Qing Yang

US Patent:

8487053, Jul 16, 2013

Filed:

Nov 30, 2011

Appl. No.:

13/307053

Inventors:

George R. Rajaendran - Porter TX, US
Max P. McDaniel - Bartlesville OK, US
Gregory G. Hendrickson - Kingwood TX, US
John D. Stewart - Friendswood TX, US
John D. Hottovy - Kingwood TX, US
Ted H. Cymbaluk - Seabrook TX, US
Susannah Lane - Houston TX, US
Richard A. Hernandez - Houston TX, US
Elliott W. Johnson - Friendswood TX, US
Qing Yang - Bartlesville OK, US
William L. Valerioti - Houston TX, US
Eric Schwerdtfeger - Bartlesville OK, US
Albert P. Masino - Tulsa OK, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 2/00
C08F 4/00
C08F 4/44
C08F 210/00

US Classification:

526 64, 526118, 526119, 5261242, 526129, 526153, 526348

Abstract:

Methods for removing polymer skins or build-up from reactor walls in polymerization reactor systems containing a loop slurry reactor are disclosed. Such methods can employ removing some or all of the comonomer from the reactor system in combination with increasing the polymerization temperature of the loop slurry reactor.

US Patent:

8536391, Sep 17, 2013

Filed:

Jun 15, 2010

Appl. No.:

12/816077

Inventors:

Brooke L. Small - Kingwood TX, US
Kenneth D. Hope - Kingwood TX, US
Qing Yang - Bartlesville OK, US
Albert P. Masino - Tulsa OK, US
Max P. McDaniel - Bartlesville OK, US
Richard M. Buck - Bartlesville OK, US
William B. Beaulieu - Tulsa OK, US
Eduardo J. Baralt - Kingwood TX, US
Eric J. Netemeyer - Bartlesville OK, US
Bruce Kreischer - Kingwood TX, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C07C 2/74

US Classification:

585255, 585254, 585502, 585510, 585511, 585512, 585520, 585521, 585522, 585523

Abstract:

This disclosure provides for alpha olefin oligomers and polyalphaolefins (or PAOs) and methods of making the alpha olefin oligomers and PAOs. This disclosure encompasses metallocene-based alpha olefin oligomerization catalyst systems, including those that include at least one metallocene and an activator comprising a solid oxide chemically-treated with an electron withdrawing anion. The alpha olefin oligomers and PAOs prepared with these catalyst systems can have a high viscosity index combined with a low pour point, making them particularly useful in lubricant compositions and as viscosity modifiers.

US Patent:

20110082323, Apr 7, 2011

Filed:

Oct 5, 2010

Appl. No.:

12/898465

Inventors:

Brooke L. Small - Kingwood TX, US
Orson L. Sydora - Houston TX, US
Albert P. Masino - Tulsa OK, US
Hu Yang - Manvel TX, US
Qing Yang - Bartlesville OK, US
Max P. McDaniel - Bartlesville OK, US
Eduardo J. Baralt - Kingwood TX, US
William B. Beaulieu - Tulsa OK, US

Assignee:

CHEVRON PHILLIPS CHEMICAL COMPANY LP - The Woodlands TX

International Classification:

C07C 2/08
C07C 2/02
C07C 11/02

US Classification:

585 18, 585520, 585533

Abstract:

This disclosure provides for olefin wax oligomer compositions, methods of producing olefin wax oligomer composition, and methods for oligomerizing olefin waxes. This disclosure encompasses metallocene-based olefin wax oligomerization catalyst systems, including those that include a metallocene and an aluminoxane, a metallocene and a solid oxide chemically-treated with an electron withdrawing anion, and a metallocene, a solid oxide chemically-treated with an electron withdrawing anion, and an organoaluminum compound. The olefin wax oligomers prepared with these catalyst systems can decreased needle penetrations, increased viscosity, and an increased drop melt, making them useful as an additive in candles, stone polishes, liquid polishes, and mold release formulations.

US Patent:

20130085060, Apr 4, 2013

Filed:

Oct 3, 2012

Appl. No.:

13/633919

Inventors:

CHEVRON PHILLIPS CHEMICAL COMPANY LP - The Woodlands TX, US
Joel L. Martin - Bartlesville OK, US
Albert P. Masino - Tulsa OK, US
Qing Yang - Bartlesville OK, US
Youlu Yu - Bartlesville OK, US

Assignee:

CHEVRON PHILLIPS CHEMICAL COMPANY LP - The Woodlands TX

International Classification:

C08F 4/76
C08F 4/6592

US Classification:

502117, 502156, 502154, 502103, 502152, 502155

Abstract:

The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins also are provided.

US Patent:

20130317265, Nov 28, 2013

Filed:

Jul 31, 2013

Appl. No.:

13/955515

Inventors:

Kenneth D. Hope - Kingwood TX, US
Qing Yang - Bartlesville OK, US
Albert P. Masino - Tulsa OK, US
Max P. McDaniel - Bartlesville OK, US
Richard M. Buck - Bartlesville OK, US
William B. Beaulieu - Bartlesville OK, US
Eduardo J. Baralt - Kingwood TX, US
Eric J. Netemeyer - Bartlesville OK, US
Bruce Kreischer - Kingwood TX, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C07C 2/30

US Classification:

585 18, 585521, 585255

Abstract:

This disclosure provides for alpha olefin oligomers and polyalphaolefins (or PAOs) and methods of making the alpha olefin oligomers and PAOs. This disclosure encompasses metallocene-based alpha olefin oligomerization catalyst systems, including those that include at least one metallocene and an activator comprising a solid oxide chemically-treated with an electron withdrawing anion. The alpha olefin oligomers and PAOs prepared with these catalyst systems can have a high viscosity index combined with a low pour point, making them particularly useful in lubricant compositions and as viscosity modifiers.

US Patent:

20160264493, Sep 15, 2016

Filed:

Apr 7, 2016

Appl. No.:

15/092659

Inventors:

- The Woodlands TX, US
Kenneth D. Hope - Kingwood TX, US
Qing Yang - Bartlesville OK, US
Albert P. Masino - Tulsa OK, US
Max P. McDaniel - Bartlesville OK, US
Richard M. Buck - Bartlesville OK, US
William B. Beaulieu - Tulsa OK, US
Eduardo J. Baralt - Kingwood TX, US
Eric J. Netemeyer - Kingwood TX, US
Bruce Kreischer - Kingwood TX, US

International Classification:

C07C 2/32
C10M 105/04
C07C 5/05

Abstract:

This disclosure provides for alpha olefin oligomers and polyalphaolefins (or PAOs) and methods of making the alpha olefin oligomers and PAOs. This disclosure encompasses metallocene-based alpha olefin oligomerization catalyst systems, including those that include at least one metallocene and an activator comprising a solid oxide chemically-treated with an electron withdrawing anion. The alpha olefin oligomers and PAOs prepared with these catalyst systems can have a high viscosity index combined with a low pour point, making them particularly useful in lubricant compositions and as viscosity modifiers.