Sung J Yoon

US Patent:

6544922, Apr 8, 2003

Filed:

Jul 18, 2002

Appl. No.:

10/198241

Inventors:

Tobin J. Marks - Evanston IL
Lubin Luo - Baton Rouge LA
Sung Cheol Yoon - Evanston IL

Assignee:

Northwestern University - Evanston IL

International Classification:

C08F 464

US Classification:

502152, 502104, 526134, 526160, 526165, 526943

Abstract:

A catalyst system useful to polymerize and co-polymerize polar and non-polar olefin monomers is formed by in situ reduction with a reducing agent of a catalyst precursor comprising wherein Cp* is a cyclopentadienyl or substituted cyclopentadienyl moiety; M is an early transition metal; R is a C -C hydrocarbyl; Râ are independently selected from hydride, C -C hydrocarbyl, SiRâ , NRâ , ORâ, SRâ, GeRâ , and SnRâ containing groups (Râ=C -C hydrocarbyl); n is an integer selected to balance the oxidation state of M; and A is a suitable non-coordinating anionic cocatalyst or precursor. This catalyst system may form stereoregular olefin polymers including syndiotactic polymers of styrene and methylmethacrylate and isotactic copolymers of polar and nonpolar olefin monomers such as methylmethacrylate and styrene.

US Patent:

6670299, Dec 30, 2003

Filed:

Jun 30, 2000

Appl. No.:

09/608855

Inventors:

Tobin J. Marks - Evanston IL
Lubin Luo - Baton Rouge LA
Sung Cheol Yoon - Evanston IL

Assignee:

Northwestern University - Evanston IL

International Classification:

C08F 464

US Classification:

502152, 502102, 526131, 526134, 526165, 526943

Abstract:

A catalyst system useful to polymerize and co-polymerize polar and non-polar olefin monomers is formed by in situ reduction with a reducing agent of a catalyst precursor comprising wherein Cp* is a cyclopentadienyl or substituted cyclopentadienyl moiety; M is an early transition metal; R is a C -C hydrocarbyl; Râ are independently selected from hydride, C -C hydrocarbyl, SiRâ , NRâ , ORâ, SRâ, GeRâ , SnRâ , and C C containing groups (Râ C -C hydrocarbyl); n is an integer selected to balance the oxidation state of M; and A is a suitable non-coordinating anionic cocatalyst or precursor. This catalyst system may form stereoregular olefin polymers including syndiotactic polymers of styrene and methylmethacrylate and isotactic copolymers of polar and nonpolar olefin monomers such as methylmethacrylate and styrene.

US Patent:

6747112, Jun 8, 2004

Filed:

Dec 19, 2002

Appl. No.:

10/324734

Inventors:

Tobin J. Marks - Evanston IL
Lubin Luo - Baton Rouge LA
Sung Cheol Yoon - Evanston IL

Assignee:

Northwestern University - Evanston IL

International Classification:

C08F 2014

US Classification:

5263297, 5263292, 526347

Abstract:

A catalyst system useful to polymerize and co-polymerize polar and non-polar olefin monomers is formed by in situ reduction with a reducing agent of a catalyst precursor comprising wherein Cp* is a cyclopentadienyl or substituted cyclopentadienyl moiety; M is an early transition metal; R is a C -C hydrocarbyl; Râ are independently selected from hydride, C -C hydrocarbyl, SiRâ , NRâ , ORâ, SRâ, GeRâ , SnRâ , and C C-containing groups (Râ=C -C hydrocarbyl); n is an integer selected to balance the oxidation state of M; and A is a suitable non-coordinating anionic cocatalyst or precursor. This catalyst system may form stereoregular olefin polymers including syndiotactic polymers of styrene and methylmethacrylate and isotactic copolymers of polar and nonpolar olefin monomers such as methylmethacrylate and styrene.

US Patent:

7119158, Oct 10, 2006

Filed:

May 10, 2004

Appl. No.:

10/842725

Inventors:

Tobin J. Marks - Evanston IL, US
Lubin Luo - Baton Rouge LA, US
Sung Cheol Yoon - Evanston IL, US

Assignee:

Northwestern University - Evanston IL

International Classification:

C08F 6/6292
C08F 20/02

US Classification:

526341, 526134, 526160, 526165, 5263031, 526316, 5263171, 526319, 5263182

Abstract:

A catalyst system useful to polymerize and co-polymerize polar and non-polar olefin monomers is formed by in situ reduction with a reducing agent of a catalyst precursor comprising{Cp*MRR′}{A}wherein Cp* is a cyclopentadienyl or substituted cyclopentadienyl moiety; M is an early transition metal; R is a C–Chydrocarbyl; R′ are independently selected from hydride, C–Chydrocarbyl, SiR″, NR″, OR″, SR″, GeR″, SnR″, and C═C-containing groups (R″=C–Chydrocarbyl); n is an integer selected to balance the oxidation state of M; and A is a suitable non-coordinating anionic cocatalyst or precursor. This catalyst system may form stereoregular olefin polymers including syndiotactic polymers of styrene and methylmethacrylate and isotactic copolymers of polar and nonpolar olefin monomers such as methylmethacrylate and styrene.

US Patent:

7160965, Jan 9, 2007

Filed:

May 4, 2005

Appl. No.:

11/121775

Inventors:

Tobin J. Marks - Evanston IL, US
Lubin Luo - Baton Rouge LA, US
Sung Cheol Yoon - Evanston IL, US

Assignee:

Northwestern University - Evanston IL

International Classification:

C08F 4/6392
C08F 4/64

US Classification:

526160, 526134, 5263292, 5263297, 526943

Abstract:

A catalyst system useful to polymerize and co-polymerize polar and non-polar olefin monomers is formed by in situ reduction with a reducing agent of a catalyst precursor comprising{Cp*MRR′}{A}wherein Cp* is a cyclopentadienyl or substituted cyclopentadienyl moiety; M is an early transition metal; R is a C–Chydrocarbyl; R′ are independently selected from hydride, C–Chydrocarbyl, SiR″, NR″, OR″, SR″, GeR″, SnR″, and C═C-containing groups (R″=C–Chydrocarbyl); n is an integer selected to balance the oxidation state of M; and A is a suitable non-coordinating anionic cocatalyst or precursor. This catalyst system may form stereoregular olefin polymers including syndiotactic polymers of styrene and methylmethacrylate and isotactic copolymers of polar and nonpolar olefin monomers such as methylmethacrylate and styrene.

US Patent:

20030134995, Jul 17, 2003

Filed:

Dec 19, 2002

Appl. No.:

10/325330

Inventors:

Tobin Marks - Evanston IL, US
Lubin Luo - Baton Rouge LA, US
Sung Yoon - Evanston IL, US

International Classification:

C08F004/44

US Classification:

526/134000, 526/170000, 526/346000, 526/319000, 526/943000

Abstract:

A catalyst system useful to polymerize and co-polymerize polar and non-polar olefin monomers is formed by in situ reduction with a reducing agent of a catalyst precursor comprising wherein Cp* is a cyclopentadienyl or substituted cyclopentadienyl moiety; M is an early transition metal; R is a C-Chydrocarbyl; R′ are independently selected from hydride, C-Chydrocarbyl, SiR″, NR″, OR″, SR″, GeR″, SnR″, and C C groups (R″ C-Chydrocarbyl); n is an integer selected to balance the oxidation state of M; and A is a suitable non-coordinating anionic cocatalyst or precursor. This catalyst system may form stereoregular olefin polymers including syndiotactic polymers of styrene and methylmethacrylate and isotactic copolymers of polar and nonpolar olefin monomers such as methylmethacrylate and styrene.

Address:

1193 Russellwood Ct, Buffalo Grove, IL 60089

VIN:

KMHDU46D99U622895

Make:

HYUNDAI

Model:

ELANTRA

Year:

2009