Thermoplastic copolyesters

Thermoplastic copolyester elastomers are generally block copolymers produced from short-chain aUphatic diols, aromatic diacids, and polyalkjlene ether-diols. They are often called polyesterether or polyester elastomers. The most significant commercial product is the copolymer from butane-l,4-diol, dimethyl terephthalate, and polytetramethylene ether glycol [25190-06-1J, which produces a segmented block copolyesterether with the following stmcture. 

Polyether-based thermoplastic copolyesters show a tendency toward oxidative degradation and hydrolysis at elevated temperature, which makes the use of stabilizer necessary. The problem could be overcome by incorporation of polyolehnic soft segments in PBT-based copolyesters [31,32]. Schmalz et al. [33] have proposed recently a more useful technique to incorporate nonpolar segments in PBT-based copolyesters. This involves a conventional two-step melt polycondensation of hydroxyl-terminated PEO-PEB-PEO (synthesized by chain extension of hydroxyl-terminated hydrogenated polybutadienes with ethylene oxide) and PBT-based copolyesters. 

The effect of °Co y-ray irradiation on the mechanical properties, surface morphology, and fractography of blends of plasticized PVC and thermoplastic copolyester elastomer, Hytrel (E.I. Du Pont de Nemours Company, Inc., Wilmington, Delaware), have been studied by Thomas et al. [445]. Radiation has two major effects on the blend cross-linking of the Hytrel phase and degradation of PVC phase. Both effects are found more prominent at higher radiation dose. 

Guenther, K.H. (1990) Thermoplastic copolyester elastomer binder for propellants. Eur. Patent EP 358,845 Chem. Abstr., (1990) 112, 237798k. 

E-TPV Ethylene acrylate Thermoplastic copolyester (COPE) Dupont... 

Thermoplastic copolyesters are condensation block copolymers based on a crystalline polyester hard segment and an amorphous long-chain polyether soft s ment. The hard segment, for example, formed... 

Most TPEs fall in one of six categories, listed in order of increasing cost and performance styrenic block copolymers, polyolefin blends (TPOs), elastomeric alloys, thermoplastic polyurethanes (TPUs), thermoplastic copolyesters, and thermoplastic polyamides [3]. 

Styrene/butadiene polymer Copernica cerefera wax Copernicia cerifera wax. See Carnauba (Copernica cerifera) wax Copherol 1250. See d-a-Tocopheryl acetate Copherol F-1300. See D-a-Tocopherol Copisil . See Bentonite Copo 1500 Copo 1502 Copo 1505 Copo 1507 Copo 1712C Copo 1721. See Styrene/butadiene polymer Copolyester elastomer thermoplastic Copolyester, thermoplastic elastomer. See Polyester elastomer, thermoplastic Copolymer 186 Copolymer 186-85. See Castor oil, dehydrated... 

Properties M.p. 320 C Uses Thermoplastic copolyester for elec./electronics applies., lighting, telecommunications, aerospace, automotive, fiber optics, extrusion, inj. molding, connectors, bobbins, relays, motor components, sockets, imaging and sensor devices, food pkg. sports equip., fishing line, tennis rackets, high performance rope Manuf./Distrib. Idemitsu Petrochem. Mitsubishi Chem. http //www.m-kagaku. co.jp/index en.htm] N i ppon Petrochems. Polyplastics Sumitomo Chem. http //www.sumitomo-chem. co.jp... 

Apec KU 1-9320 f[Bayer AG http //WWW. bayer-ag. de, http //www. bayer. com] Polyester elastomer, thermoplastic Synonyms COPE Copolyester elastomer thermoplastic Copolyester, thermoplastic elastomer TPE-E... 

The Veriflex PSMP is a two-part resin system. Part A is composed of styrene, divinyl benzene and vinyl neodecanoate. Part B is composed of benzoyl peroxide. The chemical stmcture for each component has been shown in Figure 3.2. The thermoplastic copolyester (CP) is composed of isopthalic acid, terepthalic acid and butane-1,4-diol. The chemical structure for each component is shown in Figure 6.11. 

Bexloy V Thermoplastic copolyester elastomer blend E. I. du Pont de Nemours... 

Kodar PETG PETG, a thermoplastic copolyester of 1,4 cyclohexylene glycol and mixture of iso- and terephthalic acids Eastman Chem. 

In 1995, BASF announced the development of a biodegradable thermoplastic copolyester based on starch feedstock. A plasticizer reportedly is blended on-line with the copolyester to form a material which is antistatic, has good toughness, and good elongation at break. In 1999, BASF listed Ecoflex as the trade name for their biodegradable polyesters. ... 

Thermoplastic copolyester elastomers are multiblock copolymers built up from so-called short crystallizable hard segments and long flexible segments. Owing to such chemical structure, TPEEs exhibit unusual combination of thermoplastic and elastomeric behavior. Physical and mechanical properties of these copolymers strongly depend on the chemical composition and the molecular structure... 

Keyiuords Thermoplastic copolyester elastomers, polyfether ester)s, polyfester ester)s, morphology, mechanical properties, biodegradation, TPEE blends, TPEE recycling... 

This chapter summarizes the preparation and properties of thermoplastic copolyester elastomers (TPEE), which belong to a commercially relevant and fundamentally interesting class of polymeric materials. TPEE belong to the class of thermoplastic elastomers... 

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