Modified phosphinimine catalysts for olefin polymerization
First Claim
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1. A polymerization process comprising contacting ethylene and at least one alpha olefin with a polymerization catalyst in a gas phase reactor, the polymerization catalyst comprising:
- i) a phosphinimine catalyst, ii) an inert support, iii) a cocatalyst, and iv) a catalyst modifier;
wherein the catalyst modifier is present in from 0.5 to 4.5 weight percent based on the weight of i), ii) and iii) of the polymerization catalyst and comprises a compound having the formula;
R1R2xN((CH2)nOH)y where R1 is a hydrocarbyl group having from 5 to 30 carbon atoms, R2 is hydrogen or a hydrocarbyl group having from 1 to 30 carbon atoms, x is 1 or 0, y is 1 when x is 1, y is 2 when x is 0, each n is independently an integer from 1 to 30 when y is 2, and n is an integer from 1 to 30 when y is 1; and
wherein the phosphinimine catalyst has the formula;
(1-C6F5CH2-Indenyl)((t-Bu)3P═
N)TiX2, where X is an activatable ligand.
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Abstract
Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
49 Citations
25 Claims
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1. A polymerization process comprising contacting ethylene and at least one alpha olefin with a polymerization catalyst in a gas phase reactor, the polymerization catalyst comprising:
- i) a phosphinimine catalyst, ii) an inert support, iii) a cocatalyst, and iv) a catalyst modifier;
wherein the catalyst modifier is present in from 0.5 to 4.5 weight percent based on the weight of i), ii) and iii) of the polymerization catalyst and comprises a compound having the formula;
R1R2xN((CH2)nOH)y where R1 is a hydrocarbyl group having from 5 to 30 carbon atoms, R2 is hydrogen or a hydrocarbyl group having from 1 to 30 carbon atoms, x is 1 or 0, y is 1 when x is 1, y is 2 when x is 0, each n is independently an integer from 1 to 30 when y is 2, and n is an integer from 1 to 30 when y is 1; and
wherein the phosphinimine catalyst has the formula;
(1-C6F5CH2-Indenyl)((t-Bu)3P═
N)TiX2, where X is an activatable ligand. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- i) a phosphinimine catalyst, ii) an inert support, iii) a cocatalyst, and iv) a catalyst modifier;
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11. A polymerization catalyst comprising:
- i) a phosphinimine catalyst;
ii) an inert support;
iii) a cocatalyst; and
iv) a catalyst modifier;
wherein the catalyst modifier is present from 0.25 to 6.0 weight percent based on the weight of i), ii) and iii) of the polymerization catalyst and comprises a compound having the formula;
R1R2xN((CH2)nOH)y where R1 is a hydrocarbyl group having from 5 to 30 carbon atoms, R2 is hydrogen or a hydrocarbyl group having from 1 to 30 carbon atoms, x is 1 or 0, y is 1 when x is 1, y is 2 when x is 0, each n is independently an integer from 1 to 30 when y is 2, and n is an integer from 1 to 30 when y is 1;
wherein the phosphinimine catalyst has the formula;
(1-C6F5CH2-Indenyl)((t-Bu)3P═
N)TiX2, where X is an activatable ligand. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
- i) a phosphinimine catalyst;
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22. A polymerization process comprising contacting ethylene and at least one alpha olefin with a polymerization catalyst in a gas phase reactor, the polymerization catalyst comprising:
- i) a phosphinimine catalyst, ii) an inert support, iii) a cocatalyst, and iv) a catalyst modifier;
wherein the catalyst modifier is present in from 0.5 to 4.5 weight percent based on the weight of i), ii) and iii) of the polymerization catalyst and comprises a compound having the formula;
R1R2xN((CH2)nOH)y where R1 is a hydrocarbyl group having from 5 to 30 carbon atoms, R2 is hydrogen or a hydrocarbyl group having from 1 to 30 carbon atoms, x is 1 or 0, y is 1 when x is 1, y is 2 when x is 0, each n is independently an integer from 1 to 30 when y is 2, and n is an integer from 1 to 30 when y is 1; and
wherein the phosphinimine catalyst has the formula;
(1-R¥
-Indenyl)((t-Bu)3P═
N)TiX2, where R¥
is a benzyl group which is unsubstituted or is substituted by at least one fluoride atom; and
X is an activatable ligand. - View Dependent Claims (23)
- i) a phosphinimine catalyst, ii) an inert support, iii) a cocatalyst, and iv) a catalyst modifier;
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24. A polymerization catalyst comprising:
- i) a phosphinimine catalyst;
ii) an inert support;
iii) a cocatalyst; and
iv) a catalyst modifier;
wherein the catalyst modifier is present from 0.25 to 6.0 weight percent based on the weight of i), ii) and iii) of the polymerization catalyst and comprises a compound having the formula;
where R1R2xN((CH2)nOH)y where R1 is a hydrocarbyl group having from 5 to 30 carbon atoms, R2 is hydrogen or a hydrocarbyl group having from 1 to 30 carbon atoms, x is 1 or 0, y is 1 when x is 1, y is 2 when x is 0, each n is independently an integer from 1 to 30 when y is 2, and n is an integer from 1 to 30 when y is 1;
wherein the phosphinimine catalyst has the formula;
(1-R¥
-Indenyl)((t-Bu)3P═
N)TiX2, where R¥
is a benzyl group which is unsubstituted or is substituted by at least one fluoride atom; and
X is an activatable ligand. - View Dependent Claims (25)
- i) a phosphinimine catalyst;
Specification