Hydrogenation catalyst compositions and their use for hydrogenation of nitrile rubber

A technology of hydrogenation catalysts and compositions, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, catalytic reactions, etc.

Pending Publication Date: 2020-11-27
ARLANXEO DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] However, it is unknown whether this concept is applicable to other complex catalysts with different ligand structures

Method used

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  • Hydrogenation catalyst compositions and their use for hydrogenation of nitrile rubber
  • Hydrogenation catalyst compositions and their use for hydrogenation of nitrile rubber
  • Hydrogenation catalyst compositions and their use for hydrogenation of nitrile rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0346] Example 1*: (comparative example, use catalyst (1), in No In the case of EVE preprocessing)

[0347] Catalyst (1 ) (10.8 mg) was dissolved in 15 mL of degassed MCB in a flask. 36g with nitrogen The solution of 3431F in 247.5g MCB ( 3431F at a concentration of 15 wt.%) was bubbled in a 600 mL Parr autoclave for 30 minutes and then heated to 138°C. The catalyst solution in the flask was transferred into the reactor via syringe. The hydrogenation was carried out at a hydrogen pressure of 8.27 MPa and a stirring speed of 800 rpm. Samples were taken from the reactor at regular intervals for FT-IR analysis to determine the degree of hydrogenation. After 5 hours of hydrogenation, the degree of hydrogenation reached 85.0%. Final molecular weight and PDI are: Mn=59,471 g / mol, Mw=178,552 g / mol, PDI=3.

Embodiment 2

[0348] Example 2: (embodiment of the present invention: use catalyst (1), in use In the case of EVE as a co-catalyst)

[0349] Catalyst (1 ) (10.8 mg) was dissolved in 15 g of degassed MCB in a flask. Ethyl vinyl ether (0.375 mL) was injected into the flask and the solution was stirred at 20 °C for 12 hours. 36g with nitrogen The solution of 3431F in 247.5g MCB ( 3431F at a concentration of 15 wt.%) was bubbled in a 600 mL Parr autoclave for 30 minutes, and then heated to 138°C. The catalyst solution in the flask was transferred into the reactor via syringe. The hydrogenation was carried out at a hydrogen pressure of 8.27 MPa and a stirring speed of 800 rpm. Samples were taken from the reactor at regular intervals for FT-IR analysis to determine the degree of hydrogenation. After 5 hours of hydrogenation, the degree of hydrogenation reached 98.1%. Final molecular weight and PDI are: Mn = 64,283 g / mol, Mw = 186,381 g / mol, PDI = 2.9.

Embodiment 3

[0350] Example 3: (embodiment of the present invention: use catalyst (2), in use In the case of EVE as a co-catalyst)

[0351] Catalyst (2) (10.8 mg) was dissolved in 15 g of degassed MCB in a flask. Ethyl vinyl ether (0.375 mL) was injected into the flask and the solution was stirred for 12 hours. 36g with nitrogen The solution of 3431F in 247.5g MCB ( 3431F at a concentration of 15 wt.%) was bubbled in a 600 mL Parr autoclave for 30 minutes and then heated to 138°C. The catalyst solution in the flask was transferred into the reactor via syringe. The hydrogenation was carried out at a hydrogen pressure of 8.27 MPa and a stirring speed of 800 rpm. Samples were taken from the reactor at regular intervals for FT-IR analysis to determine the degree of hydrogenation. After 3 hours of hydrogenation, the degree of hydrogenation reached 98.9%. Final molecular weight and PDI are: Mn = 57,556 g / mol, Mw = 170,413 g / mol, PDI = 2.95.

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Abstract

This invention relates to novel hydrogenation catalyst compositions obtainable from reacting metal-based complex hydrogenation catalysts, preferably (annellated) iminovinyloxy Ru species such as knownby the trade names Umicore M41 or Umicore M42, with specific co-catalysts such as ethyl vinyl ether (EVE) and to a process for selectively hydrogenating nitrile rubbers in the presence of such novelhydrogenation catalyst compositions, optionally with prior metathetic decrease of molecular weight.

Description

technical field [0001] The present invention relates to a novel hydrogenation catalyst composition obtainable by reacting a metal-based complex hydrogenation catalyst with a specific cocatalyst, and to a method for selectively hydrogenating butyronitrile in the presence of such a novel hydrogenation catalyst composition rubber approach. Background technique [0002] The term "acrylonitrile-butadiene rubber" or "nitrile rubber", also referred to simply as "NBR", is to be interpreted broadly and means at least one α,β-unsaturated nitrile, at least one conjugated A rubber of a copolymer or terpolymer of a diene and, if desired, one or more additional copolymerizable monomers. [0003] Hydrogenated NBR, also referred to simply as "HNBR", is commercially produced by hydrogenating NBR. Therefore, the selective hydrogenation of carbon-carbon double bonds in diene-based polymers must be carried out without affecting nitrile groups and other functional groups in the polymer chain (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J31/22C08C19/02C08C19/08
CPCB01J31/0237B01J31/0258B01J31/0204B01J31/0218B01J31/0222B01J31/0267B01J31/2243B01J31/2273B01J31/2278B01J2231/543B01J2231/645B01J2531/821C08C19/02C08C2019/09B01J31/2217B01J31/2295B01J2231/643B01J2531/007C08L15/005
Inventor 柳庆春魏真理高念
Owner ARLANXEO DEUT GMBH
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