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Vanadium catalyst and preparation method of vanadium catalyst as well as preparation method of ethylene-propylene copolymer

A catalyst and vanadium-based technology, applied in the field of polymer synthesis, can solve the problems of inability to improve catalyst activity, poor stability, and high toxicity, and achieve the effects of low risk, high catalytic activity, and high catalytic activity

Active Publication Date: 2012-12-19
中科应化(长春)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The inventor is committed to the development of vanadium-based catalysts for the preparation of ethylene-propylene rubber, and the existing invention patent (ZL200710055981.X) has solved the problem of VCl under the condition of ensuring polymerization activity. 3 , VCl 4 and VOCl 3 Volatile, highly toxic, and poor stability
However, it does not increase the activity of the catalyst

Method used

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  • Vanadium catalyst and preparation method of vanadium catalyst as well as preparation method of ethylene-propylene copolymer
  • Vanadium catalyst and preparation method of vanadium catalyst as well as preparation method of ethylene-propylene copolymer
  • Vanadium catalyst and preparation method of vanadium catalyst as well as preparation method of ethylene-propylene copolymer

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preparation example Construction

[0037] The present invention also provides a preparation method of vanadium catalyst, comprising:

[0038] a) Provide the general formula as VOCl 3 Vanadium complexes of xR'OH; wherein x is 1-3.5; R'OH is a straight chain or branched fatty alcohol with 5-10 carbon atoms;

[0039] b) Mix the vanadium complex provided in step a) with the modifier in the first organic solvent, and undergo a substitution reaction to obtain the general formula VO(RSO 3 ) a vanadium-based catalyst of mCln x R'OH; m+n=3, wherein m is 1, 2 or 3, and n is 0, 1 or 2;

[0040] Wherein the modifying agent is sulfonic acid and its derivatives; R is C1~C20 linear or branched alkyl, aryl, aralkyl or halogenated alkyl, halogenated aryl, halogenated aralkyl.

[0041] To prepare the vanadium catalyst of the present invention, at first the general formula will be VOCl 3 The vanadium complex of xR'OH is prepared according to the present invention, preferably according to the preparation method provided by the ...

Embodiment 1

[0061] The raw material is: a complex with vanadium as the central atom and fatty alcohol as the ligand, and its composition is VOCl3 xROH, where R is an alkyl group, and x is 1, 2 or 3. The specific preparation method of the raw material is as described in the patent CN 101108885A (publication number);

[0062] The sulfonic acid reagent is: trifluoromethanesulfonic acid;

[0063] The amount of sulfonic acid added: calculated according to the amount of vanadium added, the molar ratio of sulfonic acid and vanadium added is Q 钒 / Q 磺酸 =1~3;

[0064] The diluent is: saturated alkanes with 6-8 carbon atoms;

[0065] Reactant mixing time: 2-30 minutes;

[0066] Temperature conditions: -20°C—room temperature;

[0067] The reactor is: ampoule;

[0068] Preparation steps: Add VOCl3 xROH saturated alkane solution into the reactor according to the calculated amount, add sulfonic acid solution, mix thoroughly for 10-20 minutes by shaking or stirring, take samples and analyze an...

Embodiment 2

[0070] Preparation of other organic sulfonate vanadium compounds and preparation of complexes:

[0071] The preparation steps are as follows: under the conditions of heating at 60°C and stirring at 300 rpm, the organic sulfonic acid solution is added to the vanadium compound hexane solution with fatty alcohol as a ligand, wherein the organic sulfonic acid and fatty alcohol are ligands The molar ratio of the vanadium compound is 1:1 (or 2:1, 3:1). After 2 hours of reaction, the reaction solution is poured into a separatory funnel, left to separate the phases, the lower aqueous phase is released, and the upper organic phase is retained, that is A vanadium-based catalyst modified with an organic sulfonic acid is obtained.

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Abstract

The invention provides a vanadium catalyst with a general formula of VO(RSO3)mCln.xR'OH, wherein m+n=3, and m is 1, 2 or 3, n is 0, 1 or 2; x is within 1-3.5; RSO3<-> has a structure shown in formula I; R is a C1-C20 linear or branched alkyl, aryl, aralkyl or halogen-substituted alkyl, halogen-substituted aryl, and halogen-substituted aralkyl; R'OH is straight chain aliphatic alcohol or branched chain aliphatic alcohol with carbon atom number of 5-10. The vanadium catalyst provided by the invention has the advantages of high activity and low cost. The invention also provides a preparation method of the catalyst and a preparation method of binary or ternary ethylene-propylene copolymer by using the catalyst. The following formula is the formula I.

Description

technical field [0001] The invention relates to the field of polymer synthesis, in particular to a vanadium-based catalyst, a preparation method thereof, and a preparation method of an ethylene-propylene copolymer. Background technique [0002] With the development of science and technology, polymer materials have been widely used in various fields of social life, among which polymers of short-chain olefins such as ethylene, propylene, butene, and isoprene are most widely used. The binary or ternary ethylene propylene copolymer has played a pivotal role in today's rubber industry because of its good elasticity, corrosion resistance, aging resistance, temperature resistance and water resistance. When preparing binary or ternary ethylene-propylene copolymers with different molecular weights and different configurations, it is necessary to select different catalysts according to the requirements of the product. [0003] At present, the most commonly used catalysts for the prep...

Claims

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Application Information

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IPC IPC(8): C08F210/16C08F210/18C08F4/68
Inventor 那丽华郝秀峰张学全张春雨蔡洪光张贺新代全权毕吉福白晨曦
Owner 中科应化(长春)科技有限公司
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