About Songwon

SONGWON, founded in 1965 and headquartered in Ulsan, South Korea, has grown from being the nation’s first polymer stabilizer manufacturer to one of the top global producers of specialty chemical additives. In the coatings industry, SONGWON plays a pivotal role by offering a comprehensive range of polymer stabilizers designed to protect brands and substrates against heat, UV exposure, and oxidative damage. Its high-value portfolio includes primary and secondary antioxidants, thioester types, UV absorbers (UVAs), and hindered amine light stabilizers (HALS), all formulated to enhance long-term durability and color retention across diverse substrates like steel, wood, plastics, ceramics, and composites.

TMBP

TMBP by Songwon is a clear, 2,2’,6,6’-tetramethyl-4,4’-biphenol. It offers toughness. TMBP by Songwon is recommended for coatings. It is designed for use in the manufacture of epoxy resins.

See the product

SONGSORB® CS 329

SONGSORB® CS 329 by Songwon is a 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol. Acts as a strong absorber of ultraviolet radiation in the 300~400nm region. Has a high degree of photostability - photochemical energy absorbed in the ultraviolet region is dissipated as thermal energy. Readily soluble in a wide range of organic solvents that shows low volatility during high processing temperature and good extraction resistance. It can be used in combination with phenolic & phosphite antioxidants, and HALS to optimize performance in outdoor use. SONGSORB® CS 329 is particularly suitable for light stabilizing in coatings, propylene, polyurethane and polyvinyl chloride. It is listed on AICS, DSL, IECSC, ENCS, NZIOC, ECL, EINECS, TSCA and PICCS inventories.

Sustainable option

See the product

SONGSORB® CS 81

SONGSORB® CS 81 by Songwon is a 2-hydroxy-4-n-octoxybenzophenone. Acts as a solid UV absorber. It absorbs ultraviolet radiation in the 240~340nm region. Significantly improves the resistance of clear coating against discoloration, cracking, loss of gloss and loss of adhesion. Exhibits synergy with HALS. For better long-term performance, use of UVAs of the benzotriazole type is recommended. Shows excellent solubility and compatibility with high solid coatings formulations. SONGSORB® CS 81 is mainly used in applications where lower requirements on long-term stability are given. It is listed on AICS, DSL, IECSC, ENCS, NZIOC, ECL, EINECS, TSCA and PICCS inventories.