Results 11 to 20 of about 16,657 (260)

Copolyamides of nylon-4,6 and nylon-4,T [PDF]

open access: yes, 1989
Copolyamides of nylon-4,6 and nylon-4,T were prepared by a two-step method: (1) a prepolymerization in an autoclave (40 min at 210°C) and (2) a postcondensation in the solid state (4 h, 260°C). On these materials was studied the melting behavior with DSC,
Aalto, S., Gaymans, R.J., Maurer, F.H.J.
core   +13 more sources

Investigation of Crystal Size Distribution in Purification of Terephthalic Acid from Polyester Textile Industry Waste by Reactive Crystallization

open access: yesIndonesian Journal of Chemistry, 2023
The purification of terephthalic acid recovered from an alkali-reduction wastewater by reactive crystallization was investigated. The crude terephthalic acid was reacted with sodium hydroxide solution to form a salt of disodium terephthalate, then ...
Bekti Marlena   +2 more
doaj   +1 more source

Acetolysis of waste polyethylene terephthalate for upcycling and life-cycle assessment study

open access: yesNature Communications, 2023
To reduce environmental pollution and reliance on fossil resources, polyethylene terephthalate as the most consumed synthetic polyester needs to be recycled effectively.
Yuantao Peng   +5 more
doaj   +1 more source

Aerobic oxidation of C-H bonds to carboxylic acids enabled by decatungstate photocatalysis

open access: yesGreen Synthesis and Catalysis, 2021
Direct aerobic oxidation of p-xylene using cobalt, manganese and bromide ion catalyst system, named the Amoco method, is a fundamentally important process to produce terephthalic acid in industry.
Jing Liu   +5 more
doaj   +1 more source

Recovery of benzoic acid from residue formed in crude terephthalic acid production process using recrystallization method [PDF]

open access: yesشیمی کاربردی روز, 2014
In this work we intend to recovery of benzoic acid from residue formed in crude terephthalic acid production process in the Tondgooyan Petrochemical Company.
Vahid Rezaei, Seyed Ali Akbar Sajadi
doaj   +1 more source

Comparative life cycle assessment of the biochemical and thermochemical production routes of biobased terephthalic acid using Miscanthus in the Netherlands

open access: yesCleaner Environmental Systems, 2022
The transition from a fossil-based to a biobased chemical sector requires developing technologies to produce biobased chemicals that can replace the current market needs already supplied by fossil-based chemicals.
Michelle Gian   +2 more
doaj   +1 more source

Engineering Comamonas testosteroni for the production of 2-pyrone-4,6-dicarboxylic acid as a promising building block

open access: yesMicrobial Cell Factories, 2023
Background Plastics are an indispensable part of our daily life. However, mismanagement at their end-of-life results in severe environmental consequences.
Tom Delmulle   +6 more
doaj   +1 more source

Synthesis and Characterization of some New Amic acid and Imides and study the Biological Activity

open access: yesTikrit Journal of Pure Science, 2023
This study includs the synthesis of some new Amic acid and Imides, starting from the esters [S1] of Terephthalic acid which then converted to its hydrazide [S2] then to amic acid derivatives [S3-S7] and finally with imides [S8-S12].
Salwa Abd Al-Satar Jabbar
doaj   +1 more source

Degradation of terephthalic acid by a newly isolated strain of Arthrobacter sp.0574

open access: yesSouth African Journal of Science, 2013
Terephthalic acid is an important industrial chemical but its production typically generates 3–10 tons of wastewater, which is a significant source of pollution.
Yi-Mei Zhang   +3 more
doaj   +1 more source

Addition of Di(trimethylsilyl) Phosphite to Schiff Bases of 2,5-Diformylfuran [PDF]

open access: yes, 2011
A series of 2,5-Furanyl-bis-(aminomethylphosphonic Acids) has been synthesized by the addition of di(trimethylsilyl) phosphite to azomethine bond of achiral Schiff bases derved from 2,5-diformylfuran.
Ciechańska, Magdalena   +3 more
core   +1 more source

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