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 R 1 , R 2 , R 3 are each independently selected from a group consisting of oxygen-containing C 2 -C 12 group and nitrogen-containing C 1 -C 12 group, the oxygen-containing C 2 -C 12 group has a carbon atom directly connected to oxygen atom of the alkoxysilane, the nitrogen-containing C 1 -C 12 group has a nitrogen atom directly connected to oxygen atom of the alkoxysilane, and R 4 is selected from a group consisting of C 1 -C 12 of alkyl, alkenyl, aryl, and alkoxy.
摘要:
Process for producing conjugated diene rubber and composition of the same conjugated diene rubber are presented. The process includes polymerizing a conjugated diene or a conjugated diene and a vinyl aromatic hydrocarbon in a hydrocarbon solution by anionic polymerization using an organic alkali metal compound to obtain conjugated diene rubber containing alkali metal in the polymer chain end reacting a conjugated diene rubber containing alkali metal in the polymer chain end with at least one organic silane compound to obtain a modified conjugated diene rubber. After or during the modified conjugated diene rubber contacting with large amount of water, solvent and water content are removed from the modified conjugated diene rubber by applicable hot sources, wherein coupling ratio of modified conjugated diene rubber is less than 40 %, coupling ratio of modified conjugated diene rubber after contact with water is at least 50 %, and difference of Mooney viscosity (MV) between initial MVi (after water treatment) and MVs (after storage test in 90 °C, 80 % relative humidity and 40 hours) is less than or equal to 10, and a mixture of silica compound and conjugated diene rubber.
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 R 5 is C 1 -C 12 alkyl, alkenyl, amine, ether, ketone or ester groups, R 3 and R 6 are C 1 -C 12 alkyl or alkenyl groups, R 4 and R 7 are C 1 ∼C 12 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:
A thermoplastic elastomer composition for crosslinked foam and the manufacturing method thereof are provided. The thermoplastic elastomer composition comprises (A) an ethylene-based copolymer; (B) a first copolymer; (C) a second copolymer, wherein the components (B) and (C) are copolymers comprising a vinyl aromatic monomer and a conjugated diene monomer, the first copolymer having a conjugated diene hydrogenation rate of at least 80% and the second copolymer having a conjugated diene hydrogenation rate of no more than 10%; (D) an organic peroxide; and (E) a foaming agent, wherein the mass ratio (A/(B+C)) of the component (A) to the combination of the component (B) and the component (C) is 95/5 to 5/95; and the mass ratio (B/C) of the component (B) to the component (C) is 9/1 to 1/9. A crosslinked foam made from the composition and the manufacturing method thereof are provided.