Examples of 'polycondensation catalyst' in a sentence
Meaning of "polycondensation catalyst"
polycondensation catalyst: It refers to a substance that aids or speeds up the polycondensation process, which is a chemical reaction that leads to the formation of polymers
How to use "polycondensation catalyst" in a sentence
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polycondensation catalyst
The polycondensation catalyst contains no antimony as an ingredient.
Of moles of metal element used as polycondensation catalyst.
A polycondensation catalyst must be necessarily used.
Various metal compounds are known as the polycondensation catalyst.
The polycondensation catalyst must be used without fail.
They may be catalyzed by any polycondensation catalyst of the prior art.
The polycondensation catalyst of the invention contains no antimony as an ingredient.
The effect may be further enhanced by the addition of a polycondensation catalyst.
Process for producing a polycondensation catalyst for producing polyester.
The invention further relates to polyester obtained using the polycondensation catalyst.
The second polycondensation catalyst according to the invention may be prepared by another method.
It is advantageous to use other catalysts concurrently with the above polycondensation catalyst.
The first polycondensation catalyst according to the invention can also be obtained by another method.
Polyethylene terephthalate can be thus manufactured by using the foregoing polycondensation catalyst.
Polycondensation catalyst for producing polyester and method for producing polyester using the same.
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It is a further object of the invention to provide a method for producing such a polycondensation catalyst.
Polycondensation catalyst for polyester production and production of polyester using polycondensation catalyst for polyester production.
The literature shows that zinc was assumed to be a poor polycondensation catalyst compared with antimony.
The polycondensation catalyst can also catalyze the reactions to form AA precursors.
The catalyst residue comprises at least a portion of the at least one first polycondensation catalyst.
Thus the established polycondensation catalyst in the PTA process is antimony.
The other metal catalyst can be used concurrently with the above polycondensation catalyst.
Typically, polycondensation catalyst is also added to the process.
The method for preparing the polyester resin may further include adding a polycondensation catalyst.
First, the first polycondensation catalyst according to the invention is described.
Commercial polyester processes commonly use antimony compounds as polycondensation catalyst and phosphorous compounds as stabilizers.
Next, the second polycondensation catalyst according to the invention is described.
The dried product was then disintegrated to provide a polycondensation catalyst D as a comparative example.
Therefore, a polycondensation catalyst which takes the place of them is strongly desired.
The aggregate was disintegrated to provide a polycondensation catalyst A of the invention.
As the polycondensation catalyst of polyethylene terephthalate, an antimony compound is most widely used.
Catalytically effective amount of at least one polycondensation catalyst M according to the invention.
As such a polycondensation catalyst for producing polyesters, antimony trioxide is heretofore widely known.
A method according to claim 27 wherein the polycondensation catalyst is antimony trioxide.
Moreover, the polycondensation catalyst of the invention is not poisonous and hence safe.
A polymer blend according to claim 7 wherein the polycondensation catalyst is antimony trioxide.
Therefore, a polycondensation catalyst does not always need to be added when polycondensation is carried out.
The phosphorus compound constituting the polycondensation catalyst of the invention includes e . g.
As indicated above, the polycondensation is preferably carried out in the presence of a polycondensation catalyst.
The method of claim 1, wherein the polycondensation catalyst consists of an antimony species.
Polycondensation catalyst for the production of polyesters, and polyester production method using same.
Furthermore, in recent years, an aluminum compound is proposed as a polycondensation catalyst of polyethylene terephthalate.
As such a polycondensation catalyst for producing polyester, antimony trioxide has been heretofore widely used.
About 10 g of a preparation comprising an amino silane and a tin polycondensation catalyst is then added.
The mixture may also comprise a polycondensation catalyst especially such as phosphorus-based catalysts.
A titanium compound has been proposed as a substitute for such heavy metal-based polycondensation catalyst.
When a polycondensation catalyst is not used, the reaction time is likely to become disadvantageously long.
Polycondensing a molten polyester polymer composition in the presence of a polycondensation catalyst composition comprising antimony species,.
Thus, polycondensation catalyst A of the invention was obtained.
When the BHPT is subjected to polycondensation, it is preferred to use a polycondensation catalyst.
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Examples of using Polycondensation
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The polycondensation product is a molten polymer or prepolymer
Synthesis of polyesters is generally achieved by a polycondensation reaction
These polycondensation reactions can be accelerated by catalysis
Examples of using Catalyst
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The substance was a catalyst containing copper acetylide
A catalyst for innovations in sustainable forest management
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