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Polyesters ethylene glycol

PET is the polyester of terephthalic acid and ethylene glycol. Polyesters are prepared by either direct esterification or transesterification reactions. In the direct esterification process, terephthalic acid is reacted with ethylene glycol to produce PET and water as a by-product. Transesterification involves the reaction of dimethyl terephthalate (DMT) with ethylene glycol in the presence of a catalyst (usually a metal carboxylate) to form bis(hydroxyethyl)terephthalate (BHET) and methyl alcohol as a by-product. In the second step of transesterification, BHET... [Pg.527]

In the preparation of the polyester, you will react ethylene glycol, a diol, with phthalic anhydride. In this activity, phthalic anhydride will react similarly to the way phthalic acid (1,2-benzenedicarboxylic acid) reacts, resulting in the formation of a polyester. Phthalic acid and ethylene glycol are the A and B units of the A-B polymer phthalic anhydride + ethylene glycol —> polyester. [Pg.181]

Some other example of condensation polymers are Dacron (a polymer of ethylene glycol), polyester (a polymer of p-terephthalic acid), Bakelite (a polymer of phenol and formaldehyde). [Pg.55]

Ethylene oxide Ethylene o2 7.5 270°C, 10-30bar, [Ag], C = 20%, S = 65-75% Heterogeneous, heterolytic UCC, Shell, ICI, Scientific Design Ethylene glycol, polyesters... [Pg.328]

Structopendant prepolymers generally have relatively high functionality, /pp, and a low molecular weight between cross links, M. A maleic anhydride-ethylene glycol polyester with a molecular weight of 1600 would have an /pp of 11, and a backbone of 116, if fully cross-linked. [Pg.177]

A different type of crosslinking is possible for esters with the diacids (or diols) containing double bonds in the molecule. This is more common for ester copolymers. For example, an isophthalic acid/fumaric acid/ethylene glycol polyester has the structure shown below ... [Pg.526]

Table II. Effect of Composition on Properties of Injection-Molded BDA/1,6-Hexanediol/Ethylene Glycol Polyesters... Table II. Effect of Composition on Properties of Injection-Molded BDA/1,6-Hexanediol/Ethylene Glycol Polyesters...
Table 13 2 lists the average commercial specifications of terephthalic acid and dimethyl terephthalate used to manufacture fibers. Terephthalic acid and its methyl ester are utilized chiefly in the form of ethylene glycol polyester for fibers, films, and resins. They are also used in the manufacture of polyesters of butylene glycol (PBT). Among the various applications is the manufacture of additives for lubricants, plasticizers and adhesives. Uses in Western Europe, the United States and Japan in 1984 are given in Table 13.3. This table also gives the. production- capacities -of. terephthalic. acid and dimethyl terephthalate in Western Europe, the United States and Japan in 1984. Table 13 2 lists the average commercial specifications of terephthalic acid and dimethyl terephthalate used to manufacture fibers. Terephthalic acid and its methyl ester are utilized chiefly in the form of ethylene glycol polyester for fibers, films, and resins. They are also used in the manufacture of polyesters of butylene glycol (PBT). Among the various applications is the manufacture of additives for lubricants, plasticizers and adhesives. Uses in Western Europe, the United States and Japan in 1984 are given in Table 13.3. This table also gives the. production- capacities -of. terephthalic. acid and dimethyl terephthalate in Western Europe, the United States and Japan in 1984.
Dimethyl terephthalate + ethylene glycol Polyester resin Ediylene glycol Various 320-570 Distillation of solvent and recovery of the polymer as a melt... [Pg.262]

Terephthalic acid, dioctyl ester. See Dioctyl terephthalate Terephthalic acid-ethylene glycol polyester. See Polyethylene terephthalate... [Pg.1375]

Kim, M.S. et al, 2004. Preparation of methoxy poly(ethylene glycol)/polyester diblock copolymers and examination of the gel-to-sol transition. Journal of Polymer Science Part A Polymer Chemistiy, 42(22), 5784—5793. [Pg.133]

Lukes, R. and Janda, M. (1959) Ethylene glycol polyester, CS87340. [Pg.270]

Anisic acid, a-carboxyl, polyester with ethylene glycol —, —, polyester with 1,6-hexanediol... [Pg.38]

Biphenyldicarboxylic acid, polyester with ethylene glycol 4,4 -Biphenyldicarboxylic acid, polyester with 1,4-butanediol —, polyester with 2,2 -(2,5-di-ter/-butyl- -phen)denedio3 )diethanol —, polyester with diethylene ycol —, polyester with ethylene glycol —, polyester with 1,6-hexanediol —, 2,2 -dimethyl-, polyester with ethylene ycol Brassylic add. See Tridecanedioic acid. [Pg.48]

Fig. 1 Effect of acidic catalysts on acetal-containing polyesters. , Dimethyl terephthalate-ethylene glycol polyester , dimethyl terephthalate-pentaerythritol acetal-ethylene glycol... Fig. 1 Effect of acidic catalysts on acetal-containing polyesters. , Dimethyl terephthalate-ethylene glycol polyester , dimethyl terephthalate-pentaerythritol acetal-ethylene glycol...
Polymeric Plasticizers [6]. Polymeric plasticizers are oligomers or polymers of molecular weight ranging from 600 to 8000. They include poly(ethylene glycol), polyesters, and polyepoxides. [Pg.25]

Ethylene glycol, polyester use, 479-481, 489 Ethylene glycol disorbate, polyester reactions, 507 Ethylene oxide, MA polycondensation, 482, 483 Ethylene sulfite, MA polycondensation, 483 Ethylenimine, MA polycondensation, 516 2-Ethylhexanoate peroxide, 293 2-Ethylhexenal, A-phenylmaleiamic Diels-Alder adduct, 110 2-Ethyl-l-hexene... [Pg.835]

Adipic Acid-Ethylene Glycol Polyester Polyol... [Pg.181]

The adipic acid-ethylene glycol polyester polyol represents a typical polyester polyol. This polyol is a product of the reaction of adipic acid with ethylene glycol as shown in Figure 7.4. [Pg.181]

Adipic acid-ethylene glycol polyester polyol is also used in making foams, adhesives, coatings, and so on. [Pg.183]

Adipic acid is directly used to synthesize adipic acid-ethylene glycol polyester (polyol) for polyurethane rubber use. [Pg.383]

Ethylene oxide is used to make ethylene glycol to react with adipic acid to form adipic acid-ethylene glycol polyester (polyol) for polyurethane applications. EO is used as a feedstock to synthesize ethylene carbonate, which is used to make HER for polyurethane chemistry. [Pg.442]

Aromatic ethylene glycol polyesters NMR Sequence distribution [241]... [Pg.287]

See other pages where Polyesters ethylene glycol is mentioned: [Pg.13]    [Pg.503]    [Pg.186]    [Pg.35]    [Pg.505]    [Pg.1297]    [Pg.3503]    [Pg.4334]    [Pg.56]    [Pg.38]    [Pg.64]    [Pg.417]   
See also in sourсe #XX -- [ Pg.868 ]

See also in sourсe #XX -- [ Pg.868 ]

See also in sourсe #XX -- [ Pg.809 ]

See also in sourсe #XX -- [ Pg.1234 ]

See also in sourсe #XX -- [ Pg.1139 ]



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Adipic Acid-Ethylene Glycol Polyester Polyol

Biodegradable Aliphatic Polyester Grafted with Poly(Ethylene Glycol) Having Reactive Groups and Preparation Method Thereof

Dimethyl terephthalate ethylene glycol polyester

Ethylene glycol dicarboxylic acid, polyesters

Polyesters glycols

Preparation of a Polyester from Ethylene Glycol and Dimethyl Terephthalate by Melt Condensation

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