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Polymers high melting point

Polymerization to Isotactic Polymers high melting point COC-Copolymerization of Ethene and Cyclic Olefins to transparent polymers high glass transition point... [Pg.92]

The high degree of crystallization and the thermal stability of the bond between the benzene ring and sulfur are the two properties responsible for the polymer s high melting point, thermal stability, inherent flame retardance, and good chemical resistance. There are no known solvents of poIy(phenyIene sulfide) that can function below 205°C. [Pg.1021]

Nylon-12,12. Nylon-12,12 [36497-34-4] [36348-71-7] was introduced into the marketplace by Du Pont in the late 1980s (174). This polymer possesses very low moisture absorption, high dimensional stabihty, and excellent chemical resistance, with a moderately high melt point (T = 185° C)... [Pg.236]

Figure 17.1 and Table 17.1 give melting points for metals and ceramics and softening temperatures for polymers. Most metals and ceramics have high melting points and, because of this, they start to creep only at temperatures well above room temperature... [Pg.170]

Polyolefins with branched side chains other than P4MP1 have been prepared Figure 11.14). Because of their increased cohesive energy, ability for the molecules to pack and the effect of increasing chain stiffness some of these polymers have very high melting points. For example, poly-(3-methylbut-l-ene) melts at about 240°C and poly-(4,4-dimethylpent-l-ene) is reported to have a melting point of between 300 C and 350°C. Certain cyclic side chains can also... [Pg.274]

The high intermolecular attraction leads to polymers of high melting point. However, above the melting point the melt viscosity is low because of the polymer flexibility at such high temperatures, which are usually more than 200°C above the Tg, and the relatively low molecular weight. [Pg.487]

Hexamethylphosphoramide (HMPT), 185 HFBPA-based poly(arylene ether)s, 362 HFCs. See Hydrofluorocarbons (HFCs) High-impact polystyrene (HIPS), 219 High-melting polymers, 33 High-melting-point fiber-forming polyesters, 19... [Pg.585]

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See also in sourсe #XX -- [ Pg.78 ]



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