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Mobile phase catalyst for coordination polymerization of diolefin trans-copolymerized rubber and preparation method thereof

A technology of coordination polymerization and catalyst is applied in the field of preparation of diolefin copolymerization catalyst, which can solve the problems of few diolefin copolymerization catalysts and the inability to use flow pump for transmission, etc., and achieve the effect of stable pumping flow

Pending Publication Date: 2021-12-10
SHANDONG HUAJU POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are few reports on the preparation methods of diolefin copolymerization catalysts, and the prepared catalysts are usually in powder form, which cannot be transported by flow pumps

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0064] The invention provides a method for preparing a mobile phase catalyst for the coordination polymerization of diolefin trans-copolymerized rubber, comprising the steps of:

[0065] A) After the magnesium salt is vibrated and ball milled, it is mixed with the titanium solution and continues to be vibrated and milled to obtain a loaded titanium catalyst;

[0066] B) mixing and stirring liquid olefin, solid olefin and aluminum alkyl, and then mixing with supported titanium catalyst, stirring to obtain the product.

[0067] The preparation method of the mobile phase catalyst for the coordination polymerization of diene trans-copolymerized rubber provided by the present invention firstly vibrates the magnesium salt through ball milling.

[0068] The vibration ball milling of the magnesium salt described in the present invention is preferably specifically as follows: replace the ball mill with high-purity nitrogen and protect it in a nitrogen atmosphere, put in magnesium salt;...

Embodiment 1

[0084] 1.1 Raw material

[0085] Magnesium salt 31.6%, titanium solution 10.5%, liquid olefin 52.1%, solid olefin 4.5%, alkyl aluminum 1.3%.

[0086] 1.2 Preparation

[0087] a) Vibration ball milling of magnesium salt: Replace the ball mill with high-purity nitrogen and protect it with nitrogen atmosphere, and then put in magnesium salt; replace it with high-purity nitrogen again, and start the ball mill for vibration ball milling with the internal pressure of 20KPa; time: 2h, temperature: 23 ℃.

[0088] b) Preparation of supported titanium catalyst: after the magnesium salt is vibrated and ball milled by a ball mill, titanium solution is added to continue vibrating ball milling to obtain a supported titanium catalyst; time 6h, temperature: 30-45°C.

[0089] c) Preparation of mobile phase catalyst: put liquid olefin, solid olefin and alkylaluminum into the preparation tank, stirring for 0.5 h; put in the supported titanium catalyst, and continue stirring for 12 h.

[0090]...

Embodiment 2

[0092] 2.1 Raw material

[0093] Magnesium salt 31.6%, titanium solution 10.5%, liquid olefin 52.1%, solid olefin 4.5%, alkyl aluminum 1.3%.

[0094] 2.2 Preparation

[0095] a) Vibration ball milling of magnesium salt: Replace the ball mill with high-purity nitrogen and protect it with nitrogen atmosphere, and then put in magnesium salt; replace it with high-purity nitrogen again, and start the ball mill for vibration ball milling with the internal pressure of 20KPa; time: 2h, temperature: 23 ℃.

[0096] b) Preparation of supported titanium catalyst: after the magnesium salt is vibrated and milled by a ball mill, titanium solution is added to continue vibrating ball milling to obtain a supported titanium catalyst; the time is 22 hours, and the temperature is 30-45°C.

[0097] c) Preparation of mobile phase catalyst: put liquid olefin, solid olefin and alkylaluminum into the preparation tank, stirring for 0.5 h; put in the supported titanium catalyst, and continue stirring f...

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Abstract

The invention provides a mobile phase catalyst for coordination polymerization of diolefintrans-copolymerized rubber. The mobile phase catalyst comprises the following raw materials in parts by mass: 20-80 parts of magnesium salt; 2-15 parts of a titanium solution; 20-45 parts of liquid olefin; 2-10 parts of solid saturated hydrocarbon; and 0.1-20 parts of aluminum alkyl. The effective titanium loading amount of the mobile phase catalyst is greater than 0.5 wt%, the activity of catalyzing a diolefin copolymerization reaction is greater than 3000g.p / g.Ti.h, and the content of a trans-1, 4-structure in a synthesized trans-diolefin copolymerization rubber molecular structure is greater than 90mol%. The catalyst pumping flow of the mobile phase is stable, and the mobile phase catalyst is suitable for large-scale automatic production devices.

Description

technical field [0001] The invention relates to the field of preparation of diolefin copolymerization catalysts, in particular to a mobile phase catalyst for coordination polymerization of diolefin trans-copolymerization rubber and a preparation method thereof. Background technique [0002] With regard to the preparation of olefin copolymerization catalysts, current research at home and abroad mainly focuses on the preparation of monoolefin copolymerization catalysts. Chinese invention patent CN 106674385 A reports a polyolefin catalyst and its preparation method and application. When it is used in a gas-phase fluidized bed reaction, it can well maintain the fluidized state in the reactor, thereby ensuring the stability of the reaction process. However, the catalyst's morphology and molecular bond energy are not enough to support the requirements of diolefin copolymerization, resulting in a very low conversion rate of the product. Chinese invention patent application CN 106...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/649
CPCC08F10/00C08F4/6492
Inventor 陈铁龙李兰阁苏航王日国葛怀涛栾波王耀伟
Owner SHANDONG HUAJU POLYMER MATERIALS CO LTD