10291-28-8

Usage

Uses

Used in Organic Electronics Industry:
2,5-bis(p-toluidino)terephthalic acid is used as a key component in the production of organic light-emitting diodes (OLEDs) for its ability to enhance electron transport and improve device performance.
2,5-bis(p-toluidino)terephthalic acid is also used as a material in the development of organic photovoltaics (OPVs) due to its strong electron-donating and accepting properties, which contribute to increased power conversion efficiency.
Used in Corrosion Inhibition Applications:
2,5-bis(p-toluidino)terephthalic acid is used as a corrosion inhibitor, leveraging its unique chemical properties to protect metal surfaces from degradation and extend the lifespan of materials in various industries.
Used in High-Performance Materials Development:
2,5-bis(p-toluidino)terephthalic acid is utilized as a component in the creation of high-performance materials, capitalizing on its distinctive chemical and physical properties to achieve enhanced characteristics such as durability, stability, and conductivity in specialized applications.

Upstream product

• 84-48-0 2-sulfo-anthraquinone 
• 6289-46-9 dimethyl 2,5-dioxocyclohexane-1,4-dicarboxylate 
• 106-49-0 p-toluidine 
• 114508-42-8 2,5-di-p-toluidino-terephthalic acid dimethyl ester 
• 13799-90-1 2,5-dichloroterephthalic acid 
• 27712-87-4 1,4-cyclohexanedione-2,5-di-carboxylic acid methyl ester 
• 62-53-3 aniline 
• 52944-79-3 3,3'-Dimethoxycarbonylpropanoic anhydride 

Downstream Products

• 980-26-7 C_.I_. Pigment Red 122 
• 1047-16-1 Quinacridone 
• 10228-01-0 5,12-dihydro-2-methylquino[2,3-b]acridine-7,14-dione 

Relevant academic research and scientific papers

Preparation method for quinacridone and derivatives of quinacridone

The invention relates to the field of synthesis of organic pigments and discloses a preparation method for quinacridone and derivatives of the quinacridone. The preparation method comprises the steps that dimethyl succinate generates sodium dimethyl succinylsuccinate (DMSS) through cyclic condensation under an effect of sodium methoxide, and then being acidized into DMSS; condensation reaction occurs between the DMSS and aniline or substituted aniline, an intermediate product generated during condensation is directly oxidized and dehydrogenated by sodium 3-nitrobenzene sulfonate to obtain an oxidative product; and finally coarse products of the quinacridone or the derivatives of the quinacridone are prepared from the oxidative product in a ring-closing mode under an effect of polyphosphoric acid, and finally finished products of the quinacridone or the derivatives of the quinacridone are obtained through pigmentation treatment.

Method for preparing 2,5-di(substituted) arylamino terephthalic acid

The invention relates to a method for preparing 2,5-di(substituted) arylamino terephthalic acid by oxidizing 2,5-di(substituted) arylamino-3,6-dihydro-terephthalic acid ester. Hydrogen peroxide is adopted as an oxidizing agent in the method; the hydrogen peroxide is capable of completely oxidizing matter to be oxidized (the reactant conversion rate is high), and has better selectivity (the purity and the yield of a target object are both higher); furthermore, the hydrogen peroxide is converted into water after being oxidized, and a reaction system has no byproducts formed by over oxidation. Therefore, the method for preparing the 2,5-di(substituted) arylamino terephthalic acid, provided by the invention, is economic, friendly to environment and easy to control in reaction.

Quinacridone nanoscale pigment particles

A nanoscale pigment particle composition includes a quinacridone pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized particles.

2,5-DI(METHOXYANILINO)TEREPHTHALIC ACID POLYMORPHS AND QUINACRIDONES REALIZED THEREFROM

2,5-di(p-methoxyanilino)terephthalic acid crystal types I and Il are made by controlling the pH during the recovery of the oxidized product of the condensation of dimethylsuccinyl succinate with p-methoxyaniline. The resulting 2,5-di(p- methoxyanilino)-terephthalic acid can be converted into 2,9-dimethoxyquinacridone or a solid solution thereof having controlled characteristics.

Quinacridone pigment compositions comprising unsymmetrically substituted components

The present invention relates to a novel quinacridone pigment compositions, a process using a mixed amine synthesis for the ultimate production of the compositions and to their use as colorants for pigmenting high molecular weight organic materials.

Process for the preparation of 2,5-diarylaminoterephthalic acids

A process for the preparation of 2,5-diarylaminoterephthalic acids by oxidation of 2,5-diarylamino-3,6-dihydroterephthalic acid esters using oxygen or oxygen-containing gases, preferably air, in alcoholic-alkaline or alcoholic-aqueous-alkaline solution or suspension in the presence of an oxygen-transferring agent and working up to give the 2,5-diarylaminoterephthalic acids, characterized in that the oxidation is carried out in the presence of quaternary ammonium compound.