Telene

Polyoctenamer trans-ocX.en.e mbber) is manufactured in Europe by Hbls AG at 12,000 t/yr under the trade name Vestenamer. Components for the manufacture of polydicyclopentadiene (PDCPD), a Hquid mol ding resin, are produced by Hercules in the United States (13,600 t/yr), by Teijin in Japan (3000 t/yr), and by Shell in Europe, under the trade name Metton they are also produced by Goodrich in the United States and Japan under the trade name Telene. 

Of course, the ultimate goal is to combine the ADCT package with superior cell head and base gaskets, Telene cell heads, and Tibac titanium base covers to achieve the Long Life Diaphragm Cell. 

In a first approach, it can be assumed that for silica oi alumina as ad-soibenl, and for sample sizes of less than 10 g/g of adsorljenl the telen-... 

In the second approach to self-assembly of polymer-silica nanocomposites, polymerizable surfactants are employed both to direct self-assembly into ordered mesophases and to serve as organic monomers which can be subsequently polymerized. For instance, Brinker et al. developed nonionic surfactants incorporating diacy-telene groups which could be polymerized upon irradiation by UV light.68 69 Similarly, poly(thiophene)70 and poly(pyrrole)71 have been successfully integrated into silica nanostructures in this manner. Importantly, this in situ polymerization produces isolated molecular wires, rather than clustered bundles of conductive polymer.70... 

When cyclic alkenes are utilized as starting materials the metathesis reaction will lead to long chain polymers and/or cyclic oligomers [103, 104, 107, 108]. If a strained cyclic alkene is employed the reaction is effectively irreversible. Industrially cyclooctene (polymer Vestenamer), 2-norbornene (polymer Norsorex), and dicyclopentadiene (polymer Telene, Metton, Pentam) are used as monomers. Upon polymerization cyclooctene and 2-norbornene yield straight chain polymers while dicyclopentadiene also allows cross-linking (Scheme 5.56). 

Telene Process BE Goodrich dicyclopentadiene polydicyclopentadiene (Telene ) [R3NH]2y 6.Mo,Oy/ Et2AlCl/ROH/SiCl4 ... 

RIM technology has been developed mainly by the BFGoodrich Co., under the trade name Telene, and by Hercules Inc., under the trade name Metton. The latter is now produced by Metton America, Inc. in Houston, USA, who have also licensed their process to the Teijin-Metton Co. in Japan. 

In the Telene process the procatalyst is a tetrakis(tridodecylammonium)-octamolybdate, activated with a mixture of Et2AlCl, propanol and SiCU. Up to 10% trimer of cyclopentadiene is added to the monomer to increase crosslinking in the polymer, while the trimer also lowers the melting point of DCPD. The of the product is typically 150 °C. BFGoodrich has licenced their process to the Japanese company Nip n Zeon Co., which produces it under the trade name Pentem. In the USA Helene RIM polymers are presently produced by APT, LLC, a joint venture of BFGoodrich and Advanced Polymer Technologies, LLC, recently renamed Cymetech, LLC. 

The sheer activity of these new nickel norbornene polymerization catalysts and their very rapid polymerization rates makes them potential catalysts for a new nor-bornene-RIM (reaction injection molding) technology to afford a saturated, oxidatively stable RIM part rather than the unsaturated ROMP (ring-opening metathesis polymerization) polymer that is the current commercial Telene or Metton . Fig. 4.6 illustrates the concept and also exemplifies the very rapid polymerization rates that are observed. 

Modified and reproduced with permission from M. J. Telen. Erythrocyte Blood Group Antigens Polymorphisms of functionally Important Molecules. Seminars in Hematology 33, 302 (1996). 

M. J. Telen Red blood cell surface adhesion molecules Their possible role in normal human physiology and disease. Seminars in Hematology 37, 130 (2000). 

Parise LV, Telen MJ. Erythrocyte adhesion in sickle cell disease. Cur Hematol Rep 2003 2 102-108. 

MacIntyre E, Willerford D, Morris SW. Non-Hodgkin s lymphoma molecular features of B cell lymphoma. In Schechter GP, Berliner N, Telen MJ, eds. Hematology 2000, 2000 180-204. 

Telene. [BFGoodrich/Spec. Polymers] Engineered resin systems RIM and thermoplastics. 

ALTERNATIVE NAME, TRADE NAMES Poly(l,3-cyclopentylenevinylene), Norsorex , Telene (copolymer)... 

Telene BF Goodrich Company, Specialty Pol5rmers Division,... 

Upon entering the forebrain, the medial olfactory tract subdivides and innervates terminal fields in the contralateral olfactory bulb, telen ... 

ADCT includes increased active area. Advanced technology cathodes (ATC ), Energy saving anodes (ESAtM), Polyramix diaphragms, zero-gap operation, titanium base covers (Tibac ) and Telene ... 

Electrolytic cell Cell covers Chlorine/General FRP, Telene... 

---