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    Home > Coatings News > Paints and Coatings Market > Overview of fine benzoic acid

    Overview of fine benzoic acid

    • Last Update: 2020-03-25
    • Source: Internet
    • Author: User
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    fine benzoic acid (PTA), the relative molecular weight is 166.13, the structure of HOOC (C6H4) COOH, at room temperature is a white powdered crystal, non-toxic flammable, if mixed with air within a certain limit of fire is burningHigh-purity PTA and eg-glycol (EG) glued to polyhecolate glycol (PET) can also react with 14-butyl glycol or 14-cyclhexane dimethyl acid to produce corresponding esters, mainly used in the production of polyesterPolyester fiber is the most important variety of synthetic fiber, accounting for nearly 80% of the total production of synthetic fiber in the world, polyester produced from polyester in China has been produced in the total production of synthetic fiber more than 80 proportionIn addition, polyester is also used in the production of non-fibre products non-fibre products consumption of PTA has recently grown rapidly, non-fibre field polyester consumption continues to grow, the current product is mainly used with ethylene glycol esterification polymerization production polyester long polyester fiber, widely used in textile, in addition to polyester is also used in film, paint, paint and polyester plastic productionPTA is more concentrated in the application, more than 90% of the world's PTA used in the production of polyphenyl ethylene glycol esters, the rest of the other part as polyphenylene paralytic acid (PTT) and polyphenylate acid butyl glycol ester (PBT) and other products raw materialsPTA production process can be divided into oxidation unit and hydrogenation refining unit two partsRaw material to xylene acetic acid as a solvent, under the action of the catalyst by air oxidation into coarse benzoic acid, and then by crystallization, filtration, drying as crude; Fine benzoic acid is the main raw material for the production of polyester fiber, resin, film and container resin, and is widely used in chemical fiber, container, packaging, film production and other fieldsPTA is made from xylene and xylene raw material for petroleumPTA is the raw material of polyester, polyester is the raw material of polyester, and 80% of chemical fiber is polyester, chemical fiber accounts for 36% of the textile industry raw materials share"
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