Tsrc Corporation

Shun-An Liu

Fu Lin

Chih-Kuang Tsai

Jing-Cherng Tsai

A catalyst composition and a method for hydrogenating a polymer having a conjugated diene are provided. The catalyst composition includes (a) a first composition having one of a bis(cyclopendienyl, fluorenyl, indenyl and derivatives thereof) titanium compound and a mixture thereof; (b) a second composition having one selected from the group consisting of a first compound of a formula (II), a second compound of a formula (III) and a mixture thereof: wherein the formula (II) has a chain structure, the formula (III) has a cyclic structure, the R is C&#x2dc;Calkyl, the Xand Xare ones selected from the group consisting of C&#x2dc;Calkyl, C&#x2dc;Ccycloalkoxy, aryl, C&#x2dc;Calkyl aryl and carbonyl, and n&#x3e;1 and m&#x3e;2; and (c) a third composition having an organic metallic compound.

Catalyst composition and method for hydrogenating a polymer having a conjugated diene

A process for hydrogenation of an unsaturated polymer. The conjugated diene polymer in an inert organic solvent is brought into contact with hydrogen in the presence of a hydrogenation catalyst composition to selectively hydrogenate the unsaturated double bonds in the conjugated diene units of the conjugated diene polymer. The hydrogenation catalyst composition includes: (a) a titanium compound; (b) a compound represented by formula (II) or formula (III): wherein Lis a Group IVA element, Lis a Group IVA element, Ris C&#x2013;Calkyl or C&#x2013;Ccycloalkyl, Ris C&#x2013;Calkyl or C&#x2013;Ccycloalkyl, and X, X, and Xcan be the same or different and are C&#x2013;Calkyl, C&#x2013;Calkoxy, C&#x2013;Ccycloalkoxy, phenyl, or phenoxy; and (c) a trialkylaluminum compound.

Hydrogenation catalyst composition and process for hydrogenation of conjugated diene polymer

A process for hydrogenation of a conjugated diene polymer. The conjugated diene polymer in an inert organic solvent is brought into contact with hydrogen in the presence of a hydrogenation catalyst composition to selectively hydrogenate the unsaturated double bonds in the conjugated diene units of the conjugated diene polymer. The hydrogenation catalyst composition includes: (I) a titanium compound; (II) a compound represented by formula (II):wherein L is a Group IVB element, R is C-Calkyl or C-Ccycloalkyl, X can be the same or different and is C-Calkyl, C-Calkoxy, C-Ccycloalkoxy, halogen, or carbonyl; and (III) a trialkylaluminum compound.

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Shun-An Liu