Qing Guo Yang

US Patent:

8318873, Nov 27, 2012

Filed:

Feb 3, 2011

Appl. No.:

13/020334

Inventors:

Kumudini C. Jayaratne - Helsinki, FI
Michael D. Jensen - Laurel MD, US
Qing Yang - Bartlesville OK, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 4/52
C08F 4/64
C08F 4/76

US Classification:

526114, 526113, 526119, 526118, 526130, 526129, 526127, 526126, 526135, 526137, 526144, 526941, 526943, 526348, 5263482, 5263483, 5263484, 5263485, 5263486, 526351, 526352, 526346

Abstract:

Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.

US Patent:

8426538, Apr 23, 2013

Filed:

Sep 8, 2011

Appl. No.:

13/227785

Inventors:

Michael D. Jensen - Laurel MD, US
Max P. McDaniel - Bartlesville OK, US
Joel L. Martin - Bartlesville OK, US
Elizabeth A. Benham - Spring TX, US
Randy L. Muninger - Dewey OK, US
Gary G. Jerdee - Orange TX, US
Ashish M. Sukhadia - Bartlesville OK, US
Qing R. Yang - Bartlesville OK, US
Matthew G. Thorn - Lebanon OH, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 4/52
C08F 4/64
C08F 4/76

US Classification:

526160, 526161, 526170, 526172, 526943, 526941, 526904, 526126, 526127, 526129, 526130, 526135, 526137, 526348, 5263485, 5263486, 526351, 526352, 502103, 502104, 502118, 502119

Abstract:

This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.

US Patent:

8507621, Aug 13, 2013

Filed:

Oct 30, 2012

Appl. No.:

13/663528

Inventors:

Michael D. Jensen - Laurel MD, US
Qing Yang - Bartlesville OK, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 4/64
C08F 4/76
C08F 4/52

US Classification:

526113, 526160, 526170, 526129, 526134, 526114, 526116, 526943, 526941, 526348

Abstract:

Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.