| Patent Number |
Title Of Patent |
Date Issued |
| 7247681 |
Preparation method of copolymer |
July 24, 2007 |
| The present invention provides a method for preparing a copolymer useful for the manufacture of tires by coupling the ends of a living polymer obtained from copolymerization of a diene monomer and a vinyl aromatic monomer in the presence of an organolithium catalyst and a hydrocarbon |
| 7151140 |
Preparation method of diene copolymer having improved rolling resistance and wet traction |
December 19, 2006 |
| The present invention provides a method for preparing a copolymer useful for the manufacture of tires by coupling the ends of a living polymer, obtained from copolymerization of a diene monomers in the presence of an organolithium initiator and a hydrocarbon solvent, with a multi-reactiv |
| 6951906 |
Process for hydrogenating a conjugated diene polymer |
October 4, 2005 |
| This invention relates to a process for selectively hydrogenating the unsaturated double bonds of conjugated diene units of a homopolymer or copolymer. By using a highly active novel homogeneous organo titanium catalyst represented by formula (I) and lithium hydride (LiH) prepared in |
| 6864326 |
Process for polymer hydrogenation using lithium hydride prepared from reactor equipped with high |
March 8, 2005 |
| The present invention relates to a process for polymer hydrogenation that includes: polymerizing or copolymerizing at least one conjugated diene in a hydrocarbon solvent using an organic alkali metal polymerization initiator to generate a living polymer; adding a terminating agent se |
| 6846873 |
End-modified diene copolymer and rubber composition for tire tread including the same |
January 25, 2005 |
| The present invention relates to an end-modified diene copolymer and a rubber composition for tire tread containing the same. More particularly, the present invention relates to a polymer and a rubber composition for tire tread comprising a mixture of the polymer with a vulcanizing agent |
| 6566480 |
Multi-reactive polysiloxane compound having halogen substituents and synthetic method thereof |
May 20, 2003 |
| A halogen-substituted reactive polysiloxane compound has a number average molecular weight of 400 to 100,000 and is represented by the formula Y--{C(R.sup.3)(R.sup.4)}.sub.c --CH.sub.2 CH.sub.2 --Si(R.sup.1)(R.sup.2)--{O--Si(R.sup.1)(R.sup.2)}.sub.d --CH.sub.2 CH.sub.2 --{C(R.sup.3)( |
| 6555644 |
Multi-reactive silicon compound having polyalkyleneglycol substituents and synthetic method ther |
April 29, 2003 |
| A multi-reactive silicon compound has at least one polyalkyleneglycol substituent with the number average molecular weight being 200 to 10,000 as synthesized by reacting an organohalosilane compound having H--Si bonds with a polyalkyleneglycol ether compound having unsaturated substituen |
| 6465609 |
Process for removal of metal catalyst from polymer selectively hydrogenated using organotitanium |
October 15, 2002 |
| The present invention provides an effective process for removal of the residual metal catalyst from a polymer solution using water and alcohol containing an inorganic acid after selective hydrogenation of the unsaturated olefinic double bonds in a polymer of a conjugated diene monome |
| 6040390 |
Process for hydrogenating conjugated diene polymers |
March 21, 2000 |
| This invention relates to a process for hydrogenating selectively the unsaturated double bonds of copolymer having the double bonds of conjugated diene unit, which has been widely used as a modifier of transparent impact-resistant resin or polyolefin, and polystyrene resin. According |
| 6020439 |
Method of hydrogenation of living polymer |
February 1, 2000 |
| A method for hydrogenating living polymers that include mainly conjugated double bond monomers and aromatic vinyl monomers. At least one conjugated diene compound is polymerized or copolymerized in an inert solvent by using a polymerization initiator of organic alkali metal. The produced |
| 5994477 |
Selective hydrogenation method of living polymer having olefinic double bond |
November 30, 1999 |
| There is provided a method for selectively hydrogenating a living polymer having olefinic double bonds. A monomer having at least one conjugated double bond, optionally together with an olefinic monomer, is polymerized in the presence of an alkyllithium polymerization initiator, to give |
| 5910566 |
Living polymer hydrogenation catalyst and process for hydrogenating polymers with the catalyst |
June 8, 1999 |
| This invention is to provide a process for the hydrogenation of conjugated diene polymer in an inert organic solvent, said polymer being obtained by polymerization or copolymerization of a conjugated diene, which comprise effecting selective hydrogenation of unsaturated double bonds in t |
| 5753778 |
Method for selectively hydrogenating a living polymer having olefinic double bonds |
May 19, 1998 |
| There is provided a method for selectively hydrogenating living polymers having olefinic double bonds, in which the living polymers resulting from the polymerization initiated by alkyllithium compound are deactivated by contacting the polymerization terminators for a short time under a m |
| 5677416 |
Flame-retardant wholly aromatic polyester and method for preparing the same |
October 14, 1997 |
| There are disclosed a wholly aromatic polyester represented by formula I with enhanced flame retardance and chemical stability, and a method for the preparing the same. The polymer is prepared in interface polymerization wherein an alkali aqueous phase containing cyclotriphosphagene- |
