Christine M Rademacher

US Patent:

6596798, Jul 22, 2003

Filed:

Nov 5, 2001

Appl. No.:

10/012842

Inventors:

Christine M. Rademacher - Akron OH
William L. Hergenrother - Akron OH
Daniel F. Graves - Canal Fulton OH
James D. Ulmer - Akron OH

Assignee:

Bridgestone Corporation - Tokyo

International Classification:

C08K 506

US Classification:

524372, 524373, 524374, 524375, 5253328, 5253329, 5253331, 5253332, 526 83, 526337, 526339, 526340

Abstract:

The present invention provides a method of forming a functionalized polymer. The method includes the steps of providing a living lithium polymer and terminating the polymer with an oxazoline compound selected from an organic halide oxazoline and a branched or unbranched vinyl oxazoline compound. The present invention also provides a compounded rubber article wherein carbon black is compounded with a terminated rubber that is the reaction product of a living lithium polymer and such oxazoline compounds.

US Patent:

7091282, Aug 15, 2006

Filed:

May 15, 2003

Appl. No.:

10/438532

Inventors:

Zhong-Ren Chen - Stow OH, US
Christine M. Rademacher - Akron OH, US

Assignee:

Bridgestone Corporation - Tokyo

International Classification:

C08L 9/00
C08L 23/16
C08L 31/00
C08F 279/02
C08K 3/26

US Classification:

525191, 525232, 525240, 524 69, 524425, 524451, 524525

Abstract:

A composition suitable for forming a sidewall for a tire includes a rubber composition which includes at least one rubber, an ethylene/propylene/diene terpolymer, and a polyalkylene copolymer. The rubber may include one or more natural or synthetic rubbers, such as butadiene rubbers and isoprene rubbers. The ethylene/propylene/diene terpolymer preferably has an ethylene content of at least 60%. The polyalkylene copolymer may be a copolymer of a polyalkylene and an α-olefin, which is formed in a polymerization reaction involving a single site catalyst. The polyalkylene copolymer preferably has a high degree of crystallinity, being preferably at least about 90% by weight ethylene, with a melting point in the range of 80 C. –120 C. The presence of such a copolymer in the rubber composition markedly increases the resistance to crack growth and formation of cracks in the tire sidewall.

US Patent:

7250476, Jul 31, 2007

Filed:

Aug 1, 2003

Appl. No.:

10/632344

Inventors:

Georg G. A. Böhm - Akron OH, US
William L. Hergenrother - Akron OH, US
Christine M. Rademacher - Akron OH, US

Assignee:

Bridgestone Corporation - Chou-ku, Tokyo

International Classification:

C08F 136/04
C08F 236/04

US Classification:

5253319, 5253329, 5253332, 5253333, 525361, 525366, 525375, 525379, 526335, 526340

Abstract:

A multi-functional polymer defined by the formula(Q—RZ—P—Ywhere (Q—R)is a functionality cluster, Q is a functional group, R is a multi-valent organic group, Pis a long-chain polymer, n is an integer from about 2 to about 10, Y is a proton, a weak functional group, or a selective functional group, and Z is a branch point where the functionality clusters join the long-chain polymer.

US Patent:

7335712, Feb 26, 2008

Filed:

Apr 21, 2005

Appl. No.:

11/111615

Inventors:

David F. Lawson - Uniontown OH, US
Christine M. Rademacher - Akron OH, US

Assignee:

Bridgestone Corporation - Chuo-ku, Tokyo

International Classification:

C08F 4/44

US Classification:

526178, 526335, 526346, 526347, 5263471

Abstract:

This invention relates to siloxy-functionalized polymers having the silicon of the siloxy group directly bonded to the end of a polymer chain through one or more carbon atoms, processes of producing the polymers, and initiators used to prepare the polymers. The polymers may be rubbery polymers, such as butadiene-styrene polymers, which are commonly used in tires.

US Patent:

7405262, Jul 29, 2008

Filed:

Jul 11, 2003

Appl. No.:

10/520989

Inventors:

Thomas Antkowiak - Rittman OH, US
Christine Rademacher - Akron OH, US
Anthony Ramic - Parma OH, US
David F. Lawson - Uniontown OH, US

Assignee:

Bridgestone Corporation - Chuo-ku, Tokyo

International Classification:

C08F 4/46
C07F 1/02
C08F 236/10

US Classification:

526173, 526176, 526178, 526179, 526180, 526181, 502155, 502157, 260665 R, 544106, 544358, 546152, 548578, 556 87, 556465, 564336, 568 17, 568 38, 568 77, 562899

Abstract:

A process for preparing a functionalized polymerization initiator, the process comprising combining a functionalized styryl compound and an organolithium compound.

US Patent:

7504457, Mar 17, 2009

Filed:

Jan 13, 2006

Appl. No.:

11/331635

Inventors:

Terrence E. Hogan - Akron OH, US
Christine Rademacher - Akron OH, US
David F. Lawson - Uniontown OH, US
H. James Harwood - Stow OH, US

Assignee:

Bridgestone Corporation - Chuo-ku, Tokyo

International Classification:

C08G 61/02

US Classification:

525 55, 526335, 526346

Abstract:

A method of forming a functionalized polymer, the method comprising reacting a living polymer with a compound defined by the formula.

US Patent:

7534839, May 19, 2009

Filed:

Jun 9, 2004

Appl. No.:

10/560151

Inventors:

David F. Lawson - Uniontown OH, US
Christine Rademacher - Akron OH, US
Christopher Robertson - Akron OH, US

Assignee:

Bridgestone Corporation - Chuo-ku, Tokyo

International Classification:

C08C 19/12
C08C 19/20
C08C 19/22
C08C 19/25
C08C 19/30
C08F 8/30

US Classification:

5253319, 5253323, 5253329, 525342, 525351, 5253592, 5253593, 525375, 525376, 525377, 525383, 525385, 524572, 524575, 524576

Abstract:

Anionically-polymerized living polymers are sequentially functionalized with certain agents X′ and Y′. A method of preparing a functionalized polymer comprising the steps of reacting the polymer with a functionalizing agent X′, and then further reacting the polymer with a functionalizing agent Y′.

US Patent:

7597959, Oct 6, 2009

Filed:

Dec 19, 2006

Appl. No.:

11/612554

Inventors:

Xiaorong Wang - Hudson OH, US
Christine Rademacher - Akron OH, US

Assignee:

Bridgestone Corporation

International Classification:

B32B 5/16

US Classification:

428403, 428407, 570127, 977773

Abstract:

A fluorescent nanoparticle includes a core comprising an alkenylbenzene; an intermediate layer, an outer shell layer, and a fluorescent portion. The fluorescent portion includes a structure represented by the following formula:.