Abstract

The present invention belongs to the technical field of polymer hydrogenation modification, and particularly relates to a catalyst composition, a selective hydrogenation method for conjugated diene latex, a hydrogenated conjugated diene latex and the use thereof. The catalyst composition provided by the present invention comprises: a primary catalyst and a first cocatalyst, the primary catalyst being a ruthenium complex hydrogenation catalyst and/or an osmium complex hydrogenation catalyst, and the chemical structure of the first cocatalyst containing one or more of N, O, a carbon-carbon double bond and a carbon-carbon triple bond. The catalyst composition provided by the present invention allows for efficient selective hydrogenation of carbon-carbon double bonds of conjugated diene latex, can effectively reduce the amount of primary catalysts and cocatalysts used, involves mild hydrogenation conditions, achieves a lower residual amount of cocatalysts, achieves better properties of vulcanized rubber and high production efficiency, and eliminates gel problems.

IPC Classes  ?

• B01J 31/22 - Organic complexes
• C08C 19/02 - Hydrogenation

Abstract

The present disclosure provides a method for preparing aliphatic polyketone by continuous solution polymerization process and aliphatic polyketone; the method comprises the following steps: a) continuously feeding carbon monoxide, an olefin compound and a solvent system containing catalyst into a continuous flow reactor for solution polymerization to obtain an aliphatic polyketone; wherein the aliphatic polyketone has a particle size of 10 μm˜50 μm, a particle size distribution width Span of 0.5˜0.9, and a bulk density >0.35 g/ml. Compared with the prior art, in the method provided by the present disclosure, a solvent system containing a catalyst is adopted, and a continuous solution polymerization reaction is conducted to realize continuous feeding and continuous discharging, thereby effectively solving the problems such as difficulty in controlling the morphology of polymer particles, easy material hanging on the wall, low single-pot yield, and poor product repeatability in the traditional batch slurry process.

IPC Classes  ?

• C08G 67/02 - Copolymers of carbon monoxide and aliphatic unsaturated compounds
• B01J 31/12 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
• B01J 31/24 - Phosphines
• C08K 5/07 - AldehydesKetones

Abstract

The present invention provides a method for preparing an aliphatic polyketone by means of a continuous solution polymerization method, and an aliphatic polyketone. The method comprises the following steps: a) continuously feeding carbon monoxide, an olefin compound and a solvent system containing a catalyst into a continuous flow reactor to perform a solution polymerization reaction, so as to obtain an aliphatic polyketone, wherein the particle size of the aliphatic polyketone is 10-50 µm, the particle size distribution width Span is 0.5-0.9, and the stacking density is greater than 0.35 g/mL. Compared with the prior art, in the method provided in the present invention, a solvent system containing a catalyst is used, and continuous solution polymerization is carried out during a reaction to achieve continuous feeding and continuous discharging, so that the problems of polymer particle morphology regulation and control being difficult, materials being prone to hanging on the wall, the single kettle yield being low, the product repeatability being poor, etc., during a traditional batch slurry process are effectively solved, and an aliphatic polyketone having a weight-average molecular weight greater than 200 thousand, a molecular weight distribution less than 2.0, a stacking density greater than 0.35 g/mL, a particle size of 10-50 µm and a particle size distribution width Span of 0.5-0.9 can be obtained by means of polymerization.

IPC Classes  ?

• C08G 67/02 - Copolymers of carbon monoxide and aliphatic unsaturated compounds

Abstract

A method for industrial production of a butadiene-isoprene copolymer rubber having a trans-1,4-structure (TBIR) and an apparatus for implementing the method. The production method includes: pumping a predetermined amount of a butadiene and an isoprene into a polymerization reactor, and performing bulk polymerization in the presence of a catalyst to obtain TBIR; performing extrusion, devolatilization, granulation and drying on the produced TBIR, and then packaging the produced TBIR; and separating unreacted monomers by a recovery and separation device followed by separately refining the unreacted monomers, and then returning the unreacted monomers to a batching device or a storage tank. The production apparatus has a recovery and refining unit, a polymerization unit, a post-treatment unit and a utility unit. By the production apparatus and the production method industrial production of TBIR by bulk polymerization is realized.

IPC Classes  ?

• C08F 236/06 - Butadiene
• C08F 236/08 - Isoprene
• C08F 2/01 - Processes of polymerisation characterised by special features of the polymerisation apparatus used
• C08F 2/02 - Polymerisation in bulk
• C08F 2/42 - Polymerisation using regulators, e.g. chain terminating agents using short-stopping agents
• C08F 4/642 - Component covered by group with an organo-aluminium compound
• C08C 4/00 - Treatment of rubber before vulcanisation, not provided for in groups
• B01D 3/00 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
• B01D 3/14 - Fractional distillation
• B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes

Abstract

The present invention relates to a method for industrial production of a butadiene-isoprene copolymer rubber having a trans-1,4-structure (TBIR) and an apparatus for implementing the method. The production method comprises: pumping a predetermined amount of a butadiene and an isoprene into a polymerization reactor, and performing bulk polymerization in the presence of a catalyst to obtain TBIR; performing extrusion, devolatilization, granulation and drying on the produced TBIR, and then packaging the produced TBIR; and separating unreacted monomers by a recovery and separation device followed by separately refining the unreacted monomers, and then returning the unreacted monomers to a batching device or a storage tank. The production apparatus comprises a recovery and refining unit, a polymerization unit, a post-treatment unit and a utility unit. By means of the production apparatus and the production method, the present invention allows industrial production of TBIR by bulk polymerization.

IPC Classes  ?

• C08F 236/08 - Isoprene
• C08F 236/06 - Butadiene
• C08F 4/642 - Component covered by group with an organo-aluminium compound
• C08F 2/42 - Polymerisation using regulators, e.g. chain terminating agents using short-stopping agents
• C08F 2/02 - Polymerisation in bulk
• C08F 2/01 - Processes of polymerisation characterised by special features of the polymerisation apparatus used
• C08C 4/00 - Treatment of rubber before vulcanisation, not provided for in groups