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Liquid crystalline polyester

This polyester class comprises amorphous high-Tg copolyesters, known as amorphous polyarylates, and semicrystalline polyesters that often exhibit anisotropic hquid crystalline (LC) melts. Liquid crystalline polyesters are often termed as polyester LCPs. [Pg.25]

TABLE 2.13 Topical Properties of Ardel D-100 Bisphenol-A Polyarylate and of Liquid Crystalline Polyesters Vectra A-950 and Xydar SRT-500... [Pg.48]

A procedure similar to that given below for wholly aromatic liquid crystalline polyesters can be used (see Section 2.4.4.2). The inherent viscosity of the resulting polymers were ca. 0.6 dL/g (0.5 g/dL in phenol-o-dichlorobenzene at... [Pg.112]

Linear polyurethanes, 26 Linear step-growth polymerizations, 13 Lipase-catalyzed polyesterifications, 83 Lipases, 82, 84 catalytic site of, 84 Liquefied MDIs, 211, 226-227 Liquid carbon dioxide, 206 Liquid-castable systems, 201 Liquid crystal devices (LCDs), alignment coating for, 269-270 Liquid crystalline aromatic polyesters, 35 Liquid crystalline polyesters, 25, 26, 48-53... [Pg.587]

Weathering tests, 245 Wholly aromatic liquid crystalline polyesters, degradation of, 38 Wholly aromatic polyamides, 136-137, 139 synthesis of, 184-189 Wholly aromatic polyesters, 25-26, 32 copolymerization and, 35 synthesis of, 71-72... [Pg.604]

Lyocell process, environmental issues related to, 22 279-280. See also Courtaulds lyocell process Lyondell s process, 23 345 Lyophilic colloids, 7 283-284 Lyophilization, 28 716 Lyotropic liquid crystalline polyesters,... [Pg.539]

While no direct evidence of liquid crystallinity in PET-BB copolymers has been reported, the high-BB-content copolymers have been shown to possess morphologies similar to those of liquid crystalline polyesters [40], and show major changes in both melt relaxation times and fiber tensile moduli, suggestive of structural organization in a frustrated liquid crystalline polymer (LCP) (Table 6.3 and Figure 6.4) [41, 42],... [Pg.252]

The field of liquid crystal polyesters (LCP) is expanding very rapidly and has been reviewed [22], The area of chiral liquid-crystalline polyesters has also been researched [32]. Several companies have started to exploit their use on a commercial scale. The high-melting LCP s are expected to find use as replacements for metals, ceramics, composites, etc., in such areas as telecommunications equipment, aerospace, automotive parts, computers, and electrical/electronic components. [Pg.55]

Asrar. J.. Thomas, O., Zhou, Q. and Blumstein, A. Thermotropic liquid crystalline polyesters Structure property relationship. Proc. 28th Macromol. Symp. IUPAC, U. Mass., Amherst, MA, p. 797, 1982... [Pg.56]

James DF and Walters K, "A Critical Appraisal of Available Methods for the Measurement of Extensional Properties of Mobile Systems" in Collyer AA (Ed), "Techniques in Rheological Measurement", Chapman Hall, London, 1993. Jin S, "Synthesis and Characterization of Side-Chain Liquid Crystalline Polyesters and Polyurethanes", PhD Thesis, Delft, 1995. [Pg.596]

Hvilsted, S., Andruzzi, E, Kulinna, C., Siesleg H. W., and Ramanujam, P. S. Novel side-chain liquid crystalline polyester architecture for reversible optical storage. Macromolecules 28, 2172 (1995). [Pg.173]

Cheng LP, Dwan AH, and Gryte CC. Wholly aromatic thermotropic liquid crystalline polyesters of 4,4 -biphenol, substituted biphenols, and l,l -binaphthyl-4,4 -diol with 3,4 -benzophenone dicarboxylic acid. J. Polym. Sci. Polym. Phys. B 1995 33 211-225. [Pg.59]

Thermotropic liquid crystalline polyesters (ICP s) were prepared from the dimethyl ester of 4,4 -bi-pheriyldicarboxylic acid (BDA) and aliphatic glycols containing 2 to 10 methylene units and ccnpared with similar trans-4,41 -stilbenedicarboxyl ic acid (SDA)... [Pg.16]

The lowest cost process for preparing all-arcmatic liquid crystalline polyesters involves the reaction of aromatic carboxylic acids with acetates of aromatic hydroxy ocnpounds a recent history (2) describes the development of these ICP s. Because aoetic acid is evolved in the process and reaction temperatures are above 300°C, expensive corrosion-resistant reactors must be installed for ccranercial production. In cur latest paper (2) of this ICP series, we described a number of aliphatic-aromatic ICP s which can be produced in conventional polyester reactors and injection molded to give plastics with very high mechanical properties, heat-deflection temperatures (HDT s), and solvent resistance. These ICP s (la) were prepared by the reaction of the dimethyl ester of... [Pg.16]

All-Aromatic Liquid-Crystalline Polyesters of Phenylhydroquinone with Ether and Ketone Linkages... [Pg.46]

OBERETAL. Chemical Heterogeneity in Liquid-Crystalline Polyesters 221... [Pg.221]

See other pages where Liquid crystalline polyester is mentioned: [Pg.26]    [Pg.38]    [Pg.48]    [Pg.113]    [Pg.617]    [Pg.2]    [Pg.19]    [Pg.19]    [Pg.448]    [Pg.271]    [Pg.308]    [Pg.310]    [Pg.469]    [Pg.73]    [Pg.170]    [Pg.139]    [Pg.794]    [Pg.25]    [Pg.42]    [Pg.90]    [Pg.129]    [Pg.198]    [Pg.232]    [Pg.237]   
See also in sourсe #XX -- [ Pg.18 , Pg.448 ]

See also in sourсe #XX -- [ Pg.18 , Pg.448 ]

See also in sourсe #XX -- [ Pg.117 ]



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