| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 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 |
| 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 |
| 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 |
