Polyfbutylene terephthalate

Figure 35 Example of random degradation mechanism thermolysis mechanism of polyfbutylene terephthalate) (PBT).

The authors thank Bernard Sillon for a gift of polyphenylquinoxaline and Jean Claude Wittmann for a gift of polyfbutylene terephthalate). 

Balabanovich AI, Zevaco TA, Schnabel W. Fire retardance in polyfbutylene terephthalate). The effects of red phosphorus and radiation-induced cross-links. Macromol. Mater. Eng. 2004 289 181-190. 

Figure 10.1.15. Result fora Py-GC/MS analysis of a polyfbutylene terephthalate-co-polyfbutylene glycol) terephthalate] sample. Pyrolysis done on 0.4 mg material at 600° C in He, with the separation on a Carbowax type column.

Another possibility for obtaining imide modified thermoplastic polyesters was to use as a monomer the hydroxy acid made from trimellitic anhydride and aminoethanol. Such a poly(ester-imide) was claimed for injection molding [240]. For the same use, poly(ester-imide)s containing aminophenol/trimellitic anhydride [241],imidised polyfbutylene terephthalate) [242] and a wholly aromatic poly(ester-imide) made from trimellitic anhydride, p-aminobenzoic acid, p-acetoxybenzoic acid, diacetoxybiphenyl and terephthalic and isophthalic acids are known, which showing optical anisotropy [243]. 

General Description of Spectra. Figure 5(a-c) shows the static C NMR solid state spectra of Hytrel 4056, 7246, and polyfbutylene terephthalate) obtained with cross polarization and dipolar decoupling. Each spectrum contains a broad carbonyl/aromatic resonance which extends from ca. 250 ppm upheld into the aliphatic region, an —OCHi— peak centered at ca. 70 ppm, and a peak due to —CH2 HiCH2— carbons at ca. 29 ppm. The intensity differences in the aliphatic region are due to relative differences in the amounts of hard and soft segments in the polymers. Other than these intensity differences, little information is availaUe directly from these static powder spectra. 

Vestodur Chem. Werke Hiils Polyfbutylene terephthalate)... 

It is pointed out in section 2.7.5 that studies of the line-shape of the spectrum can give information about motion in the approximate range lO" s > Tc > 10 s. Figure 5.24 shows the observed and calculated spectra for polyfbutylene terephthalate) deuterated at the middle two methylene units of the butylene group,... 

Fig. 10 Molecular formulas and semicrystaUine structure differences of polyfethylene terephthalate), PTT, and polyfbutylene terephthalate)...

Thermoplastics can be used as particulate toughening agents. Substances used in this way include polyfbutylene terephthalate), nylon 6 and polyfvinylidine fluoride). Toughness can be i ncreased by a factor of 6 by use of these particulates. 

Shelgaev and co-workers [60] found that increased thermal stability could be achieved by synthesising polyfbutylene terephthalate) (PBT) in the presence of a stabiliser package which included tris(nonylphenyl)phosphite and sodium hypophosphite. 

Volex 410 Polyfbutylene terephthalate), PBT glass/mineral Comalloy Inti. Corp. 

H. J. Radusch, Polyfbutylene terephthalate), in Handbook of Thermoplastic Polymers Homopolymers, Copolymers, Blends, and Composites (ed. S. Fakirov), Wiley-VCH Verlag GmbH, Weinheim, Germany, Ch. 8, p. 389-419, 2002. 

T. Matzuki and K. Azuma, Manufacture of polyfbutylene terephthalate) with low amount of terminal carboxy groups, Jpn Kokai Tokkyo Koho, JP 08 198,958,1996. 

M. Wada and T. Ichikawa, Efficient and economic manufacture of high molecular weight polyfbutylene terephthalate), Jpn Kokai Tokkyo Koho, JP 10 30,020,1998. 

F. Pilati, and M. Toselli, New catalysts for polyfbutylene terephthalate) synthesis 1. Titanium-lanthanides and titanium-hafnium systems. Polymer, 42 7511-7516,2001. 

H. J. Ludwig and R Eyerer, Influence of the processing conditions on morphology and deformation behavior of polyfbutylene terephthalate) (PBT), Polym. Eng. Sci., 28 143-146,1988. 

M. E. Nichols and R. E. Robertson, The origin of multiple melting endotherms in the thermal analysis of polymers, J. Polym. Sci., Polym. Phys. Ed.,30 305-307,1992. M. Yokouchi, Y. Sakakibara, Y. Chatani, T. Tadokoro, T. Tanaka and K. Yoda, Structures of two crystalline forms of polyfbutylene terephthalate) and reversible transition between them by mechanical deformation. Macromolecules, 9 266, 1976. 

E. J. Roche, R. S. Stein and E. L. Thomas, Electron microscopy study of the structure of normal and abnormal polyfbutylene terephthalate) spherulites,... 

H. Domininghaus, Polyfbutylene terephthalate), in Plastics and Their Properties, Springer, Berlin, Heidelberg, New York, pp. 772-785,1999. 

C. Berti, E. Binassi, M. Colonna, M. Fiorini, T. Zuccheri, S. Karanam and D. ]. Brunelle, Improved dispersion of clay platelets in polyfbutylene terephthalate) nanocomposite by ring-opening polymerization of cyclic oligomers effect of the processing conditions and comparison with nanocomposites obtained by melt intercalation, /. Appl. Polym. Sci., 114 3211-3217,2009. 

G. Lanciano, A. Greco, A. Maffezzoli and L. Mascia, Effects of thermal history in the ring opening polymerization of CBT and its mixtures with montmo-rillonite on the crystallization of the resulting polyfbutylene terephthalate), Thermochim. Acta, 493 61-67,2009. 

J. Chang and M. K. Mun. Synthesis and characterization of polyfbutylene terephthalate) nanocomposite fibers thermo-mechanical properties and morphology, /. Appl. Polym. Sci., 100 1247-54,2006. 

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