Topas

Ethylene-cyclo-olefin copolymers have been known since 1954 (DuPont USP2 721 189) but these materials only became of importance in the late 1990s with the development of copolymers of ethylene and 2-norbomene by Hoechst and Mitsui using metallocene technology developed by Hoechst. The product is marketed as Topas by Ticona. By adjustment of the monomer ratios polymers with a wide range of Tg values may be obtained including materials that are of potential interest as thermoplastic elastomers. This section considers only thermoplastic materials, cyclo-olefins of interest as elastomers are considered further in Section 11.10. [Pg.280]

Topas, m. topaz, -fiuss, m. artificial topaz, topasgelb, a. topaz-yellow, topaz. Topasschorlit, m. pycnite (columnar topaz). Topf, m. pot jar, crock top. [Pg.448]

TOPAS Scattering curve evaluation program by N. Stribeck... [Pg.13]

This evaluation is performed in minutes using my computer program TOPAS. [Pg.106]

From experimental SAXS data of isotropic materials Q is determined by means of Eq. (7.25) (cf. p. 91). An interactive computer program (e.g., TOPAS) is very helpful, because several manual steps are involved. [Pg.149]

Thermoplastic molding applications for VDC copolymers, 25 726-727 Thermoplastic olefin polymer of amorphous structure (TOPAS), 16 113 Thermoplastic polyester bottles, recycling, 20 54-56... [Pg.942]

Tooth restorative resins, 8 333 Top (surface) driers, 9 147 Top- and bottom-blown basic-oxygen processes, 23 260 Topas, 70 180 Topaz... [Pg.958]

As said in the introduction there are many more polymers than can be discussed within the limits of this chapter, but we want to add just one example of a group of high-value polymers that is made using the same principles of coordination polymerisation as shown above for the commodity polymers. We mentioned metallocene catalysts that can be used to copolymerise ethene and norbomene to give Topas type products. [Pg.224]

Data sheets concerning Topas from Hoechst. 9. Cherdron, H Brekner, M-J. Osan, F. Angew. Makromol. Chem. 1994, 223,121. [Pg.227]

Klinman JP. 2003. The multi-functional topa-quinone copper amine oxidases. Biochim Biophys Acta 1647 131. [Pg.132]

M. Mure, S.A. Mills, J.P. Klinman, Catalytic mechanism of the topa quinone containing copper amine oxidases. Biochemistry 41 (2002) 9269-9278. [Pg.688]

S. Hirota, T. Iwamoto, S. Kishishita, T. Okajima, O. Yamauchi, K. Tanizawa, Spectroscopic observation of intermediates formed during the oxidative half-reaction of copper/topa quinone-containing phenylethylamine oxidase, Biochemistry 40 (2001) 15789-15796. [Pg.697]

FTree-FS 13 Roche Min 11 RECAP/TOPAS 1.00E+18 2D ligand 2D Feature-Tree... [Pg.272]

For optical applications requiring extreme clarity it is desirable to minimize silver streaking, and yellowing. For example, Topas 5013 can be modified pentaerythritol tetrastearate, pentaerythritol distearate, or zinc stearate in order to improve the optical properties (59). These blends are suitable for high precision optical applications. [Pg.57]

Topas Topas Advanced Polymers, Inc. Ethene norbornene copolymers... [Pg.65]

Apel , is obtained by Ziegler polymerization. It is available in film and resin form. The material exhibits a high density and a bulky structure. It is amorphous, optically isotropic and non polar (70). Topas is copolymerized from norbornene and ethylene using a metallocene catalyst. [Pg.65]

Tetrafluoro polymer (40) Topas COC Topas Advanced Poylmers... [Pg.67]

See also in sourсe #XX -- [ Pg.280 ]

See also in sourсe #XX -- [ Pg.406 ]

See also in sourсe #XX -- [ Pg.73 , Pg.91 ]

See also in sourсe #XX -- [ Pg.88 ]

See also in sourсe #XX -- [ Pg.67 ]

See also in sourсe #XX -- [ Pg.192 ]

See also in sourсe #XX -- [ Pg.192 ]

See also in sourсe #XX -- [ Pg.280 ]

See also in sourсe #XX -- [ Pg.73 , Pg.91 ]

See also in sourсe #XX -- [ Pg.280 ]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...