Abstract: A method for manufacturing a piezoresistive material, a piezoresistive composition and a pressure sensor device are provided. The piezoresistive composition includes a conductive carbon material, a solvent, a dispersive agent, an unsaturated polyester and a crosslinking agent. The conductive carbon material is selected from a group consisting of multi-wall nanotube, single-wall carbon nanotube, carbon nanocapsule, graphene, graphite nanoflake, carbon black, and a combination thereof. The solvent is selected from a group consisting of ethyl acetate, butyl acetate, hexane, propylene glycol mono-methyl ether acetate and a combination thereof. The dispersive agent includes block polymer solution with functional groups providing the affinity. The unsaturated polyester is selected from a group consisting of an ortho-phthalic type unsaturated polyester, an iso-phthalic type unsaturated polyester, and a combination thereof.

Abstract: The disclosed is a comb-shaped graft copolymer, including a back bone of PMMA and side chains of a random copolymer, a block copolymer, or a homopolymer polymerized of a monomer having a carbon-carbon double bond. The monomer can be alkyl acrylate, styrene, and the likes. The side chains terminal is grafted to a nitro-oxy compound.

Abstract: The disclosed is a comb-shaped graft copolymer, including a back bone of PMMA and side chains of a random copolymer, a block copolymer, or a homopolymer polymerized of a monomer having a carbon-carbon double bond. The monomer can be alkyl acrylate, styrene, and the likes. The side chains terminal is grafted to a nitro-oxy compound.

Abstract: Disclosed is a method for manufacturing a polyester film with low thermal expansion. 95 wt % to 55 wt % of crystalline polyester and 5 wt % to 45 wt % of amorphous polyester are mixed. The blend is then melt extruded to form a sheet. The sheet is then biaxially stretched to obtain a film. The biaxially stretched film is then treated with a heat-setting procedure.

Abstract: The disclosure provides a catalyst carrier, including a nano carbon material; and a polymer grafted on the nano carbon material, wherein the polymer has a repetitive unit comprising a phosphorous atom. The disclosure further provides a catalyst deposited on the catalyst carrier of the disclosure. The catalyst of the disclosure has high reactivity, and is easy to be recovered in C—C coupling reactions such as a Suzuki-Miyaura coupling reaction.

Abstract: The disclosure provides a catalyst carrier, including a nano carbon material; and a polymer grafted on the nano carbon material, wherein the polymer has a repetitive unit comprising a phosphorous atom. The disclosure further provides a catalyst deposited on the catalyst carrier of the disclosure. The catalyst of the disclosure has high reactivity, and is easy to be recovered in C—C coupling reactions such as a Suzuki-Miyaura coupling reaction.

Abstract: The present disclosure is related to a carbon-nanomaterial-supported catalyst, including: a carbon nanomaterial, and a polymer grafted onto the carbon nanomaterial, wherein the polymer has a repeat unit containing a phosphonium salt and its molecular weight is 1,000-200,000. The disclosure is also related to a method of preparing carbonate, which includes using the carbon nanomaterial-supported catalyst for the cycloaddition reaction of carbon dioxide into the epoxy group.

Abstract: A method for manufacturing a piezoresistive material, a piezoresistive composition and a pressure sensor device are provided. The piezoresistive composition includes a conductive carbon material, a solvent, a dispersive agent, an unsaturated polyester and a crosslinking agent. The conductive carbon material is selected from a group consisting of multi-wall nanotube, single-wall carbon nanotube, carbon nanocapsule, graphene, graphite nanoflake, carbon black, and a combination thereof. The solvent is selected from a group consisting of ethyl acetate, butyl acetate, hexane, propylene glycol mono-methyl ether acetate and a combination thereof. The dispersive agent includes block polymer solution with functional groups providing the affinity. The unsaturated polyester is selected from a group consisting of an ortho-phthalic type unsaturated polyester, an iso-phthalic type unsaturated polyester, and a combination thereof.

Abstract: An acrylic copolymer with high heat-resistance is provided. The acrylic copolymer includes repeat units of a monomer of Formula (1) and repeat units of a methacrylic monomer derivative: wherein x is 1-3 and y is 0-3. The acrylic copolymer possesses high heat-resistance and low water absorptivity. The invention also provides a method for preparing the acrylic copolymer.

Abstract: A thiocarbonylthio compound and free radical polymerization employing the same. The thiocarbonylthio compound is represented by formula (I) or (II): wherein Z can be independently perfluoroalkyl, alkyl, haloalkyl, aryl, alkylaryl, haloalkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy, alkoxyaryl, alkylsulfonyl, alkylsulfonylaryl, dialkylphosphinyl, or dialkylphosphinothioyl; R1 and R2 can be each independently hydrogen, alkyl, aryl, alkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy or alkoxyaryl; R3 is alkyl, aryl, aminoalkyl, alkylamino, alkoxy or alkoxyaryl. Furthermore, R3 can also be alkyl, aryl, alkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy, haloalkylaryl, alkylsilyl, alkylthio, alkylthioaryl, or substituent containing CN, CO, COOH, COOCH3 or heterocyclic moieties; and R4 is perfluoroalkyl. The thiocarbonylthio compound can be used as a reversible chain transfer agent in a free radical polymerization to obtain a polymer with a controlled molecular weight and narrow polydispersity.

Abstract: A hydrogenation catalyst system is provided. The catalyst system includes a metal complex of Formula (I), an organic lithium compound and an organic compound having a cyclic structure including at least one double bond. In Formula (I), M is transition metals. R1, R2, R3, R4 and R5 are the same or different, including hydrogen, C1-8 alkyl, and C1-8 alkoxy, or two of R1, R2, R3, R4 and R5 are linked together to form a ring. X1, X2 and X3 are a cyclic group, hydrogen, chlorine, bromine, alkyl or alkoxy, wherein when one of X1, X2 and X3 is a cyclic group, and the others are the same or different, including hydrogen, chlorine, bromine, alkyl or alkoxy. The invention also provides a selective hydrogenation process utilizing the catalyst system.

Abstract: A method of functionalizing nano-carbon materials with a diameter less than 1 ?m, comprising: contacting the nano-carbon materials with a free radical generating compound such as azo-compound in an organic solvent under an inert gas atmosphere, thereby obtaining nano-carbon materials with functional groups thereon. The physical and chemical properties of the nano-carbon materials can be modified through the aforementioned method.

Abstract: A method of functionalizing nano-carbon materials with a diameter less than 1 ?m, comprising: contacting the nano-carbon materials with a free radical generating compound such as azo-compound in an organic solvent under an inert gas atmosphere, thereby obtaining nano-carbon materials with functional groups thereon. The physical and chemical properties of the nano-carbon materials can be modified through the aforementioned method.

Abstract: An acrylic copolymer with high heat-resistance is provided. The acrylic copolymer includes repeat units of a monomer of Formula (1) and repeat units of a methacrylic monomer derivative: wherein x is 1-3 and y is 0-3. The acrylic copolymer possesses high heat-resistance and low water absorptivity. The invention also provides a method for preparing the acrylic copolymer.

Abstract: The disclosed is about a hydroformylation of a cyclic olefin with rhodium catalyst, and specifically about the recovering of the rhodium catalyst. Aldehyde and the cyclic olefin are added into a rhodium catalyst solution to process a hydroformylation, thereby forming the product cycloalkyl aldehyde. Afterwards, the result is divided into two layers. The upper layer is substantially rhodium catalyst solution, and the lower layer is substantially cycloalkyl aldehyde and the aldehyde. After separation, the upper layer is reserved to process next hydroformylation reaction with newly added cyclic olefin.

Abstract: The disclosed is about a hydroformylation of a cyclic olefin with rhodium catalyst, and specifically about the recovering of the rhodium catalyst. Aldehyde and the cyclic olefin are added into a rhodium catalyst solution to process a hydroformylation, thereby forming the product cycloalkyl aldehyde. Afterwards, the result is divided into two layers. The upper layer is substantially rhodium catalyst solution, and the lower layer is substantially cycloalkyl aldehyde and the aldehyde. After separation, the upper layer is reserved to process next hydroformylation reaction with newly added cyclic olefin.

Abstract: A thiocarbonylthio compound and free radical polymerization employing the same. The thiocarbonylthio compound is represented by formula (I) or (II): wherein Z can be independently perfluoroalkyl, alkyl, haloalkyl, aryl, alkylaryl, haloalkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy, alkoxyaryl, alkylsulfonyl, alkylsulfonylaryl, dialkylphosphinyl, or dialkylphosphinothioyl; R1 and R2 can be each independently hydrogen, alkyl, aryl, alkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy or alkoxyaryl; R3 is alkyl, aryl, aminoalkyl, alkylamino, alkoxy or alkoxyaryl. Furthermore, R can also be alkyl, aryl, alkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy, haloalkylaryl, alkylsilyl, alkylthio, alkylthioaryl, or substituent contaning CN, CO, COOH, COOCH3 or heterocyclic moieties; and R4 is perfluoroalkyl. The thiocarbonylthio compound can be used as a reversible chain transfer agent in a free radical polymerization to obtain a polymer with a controlled molecular weight and narrow polydispersity.

Abstract: The disclosed is about a hydroformylation reaction of a cyclic olefin in the presence of a rhodium catalyst, and specifically about recovering the rhodium catalyst. After the cyclic olefin is hydroformylated by the rhodium catalyst, the product solution is added an extraction liquid including a cycloalkyl alcohol and separated into two layers. The upper layer is substantially made up of the rhodium catalyst solution, and the lower layer is substantially made up of the cycloalkyl aldehyde and the extraction solution including cycloalkyl alcohol.

Abstract: A thiocarbonylthio compound and free radical polymerization employing the same. The thiocarbonylthio compound is represented by formula (I) or (II): wherein Z can be independently perfluoroalkyl, alkyl, haloalkyl, aryl, alkylaryl, haloalkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy, alkoxyaryl, alkylsulfonyl, alkylsulfonylaryl, dialkylphosphinyl, or dialkylphosphinothioyl; R1 and R2 can be each independently hydrogen, alkyl, aryl, alkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy or alkoxyaryl; R3 is alkyl, aryl, aminoalkyl, alkylamino, alkoxy or alkoxyaryl. Furthermore, R can also be alkyl, aryl, alkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy, haloalkylaryl, alkylsilyl, alkylthio, alkylthioaryl, or substituent contaning CN, CO, COOH, COOCH3 or heterocyclic moieties; and R4 is perfluoroalkyl. The thiocarbonylthio compound can be used as a reversible chain transfer agent in a free radical polymerization to obtain a polymer with a controlled molecular weight and narrow polydispersity.

Abstract: The disclosed is about a hydroformylation reaction of a cyclic olefin in the presence of a rhodium catalyst, and specifically about recovering the rhodium catalyst. After the cyclic olefin is hydroformylated by the rhodium catalyst, the product solution is added an extraction liquid including a cycloalkyl alcohol and separated into two layers. The upper layer is substantially made up of the rhodium catalyst solution, and the lower layer is substantially made up of the cycloalkyl aldehyde and the extraction solution including cycloalkyl alcohol.