Ch_322b_18.05

Ch_322b_18.05 - CO CO O = O CH 2 CHCH 2 CH 2 CH 2 CH 2 CH 3...

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Some Important Industrial Aromatic Acids The most important industrial aromatic acids are benzoic acid, phthalic acid and terephthalic acid: The industrial preparation of these organics involves the catalytic reforming of petroleum components (various straight-chain alkanes) into methylbenzenes, followed by oxidation of the methyl groups. COOH benzoic acid COOH COOH COOH COOH phthalic acid (1,2-benzenedicarboxylic acid) terephthalic acid (1,4-benzenedicarboxylic acid)
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Industrial Production of Aromatic Acids petroleum catalytic reforming CH 3 CH 3 CH 3 CH 3 CH 3 benzene o-xylene p-xylene [O] [O] [O] COOH COOH COOH COOH COOH
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Some Uses of the Aromatic Acids Phthalic acid is used to prepare a family of phthalate ester additives for paints and plastics:
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Unformatted text preview: CO CO O = O CH 2 CHCH 2 CH 2 CH 2 CH 2 CH 3 CH 3 CH 2 CHCH 2 CH 2 CH 2 CH 2 CH 3 CH 3 "dioctyl phthalate" a plasticizer annual production in the United States is close to 260 million pound Terephthalic acid is a very important monomer incorporated into a number of commercially important polyesters . COOH COOH + HOCH 2 CH 2 OH annual US production close to 8 billion lbs annual US production over 5 billion lbs ethylene glycol step-growth polymerization C-O-CH 2 CH 2-O-C-C-O-CH 2 CH 2-O-C-O = O O O C-O-CH 2 CH 2-O-C-O O C-O-CH 2 CH 2-O-C-O O etc. etc. fabricated into bottles (PET), films, and synthetic fibers brand names "dacron", "mylar"...
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This note was uploaded on 10/20/2009 for the course CHEM 322BL at USC.

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Ch_322b_18.05 - CO CO O = O CH 2 CHCH 2 CH 2 CH 2 CH 2 CH 3...

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