Korea polymer processing

Yongsok Seo Polymer Processing Laboratory, Korea Institute of Science and Technology, Seoul, Korea... 

Polymer-Engineering A catalytic process for making diesel fuel from waste plastics. Developed by C. Koch at Alphakat GMBH, Germany, and now offered by Polymer-Engineering, Germany. A zeolite catalyst is used, and the product is called NanoFuel Diesel. Plants have been built in Germany, Mexico, Japan, and South Korea. 

Cho HN, Hong JM, Lee HW, Ko YC, Choi IS. Process for preparing polyethylene naphthalate based polymers by using NDC A or its derivates. US patent 6 323 305, assigned to Korea Institute of Science and Technology, Seoul, KR 2001. 

I.S. Choi and K.R. Yoon, Process of preparing a biodegradable polymer using an enzyme catalyst and a biodegradable polymer prepared through the process, US Patent 7 642 075, assigned to Korea... 

The thermoplastic polymer used was PEN with an intrinsic viscosity of 0.97 dL/g, supplied by Hyosimg Corp., Korea. The nanotubes used were multi-walled CNT (degree of purity > 95%) synthesized by a thermal chemical vapor deposition process, purchased from Iljin Nanotech Co., Korea. According to the supplier, their length and diameter were in the range of 10-50 pm and 10-30 nm, respectively, indicating that their aspect ratio reached 1000. 

In this patented process from the Korea Research Institute of Chemical Technology, continuous slivers or twisted yarns of different polymers, but especially of polyamide-polyimide copolymers, are claimed to be obtained by electrospinning first onto one stationary or rotating plate or conductive mesh collector, where the charges on the fibers are neutralized, and then continuously collecting the fibers from the first onto a second rotating collector. 

Fig. 12.9 (a) SEM images of pure PA-6 and PA-6/boehmite nanofibers, (b) DOP penetration of processed and discharged filter media, (c) Thermally stimulated current spectra of as-spun hybrid nanofibers near room temperature, (d) Filtration efficiency of the filter media with different basis weight as a function of particle size ((a) and (b) Reprinted with permission from [24]. 2010 The Polymer Society of Korea and Springer Netherlands, (c) and (d) Reprinted with permission from [67], 2013 Elsevier)... 

Y. Lee, J. Kim, and Y. Son. 1999. The preparation of organic/inorganic conducting polymer composite films using in-situ sol-gel process. Polymer (Korea) 23(3) 443-449. 

Uses Antifoam for polymer dispersions, PVC, final applies., processing, pump over, demonomerization, polymerization, textiles, metalworking, surfactant cones. defoamer in food-contact paper/paperboard Regulatory FDA 21CFR 176.210 BGA, Korea, and MITI compliance listed in TSCA, EINECS, DSL, AlCS Properties 20% act. 

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