Epoxidation method of gel-free double bond-contained polymer

A polymer and epoxidation technology, which is applied in the field of epoxidation of gel-free polymers containing double bonds, can solve the problem of affecting the economic benefits of the epoxidation process, slowing down the epoxidation reaction speed, and increasing the amount of hydrogen peroxide And other problems, to achieve high yield, high epoxy value, good solubility
CN101538338AInactive Publication Date: 2009-09-23XIAMEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIAMEN UNIV
Publication Date
2009-09-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an epoxidation method of a gel-free double bond-contained polymer, which relates to an epoxidation method of polymers, in particular to an epoxidation method of a gel-free double bond-contained polymer, which can avoid gel generation in the epoxidation reaction, improve the solubility property of epoxidation products and solve the difficult problem in commercial process of epoxidation products of double bond-contained polymers. The invention provides an improved epoxidation method of a gel-free double bond-contained polymer, which comprises the steps: the polymer is dissolved in an organic solvent to prepare a polymer solution which is then added with quaternary ammonium salt and formic acid to prepare a solution A by stirring; the solution A is added with hydrogen peroxide, then heat-preserved for reaction for at least one hour, and then heated for reaction to obtain reaction products; and after washing, an organic layer is separated and the solvent is removed by pressure reduction, thus obtaining the epoxidised gel-free double bond-contained polymer. By adding one quaternary ammonium salt or the compound of a plurality of quaternary ammonium salts, the method avoids the gelation phenomenon in the epoxidation reaction, thus leading the epoxidation reaction to be smoothly conducted and leading the epoxidation products to have good solubility property.
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Description

technical field

[0001] The invention relates to a method for epoxidation of polymers, in particular to a method that can avoid the occurrence of gel in the epoxidation reaction, improve the solubility of epoxidation products, and solve the problem of industrial production of epoxidation products containing double bonds An important problem in the gel-free epoxidation of double bond-containing polymers. Background technique

[0002] Polymers containing double bonds are an important class of polymers, and they are usually prepared by homopolymerization or copolymerization of conjugated dienes as monomers. Such polymers usually have good elasticity and can be used as elastomers. However, due to the poor polarity of this type of material, its oil resistance, adhesion and air permeability are poor, which limits the application field of polymers containing double bonds. In order to increase the polarity of such polymers, polar groups can be introduced by copolymerization with sp...

Claims

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