Examples of 'internal donor' in a sentence
Meaning of "internal donor"
internal donor: This refers to a person or entity that provides funds or resources from within an organization or group
How to use "internal donor" in a sentence
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internal donor
Internal donor for olefin polymerization catalysts.
Preferably the internal donor is dibutyl phthalate.
This document does not relates to a catalyst system containing a succinate as internal donor.
In the third titanation no internal donor was added.
The choice of internal donor determines the polydispersity index.
Suitable electron donors include both internal donor and external donors.
The preferred internal donor is a succinate or a mixture of a succinate and a diether.
Said external donor can be the same as or different from the internal donor.
Determination of internal donor content.
The internal donor or precursor thereof is added preferably to the solution of step a.
The external donor can be omitted if the internal donor is one of said diethers.
The external donor compound may be the same or different from the internal donor.
According to the invention the slightly soluble internal donor compound is preferably diethyl phthalate.
Thus a person skilled in the art will know what is meant by an internal donor.
In some reactions, both an internal donor and an external donor may be used.
See also
The internal donor used in the present invention is a phthalate, a diether or a blend of these.
Catalyst component according to claim 6 in which said internal donor is ethyl benzoate.
If the internal donor is one of these dieters, the external donors can be omitted.
Catalyst component according to claim 1 in which the internal donor is diisobutyl phthalate.
If the internal donor is one of these diethers, the external donors can be omitted.
Process according to claim 1, wherein the internal donor essentially consists of a succinate compound.
These external electron donor can be the same as, or different from, the internal donor.
Despite ongoing reforms, internal donor procedures remain complex and insufficiently flexible, impeding country-owned cooperation.
The higher the concentration, the more of the internal donor can be extracted.
The preferred internal donor ( ID ) is a succinate or a mixture of a succinate and a phthalate.
As catalyst a commercially available Ziegler-Natta polymerization catalyst with a phthalate as internal donor was used.
The internal donor ( ID ) or precursor thereof is added preferably to the solution of step a.
Composition and performance of exemplified catalysts Ex. Internal donor.
The amount of charged internal donor was such to charge a Mg / donor molar ratio of 6.
The solid component can also comprise an electron-donor compound, i.e. an internal donor.
The amount of charged internal donor was such to meet a Mg / donor molar ratio of 8.
The reaction product is heated to approximately 50°C and contacted with the internal donor.
Most preferably the internal donor is di-n-butyl phtalate.
The internal donor as defined above is preferably added in step ( 1 ) to said solution ( S1 ).
Into this solution, an internal donor can be added, if desired.
The internal donor is charged when the internal temperature reaches 40°C.
It is, however, most preferred that the internal donor is a diether only.
Typical amounts of internal donor are from 0.01 to 1 moles per mole of titanium.
It is especially preferred that the internal donor ( ID ) is a succinate only.
The amount of internal donor was such to have a Mg / donor molar ratio of 6.7.
Thereafter a compound forming the internal donor was added, the compound being dioctyl phthalate ( DOP ).
Ex . Internal donor.
Still more preferably the internal donor ( ID ) comprises, like is, diethylphthalate.
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