Examples of 'polyphosphoric acid' in a sentence
Meaning of "polyphosphoric acid"
polyphosphoric acid: A type of acid known for its ability to dehydrate carbohydrates, among other chemical properties. It is commonly used in organic synthesis and various industrial applications
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- Any of several ill-defined polymers of orthophosphoric acid; they are viscous, hygroscopic liquids
How to use "polyphosphoric acid" in a sentence
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polyphosphoric acid
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.
This is believed to result in the formation of polyphosphoric acid.
A highly preferred solvent is polyphosphoric acid or methanesulfonic acid.
Polyphosphoric acid in an appropriate solvent.
Method and device for producing polyphosphoric acid.
Polyphosphoric acid approx.
Convenient alternative to polyphosphoric acid.
This reaction is carried out in polyphosphoric acid or polyphosphoric acid additionally containing diphosphorus pentaoxide.
One particularly effective solvent for cellulose is polyphosphoric acid.
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Examples of the dehydrating agent are polyphosphoric acid and concentrated sulfuric acid.
The flame retarding effect is based on the formation of polyphosphoric acid.
Cyclisation of the compound with polyphosphoric acid in sulfolane and heating affords the desired compound.
Ring closure is then effected by using hot polyphosphoric acid.
Of these, polyphosphoric acid is preferred.
This is polymerized to polyphosphoric acid.
Since the polyphosphoric acid serves as a solvent, no other solvent may be employed.
The polymer or copolymer is dissolved in polyphosphoric acid to form a solution or dope.
Examples of the condensing agent include dicyclohexylcarbodiimide and polyphosphoric acid.
Examples of the dehydrating agent include polyphosphoric acid and phosphorus oxychloride.
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.
In addition, the polyphosphoric acid may be reused many times.
This carboxylic acid product was then reacted with polyphosphoric acid.
In this context polyphosphoric acid comprises compounds, which are linear condensation products of orthophosphoric acid.
The product is then cyclized by means of polyphosphoric acid to give the ketone.
The reduced viscosity polyphosphoric acid composition of claim 1, wherein the additive is a tall oil polyamine.
The catalyst comprises the reaction product of polyphosphoric acid and alcohol.
The acid is preferably polyphosphoric acid and / or methanesulfonic acid, and is more preferably polyphosphoric acid.
The last one was performed with sodium polyphosphate and polyphosphoric acid.
In the preferred embodiment, the acid is polyphosphoric acid which has three hydroxyl groups.
The process of the invention may be used to convert phosphoric acid to polyphosphoric acid.
Unexpectedly, however, the combination of polyphosphoric acid and lime provided the greatest strength increase.
The acid to be used in this reaction includes sulfuric acid and polyphosphoric acid.
A solution of polyphosphoric acid in ethylene glycol is added as in Example 1.
The reaction mixture was cooled to room temperature and decanted from the polyphosphoric acid.
Similar features for acid-containing solvents other than polyphosphoric acid will be recognized by a skilled artisan.
Of polyphosphoric acid are added to 10 mmol of the compound obtained in the previous Step.
The solvent is preferably a mineral acid and is more preferably polyphosphoric acid or methanesulfonic acid.
Polyphosphoric acid ( PPA ) is used as catalyst and absorbent for ammonia produced during the reaction.
This solution was obtained by mixing orthophosphoric acid and polyphosphoric acid in the proper ratio.
The amount of polyphosphoric acid is equivalent to 402 mg of phosphorous.
The pigment dispersant also has between one and two percent polyphosphoric acid.
Catalytic reduction of this product followed by polyphosphoric acid ( PPA ) cyclization gave the desired tetralone.
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Examples of using Polyphosphoric
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Preference is given to polyphosphoric acid ethyl ester
Polyphosphoric acid compositions having a reduced viscosity
The mineral acid is preferably polyphosphoric acid
Examples of using Acid
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Put citric acid in the inner container
He later admitted that he did it while tripping on acid
I was so busy pissing acid on that little shit
