Industrial Technology Research Institute

Other

Tsrc Corporation

Jing-Cherng Tsai

Yi-Chun Chen

Shian-Jy Jassy Wang

Bor-Ping Wang

Ching Ting

Shu-Hua Chan

Wen-Sheng Chang

Yu-Shan Chao

Fu Lin

Chih-Kuang Tsai

Chao-Ying Yu

Tsai-Tien Su

Shun-An Liu

Yuh-Yuan Wei

Sung-Song Hua

Ming-Yuan Wu

Tung-Ying Hsieh

Yu-Hwa E Sheu

Joung-Yei Chen

In-Mau Chen

Sheng Te Yang

Chen-Pao Huang

Shu-Ling Peng

Chi-Lan Li

Mickey Sue

Kuang-Kai Liu

Huai-Mei Chou

Wee-Pin Chao

Hung-Yang Hsiao

Chih-Nan Chu

Hsiao-Fang Li

Meei-Hwa Wang

Hsi-Hui Tai

Chen-Pang Liu

Jui-Hsien Huang

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 catalyst composition for preparing olefin polymers. The catalyst composition includes a metallocene compound and an activating cocatalyst. In the metallocene compound, two cyclopentadienyl groups are bridged by X (carbon, silicon, germanium or tin) in a ring structure. The bite angle &#x3b8; formed by the two cyclopentadienyl rings and X is equal to or greater than 100 degrees. The obtained olefin polymer has high cycloolefin conversion and a high glass transition temperature. In addition, the catalyst composition can still maintain relatively high activity at high temperature reaction conditions.

Catalyst composition for preparing olefin polymers

A catalyst composition for preparing olefin polymers. The catalyst composition includes a metallocene compound and an activating cocatalyst. In the metallocene compound, two cyclopentadienyl groups are bridged by X (carbon) in a ring structure and the bridge X forms a three-, four-, or five-member ring structure. The bite angle &#x3b8; formed by the two cyclopentadienyl rings and X is equal to or greater than 100 degrees. The obtained olefin polymer has high cycloolefin conversion and a high glass transition temperature. In addition, the catalyst composition can still maintain relatively high activity at high temperature reaction conditions. The metallocene compound is represented by formula (I) below.

Graft copolymer of syndiotactic styrene copolymer

Catalyst composition for hydrogenation of conjugated diene based synthetic rubbers

The present invention provides a novel bimetallic metallocene with a high catalytic activity for preparing olefin polymers having a narrow MWD.

Bimetallic metallocene catalyst for preparing olefin polymer

A novel dinuclear metallocene complex is disclosed, which is represented by the following formula (I):

Dinuclear metallocene catalyst for preparing high molecular weight olefin polymer

A catalyst composition for preparing high-syndiotacticity polystyrene polymers which comprises: (a) a titanium complex represented by the following formula of TiR&prime;,R&prime;,R&prime;,R&prime;,or TiR&prime;,R&prime;,R&prime;,, wherein R&prime;,, R&prime;,, R&prime;,, and R&prime;,are, independently, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a hydrogen atom, or a halogen atom; (b) a cyclopentadienyl complex represented by the following formula:

Groups IIA and IIIA based catalyst composition for preparing high-syndiotacticity polystyrene

A metallocene complex in which the cyclopentadienyl group is substituted with an alkanediyl silyl group. The yield of the metallocene complex is high, and it can be used as the catalyst for preparing high molecular weight olefin polymers.

Metallocene catalyst for preparing olefin polymer

A novel organometallic compound is disclosed which can be used, in conjunction with a trialkyl or bialkyl aluminum cocatalyst, for catalyzing the polymerization and copolymerization of ethylene without requiring the use of either methyl aluminoxane or borate as cocatalyst. The organometallic compound is represented by the formula of (C.sub.5 R.sub.n H.sub.5-n)(L)MX.sub.a Y.sub.b ; wherein: (a) C.sub.5 R.sub.n H.sub.5-n is a substituted or unsubstituted cyclopentadienyl group, in which n is an integer between 0 and 5, and R is C.sub.1 to C.sub.6 alkyl group; (b) L is tetrapyrazolyl borate, hydrotrispyrazolyl borate, dihydrobispyrazolyl borate or hydrotris(3,5-dimethylpyrazolyl) borate; (c) M is a Group IIIB, Grcup IVB, or Group VB transitional metal; (d) a and b are integers such that a+b=m-2, where m is the valance of M; and (e) X and Y, which can be the same of different from each other, are halogen atoms or ligands represented by the formula of ER.sup.1 or ER.sup.1 R.sup.2, where E is a Group VA or VIA element, and R.sup.1 and R.sup.2, which can be the same or different from each other, are C.sub.1 to C.sub.6 alkyl group or substituted aryl group. Preferably, M is a Group IVB transitional metal and a=b=1, and the organometallic compound is then represented by the formula of (C.sub.5 R.sub.n H.sub.5-n)(L)MXY.

Single site catalyst with methyl aluminoxane or borate free and their

The present invention discloses an improved catalyst composition for preparing 5-formylvalerate esters by hydroformylation of pentenoic esters monoxide with good activity, high selectivity in the presence of hydrogen and carbon.

Catalyst composition for preparing 5-formyl valaric esters from

A catalyst composition for the preparation of 3-pentenoic ester from butadiene. The catalyst composition includes a palladium complex; and a bidentate phosphine with the following formula: .sub.1 R.sub.2 P--(CH.sub.2)n--PR.sub.3 R.sub.4, wherein n is a integer from 1 to 6; and a bulky benzoic carboxylic acid.

Catalyst composition for preparing 3-pentenoic ester from butadiene

A novel organometallic compound is disclosed which can be used, in conjunction with a trialkyl or bialkyl aluminum cocatalyst, for catalyzing the polymerization and copolymerization of ethylene without requiring the use of either methyl aluminoxane or borate as cocatalyst. The organometallic compound is represented by the formula of (CR.sub.5 R.sub.n H.sub.5-n)(L)MX.sub.a Y.sub.b ; wherein: (a) C.sub.5 R.sub.n H.sub.5-n is a substituted or unsubstituted cyclopentadienyl group, in which n is an integer between 0 and 5, and R is C.sub.1 to C.sub.6 alkyl group; (b) L is tetrapyrazolyl borate, hydrotrispyrazolyl borate, dihydrobispyrazolyl borate or hydrotris(3,5-dimethylpyrazolyl) borate; (c) M is a Group IIIB, Group IVB, or Group VB transitional metal; (d) a and b are integers such that a+b=m-2, where m is the valance of M; and (e) X and Y, which can be the same of different from each other, are halogen atoms or ligands represented by the formula of ER.sup.1, where E is a Group VA or VIA element, and R.sup.1 is C.sub.1 to C.sub.6 alkyl group, aryl group or halogen-substituted aryl group. Preferably, M is a Group IVB transitional metal and a=b=1, and the organometallic compound is then represented by the formula of (C.sub.5 R.sub.n H.sub.5-n)(L)MXY.

Single site catalysts with MAO or borate free and their application for

An catalyst composition for preparing high-syndiotacticity polystyrene polymers which comprises: (a) a titanium complex represented by the following formula of TiR'.sub.1 R'.sub.2 R'.sub.3 R'.sub.4 or TiR'.sub.1 R'.sub.2 R'.sub.3, wherein R'.sub.1, R'.sub.2, R'.sub.3, and R'.sub.4 are, independently, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a hydrogen atom, or a halogen atom; (b) a cyclopentadienyl complex of silicon (Si), germanium (Ge), or tin (Sn) represented by the following formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are, independently, an alkyl group, an aryl group, a silyl group, a germanyl group, a stannyl group, or a halogen atom; R is an alkyl group, aryl group, a hydrogen atom, or a halogen element; and X can be one of the Group IVA elements of silicon (Si), germanium (Ge), or tin (Sn); and (c) an activated transitional metal co-catalyst, which can be methyl aluminoxane, or a mixture containing a non-coordinated Lewis add (a Lewis acid is an electron-pair donor) and a trialkyl aluminum, such as triethyl aluminum or tetraisobutyl aluminum.

Catalyst composition for preparing high syndiotacticity polystyrene from

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Kaohsiung, Taiwan

Jing-Cherng Tsai