Methyl terephthalate

Figure 10 Reaction schemes for formation of PET from terephthalic acid and ethylene glycol (top) and di-methyl terephthalate and ethylene glycol (bottom).

Figure 15 shows this same expanded region when di-methyl terephthalate is used as the monomer. The only difference is the sharp single peak labelled g, which arises from residual methyl ester end groups. This resonance sits on top of the triplet arising from the -CH2OH (f) end (at 400 MHz) and, therefore, deconvolution software is used to measure these residual methyl ester ends. [Pg.189]

Figure 15 Expansion (3.60-5.20 ppm) of ethylene glycol region of the H NMR spectrum of PET, when di-methyl terephthalate has been used as the monomer.

Fig. 1. Biodegradation of dimethyl terephthalate (DMT) by Pasteurella multocida Sa in the presence of ethanol. Ester hydrolysis of DMT involves a transesterification of mono-methyl terephthalate (MMT), and the formation of monoethyl terephthalate (MET).

Problem 16.56 Indicate the reactions involved and show the structures of the following condensation polymers obtained from the indicated reactants (a) Nylon 66 from adipic acid and hexamethylene diamine (b) Nylon 6 from e-caprolactam (c) Dacron from methyl terephthalate and ethylene glycol (d) Glyptal from glycerol and terephthalic acid (e) polyurethane from diisocyanates and ethylene glycol. ... [Pg.371]

Benzobisthiazole random copolymers (X) [38] were also prepared using 2-methyl terephthalic acid and terephthalic acid with l,4-dimercapto-2,5-diamino-1,4-benzene dihydrochloride. Various copolymers provided materials with a wide range of crosslink densities. High quality fibers with spin draw ratios as high as 50 to 1 were obtained by dry-jet wet spinning of anisotropic polymerization mixtures. Heat treatment of the fibers was carried out in a tube oven... [Pg.270]

In one case, methyl terephthalic acid, obtained in two steps from p-formyl-benzoic acid, was converted to the phenacyl bromide (340) in the usual manner. Alkylation of 2,5-diamino-4,6-dihydroxypyrimidine with (340) with subsequent cyclization produced the dihydrooxazine pteroate ester (341), which was hydrolyzed to (342) [173]. Coupling (342) with diethyl L-glutamate using isobutyl chloroformate [ 174] yielded the diester (343a) which was then saponified to the dihydrooxazine FA analogue without the C-9,N-10 bridge (343b). [Pg.153]

Lactones reduce more easily than acyclic esters. Lactone 2 with an activated C—O bond is hydrogenolyzed to dimethyl 2-methyl-terephthalate over Pd ... [Pg.275]

Oxidation of the remaining methyl group to methyl terephthalate ... [Pg.289]

Acetic acid, (4-carboxyphenyl)- 1,4-Benzenedicarboxylic acid, monomethyl ester 4-(Carbomethoxy)benzoic acid p-Carboxy-a-toluic acid EINECS 216-849-7 Homoterephthalic acid HSDB 5849 Hydrogen methyl terephthalate 4-Methoxycarbonylbenzoic acid Methyl hydrogen terephthalate Methyl terephthalate Monomethyl terephthalate NSC 210838 Terephthalic acid, monomethyl ester. Used as a plasticizer. [Pg.423]

Methyl terephthalate Methyl 1,4-benzenedicarboxylate CgHjO, 1679-64-7 180.168 nd (w) 222 subi 230 ... [Pg.498]

Bis [4-(vinyloxy) methyl] cyclohexyQ methyl] terephthalate. See Bis [[[4-(ethenyloxy) methyl] cyclohexyl] methyl] terephthalate BIT. See 1,2-Benzisothiazolin-3-one Bixa Orellana. SeeAnnatto (Bixa orellana) extract Bixin. SeeAnnatto (Bixa orellana) Annatto (Bixa orellana) extract BKF. See2,2 -Methylenebis (6-t-butyl-4-methylphenol)... [Pg.1000]

Chloro-3,5-xylenol p-Chloro-m-xylenol. See Chloroxylenol CHMVE terephthalate. See Bis [[[4-(ethenyloxy) methyl] cyclohexyQ methyl] terephthalate... [Pg.1038]

Synonyms Bis [4-(vinyloxy) methyl] cyclohexyl] methyl] terephthalate CHMVE terephthalate... [Pg.510]

Bis [[[4-(ethenyloxy) methyl] cyclohexyl] methyl] terephthalate 1,4-Cyclohexanedicarboxylic acid Dicyclopentenyl acrylate Dicyclopentenyl methacrylate Dimethyl maleate 2-Hydroxyethylethylene urea Hydroxypropyl methacrylate Jsooctyl acrylate 2-Phenoxyethyl methacrylate 3-[(Prop-1-en-2-yl) phenyl] prop-2-yl isocyanate N-Vinyl formamide monomer, concrete impregnation Methyl methacrylate monomer, concrete resurfacing Dicyclopentenyl methacrylate monomer, conductive polymers... [Pg.5475]

Ethylene dioxythiophene monomer, emulsion polymerization PEG-5 methacrylate Sodium allyloxy hydroxypropyl sulfonate monomer, EPDM elastomers Ethylidene-2-norbornene monomer, epoxy coatings Bis [f[4-(ethenyloxy) methyl] cyclohexyl] methyl] terephthalate Bis (4-vinyl oxy butyl) hexanediyibiscarbamate monomer, EVA copolymers Vinyl acetate... [Pg.5476]

On the other hand, Martinez-Utrilla and eoworkers studied soluble polymer bound photosensitizers and eoneluded that the sensitization effieieney diminishes when the material it is bound to a polymer. The same eonelusion was reaehed by Tsuehida and eoworkers who studied eleetron transfer in a heteroexeimer system of N-ethylearbazole, a donor, and poly(vinyl methyl terephthalate), an aeeeptor. Behavior of the ion-radieals that form was eompared with model eompounds. The experiments showed that these ion-radieals do not transfer readily from the polymer ehains to aeeeptors. By eomparison, anion-radieals formed on the model monomerie or dimer systems transferred easily. [Pg.73]

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