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Hydrogenization catalyst composition and application thereof for hydrogenization conjugated diene polyalcohol

A composition and polymer technology, applied in the direction of organic compound/hydride/coordination complex catalyst, chemical/physical process, physical/chemical process catalyst, etc. The problems of high cost and high equipment cost can achieve the effect of good activity durability, improved hydrogenation degree and low residual amount.

Inactive Publication Date: 2008-08-27
CHI MEI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of hydrogenation catalyst composition has good activity and reproducibility, but its reaction operating pressure (hydrogen gas) is high, the equipment cost is high, and the conjugated diene polymer obtained by hydrogenation has an odor, and its hydrogenation degree is also close to 80% only
In addition, if the hydrogenation reaction is carried out in medium and large reactors, the activity of the catalyst composition at the end of the reaction is even worse, and it is impossible to obtain a polymer with a good degree of hydrogenation.

Method used

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  • Hydrogenization catalyst composition and application thereof for hydrogenization conjugated diene polyalcohol
  • Hydrogenization catalyst composition and application thereof for hydrogenization conjugated diene polyalcohol
  • Hydrogenization catalyst composition and application thereof for hydrogenization conjugated diene polyalcohol

Examples

Experimental program
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Effect test

Embodiment 1

[0098] After the above-mentioned preparation examples obtained the conjugated diene polymer glue, feed hydrogen (5kg / cm 2 ) to the reactor nitrogen N 2 Get rid of, and prepare the solution of each component of hydrogenation catalyst composition, dicyclopentadienyl titanium dichloride (Cp 2 TiCl 2 ) is dissolved in cyclohexane to form a 0.12% by weight solution, polymethylhydrogensiloxane is dissolved in cyclohexane to form a 0.75% by weight solution, tetrakis(isopropoxy)titanium (TPT) is dissolved in cyclohexane to form 0.2% by weight solution and n-butyllithium were dissolved in cyclohexane to form an 8% by weight solution; the prepared hydrogenation catalyst composition was added to the reactor according to the amounts in Table 1, and the hydrogenation temperature was 75 ° C. Pressure 5kg / cm 2 hydrogenation under the conditions of 8 hours to obtain the hydrogenated conjugated diene polymer of the present invention; The operating pressure and hydrogenation temperature of ...

Embodiment 2～11

[0100] The same operation mode as in Example 1, and according to the formula and hydrogenation conditions of the hydrogenation catalyst composition in Table 1, the hydrogenated conjugated diene polymer of the present invention, the degree of hydrogenation and the trans The structural residues are shown in Table 3. In addition, the hydrogenated conjugated diene polymers in Examples 2-11 have no odor, and the hydrogenated conjugated diene polymers in Examples 2-3 are yellow in appearance after thermal stability testing.

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Abstract

The invention provides a hydrogenating catalyst composition, which comprises: (1) a titanium compound (A) of the formula (a) as follow, (2) a silyl hydride compound (B), (3) and a compound (C) of the formula (e) as follow. The hydrogenating catalyst composition has good activity durability, and improves the hydrogenation of the polymer. In particular, when the hydrogenating catalyst composition is used for the hydrogenation of conjugated diene polymer, trans-structure of the conjugated diene polymer has high hydrogenation, and an odourless hydrogenated conjugated diene polymer with good thermostability can be acquired.

Description

technical field [0001] The present invention relates to a hydrogenation catalyst composition, in particular to a hydrogenation catalyst composition suitable for hydrogenation of conjugated diene polymers. Background technique [0002] In general, the polymerization or copolymerization of conjugated diene monomers such as butadiene and isoprene to prepare synthetic rubber has been widely used industrially for commercial production. Basically, these polymers can be prepared using either emulsification (free radical polymerization) or solution (anionic polymerization) methods, but both methods result in polymers with conjugated diatoms containing unsaturated double bonds in the backbone. vinyl polymers (copolymers). However, since these unsaturated double bonds are easily oxidized, the polymer has the disadvantage of being unstable under high temperature or weathering test (ie, exposure to ozone or sunlight or ultraviolet radiation). In order to improve the shortcoming that t...

Claims

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Application Information

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IPC IPC(8): B01J31/12C08F8/04C08F36/04
Inventor 郑贵伦黄辰宝
Owner CHI MEI CORP
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