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Preparation method of epoxided high active polyisobutene

A polyisobutylene, high epoxidation technology, applied in the field of preparation of epoxidation highly active polyisobutylene, can solve the problems of low molecular polarity, high viscosity, poor oil resistance and wet skid resistance, etc., to solve the problem of poor molecular polarity Effect

Inactive Publication Date: 2011-10-05
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of high viscosity, low molecular polarity, and poor air tightness, oil resistance and wet skid resistance of modified materials in HRPIB, and performs epoxidation modification on HRPIB. The organic solvent is used as the reaction medium, HRPIB and the oxidizing agent are used as the reaction raw materials, and the oxidizing agent is peroxyacid, and the epoxidation reaction is carried out

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: Weigh 10.0g HRPIB, and dissolve 1.6g of MCPBA in 60ml of toluene, then pour it into a three-necked glass flask with a stirring and temperature control device, keep the constant temperature water bath at 50°C, and carry out the epoxidation reaction for 2 hours. The reaction solution is all poured into a separatory funnel, left to stand for 25min, after layering, wash with a concentration of 3wt.% sodium sulfite solution, remove unreacted m-chloroperoxybenzoic acid, and then use a concentration of 3wt.% hydrogen carbonate Neutralize the sodium solution, then wash the upper organic phase with distilled water to about pH = 7, distill under reduced pressure for 20 minutes, remove toluene, a small amount of water and acid in the organic phase, and finally obtain a colorless transparent viscous epoxidized high Reactive polyisobutylene.

Embodiment 2

[0016] Embodiment 2: the epoxidation reaction temperature is 30 DEG C, all the other are the same as Example 1.

Embodiment 3

[0017] Embodiment 3: the epoxidation reaction temperature is 40 DEG C, all the other are the same as Example 1.

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PUM

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Abstract

The invention relates to a preparation method of epoxidation high active polyisobutene. Peroxy acid is adopted as oxidant, epoxidation is carried out on high active polyisobutene, organic solvent is taken as reaction medium, and standing and layering, removal of unreacted oxidant, washing and reduced pressure distillation are carried out to obtain the product. The viscosity of high active polyisobutene with molecular weight of 1300 is 4.82x10<4>MPa.s, the viscosity of the prepared epoxided high active polyisobutene is 1.20-1.50x10<4>MPa.s, the viscosity is obviously reduced, and the problem of high viscosity is solved; epoxide group is existed and polar group is induced on nonpolar molecule to enhance molecular polarity, thus solving the problem of poor molecular polarity. The epoxided polyisobutene product has the characteristics of low viscosity, high polarity, high reactivity and no specific smell, so the epoxided polyisobutene is widely applicable to the fields of rubber modification, epoxide resin modification, plasticizer, binding agent manufacture and the like.

Description

technical field [0001] The invention relates to a preparation method of epoxidized highly active polyisobutene. Background technique [0002] The polyisobutene whose terminal methylvinylidene group accounts for the majority is called highly reactive polyisobutene (HRPIB for short). Due to its excellent performance, it has been used in the preparation of automobile sealant and insulating glass sealant; it is used in the production of food preservation film, automobile protective film, electronic material protective film and chewing gum; highly active polyisobutylene is widely used in Europe and the United States It has been widely used in the fields of waterproof materials, rubber and resin modification, fuel and lubricating oil additives, and industrial lubricating oil. [0003] Since HRPIB has certain deficiencies, such as high viscosity, low molecular polarity, poor air tightness, oil resistance and wet skid resistance of the modified material, it is necessary to modify H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/10C08F8/08
Inventor 张龙丁立微
Owner CHANGCHUN UNIV OF TECH