Examples of 'tetracarboxylic' in a sentence
Meaning of "tetracarboxylic"
tetracarboxylic (noun) - describes a compound or molecule that contains four carboxylic acid groups
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- Having four carboxyl groups
How to use "tetracarboxylic" in a sentence
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tetracarboxylic
The dianhydrides of aromatic tetracarboxylic acids are preferred.
The tetracarboxylic acid porphyrin was analyzed by titration.
Dianydrides of aliphatic tetracarboxylic acids are also suitable.
Potassium permanganate oxidizes it to pyridazine tetracarboxylic acid.
Preference is given to tetracarboxylic dianhydrides containing aromatic rings.
Polyimide is produced by polycondensation of diamines with tetracarboxylic acid anhydrides.
Preferred tetracarboxylic dianhydrides are those containing aromatic rings.
It is preferred to use tetracarboxylic dianhydrides.
These tetracarboxylic anhydrides are commercially available.
Suitable reactants to produce the tetracarboxylic acids are lower alkyl olefins.
The tetracarboxylic acid component was observed in the form of a methyl ester.
The preferably used polyfunctional compounds are dianhydrides of aromatic tetracarboxylic acids.
The dianhydrides of the tetracarboxylic aromatic acids are the preferred additives.
The acid dianhydride monomer may include an aliphatic or aromatic tetracarboxylic dianhydride.
Tetracarboxylic dianhydrides with an ester group may be used together to provide flexibility.
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Examples of these include reaction products of tetracarboxylic dianhydride with diamines.
The tetracarboxylic acid anhydrides may preferably include aromatic tetracarboxylic acid anhydrides.
It may also be possible to employ a mixture of tetracarboxylic dianhydrides having different structures.
The polyfunctional compound is preferably selected from the dianhydrides of aromatic tetracarboxylic acids.
Tetracarboxylic acids such as butanetetracarboxylic acid and pyromellitic acid ;.
They are typically prepared by the reaction of a tetracarboxylic acid dianhydride with a diamine.
The polyfunctional compounds are selected in preference from the dianhydrides of aromatic tetracarboxylic acids.
Hereinbelow, specific examples of aliphatic tetracarboxylic acid dianhydrides and diamines are enumerated.
These are in particular dicarboxylic, tricarboxylic or tetracarboxylic acids.
Examples of tetracarboxylic dianhydrides include pyromellitic dianhydride, benzophenone tetracarboxylic dianhydride, and biphenyl tetracarboxylic dianhydride.
Where appropriate it is also possible to use a blend of tetracarboxylic dianhydrides of different structure.
The polycarboxylic acid of this invention is preferably a dicarboxylic acid, a tricarboxylic acid or a tetracarboxylic acid.
However, admixture of the aromatic tetracarboxylic acid can occur in the extruder.
Instead, compounds preferably functioning as chain extenders are dianhydrides of aromatic tetracarboxylic acids.
Very particularly, the aliphatic diamine and the tetracarboxylic acid are solely present in salt form.
Aliphatic tetracarboxylic acid dianhydride, diamine compounds,.
The acids or the esters of the benzhydrol and benzophenone tetracarboxylic acids are preferred.
The molecule is a tetracarboxylic acid with four - COOH groups.
The polyamic acid can be prepared through a reaction between a tetracarboxylic dianhydride and a diamine.
The most preferred tetracarboxylic dianhydride is pyromellitic dianhydride ( PMDA ).
The polyamic acid can be obtained through polymerization of a tetracarboxylic acid dianhydride and a diamine.
The derivative of the tetracarboxylic acid preferably has from 6 to 38 carbon atoms.
Maleic anhydride dimerizes in a photochemical reaction to form cyclobutane tetracarboxylic dianhydride CBTA.
The tetracarboxylic acid preferably has from 6 to 26 carbon atoms.
It may be a dicarboxylic, tricarboxylic or tetracarboxylic acid.
Several compounds are available, e.g., a tetracarboxylic acid porphyrin, cobalt ( II ) phthalocyanine or dilithium phthalocyanine.
More preferably, the dianhydride monomer is benzophenone tetracarboxylic dianhydride.
Process according to claim 1, wherein the dianhydride of a tetracarboxylic acid is pyromellitic dianhydride.
A common name for Matrimid * is the polymer with diaminophenylindane and benzophenone tetracarboxylic dianhydride.
Particularly preferred polycarboxylic acids are citric acid, butane tetracarboxylic acid, iminodisuccinic acid and salts thereof.
In one embodiment, component ( c ) will be at least one tricarboxylic or tetracarboxylic acid.
Usually, it is obtained by reacting a diamine component and a tetracarboxylic acid component.
When m is 4, R is a tetravalent radical of an aliphatic, cycloaliphatic or aromatic tetracarboxylic acid ;.
The invention thus further provides a salt of tetracarboxylic acid and diamine,.
The unsaturated carboxylic reagent include mono, di, tri or tetracarboxylic reagents.
