Examples of 'trimethylaluminum' in a sentence
Meaning of "trimethylaluminum"
trimethylaluminum (noun) - a chemical compound used in organic synthesis and various industrial applications. It is a source of the trimethylaluminum group in organic reactions
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- The trimethyl organometallic compound of aluminium (CH₃)₃Al
How to use "trimethylaluminum" in a sentence
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trimethylaluminum
Considerable volatile trimethylaluminum was seen in the trap.
Those methylalumoxanes most preferred contain lower levels of trimethylaluminum.
Trimethylaluminum is preferred.
They are formed by controlled hydrolysis of aluminum alkyls such as trimethylaluminum.
Trimethylaluminum is extremely reactive with water which makes a uniform reaction difficult to achieve.
Generally the fumed silica is dried using heat and trimethylaluminum.
Trimethylaluminum is abbreviated as TMA and is provided as a counter example.
The resulting methylaluminoxane product is usually a mixture of methyl aluminoxane and trimethylaluminum.
MMAO may be produced by the hydrolysis of trimethylaluminum and a higher trialkylaluminum such as triisobutylaluminum.
When used singularly the trialkyl aluminum preferred for use in forming the alumoxane is trimethylaluminum.
The TMA compound is desirably trimethylaluminum or triethylaluminum.
This catalyst solution was then added slowly into the silica previously treated with trimethylaluminum.
TMA is trimethylaluminum.
Preferred cocatalysts include triethylaluminum, trimethylaluminum and TIBAl.
In particular, trimethylaluminum and triisobutylaluminum are preferably used.
See also
For some embodiments, it is preferred that methylalumoxanes contain lower levels of trimethylaluminum.
Of these compounds, trimethylaluminum is most preferred.
The aluminoxane co-catalyst gives improved activity over the trimethylaluminum co-catalyst.
Trimethylaluminum may be added as needed as a scavenger of water, oxygen . and other adventitious impurities.
A process according to claim 6, wherein said trialkylaluminum in said solution consists essentially of trimethylaluminum.
Among them, triisobutylaluminum is preferable, and a mixture of trimethylaluminum and tributylaluminum may be used.
Preferably the scavenger is selected from the group of triisobutylaluminum, trihexylaluminum, triisopropylaluminum, triethylaluminum and / or trimethylaluminum.
Trimethylaluminum ( TMA ) cocatalyst is added to each reactor during polymerization.
An equivalent of a 2M solution of trimethylaluminum in toluene is added dropwise to the solution.
A process according to Claim 13 wherein the hydrocarbylation agent is trimethylaluminum.
Mixing of a titanocene dihalide and trimethylaluminum alone does not result in formation of component ( A ).
Trimethylaluminum was added in the polymerization and the activity was superior to that of Example 4.
Component ( A ) is typically prepared by reacting a dihalide compound of a corresponding titanocene and trimethylaluminum.
Heretofore trimethylaluminum has been the trialkylaluminum of preference since it yields methylalumoxane ( MAO ).
A process according to Claim 1 wherein the hydrocarbylaluminum is trimethylaluminum and the aluminoxane is methylaluminoxane.
Heretofore trimethylaluminum has been the trialkyl aluminum of preference since it yields methylalumoxane ( MAO ).
When used singularly the trialkylaluminum preferred for use in forming the alumoxane is trimethylaluminum ( TMA ).
MMAO can be produced by the hydrolysis of trimethylaluminum and a higher trialkylaluminum, such as triisobutylaluminum.
The process of claim 2, wherein the trialkylaluminum is trimethylaluminum.
Especially suitable alkylaluminums are trimethylaluminum and triethylaluminum ( TEAL ), the latter being the most preferred.
The mixed catalyst of claim 2, wherein the cocatalyst is trimethylaluminum.
Methylaluminoxane, tetraethylaluminum and trimethylaluminum were encapsulated within a silica-based material using a non-hydrolytic sol-gel process.
The ratio by mol of water taking part in the reaction to trimethylaluminum was 0.8.
Preferably, trimethylaluminum ( TMA ) is the cocatalyst or activator.
Among these, n-butyllithium or trimethylaluminum is preferable.
Examples include, but are not limited to, triethylaluminum, tripropylaluminum and trimethylaluminum.
More preferred are trimethylaluminum and tri ( isobutyl ) aluminum ; most preferred is trimethylaluminum . Polyfunctional compound.
Exemplary of the latter of such co-catalysts are triethylaluminum, trimethylaluminum and tri-isobutylaluminum.
The aluminum alkyl is preferably trimethylaluminum ( TMA ) or triethylaluminum ( TEA1 ) and is most preferably triethylaluminum.
Examples of the organometallic compound include n-butyllithium, sec-butyllithium, trimethylaluminum and the like.
Preferably, trimethylaluminum ( TMA ) is the cocatalyst.
Example 4 Example 2 is repeated except that 4 millimoles of trimethylaluminum are used in example 1.
Trimethylaluminum ( TMA, electronic grade purity, SAFC Hitech ) and H2O were used as precursors.
The polymerisation catalyst according to Claim 2 or 3, wherein the alkylaluminum compound is trimethylaluminum.
Most highly preferred aluminum hydrocarbyl compounds are trimethylaluminum ( TMA ), triethylaluminum ( TEA ), and tri-isobutylaluminum ( TIBA ).
