1
Brooke L Small, Kenneth D Hope, Qing Yang, Albert P Masino, Max P McDaniel, Richard M Buck, William B Beaulieu, Eduardo J Baralt, Eric J Netemeyer, Bruce Kreischer: Oligomerization of alpha olefins using metallocene-SSA catalyst systems and use of the resultant polyalphaolefins to prepare lubricant blends. Chevron Phillips Chemical Company, Merchant & Gould P C, September 17, 2013: US08536391 (13 worldwide citation)

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 acti ...


2
Mark L Hlavinka, Errun Ding, Paul DesLauriers, Yongwoo Inn, Lili Cui, Qing Yang, Ashish Sukhadia, Guylaine St Jean, Richard M Buck: Higher density polyolefins with improved stress crack resistance. Chevron Phillips Chemical Company, Merchant & Gould P C, October 13, 2015: US09156970 (10 worldwide citation)

Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes can employ a catalyst system containing two or three metallocene components, resulting in ethylene-based copolymers that can have a medium density and improved stress crack resistance.


3
Richard M Buck, Qing Yang, Albert P Masino, Christopher E Wittner: Bridged metallocene catalyst systems with switchable hydrogen and comonomer effects. Chevron Philips Chemical Company, Merchant & Gould P C, January 28, 2014: US08637616 (4 worldwide citation)

The present invention provides polymerization processes utilizing an ansa-metallocene catalyst system for the production of olefin polymers. Polymers produced from the polymerization processes have properties that vary based upon the presence or the absence of hydrogen and/or comonomer in the polyme ...


4
Richard M Buck, Qing Yang, Albert P Masino, Christopher E Wittner: Catalyst systems containing a bridged metallocene. Chevron Phillips Chemical Company, Merchant & Gould P C, December 17, 2013: US08609793 (4 worldwide citation)

The present invention provides polymerization processes utilizing a catalyst system containing an ansa-metallocene and a second metallocene compound for the production of olefin polymers.


5
Richard M Buck, Qing Yang: Stereoselective synthesis of bridged metallocene complexes. Chevron Phillips Chemical Company, Merchant & Gould P C, January 14, 2014: US08629292 (3 worldwide citation)

The present invention provides methods of making stereo-enriched ansa-metallocene compounds using an unchelated amine compound. Generally, these methods result in a rac:meso isomer selectivity of the stereo-enriched ansa-metallocene compound of greater than 4:1.


6
Mark L Hlavinka, Errun Ding, Paul DesLauriers, Yongwoo Inn, Lili Cui, Qing Yang, Ashish Sukhadia, Guylaine St Jean, Richard M Buck: Higher density polyolefins with improved stress crack resistance. Chevron Phillips Chemical Company, Merchant & Gould P C, July 19, 2016: US09394393 (3 worldwide citation)

Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes can employ a catalyst system containing two or three metallocene components, resulting in ethylene-based copolymers that can have a medium density and improved stress crack resistance.


7
David R Dayton, Lloyd K Bucher, Richard M Buck: Automotive lamp having an insulating base. North American Philips Corporation, Brian J Wieghaus, September 5, 1989: US04864185 (3 worldwide citation)

An incandescent automotive lamp for mounting in a lamp socket comprising a light-transmitting envelope, an insulating base, and a plurality of conductive wires. The light-transmitting envelope contains an energizable light source and has a sealed-end portion. The insulating base includes a housing, ...


8
Brooke L Small, Kenneth D Hope, Qing Yang, Albert P Masino, Max P McDaniel, Richard M Buck, William B Beaulieu, Eduardo J Baralt, Eric J Netemeyer, Bruce Kreischer: Oligomerization of alpha olefins using metallocene-SSA catalyst systems and use of the resultant polyalphaolefins to prepare lubricant blends. Chevron Phillips Chemical Company, Merchant & Gould P C, May 10, 2016: US09334203 (2 worldwide citation)

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 acti ...


9
Richard M Buck, Albert P Masino, Qing Yang, Paul J DesLauriers, Steven J Secora, Elizabeth M Lanier, Guylaine St Jean, Jon D Ratzlaff, Christopher E Wittner: Polymer compositions for rotational molding applications. Chevron Phillips Chemical Company, Conley Rose P C, Rodney B Carroll, Cheryl L Huseman, July 23, 2013: US08492498 (2 worldwide citation)

A polymer having a density of from about 0.94 g/cm3 to about 0.96 g/cm3 and a primary structure parameter 2 (PSP2 value) of greater than about 8.5, wherein an article formed from the polymer has an environmental stress crack resistance of equal to or greater than about 1000 hours when measured in ac ...


10
Richard M Buck, Qing Yang, Albert P Masino, Christopher E Wittner: Catalyst systems containing a bridged metallocene. Chevron Phillips Chemical Company, Merchant & Gould, May 26, 2015: US09040642

The present invention provides polymerization processes utilizing a catalyst system containing an ansa-metallocene and a second metallocene compound for the production of olefin polymers.