1,2,4,5-benzenetetracarboxylic Anhydride

JAMMARK INTERNATIONAL TRADINGE(ZIBO) CO., LTD. is one of the most professional manufacturers and suppliers of 1,2,4,5-benzenetetracarboxylic anhydride in China. If you're going to buy high quality 1,2,4,5-benzenetetracarboxylic anhydride made in China, welcome to get more information from our factory. For price consultation, contact us.

1,2,4,5-benzenetetracarboxylic Anhydride Product Application

Pyromellitic dianhydride is mainly used in polyimide resin, polyimide film, synthetic

resin crosslinking agent, high temperature resistant insulating varnish, powder coating

matting agent, epoxy resin curing agent and PVC plasticizer.

Product Properties

The Effect of Space Velocity on 1,2,4,5-benzenetetracarboxylic Anhydride
The oxide catalyst made of ceramic ring as the carrier and V-Mo-PTi (titanium tetrachloride

method) as the active component has a higher reaction yield and lower CO ₂ content in the

exhaust gas at a space velocity of 6000h 'under similar temperature and concentration

conditions, as shown in Table 1. The raw material has a low oxidation rate of toluene, good

catalyst activity, and high selectivity.

The Effect of Reaction Temperature on Activity
The oxide catalyst with ceramic ring as the carrier and V-Mo-PTi as the active component

has a higher yield and better activity at a temperature of 455 ℃ under the same conditions
of space velocity and load.

Due to the low temperature, the deep oxidation is relatively low, and the CO ₂ content in

the exhaust gas is low, resulting in a higher product concentration.But if the temperature

is too low, it is easy to generate by-products; Excessive temperature can lead to deep

oxidation and the formation of by-products such as maleic anhydride andCO ₂.

Product Package

25kg/drum or according to the customers' demand.
Storage: Stored in the dry and ventilated inside storeroom, prevent direct sunlight, 

slightly pile and put down

1,2,4,5-benzenetetracarboxylic anhydride (BTCA) is a cyclic dianhydride that is commonly

used in the production of high-performance polymers. It is a white crystalline solid that is

insoluble in water but soluble in most organic solvents, including acetone, benzene, and

chloroform.

The main application of BTCA is in the production of polyimides, which are high-temperature

-resistant polymers with excellent chemical and mechanical properties. These polymers are 

used in a wide range of industries, including aerospace, electronics, and automotive.

Factory Display

In the production of polyimides, BTCA is typically reacted with an aromatic diamine,

such as 4,4'-diaminodiphenyl ether (ODA), to form the corresponding polyimide. This

reaction is usually carried out in a solvent, such as N-methylpyrrolidone (NMP), and

requires high temperatures and long reaction times to achieve a high degree of

conversion.

One of the advantages of using BTCA in the production of polyimides is that it allows

for the formation of highly crosslinked polymers, which results in improved thermal and

mechanical properties. Additionally, BTCA-based polyimides have good chemical

resistance and can withstand exposure to harsh environments, such as high temperatures

and corrosive chemicals.In addition to its use in polyimide production, BTCA is also used

as a crosslinking agent in the manufacture of epoxy resins and as a curing agent in the

production of polyester resins. It is also used as a raw material for the synthesis of other

specialty chemicals, including fluorescent dyes and pigments.

Overall, 1,2,4,5-benzenetetracarboxylic anhydride is an important intermediate in the

production of high-performance polymers and specialty chemicals. Its unique properties

make it an attractive choice for a wide range of applications, and ongoing research is likely

to uncover new and innovative uses for this versatile compound.