IP Library › Granted Patent US 12,351,670
Granted Patent B2
US 12,351,670 · App. 18/648,551 · Granted Jul 8, 2025

Modifications of sulfated bentonites and uses thereof in metallocene catalyst systems for olefin polymerization

Inventors: Max P. McDaniel (Bartlesville, OK); Qing Yang (Bartlesville, OK); Ryan N. Rose (Caney, KS); Kathy S. Clear (Bartlesville, OK); Graham R. Lief (Bartlesville, OK); Eric D. Schwerdtfeger (Bartlesville, OK); Anand Ramanathan (Bartlesville, OK); Jeremy M. Praetorius (Bartlesville, OK); Connor D. Boxell (Bartlesville, OK)
Assignee: Chevron Phillips Chemical Company LP
C08F4/025C08F4/02C08F4/65916C08F4/65925C08F4/65927C08F210/02C08F2420/01C08F2420/03
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Quick Facts
Patent No.
US 12,351,670
App. No.
18/648,551
Granted
Jul 8, 2025
Kind
B2
Abstract

Sulfated bentonite compositions are characterized by a total pore volume from 0.4 to 1 mL/g, a total BET surface area from 200 to 400 m 2 /g, and an average pore diameter from 55 to 100 Angstroms. The sulfated bentonite compositions also can be characterized by a d50 average particle size in a range from 15 to 50 μm and a ratio of d90/d10 from 3 to 15. The sulfated bentonite compositions can contain a sulfated bentonite and from 10 to 90 wt. % of colloidal particles, or the sulfated bentonite compositions can contain a sulfated bentonite and from 0.2 to 10 mmol/g of zinc and/or phosphorus. These compositions can be utilized in metallocene catalyst systems to produce ethylene based polymers.

Claims (25)

1. A sulfated bentonite composition characterized by:

a d50 average particle size from 15 to 50 μm;

a ratio of d90/d10 from 3 to 15; and

wherein the composition contains from 25 to 35 wt. % silicon.

2. The composition of claim 1 , wherein the composition has a particle size span from 1 to 3.2.

3. The composition of claim 1 , wherein the composition has a d10 particle size from 4 to 25 μm.

4. The composition of claim 1 , wherein the composition has a ratio of d90/d50 from 1.5 to 3.5.

5. The composition of claim 1 , wherein:

the d50 average particle size is from 20 to 40 μm; and

the ratio of d90/d10 is from 4 to 12.

6. The composition of claim 5 , wherein the composition is further characterized by:

a particle size span from 1.2 to 2.7;

a d10 particle size from 4.5 to 22 μm; and

a ratio of d90/d50 from 1.7 to 3.

7. The composition of claim 1 , wherein:

the d50 average particle size is from 17 to 45 μm; and

the ratio of d90/d10 is from 3 to 12.

8. The composition of claim 1 , wherein the composition has a particle size span from 1.3 to 2.6.

9. The composition of claim 1 , wherein the composition has a d10 particle size from 5 to 20 μm.

10. The composition of claim 1 , wherein the composition has a ratio of d90/d50 from 1.8 to 2.7.

11. A catalyst composition comprising:

a metallocene compound;

a co-catalyst; and

the sulfated bentonite composition of claim 1 .

12. The catalyst composition of claim 11 , wherein the co-catalyst comprises an organoaluminum compound, an organozinc compound, an aluminoxane compound, an organoboron or organoborate compound, an ionizing ionic compound, or any combination thereof.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 6, 2024
From: MCDANIEL, MAX P.; YANG, QING; ROSE, RYAN N.; CLEAR, KATHY S.; LIEF, GRAHAM R.; SCHWERDTFEGER, ERIC D.; RAMANATHAN, ANAND; PRAETORIUS, JEREMY M.; BOXELL, CONNOR D.
To: CHEVRON PHILLIPS CHEMICAL COMPANY LP
Reel/Frame 067638/0001 →
Continuity (3)
Division 18065003 · Dec 13, 2022
Provisional Application 63290088 · Dec 16, 2021
Related Publication 20240279366A1 · Aug 22, 2024
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US 12,565,543