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Preparation method of epoxy silane coupling agent oligomer

An epoxy silane coupling agent and oligomer technology, applied in the polymer field, can solve the problems of lower-than-expected modification effect, large equivalent amount of small-molecule coupling agent, and coupling agent that cannot meet low surface energy materials. , to achieve the effect of increasing water and oil repellency, toughening, and promoting stability

Pending Publication Date: 2021-07-09
GBXF SILICONES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a preparation method of epoxy silane coupling agent oligomer, to solve the traditional coupling agent can not meet the needs of the development of low surface energy materials; The modification effect is lower than expected; to solve the problem of the decrease of the hydrophobicity of the macromolecular coupling agent

Method used

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  • Preparation method of epoxy silane coupling agent oligomer
  • Preparation method of epoxy silane coupling agent oligomer
  • Preparation method of epoxy silane coupling agent oligomer

Examples

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Effect test

Embodiment 1

[0032] Described dendritic silicone is made through the following steps:

[0033] Step A: [3-(trimethoxysilyl) propyl] succinic anhydride and trihydroxymethylaminomethane are added to a four-necked flask, then ethanol is added to dissolve it completely, and then the four-necked flask is placed in an oil bath Heated to 70°C in a medium temperature, and refluxed for 10h, then lowered to room temperature, transferred the solution to a container, placed in an oven and dried under vacuum at 35°C to obtain intermediate product 1, in which [3-(trimethoxysilyl) The consumption of propyl] succinic anhydride, tris, ethanol is 0.1mol:0.1mol:150mL;

[0034] Step B: Add the intermediate product 1 and 1,2-octanediol obtained in step A into a four-necked flask, mix well, slowly add concentrated sulfuric acid, and heat the temperature of the reaction system to 80 ° C, under nitrogen protection After stirring and reacting for 3 hours, intermediate product 2 was finally obtained, wherein the m...

Embodiment 2

[0037] Dendritic silicones are made through the following steps:

[0038] Step A: [3-(trimethoxysilyl) propyl] succinic anhydride and trihydroxymethylaminomethane are added to a four-necked flask, then ethanol is added to dissolve it completely, and then the four-necked flask is placed in an oil bath Heated to 70°C in a medium temperature, and refluxed for 10h, then lowered to room temperature, transferred the solution to a container, placed in an oven and dried under vacuum at 35°C to obtain intermediate product 1, in which [3-(trimethoxysilyl) The consumption of propyl] succinic anhydride, tris, ethanol is 0.12mol:0.1mol:200mL;

[0039]Step B: Add the intermediate product 1 and 1,2-octanediol obtained in step A into a four-necked flask, mix well, slowly add concentrated sulfuric acid, and heat the temperature of the reaction system to 80 ° C, under nitrogen protection After reacting under stirring for 3 hours, the intermediate product 2 was finally obtained, wherein the mas...

Embodiment 3

[0042] Dendritic silicones are made through the following steps:

[0043] Step A: [3-(trimethoxysilyl) propyl] succinic anhydride and trihydroxymethylaminomethane are added to a four-necked flask, then ethanol is added to dissolve it completely, and then the four-necked flask is placed in an oil bath Heated to 70°C in a medium temperature, and refluxed for 10h, then lowered to room temperature, transferred the solution to a container, placed in an oven and dried under vacuum at 35°C to obtain intermediate product 1, in which [3-(trimethoxysilyl) The consumption of propyl] succinic anhydride, tris, ethanol is 0.14mol:0.1mol:250mL;

[0044] Step B: Add the intermediate product 1 and 1,2-octanediol obtained in step A into a four-necked flask, mix well, slowly add concentrated sulfuric acid, and heat the temperature of the reaction system to 80 ° C, under nitrogen protection After reacting under stirring for 3 hours, the intermediate product 2 was finally obtained, wherein the ma...

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Abstract

The invention discloses a preparation method of an epoxy silane coupling agent oligomer, which comprises the following steps of respectively dissolving tree-shaped organic silicon and a fluorine monomer by using an organic solvent, adding a catalyst into a solution containing the tree-shaped organic silicon to obtain a mixed solution, then dropwise adding the solution containing the fluorine monomer into the obtained mixed solution within 40-60 min, and after the dropwise addition is completed, continuously carrying out heat preservation reaction for 1-2 hours, adding an epoxy silane coupling agent, stirring at a constant speed, and reacting for 2-3 hours to obtain the oligomer. Organic silicon with a tree-shaped skeleton is used as a substrate, and double bonds in the tree-shaped matter, double bonds in the fluorine-containing monomer and epoxy groups in the epoxy silane coupling agent are subjected to polymerization and grafting reaction to form a hyperbranched oligomer. The hyperbranched oligomer has a special cavity structure, so that inorganic particles can be easily wrapped, the dispersion of the inorganic particles in organic matters is more facilitated, and the dispersion stability of the inorganic particles is promoted.

Description

technical field [0001] The invention belongs to the technical field of polymers, and in particular relates to a preparation method of an epoxy silane coupling agent oligomer. Background technique [0002] Epoxy silane coupling agent is a class of substances with epoxy groups and other functional groups of different properties. The epoxy functional groups in their molecules can react with organic molecules, and other functional groups of different properties can react with the surface of inorganic substances to form solid Adhesion, this part of the functional group can be methoxy, ethoxy, acyloxy, aryloxy, tert-butyl peroxy, chlorine, fluorine, etc., which have been widely used in thermosetting resin composite materials, thermoplastic resin composite materials , inorganic fillers, coatings, adhesives, sealants and other fields. [0003] However, with the development of science and technology, polymer materials emerge in an endless stream, and some low surface energy material...

Claims

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Application Information

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IPC IPC(8): C07F7/18
CPCC07F7/1804C07F7/1892
Inventor 孙佳丽邱小魁汤伟强李泽生杨琴
Owner GBXF SILICONES CO LTD
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