in Japan. In Japan, we have successfully conducted quality evaluation tests and have been adopted by major paint manufacturers, engineering plastic manufacturers, as well as in adhesive-related and general-purpose plastic applications. ■Featured Products (Polymer Materials) -RIASORB (UV Absorber & HALS) -RIANOX (Antioxidant) -U pack (One-pack Blend) ■Product Introduction (Lubricant Applications) -Lubricant Additives (Kangtai Lubricant Additives, various components and packages) ■Product Introduction (Cosmetic Applications) -Cosmetic Raw Materials (Aegis Beauty Solution Ltd., UV filters and antioxidants, etc.)