Back to results
US 2016/0355618 A1Published application
Silica Supports With High Aluminoxane Loading Capability
AssigneeExxonMobil Chemical Patents Inc.
InventorsLubin Luo, Anupriya Jain, Xuan Ye
Life of this patent
Estimating the term…
Abstract
Olefin polymerization catalyst systems having high aluminoxane loading and methods for making and using them are disclosed herein.
Claims25
An olefin polymerization catalyst system comprising a silica support, wherein the silica support comprises silica gel particles having:
- a. an average surface area of from about 400 to 800 m2/g;
- b. an average pore diameter of from about 60 to 200 Angstrom;
- and
- c. at least 20% of the incremental pore volume comprised of pores having a pore diameter larger than about 100 Angstrom;
- wherein the catalyst system further comprises an aluminoxane, and the aluminoxane loading on the support is greater than about 9.5 mmol Al/g silica.
2 more elements
A method for making an olefin polymerization catalyst system comprising contacting:
- d. a silica support, wherein the silica support comprises silica gel particles having:
- i. an average surface area of from about 400 to 800 m2/g;
- ii. an average pore diameter of from about 60 to 200 Angstrom;
- and
- iii. at least 20% of the incremental pore volume is comprised of pores having a pore diameter larger than about 100 Angstrom;
- e. an aluminoxane;
- and
- f. an olefin catalyst component,
- wherein the catalyst system has an aluminoxane loading on the support of greater than about 9.5 mmol Al/g silica.
6 more elements
Dependencies are inferred from the claim text.