Examples of 'trimellitic acid' in a sentence
Meaning of "trimellitic acid"
Trimellitic acid: A type of organic compound used in various chemical processes
How to use "trimellitic acid" in a sentence
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trimellitic acid
Trimellitic acid or trimellitic anhydride are most preferred.
Examples of these carboxylic acids are trimellitic acid.
Trimellitic acid or trimellitic anhydride and trimethylol propane are preferred.
Process for the preparation of trimellitic acid.
Trimellitic acid anhydride is the preferred according to the present invention.
Examples of suitable tricarboxylic acids are citric acid or trimellitic acid.
Expressed as trimellitic acid.
Suitable tricarboxylic acids are for example citric acid or trimellitic acid.
The preferred tricarboxylic acids are trimellitic acid or the anhydride thereof.
In smaller amounts it is possible to use polycarboxylic acids such as trimellitic acid.
Other potential materials include trimellitic acid and a dehydrating material.
Trimellitic acid monoanhydride is the preferred monoanhydride according to the present invention.
Examples of suitable such acids include trimellitic acid or pyromellitic acid.
Examples of aromatic polycarboxylic acids are the isomers of benzenedicarboxylic acid and trimellitic acid.
Examples of the polyalkyl amide include trimellitic acid tristearyl amide.
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Preferably trimellitic acid and / or its anhydride are used.
Examples of such suitable acids include trimellitic acid and pyromellitic acid.
Numerous catalytic oxidation processes are known in order to react pseudocumene to give trimellitic acid.
Examples for tricarboxylic acids include citric acid or trimellitic acid which can optionally be comprised.
The invention relates to a novel process for the catalytic oxidation of pseudocumene to trimellitic acid.
The general structure of trimellitic acid is given below,.
Preferably, trimellitic acid monoanhydride is used according to the present invention.
Another substitution can be a triacid anhydride acid chloride such as trimellitic acid chloride.
Additionally, trimellitic acid deactivates the oxidation catalysts by complexing to cobalt and manganese.
There may be employed higher polycarboxylic acids such as trimellitic acid and tricarballylic acid.
Pyromellitic anhydride or trimellitic acid can, for example, be used as the polyfunctional carboxylic acid.
Also, there may be employed higher polycarboxylic acids such as trimellitic acid.
Higher polycarboxylic acids, such as trimellitic acid and tricarballylic acid may also be employed.
Particular preference is given to adipic acid, isophthalic acid and optionally trimellitic acid.
Compounds of the trimellitic acid family, of formula,.
In this oxidation, the naphthalene ring itself tends to be oxidized to form trimellitic acid.
Of these, trimellitic acid is preferred.
The resulting solids were analyzed for trimellitic acid and by-products.
Examples of suitable aromatic polycarboxylic acids include isophthalic acid, phthalic acid, terephthalic acid, trimellitic acid.
Therefore, an oxidation process that produces trimellitic acid is self-deactivating.
Example 2 g of trimellitic acid chloride anhydride were dissolved in 400 ml of paraxylene.
As trifunctional components there may be mentioned trimethylolpropane, pentaerythritol, trimellitic acid and pyromellitic acid.
Trimellitic acid anhydride chloride ;.
Moreover, manganese shows a larger tendency to form a complex with trimellitic acid than cobalt does.
Trimellitic acid monoanhydride ;.
Also, there may be employed higher carboxylic acids such as trimellitic acid and tricarballylic acid.
Trimellitic acid in a concentration of 0.1 mol % as a cross-link agent was added for polymerization for comparison.
Higher-functional carboxylic acids or anhydrides thereof, such as trimellitic acid and trimellitic acid anhydride.
Examples of suitable polyols and polyacids are glycerol, hexanetriol, trimethylolethane, trimethylolpropane, pentaerythritol and trimellitic acid.
Also, higher carboxylic acids can be used, for example, trimellitic acid and tricarballylic acid.
The crude trimellitic acid obtained was dehydrated directly, according to Example 1, to give trimellitic anhydride.
However, the mother liquor also contains undesirable reaction side products such as trimellitic acid.
A process according to any of Claims 1 to 6 wherein pseudocumene is oxidized to trimellitic acid.
Such impurities include, for example, isophthalic acid, phthalic acid and trimellitic acid.
Suitable polybasic acids include succinic acid, adipic acid, citric acid, and trimellitic acid.
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