There are three arene substitution isomers of benzenedicarboxylic acid ( C 6 H 4 ( COOH ) 2 ) & ndash; the " ortho " isomer phthalic acid, the " meta " isomer isophthalic acid, and the " para " isomer terephthalic acid:
32.
HMF can be converted to 2, 5-dimethylfuran ( DMF ), a liquid that is a potential biofuel with a greater energy content than bioethanol . 2, 5-furandicarboxylic acid, which has been proposed as a replacement for terephthalic acid in the production of polyesters.
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The monomers are terephthalic acid ( HOOC-C 6 H 4-COOH ) and ethylene glycol ( HO-CH 2-CH 2-OH ) but the repeating unit is-OC-C 6 H 4-COO-CH 2-CH 2-O-, which corresponds to the combination of the two monomers with the loss of two water molecules.
34.
Partially oriented yarn ( POY ) prices may jump 3 percent this week on expectations prices of its raw materials, ethylene glycol and purified terephthalic acid, will climb 7 percent in the second quarter, according to Steven Liao, an analyst at HG Asia Securities Ltd.
35.
According to The Times, the chargesheets say the company and officials from banks including Standard Chartered and Societe Generale collaborated to change the date on letters of credit for importing 1.8 billion rupees ( $ 500 million ) of purified terephthalic acid, a chemical for making polyester.
36.
While price of the main raw materials-- purified terephthalic acid ( PTA ) and mono ethyl glycol ( MEG )-- had also crashed, the impact of that would only be felt in January-March 1998, since it takes time for the contracted raw materials to actually arrive in India.
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While Amoco's year will be great, its fourth-quarter profit will be hurt by continued weak prices for paraxylene and purified terephthalic acid, or PTA . The Chicago-based company is the world's leading producer of PTA and paraxylene, which are used to make products such as plastic soda bottles.
38.
According to The Times, the chargesheets say the company and officials from banks including Standard Chartered and Societe Generale collaborated to change the date on letters of credit for importing 1 . 8 billion rupees ( $ 500 million ) of purified terephthalic acid, a chemical for making polyester.
39.
""'p "-Toluic acid "'( "'4-methylbenzoic acid "') is a substituted benzoic acid with the formula CH 3 C 6 H 4 COOH . It is an intermediate in some industrial processes for the oxidation of " p "-xylene to terephthalic acid which is used in the manufacture of polyethylene terephthalate.
40.
Under the terms, DuPont has agreed to sell Alpek its U . S . terephthalic acid business and its polyethylene terephthalate container resins business, along with their associated manufacturing assets at the Cape Fear site in Wilmington, N . C ., and the Cedar Creek site in Fayetteville, N . C.
