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Park D.,Chemistry Institute for Functional MaterialsPusan National UniversityBusan609 735 Korea | Keck-Antoine K.,Songwon Industrial Co. | Bae E.,Chemistry Institute for Functional MaterialsPusan National UniversityBusan609 735 Korea | Suh H.,Chemistry Institute for Functional MaterialsPusan National UniversityBusan609 735 Korea
Journal of Vinyl and Additive Technology | Year: 2014

Organic alkyl and aryl phosphites are effective antioxidants and photostabilizers with applications in a wide range of polymers. The primary role of phosphites is to decompose hydroperoxide. However, aryl phosphites are also capable of reacting as antioxidants by negatively affecting the kinetics. In particular, liquid phosphites have a greater effect on polymer degradation because of their high compatibility, reactivity, and solubility with almost all polymers, but they are sensitive to hydrolysis. In order to overcome this hydrolytic sensitivity in liquid phosphites, a novel hydrolytically stable liquid phosphite incorporating a sterically hindered aromatic alcohol (2,4-di-tert-butyl-6-methylphenol) that gives hydrolytic stability to the phosphite was synthesized and characterized, and its performance as an antioxidant for polypropylene was investigated. © 2014 Society of Plastics Engineers. Source


Trademark
Songwon Industrial Co. | Date: 2013-10-17

Chemical blends for use as plastic additives to stabilize plastic materials and for protecting polymers from degradation during processing or due to ultraviolet radiation and long term heat aging.


Trademark
Songwon Industrial Co. | Date: 2008-02-12

Specialty chemical blends, namely, ultraviolet light absorbers for use in absorbing ultraviolet radiation and dissipating the energy as heat.


Park D.,Pusan National University | Park D.,Songwon Industrial Co. | Kobayashi D.,Gas 2 Inc | Suh H.,Pusan National University | And 2 more authors.
Journal of Applied Polymer Science | Year: 2012

Polyoxymethylene (POM) has been widely utilized in industry due to its light weight properties in engineering plastics. At present, POM applications are expanding into the car industry, especially in fuel tanks. Hindered alkyl phenol derivatives have been used as antioxidants for POM; however, these compounds are easily extracted by solvents. Two antioxidants with new structures (N,N'-triethylenedioxy-bis(3-tert-butyl-4-hydroxy-5-methylhydrocinnamamide) and N,N',N'-tris[(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyl-3-oxapentyl] melamine) were synthesized and characterized, and their performance as antioxidants for POM was investigated in the present study. The results revealed that N,N'-triethylenedioxy-bis(3-tert-butyl-4-hydroxy-5-methylhydrocinnamamide) has good heat aging resistance compared to existing antioxidants for POM, and N,N',N'-tris[(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyl-3-oxa-pentyl] melamine has good extraction resistance against solvents. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012. Source


Keck-Antoine K.,Songwon Industrial Co. | Kim J.,Songwon Industrial Co.
Journal of Vinyl and Additive Technology | Year: 2014

Organic alkyl and aryl phosphites are effective antioxidants and photostabilizers with applications in a wide range of polymers. The primary role of phosphites is to decompose hydroperoxide. However, aryl phosphites are also capable of reacting as antioxidants by affecting the kinetics. In particular, oligomer-type phosphites have a greater effect on polymer degradation because of their high compatibility, reactivity, and solubility with almost all polymers. Generally, phosphites are sensitive to hydrolysis. In order to overcome this hydrolytic sensitivity in phosphites, a novel hydrolytically stable oligomeric phosphite incorporating a sterically hindered aromatic alcohol (2,4-di-tert-butyl-6-methylphenol) that gives hydrolytic stability to the phosphite was synthesized and characterized, and its performance as an antioxidant for polypropylene was investigated. © 2014 Society of Plastics Engineers. Source

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