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Hydrogenation catalyst for olefin-based unsaturated bond-containing polymers, preparation method and applications thereof

A hydrogenation catalyst, unsaturated technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve low activity, low reaction efficiency, catalyst preparation Process complexity and other issues, to achieve good hydrogenation selectivity, the effect of simple preparation process

Inactive Publication Date: 2018-01-19
苏州双湖化工技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of low activity, low reaction efficiency and complicated catalyst preparation process of the hydrogenation catalyst used for unsaturated bond polymers in the prior art, and to provide a hydrogenation catalyst for unsaturated bond polymers Hydrogenation catalyst and its preparation method and application

Method used

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  • Hydrogenation catalyst for olefin-based unsaturated bond-containing polymers, preparation method and applications thereof
  • Hydrogenation catalyst for olefin-based unsaturated bond-containing polymers, preparation method and applications thereof
  • Hydrogenation catalyst for olefin-based unsaturated bond-containing polymers, preparation method and applications thereof

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preparation example Construction

[0041] The present invention also provides a preparation method of the above-mentioned hydrogenation catalyst, wherein the preparation method comprises:

[0042] First add (b) to (a) and mix evenly to obtain (a+b) mixture, then add (c) to (a+b) mixture and mix evenly to obtain (a+b+c) The liquid undergoes an aging reaction to obtain a hydrogenation catalyst,

[0043] or

[0044] First add (c) to (a) and mix evenly to obtain (a+c) mixture, then add (b) to (a+c) mixture and mix evenly to obtain (a+c+b) The liquid undergoes an aging reaction to obtain a hydrogenation catalyst,

[0045] Wherein, the aging time of the aging reaction is 5-90 minutes, the aging temperature is 0-80°C, preferably the aging time is 10-60 minutes, and the aging temperature is 20-60°C.

[0046] In the present invention, preferably components (a), (b) and (c) are dissolved with the same or different inert solvents before mixing to obtain solutions of components (a), b), and (c), to In terms of group VIII...

Embodiment 1

[0063] (1) Preparation of polymers containing olefinic unsaturated bonds

[0064] A 5L jacketed stirred reactor was fully replaced with purified nitrogen, 2.8L cyclohexane, 36mL purified styrene and tetrahydrofuran were added, and then 14.2mL of 0.3M n-butyllithium hexane solution was added to react at 50-60°C for 30 minutes, wherein The mol ratio of tetrahydrofuran and n-butyllithium is 35:1, continue to add 250mL refined butadiene to react for 30 minutes, then add 36mL purified styrene to react for 40 minutes, add isopropanol to terminate the reaction after the reaction is completed, isopropanol and The molar ratio of n-butyllithium is 1:1. Here, the concentration of styrene-butadiene-styrene block copolymer (S-B-S) is about 10wt% based on the whole polymerization system, the number average molecular weight of the block copolymer is 60000, styrene and butadiene monomer The weight ratio of the units is about 30:70, and the vinyl content of the butadiene segment in the polyme...

Embodiment 2

[0071] Polymer hydrogenation reaction is carried out according to the method of Example 1, the difference is that the polymerization solvent in step (1) and the solvent used for nickel naphthenate, triisobutylaluminum and butadiene in step (2) are n-hexane , Ni:Al:butadiene=1:6:1 in step (2). The hydrogenation reaction results are shown in Table 1.

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Abstract

The present invention relates to a hydrogenation catalyst for olefin-based unsaturated bond-containing polymers, a preparation method and applications thereof, wherein the hydrogenation catalyst comprises (a) an organic metal compound containing a group VIII element and / or a coordination compound containing a group VIII element, (b) an alkyl metal compound, and (c) a conjugated diolefin accordingto a molar ratio of (a) to (b) to (c) of 1:1-10:0.8-8. According to the present invention, the preparation method is simple, the preparation conditions are mild, the hydrogenation catalysis activity and the hydrogenation reaction efficiency of the prepared catalyst are high, and the prepared hydrogenation catalyst has advantages of good hydrogenation selectivity, mild hydrogenation condition, stable reaction process, easy control, and good stability, is insensitive to the temperature during the hydrogenation reaction, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a hydrogenation catalyst for unsaturated bond polymers, a preparation method and application thereof. Background technique [0002] In order to improve the heat resistance, oxygen stability, aging resistance and service temperature of polymers containing unsaturated bonds, hydrogenation is often used to saturate the unsaturated bonds in the polymers, usually requiring olefins in the polymers after hydrogenation The degree of hydrogenation of the unsaturated bond is greater than 98%, so as to realize the obvious improvement of the performance of the polymer, and at the same time expand the application field of the polymer. [0003] In the prior art, there have been many reports on the selective hydrogenation process of polymers. For example, U.S. Patent No. 3,595,942 discloses the use of the reaction product of an alkoxide of trialkylaluminum and transition metal nickel and / or cobalt for hydrogenation Catalyst, for the selectiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J31/14C08F8/04C08F236/10C08F293/00C08F297/00
Inventor 孙育成姜玉婷
Owner 苏州双湖化工技术有限公司