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Continuous tubular preparation method for long-chain alkyl modified silicone oil

A long-chain alkyl and modified silicon technology, which is applied in the field of preparing modified silicone oil, can solve the problems of low production efficiency and difficult control of batch-to-batch stability, and achieve high production efficiency, easy control of reaction heat, and safe production good sex effect

Inactive Publication Date: 2017-09-05
张燕妮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method belongs to the batch production process, the stability between batches is not easy to control, and the production efficiency is low

Method used

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  • Continuous tubular preparation method for long-chain alkyl modified silicone oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Mix α-dodecene (>98%) and low-hydrogen silicone oil (TH-201, hydrogen content 0.5%, 100cs) according to the mass ratio of 1:1 and add them to the first storage tank 1, and then pass through the second A metering pump 3 enters the mixed material into the static mixer 5 according to the flow rate of 30ml / min; the platinum catalyst (Shin-Etsu ACS-Pt-50) is diluted to 50ppm with ethanol and then added to the second storage tank 2, and then passed through the second The metering pump 4 enters the static mixer 5 at a flow rate of 1 ml / min. The mixed material enters the coil 8 in the oil bath tank 6 from the static mixer 5. The length of the coil is 5m, the inner diameter is 3mm, and the wall thickness is 1mm. The temperature of the oil bath is controlled at 110°C by the mold temperature controller 7. The material enters the third storage tank 9 from the coil reactor 8, and a part of the reactant is transported to the devolatilization kettle 11 through the third metering pump ...

Embodiment 2

[0040] Mix α-dodecene (>98%), styrene (>99%) and high hydrogen-containing silicone oil (Dow Corning MHX-1107, 30cs) according to the mass ratio of 6:1:3 and add them to the first storage tank 1 In, then through the first metering pump 3, the mixed material enters the static mixer 5 according to the flow rate of 200ml / min; the platinum catalyst (Shin-Etsu ACS-Pt-50) is diluted to 50ppm with styrene and then added to the second storage tank 2 , and then enter the static mixer 5 through the second metering pump 4 according to the flow rate of 8ml / min. The mixed material enters the coil 8 in the oil bath tank 6 from the static mixer 5. The length of the coil is 4m, the inner diameter is 5mm, and the wall thickness is 1mm. The temperature of the oil bath is controlled at 120°C by the mold temperature controller 7. The material enters the third storage tank 9 from the coil reactor 8, and a part of the reactant is transported to the devolatilization kettle 11 through the third meteri...

Embodiment 3

[0042] Mix α-octene (>98%), α-methylstyrene (>99%) and high hydrogen-containing silicone oil (Shin-Etsu KF-99, 30cs) according to the mass ratio of 4:1:3 and add them to the first In the storage tank 1, then the mixed material is entered into the static mixer 5 according to the flow rate of 1L / min through the metering pump 3; the platinum catalyst (1% chloroplatinic acid-isopropanol solution) is diluted to 50ppm with styrene and then added to the In the second storage tank 2, then enter the static mixer 5 according to the flow rate of 50ml / min through the second metering pump 4. The mixed material enters the coil 8 in the oil bath tank 6 from the static mixer 5. The length of the coil is 5m, the inner diameter is 8mm, and the wall thickness is 2mm. The temperature of the oil bath is controlled at 130°C by the mold temperature controller 7. The material enters the third storage tank 9 from the coil reactor 8, and a part of the reactant is transported to the devolatilization ket...

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Abstract

The invention discloses a tubular preparation method for continuously producing long-chain alkyl modified silicone oil. The tubular preparation method includes uniformly mixing reactants in a static mixer with one another to obtain materials; feeding the materials into a coil pipe in oil bath at the oil bath temperature of 80-150 DEG C under the control; allowing the materials to flow along the edges of pipelines, simultaneously carrying out hydrosilylation reaction and controlling the reaction degree by the aid of the length of the coil pipe; feeding materials into a buffer kettle and a devolatilization kettle after the reaction is completely carried out, and carrying out devolatilization to obtain the long-chain alkyl modified silicone oil. Compared with kettle type production processes, the tubular preparation method has the advantages that production processes can be simplified, the stability of the long-chain alkyl modified silicone oil which is a product can be greatly improved, and the production cost can be reduced.

Description

technical field [0001] The invention relates to a method for preparing modified silicone oil, in particular to a continuous tubular method for preparing long-chain alkyl modified silicone oil. Background technique [0002] Long-chain alkyl modified silicone oil has excellent lubricity, mold release, hydrophobicity, antifouling and compatibility with polymers, etc. It has a wide range of applications, for example, long-chain alkylphenyl modified silicone oil with excellent heat resistance and lubricity is used in the aluminum alloy die-casting process. [0003] At present, domestic long-chain alkyl modified silicone oils, including long-chain alkylphenyl modified silicone oils, mainly have two production processes: one is to first react α-long-chain olefins with hydrogen-containing rings, and then react with rings Dimethylsiloxane and end-capping agent are subjected to ring-opening polymerization under the action of a catalyst to obtain long-chain alkyl-modified silicone oil...

Claims

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Application Information

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IPC IPC(8): C08F283/12C08F210/14C08F212/08C08F212/12C08F220/44C08F216/14
CPCC08F283/12C08F210/14C08F212/08C08F212/12C08F220/44C08F216/1416
Inventor 张燕妮
Owner 张燕妮
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