Rusar Aramid

I. V. Slugin, G. B. Sklyarova, A. I. Kashirin, and L. V. Tkacheva. Rusar para-aramid fibers for composite materials for constraction applications. Fibre Chemistry, 38 25-26, 2006. 

A small amount of p-aramid fiber (Armos and Rusar) is produced in Russia. Both are copolymers based on diaminophenylbenzimidazole—a unique but expensive monomer. 

The basic development and the first commercial introduction of aramid materials were done by DuPont, which continues to be the largest producer. MPDI fiber products (staple, continuous filament, yarn, and floe) under the trademark Nomex are produced by DuPont in the United States and Spain. The only other major MPDI producer is Teijin, with its fiber product Teijinconex produced in Japan. The situation is very similar with the PPTA manufacturers. The first and largest manufacturer, DuPont, produces essentially all product forms except films. DuPont s PPTA fibers are known under the trademark Kevlar , p-Aramid fiber is also produced in Ireland and Japan. The other producer of PPTA is Teijin Co., which produces two basic fibers Twaron based on PPTA, and Technora based on the ODA-PPTA copolymer. A small amount of p-aramid fibers (Armos and Rusar ) are produced in Russia, both being based on SVM copolymer [6]. 

Figure 8.1. Overview of high performance fibers mechanical properties. PET = poly(ethylene terephthal-ate), UHMWPE = ultra high molecular weight polyethylene, PBO = poly(benzoxazole), M5 = PIPD or poly[di-imidazo-pyridinylene-(dihydroxy phenylene)]. The p-aramids included in the area are Kevlar, Twaron, Technora and SVM (Armos, Rusar) fibers. The latter fiber tjipe accounts for the high mod-ulus/high tenacity area of aramids (Adapted from ref. [6]). For chemical structures see Scheme 8.1...

It is worth noting that the better performance of the Armos and Rusar fibers comes at very elevated price related with the high monomer costs, lower productivity spinning process and large energy consumption. These products apparently still do not meet the Western standards as far as quality and uniformity are concerned [45] but nevertheless could be a basis for future p-aramid fiber improvements. 

Slugin I V, Sklyarova G B, Kashirin A I and Tkacheva I V (2006) Rusar p-aramid fibers for composites materials with construction application, Fiber Chemistry 38 25-26. 

---