Examples of 'polyphosphoric' in a sentence
Meaning of "polyphosphoric"
Polyphosphoric is used to describe a substance containing multiple phosphoric acid molecules. It is often used in chemistry and industrial processes where such compounds are necessary
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- Used to describe polymeric phosphoric acids and their derivatives.
How to use "polyphosphoric" in a sentence
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polyphosphoric
Preference is given to polyphosphoric acid ethyl ester.
Polyphosphoric acid compositions having a reduced viscosity.
The mineral acid is preferably polyphosphoric acid.
In addition to the polyphosphoric acid an organosulfuric acid is added.
A most highly preferred solvent is polyphosphoric acid.
Polyphosphoric acid has different applications.
A preferred source of polyphosphoric acid is phospholeum.
These superphosphoric acids are the preferred polyphosphoric acids.
Polyphosphoric acid in an appropriate solvent.
A highly preferred solvent is polyphosphoric acid or methanesulfonic acid.
This is believed to result in the formation of polyphosphoric acid.
Polyphosphoric acids are used in organic synthesis for cyclizations and acylations.
Phosphoric acid and polyphosphoric acids.
Polyphosphoric acid approx.
Method and device for producing polyphosphoric acid.
See also
This reaction is carried out in polyphosphoric acid or polyphosphoric acid additionally containing diphosphorus pentaoxide.
Convenient alternative to polyphosphoric acid.
All these polyphosphoric acids can be polycondensation products formed from heating aqueous metaphosphoric acid.
These superphosphoric acids are the most advantageous polyphosphoric acids.
Cyclisation of the compound with polyphosphoric acid in sulfolane and heating affords the desired compound.
One particularly effective solvent for cellulose is polyphosphoric acid.
Examples of the dehydrating agent are polyphosphoric acid and concentrated sulfuric acid.
The flame retarding effect is based on the formation of polyphosphoric acid.
Polyphosphoric acids, whether or not chemically defined.
This is polymerized to polyphosphoric acid.
Polyphosphoric acids, esters with triethanolamine.
Ring closure is then effected by using hot polyphosphoric acid.
Sulfuric acid or polyphosphoric acid, and the like.
Examples of the condensing agent include dicyclohexylcarbodiimide and polyphosphoric acid.
The polymer or copolymer is dissolved in polyphosphoric acid to form a solution or dope.
The cyclization is conveniently carried out by heating the arylphenacylsulfide in polyphosphoric acid.
Mixtures of metaphosphoric acid and polyphosphoric acid may also be used.
The cyclisation can be carried out in presence of a cyclodehydrating agent such as polyphosphoric acid.
Examples of the dehydrating agent include polyphosphoric acid and phosphorus oxychloride.
The process of the invention may be used to convert phosphoric acid to polyphosphoric acid.
Of these, polyphosphoric acid is preferred.
This carboxylic acid product was then reacted with polyphosphoric acid.
In addition, the polyphosphoric acid may be reused many times.
The catalyst comprises the reaction product of polyphosphoric acid and alcohol.
Since the polyphosphoric acid serves as a solvent, no other solvent may be employed.
The product is then cyclized by means of polyphosphoric acid to give the ketone.
Polyphosphoric acid, phosphorus pentoxide or the like may be used as a dehydrating agent.
The last one was performed with sodium polyphosphate and polyphosphoric acid.
Disphosphorus pentoxide ; phosphoric acid and polyphosphoric acids, whether or not chemically defined.
The acid to be used in this reaction includes sulfuric acid and polyphosphoric acid.
By treating the relevant tetraamide with polyphosphoric acid, phenol or boron trifluoride or.
The reaction mixture was cooled to room temperature and decanted from the polyphosphoric acid.
The dehydrating agent includes polyphosphoric acid, methanesulfonic acid and sulfuric acid.
The pigment dispersant also has between one and two percent polyphosphoric acid.
Preferred are phosphoric and polyphosphoric acids, nitric or nitrous acid, and hydrogen chloride.
