Lexan, structure

Leuprolide, structure of, 1056 I.evorotatory, 295 Lewis, Gilbert Newton. 8 Lewis acid, 57-58 examples of, 58 reactions of, 57-58 Lewis base, 57, 59-60 examples of, 59 reactions of, 59-60 Lewis structure, 9 resonance and, 43 Lexan, structure and uses of, 819,... 

Not all synthetic polymers are used as fibers Mylar for example is chemically the same as Dacron but IS prepared in the form of a thin film instead of a fiber Lexan is a polyester which because of its impact resistance is used as a shatterproof substitute for glass It IS a polycarbonate having the structure shown... 

Write the structure of Lexan. Show at least two complete repeat units of the pol Tner. 

Lexan is made from diphenyl carbonate and bisphenol A. Draw the structure of its repeating unit... 

The general structure of a polycarbonate is written —[O—R—O — (C=0)-] -, as explained in Sec. 2 (Fig. 2). R may represent either an aromatic or an aliphatic base structure, and in practice both homopolymers and copolymers can exist, in which mixed aromatic/aliphatic functionality occurs. The most common polycarbonate is the bis-phenol A type polycarbonate, known commercially as Lexan, which has the following chemical structure ... 

Lexan, a polycarbonate, is a condensation copolymer formed between carbonic acid and bisphenol A. Draw the structure of the dimer. Hint Water (circled) is eliminated when the bond between the monomers forms. 

The GE Advanced Materials operation includes high-performance engineered plastics, structured products silicones and high-purity quartzware. The company s range of engineering resins includes Cycolac ABS, Cycoloy PC/ABS blend, Geloy, Lexan PC, Noryl, high temperature Ultem polyetherimide, Valox PBT, Xenoy and Xylex polymer blends. 

Lewis Structure A method of indicating the assignment of valence electrons in an atom, molecule, or ion by representing them as dots placed around symbols, which represent the cores, or kernels, of the atoms. (Whitten KW, Davis RE, Davis E, Peck LM, Stanley GG (2003) General chemistry. Brookes/Cole, New York) Lexan General Electric s trade name for their polycarbonate resins produced by reacting bisphenol A and phosgene, the first commercial PC resins. See also Polycarbonate Resin. 

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