公开(公告)号：BRPI0715207A2

公开(公告)日：2013-06-11

申请号：BRPI0715207

申请日：2007-07-27

Applicant: BRIDGESTONE CORP

Inventor： WANG XIAORONG ,  BOHM GEORG G A ,  WARREN SANDRA ,  PAN XIAO-DONG ,  HALL JAMES E

IPC: C01D7/00

Abstract: A polymeric nanoparticle composition is provided. The nanoparticle may be of a core/shell configuration with an interphase region connecting the core and the shell. The mean average diameter of the polymer nanoparticles may be less than about 250 nm. The size, composition, and/or configuration of the interphase region may be varied to achieve desired physical and/or chemical properties of the resulting polymeric nanoparticles, and of the compositions into which the nanoparticles are compounded.

公开(公告)号：CA2407874C

公开(公告)日：2010-04-06

申请号：CA2407874

申请日：2001-05-10

Applicant: BRIDGESTONE CORP

Inventor： HOGAN TERRENCE E ,  HERGENROTHER WILLIAM L ,  HALL JAMES E

IPC: B60C1/00 ,  C08F8/42 ,  C08C19/44 ,  C08F8/12 ,  C08G65/48 ,  C08G81/02 ,  C08K3/04 ,  C08K3/36 ,  C08L21/00 ,  C08L101/00

Abstract: The invention provides chain-coupled polymeric alkoxide compounds for use as the elastomeric component in vulcanizable elastomeric compositions comprising silica, carbon black or mixtures thereof. In particular, the invention provides anionically polymerized polymers having polymer chain living ends that are functionalized with alkoxide groups and coupled together by a metal or nonmetal atom. The polymeric alkoxide compounds have an initial high viscosity for ease of handling prior to compounding, a stable viscosity during storage, and a decreased compound viscosity for better filler dispersion and improved mixing efficiency. The invention further provides a pneumatic tire having at least one component produced from the vulcanizable elastomeric composition of the invention.

公开(公告)号：DE60229061D1

公开(公告)日：2008-11-06

申请号：DE60229061

申请日：2002-10-04

Applicant: BRIDGESTONE CORP

Inventor： WANG XIAORONG ,  LIN CHENCHY JEFFREY ,  HALL JAMES E ,  WARREN SANDRA ,  KROM JAMES A ,  KONDO HAJIME ,  MORITA KOICHI

IPC: C08F8/00 ,  C08K3/36 ,  B60C1/00 ,  C08F257/00 ,  C08F257/02 ,  C08F279/00 ,  C08F287/00 ,  C08F297/04 ,  C08L9/06 ,  C08L21/00 ,  C08L23/02 ,  C08L23/16 ,  C08L51/00 ,  C08L53/00 ,  C08L53/02

公开(公告)号：CA2219708C

公开(公告)日：2006-12-19

申请号：CA2219708

申请日：1997-10-29

Applicant: BRIDGESTONE CORP

Inventor： HALL JAMES E

IPC: C08F2/00 ,  C08F4/50 ,  C08F2/38 ,  C08F4/44 ,  C08F4/56 ,  C08F36/04 ,  C08F297/04 ,  C08G85/00

Abstract: The invention is a practical process for anionically synthesizing commercially significant quantities of macrocyclic polymers from polar and/or non-polar monomers by using Group IIA and IIB metal cyclic organometallic initiators. Activation of the ring metal atom results in anionic polymerization of the monomers by addition into the initiator ring at the bonds between the atom and its two adjacent carbon atoms, the metal atom acting as a bridge between the two living ends of the propagating chain. Coupling of the cyclic polymer living ends by coupling agents produces macrocyclic polymers that are stable in air and moisture and that exhibit desirable properties, such as low viscosities at high molecular weights. Such macrocyclic polymers provide enhanced polymer processability during molding, extruding and the forming of films. Macrocyclic polymers terminated with coupling agents that also provide functional groups may be compounded to produce vulcanizable elastomeric compounds and articles that exhibit reduced hysteresis properties.

公开(公告)号：CA2219574C

公开(公告)日：2006-12-19

申请号：CA2219574

申请日：1997-10-29

Applicant: BRIDGESTONE CORP

Inventor： HALL JAMES E

IPC: C08F297/02 ,  C08F4/44 ,  C08F4/50 ,  C08F297/04

Abstract: The invention is a practical process for anionically synthesizing multiblock polymers containing a plurality of blocks formed from polar and/or non-polar monomers by using a cyclic organometallic compound initiator that comprises a divalent metal atom and a n organic moiety contained in a ring, preferably a cycloorganomagnesium initiator. Activation of the ring metallic atom results in anionic polymerization of the monomers by addition into the initiator ring at the bonds between the metallic atom and its two adjacent carbon atoms, the metallic atom acting as a bridge between the two living ends of the propagating chain. The active chai n ends can be coupled or terminated.

公开(公告)号：ES2195066T3

公开(公告)日：2003-12-01

申请号：ES97117842

申请日：1997-10-15

Applicant: BRIDGESTONE CORP

Inventor： HALL JAMES E

IPC: B60C1/00 ,  C08F4/44 ,  C08F4/50 ,  C08F8/00 ,  C08F10/00 ,  C08F36/00 ,  C08F36/04 ,  C08K3/04 ,  C08K3/36 ,  C08L9/00 ,  C08L57/00 ,  C08F297/04

Abstract: The present invention provides a method of anionic synthesis of stable macrocyclic polymers that are compounded to form vulcanizable elastomeric compounds exhibiting reduced hysteresis properties. Cyclic organometallic compounds containing divalent metal atoms of Groups IIA and IIB of the Periodic System are employed as initiators of anionic polymerization of conjugated diene, vinyl aromatic and/or triene monomers. Coupling of the living ends of the resulting macrocyclic polymers or copolymers with a coupling agent or a coupling agent that is also a functionalizing agent results in stable macrocyclic polymers with improved hysteresis properties.

公开(公告)号：DE69809182D1

公开(公告)日：2002-12-12

申请号：DE69809182

申请日：1998-11-23

Applicant: BRIDGESTONE CORP

Inventor： LUO STEVEN ,  OZAWA YOICHI F ,  HALL JAMES E ,  KANG JUNG W

IPC: C08J5/18 ,  C08F4/69 ,  C08F136/00 ,  C08F136/06

Abstract: The instant invention teaches a method for forming a syndiotactic 1,2-polybutadiene product having a syndiotacticity of more than 66.5 % and a melting temperature of more than about 100 DEG C. The method includes polymerizing 1,3-butadiene in solution with a solvent, in the presence of catalytically effective amounts of: (a) an organomagnesium compound; (b) a chromium compound; and, (c) a dihydrocarbyl hydrogen phosphite. The present invention also contemplates a product of the method and an article made from the product.

公开(公告)号：DE69606893T2

公开(公告)日：2000-06-29

申请号：DE69606893

申请日：1996-01-29

Applicant: BRIDGESTONE CORP

Inventor： LAWSON DAVID F ,  STAYER JR MARK L ,  ANTKOWIAK THOMAS A ,  SCHREFFLER JOHN R ,  HALL JAMES E

IPC: B60C1/00 ,  C08C19/44 ,  C08F2/04 ,  C08F2/06 ,  C08F4/42 ,  C08F4/48 ,  C08F36/04 ,  C08K3/04 ,  C08L19/00 ,  C08L101/00 ,  C08L101/02

公开(公告)号：CA2255351A1

公开(公告)日：1999-06-23

申请号：CA2255351

申请日：1998-12-09

Applicant: BRIDGESTONE CORP

Inventor： HALL JAMES E ,  OZAWA YOICHI F ,  LUO STEVEN X L ,  KANG JUNG W

IPC: C08J5/18 ,  C08F4/69 ,  C08F136/00 ,  C08F136/06 ,  C08F36/06

Abstract: The instant invention teaches a method for forming a syndiotactic 1,2-polybutadi ene product having a syndiotacticity of more than 66.5 % and a melting temperature o f more than about 100~C. The method includes polymerizing 1,3-butadiene in solution with a s olvent, in the presence of catalytically effective amounts of: (a) an organomagnesium compound; (b) a chromium compound; and, (c) a dihydrocarbyl hydrogen phosphite. The present inve ntion also contemplates a product of the method and an article made from the product.

公开(公告)号：DE69321086T2

公开(公告)日：1999-02-25

申请号：DE69321086

申请日：1993-12-09

Applicant: BRIDGESTONE CORP

Inventor： HALL JAMES E

IPC: C08F2/44 ,  C08F212/00 ,  C08F212/06 ,  C08F236/10 ,  C08F297/04

Abstract: The present invention relates to a process for the dispersion copolymerization of 35 to 70% by weight of vinyl substituted aromatic monomer and 30 to 65% by weight of conjugated diene monomer comprising carrying out the copolymerization in a reaction mixture containing a liquid aliphatic hydrocarbon dispersing medium, an anionic catalyst system, and an "A" block of a copolymer dispersing agent, the dispersing agent having at least two polymer blocks wherein at least one of the polymer blocks is soluble in the dispersing medium and at least another of the polymer blocks is insoluble in the dispersing medium and is formed in situ.