摘要:
A catalyst composition, a method for hydrogenating styrenic block copolymer employing the same, and a hydrogenated polymer from the method are provided. The method for hydrogenating styrenic block copolymer includes subjecting a hydrogenation process to a styrenic block copolymer in the presence of a catalyst composition. In particular, the catalyst composition includes an oxide carrier, and a catalyst disposed on the oxide carrier, wherein the catalyst includes a platinum-and-rhenium containing phosphorus compound.
摘要:
A modified conjugated diene rubber is disclosed. A method for producing the modified conjugated diene rubber includes providing an alkali metal ion-containing conjugated diene rubber; and reacting the alkali metal ion-containing conjugated diene rubber with an alkoxysilane to generate the modified conjugated diene rubber, the alkoxysilane being of the structural formula: wherein R1, R2, R3 are each independently selected from a group consisting of oxygen-containing C2-C12 group and nitrogen-containing C3-C12 group, the oxygen-containing C2-C12 group has a carbon atom directly connected to oxygen atom of the alkoxysilane, the nitrogen-containing C1-C12 group has a nitrogen atom directly connected to oxygen atom of the alkoxysilane, and R4 is selected from a group consisting of C3-C12 of alkyl, alkenyl, aryl, and alkoxy.
摘要:
A hydrogenation catalyst composition for hydrogenating a polymer of conjugated diene is provided. The polymer of conjugated diene is a homopolymer of conjugated diene or a copolymer of conjugated diene and vinyl aromatics. The hydrogenation catalyst composition includes: (a) a titanium compound, (b) a compound of formula (II), where R5 is C1˜C12 alkyl, alkenyl, amine, ether, ketone or ester groups, R3 and R6 are C1˜C12 alkyl or alkenyl groups, R4 and R7 are C1˜C12 alkyl, alkenyl, amine, ether, ketone or ester groups, n and m are integrals, 1≦n≦3, 1≦m≦3, and (c) alkyl aluminum.
摘要:
The present invention discloses a method for producing an epoxidized polymer. The method comprises the steps of: (1) providing a polymer solution containing a polymer having a conjugated diene group; (2) providing a catalyst solution dissolved in the polymer solution, the catalyst solution containing a transition metal ion and a ligand for bonding to the transition metal ion, the transition metal ion being selected from the group consisting of Ti, Mn, V, Mo, W and any combination thereof; and (3) epoxidizing double bonds of the conjugated diene group to produce the epoxidized polymer by providing an epoxidizing agent dissolved in the polymer solution containing the catalyst solution, wherein the epoxidizing agent is meta-chloroperoxybenzoic acid (mCPBA) or analogs thereof.
摘要:
A low-smoke, halogen-free and flame-retardant thermoplastic elastomer is provided in the present invention. The thermoplastic elastomer includes a polymer having a hydrogenated styrenic/conjugated diene copolymer, an inorganic phosphorus flame-retardant and a flame-retardant auxiliary, wherein a weight of the hydrogenated styrenic/conjugated diene copolymer is 50-100 percents of a weight of the polymer, a weight of the inorganic phosphorus flame-retardant is ranged from 0.3 to 2 times of the weight of the hydrogenated styrenic/conjugated diene copolymer, and a weight of the flame-retardant auxiliary is ranged from 0.05 to 0.4 times of the weight of the hydrogenated styrenic/conjugated diene copolymer.
摘要:
The present invention provides a conjugated diene based rubber comprising a conjugated diene based copolymer comprising at least two conjugated diene monomer units and optionally comprising a vinyl aromatic hydrocarbon monomer unit, wherein the conjugated diene based copolymer comprises a first block composed of a first conjugated diene monomer unit and the vinyl aromatic hydrocarbon monomer unit or a second conjugated diene monomer unit, the second conjugated diene monomer unit being distinct from the first conjugated diene monomer unit, the first block being random; and a second block, comprising at least the second conjugated diene monomer unit and optionally comprising the vinyl aromatic hydrocarbon monomer unit, wherein the first block is connected to the second block, and the amount of the vinyl aromatic hydrocarbon monomer units or the second conjugated diene monomer units is at least 35 wt % of the first block.
摘要:
The present invention provides a polymer composition for manufacturing a foam, the polymer composition comprising a vinyl aromatic based copolymer and a processing aid, wherein the amount of the processing aid in the total weight of the polymer composition is equal to or more than 5 wt % and equal to or less than 75 wt %; and the polymer composition does not comprise ethylene-vinyl acetate copolymer, ethylene-butyl acrylate copolymer, ethylene-α-olefin copolymer, homopolymer and copolymer of polyethylene, homopolymer and copolymer of polypropylene, homopolymer and copolymer of polybutene and olefin-based ionic polymer. The present invention also provides the foam and the method for forming the same.
摘要:
A catalyst composition for selectively hydrogenating a conjugated diene polymer in a homogeneous system is provided, wherein the conjugated diene polymer comprises a conjugated diene monomer or a combination of a conjugated diene monomer and a vinyl aromatic monomer. The catalyst composition includes the catalyst components of (a) a titanium compound; (b) an organometallic compound; and (c) an oligomer containing a polyglycol segment. The hydrogenated polymer produced using the catalyst composition and the method thereof is also provided.
摘要:
The present invention provides a polymer composition for pressure sensitive adhesives or films thereof. The polymer composition comprises 20-40 parts by weight of a tackifier; and 60-80 parts by weight of a polymer, wherein the polymer and the tackifier are 100 parts by weight. The polymer comprises at least a first vinyl aromatic based copolymer formed by polymerization of vinyl aromatic monomer and conjugated diene monomer, wherein a vinyl aromatic monomer content of the first vinyl aromatic based copolymer is 16 wt %˜28 wt %, a vinyl structure content of a conjugated diene monomer content in the first vinyl aromatic based copolymer is 32 wt %˜50 wt %; and a melt flow index (MFI) of the first vinyl aromatic based copolymer is 20 g/10 min˜60 g/10 min (230° C., 2.16 kg). The present invention also provides the pressure sensitive adhesives or films made from the polymer composition.
摘要:
A polymer composition for 3D printing is provided, wherein the polymer composition comprises a polymer including a vinyl aromatic based block copolymer composed of vinyl aromatic monomer and conjugated diene monomer, a vinyl aromatic monomer content of the vinyl aromatic based block copolymer is less than 25% by weight, and the polymer does not contain polyolefin, polylactide, polycarbonate, polyamide, polymethylmethacrylate, poly(methyl acrylate), polyvinylchloride, poly(vinylidene chloride), polyester, vinyl acetate copolymer and styrene-based resin.