There is a smaller, but nevertheless significant, demand for terephthalic acid in the production of polybutylene terephthalate and several other engineering polymers.
22.
Whinfield and Dickson discovered how to condense terephthalic acid and ethylene glycol to yield a new polymer which could be drawn into a fibre.
23.
It was contrived then to make purified terephthalic acid ( PTA ) and polyester filament yarn ( PFY ) facility at Manali in Chennai.
24.
For example, some fully aromatic nylons ( known as " aramids " ) are polymerized with the addition of diacids like terephthalic acid ( ?
25.
Sorona is a co-polymer of 1, 3-propanediol ( obtained by fermentation ) and petroleum-derived terephthalic acid ( TPA ) or dimethyl terephthalate ( DMT ).
26.
Replacing terephthalic acid ( right ) with isophthalic acid ( center ) creates a kink in the PET chain, interfering with crystallization and lowering the polymer's melting point.
27.
Amoco may be more insulated than some of its competitors from chemical price fluctuations, largely because it is a major supplier of purified terephthalic acid, a raw material used to make polyester, and paraxylene.
28.
Polymer prices rose 6 percent to 7 percent in the first half, according to Ashok Rout, analyst at Credit Lyonnais Securities India Pvt, while prices for purified terephthalic acid, used to make artificial fibers, rose 31 percent.
29.
The radical chain reaction proceeds through a series of intermediates, starting with the oxidation of " p "-xylene to " p "-toluic acid ( PT ), 4-carboxybenzaldehyde ( 4-CBA ), and finally to the terephthalic acid ( TA ) product.
30.
Terephthalic acid is used as a filler in some military smoke grenades, most notably the American M83 smoke grenade and M90 vehicle-employed smoke grenade, producing a thick white smoke that acts as an obscurant in the visual and near-infrared spectrum when burned.
