Chi Mei Corporation

Chih-Cheng Lee

Kuei-Lun Cheng

Kuan-Lin Hsieh

Hung-Jui Kuo

Chen-Pao Huang

A thermoplastic resin composition includes a rubber-modified polystyrene-based resin, a pentaerythritol ester compound and a fatty acid amide compound, wherein a total content of the pentaerythritol ester compound and the fatty acid amide compound is ranging from 4 parts to 8 parts by weight based on 100 parts by weight of the rubber-modified polystyrene-based resin, and a ratio of a content of the pentaerythritol ester compound to the total content of the pentaerythritol ester compound and the fatty acid amide compound is in a range of larger than 0.2 to less than 0.83.

Thermoplastic resin composition and product formed therefrom

A modified high-cis isoprene polymer, a method for producing the same, and a tire containing the aforementioned polymer are provided. A polymerization reaction is performed on isoprene monomers in an organometallic catalyst system to form a high-cis isoprene polymer having an organometallic active site, wherein the organometallic active site is formed by an organometallic catalyst system. The high-cis isoprene polymer having the organometallic active site is reacted with a modifier mixture including a first modifier and a second modifier via the organometallic active site. The first modifier and the second modifier are compounds represented by formula 1 and formula 2, respectively:X&#x2014;R1-Si(R2)&#x2003;&#x2003;formula 1, andR3-Si(R4)&#x2003;&#x2003;formula 2,

Modified high-cis isoprene polymer, method for producing the same, and tire containing aforementioned polymer

A rubber composition and a method for manufacturing the same are provided. The rubber composition includes a main chain modified conjugated diene based polymer and a stabilizer. A weight ratio of the main chain modified conjugated diene based polymer to the stabilizer is 100:0.2&#x2dc;2. The stabilizer has a structural formula of: 

Rubber composition and manufacturing method for the same

A modified high cis butadiene-isoprene copolymer, a method for producing the same, and a tire having the aforementioned polymer are provided. The method includes performing a polymerization step for forming a high cis butadiene-isoprene copolymer having an organometallic active site and reacting which copolymer with a modifier mixture via the organometallic active site for forming the modified high cis butadiene-isoprene copolymer. The modifier mixture comprises a first modifier and a second modifier. The first modifier has a chemical formula of X&#x2014;R1-Si(R2), wherein X is an glycidoxy functional group, an isocyanate functional group, or a 2-(3,4-epoxycyclohexyl group), R1 is an alkylene group, and R2 is an alkyl group or an alkoxy group. The second modifier has a chemical formula of R3-Si(R4), wherein R3 is an alkoxy group or an aryloxy group, and R4 is an alkyl group, an alkoxy group, an aryloxy group or a cycloalkyl group.

Modified high cis butadiene-isoprene copolymer, method for producing the same and tire having aforementioned polymer

Provided is a polymerization method of a modified copolymer of conjugated diene and vinyl aromatic hydrocarbon. A multi-functional vinyl benzene-based compound is reacted with an organic alkali metal compound to form a star shaped compound with multiple active sites. A conjugated diene monomer, a vinyl aromatic hydrocarbon monomer, and the star shaped compound with multiple active sites are reacted with each other to form a copolymer of conjugated diene and vinyl aromatic hydrocarbon. The copolymer of conjugated diene and vinyl aromatic hydrocarbon is then reacted with a modifier to form the modified copolymer of conjugated diene and vinyl aromatic hydrocarbon. The modifier is represented by formula 1, 

Modified copolymer of conjugated diene and vinyl aromatic hydrocarbon and polymerization method thereof

The present invention relates to a polysiloxane compound having a structure represented by formula 1: 

Polysiloxane compound, modified conjugated diene-vinyl aromatic copolymer and preparing method thereof

Provided is a synthesis method of a modified conjugated diene polymer. Conjugated diene monomers are reacted in a reaction system. A modifier is added into the reaction system while the reaction proceeds to a predetermined extent. The modifier has a structure represented by formula (1): wherein R-Reach independently represent a C-Calkyl group; 1&#x2266;m&#x2266;300; 0&#x2266;a&#x2266;65; 0&#x2266;b&#x2266;65; 0&#x2266;c&#x2266;40; 0&#x3c;a+b; 0&#x2266;c/(a+b+c)&#x2266;0.8; the X and Y are structures respectively represented by formula (2) and formula (3): wherein R, R, and Reach independently represent a C-Calkylene group and R-Reach independently represent a C-Calkyl group.

Modified conjugated diene polymer and synthesis method thereof

A modified conjugated diene copolymer and a preparing method for the same are provided. The method comprising a polymerization step for polymerizing conjugated diene monomers to form a conjugated diene polymer; and a modifying step for reacting the conjugated diene polymer with a modifier to form a modified conjugated diene polymer. The modifier includes a polythiol ester compound, a polythiol alkane compound or a combination thereof, the polythiol ester compound has a chemical formula (I):R-(O&#x2014;C(&#x2550;O)R-SH)&#x2003;&#x2003;(I). The polythiol alkane compound has a chemical formula (II):HS&#x2014;(CH)&#x2014;(R)CHSH&#x2003;&#x2003;(II).

Modified high CIS conjugated diene copolymer and preparing method of the same

A modified conjugated diene polymer and a manufacturing method for the same are provided. The modified conjugated diene polymer is manufactured by the method including, forming a conjugated diene polymer by a polymerization step and making it react with a first modifier and then react with a second modifier. The modified conjugated diene polymer has over 97% of cis-1,4 structure. A PDI of the modified conjugated diene polymer is bigger than 1.8 and smaller than 2.5. The first modifier has a chemical formula of X&#x2014;R1-Si(R2). The second modifier has a chemical formula of R3-Si(R4).

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Tainan, Taiwan

Chih-Cheng Lee