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US 11,492,450 B2Granted
Dual-headed organoaluminum compositions
AssigneeDow Global Technologies LLC
InventorsLixin Sun, Endre Szuromi, Jerzy Klosin, Edmund M. Carnahan, Jasson T. Patton, Longyan Liao
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Abstract
The present disclosure relates to dual-headed organoaluminum compositions having the formula (I) and processes to prepare the same. In at least one aspect, the compositions having the formula (I) may be used during olefin polymerization.
Claims9
A composition of formula (I):
- wherein:
- n is a number from 1 to 100;
- each J group is independently hydrogen or a substituted or unsubstituted acyclic alkyl group;
- two J groups attached to the same Al atom can be optionally covalently linked together;
- and Y is a linking group comprising two points of attachment to Al atoms and is selected from the group consisting of the following formulas (II) to (V):
- —CH2CH2(CHR1)mCH2CH2— (II),
- wherein:
- R1 is hydrogen or a C1 to C20 alkyl or aryl group;
- and
- m is a number from 0 to 20.
7 more elements
A process for preparing an organoaluminum composition, the process comprising:
- (a) combining an aluminum compound, a linking agent, and an optional solvent at a temperature of from 25° C. to 200° C., and
- (b) obtaining the organoaluminum composition, wherein:
- the aluminum compound has the formula Al(J)3, wherein each J group is independently hydrogen or a substituted or unsubstituted acyclic alkyl group, and, optionally, two J groups can be covalently linked together;
- and the linking agent is 1,2,4-trivinylcyclohexane or 1,3-divinylcyclopentane.
1 more element
An organoaluminum composition comprising the reaction product of:
- an aluminum compound, a linking agent, and an optional solvent, wherein:
- the aluminum compound has the formula Al(J)3, wherein each J group is independently hydrogen or a substituted or unsubstituted acyclic alkyl group, and, optionally, two J groups attached to the same Al atom can be covalently linked together;
- and
- the linking agent is 1,2,4-trivinylcyclohexane or 1,3-divinylcyclopentane.
1 more element
Dependencies are inferred from the claim text.