Catalyst composition and methods for its preparation and use in a polymerization process
AssigneeUnivation Technologies, LLC
InventorsAgapios Kyriacos Agapiou, Chi-I Kuo, David Michael Glowczwski, Steven Kent Ackerman
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Abstract
The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a carboxylate metal salt. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(s). In particular, the polymerization catalyst system is supported on a carrier. More particularly, the polymerization catalyst comprises a bulky ligand metallocene-type catalyst system.
Claims77
A process for polymerizing olefin(s) comprising contacting olefin(s) in a polymerization reactor with a catalyst composition comprising at least one polymerization catalyst and an antifouling additive comprising at least one Group 13 carboxylate metal salt.
A continuous gas phase process for polymerizing monomer(s) in a reactor, said process comprising the steps of:
- (a) introducing a recycle stream into the reactor, the recycle stream comprising one or more monomer(s);
- (b) introducing a polymerization catalyst and Group 13 a carboxylate metal salt into the reactor;
- (c) withdrawing the recycle stream from the reactor;
- (d) cooling the recycle stream;
- (e) introducing into the reactor additional monomer(s) to replace the monomer(s) polymerized;
- (f) reintroducing the recycle stream into the reactor;
- and
- (g) withdrawing a polymer product from the reactor.
A process for polymerizing one or more olefins, at least one of which is ethylene, comprising contacting the one or more olefins with a first catalyst composition to, produce a first polymer product, the first catalyst composition comprising a first polymerization catalyst and a Group 13 carboxylate metal salt.
A polymerization process for producing a first ethylene based polymer product having a density greater than 0.87 g/cc and a melt index greater than 1 dg/min in the presence of a first catalyst composition comprising a first polymerization catalyst, the process comprising the step of:
- transitioning to a second catalyst composition to produce a second ethylene based polymer product having a density greater than 0.920 g/cc and a melt index less than or equal to 1 dg/min, the second catalyst composition comprising a second polymerization catalyst and a Group 13 carboxylate metal salt.
A continuous gas phase polymerization process for polymerizing ethylene and one or more alpha-olefins having 4 or more carbon atoms at a pressure in the range of from about 200 psig (1379 kPa) to about 400 psig (2759 kPa), a polymerization temperature in the range of from about 70° C. to about 110° C., at a production rate of greater than 10,000 pounds (4540 Kg) of a polymer product per hour, and at a polymerization catalyst productivity of greater than 1500 grams of the polymer product per gram of the polymerization catalyst, the process operating in the presence of a Group 13 carboxylate metal salt.
A continuous process for polymerizing monomer(s) in a fluidized bed gas phase reactor operating under a pressure in the range of from about 200 psig (1379 kPa) to about 400 psig (2759 kPa) and a polymerization temperature in the range of from about 70° C. to about 110° C., the process comprising the steps of:
- (a) introducing a recycle stream into the reactor, the recycle stream comprising one or more monomer(s);
- (b) introducing a polymerization catalyst comprising a bulky ligand metallocene catalyst compound, an activator and an inorganic carrier, and a Group 13 carboxylate metal salt into the reactor;
- (c) withdrawing the recycle stream from the reactor;
- (d) cooling the recycle stream;
- (e) introducing into the reactor additional monomer(s) to replace the monomer(s) polymerized;
- and
- (f) reintroducing the recycle stream into the reactor;
- and withdrawing greater than 10,000 pounds (4540 Kg) of a polymer product per hour from the reactor.
Dependencies are inferred from the claim text.