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Silane coupling agent containing cyanogen group and preparation method of silane coupling agent

The technology of silane coupling agent and alkenyl siloxane is applied in the field of cyano group-containing silane coupling agent and its preparation. Efficiency improvement, short response time, effect of improving interfacial bond strength

Active Publication Date: 2013-05-29
埃肯有机硅材料(中山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cyano-containing silane coupling agent in the prior art has fewer active groups and shorter molecular chains, and its adhesive performance is still insufficient when combined with various substrates.
In addition, the preparation process of the cyano-containing silane coupling agent in the prior art is difficult to control, the reaction time is long, the production efficiency of the product is low, and the product yield is low

Method used

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  • Silane coupling agent containing cyanogen group and preparation method of silane coupling agent
  • Silane coupling agent containing cyanogen group and preparation method of silane coupling agent
  • Silane coupling agent containing cyanogen group and preparation method of silane coupling agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The cyano-containing silane coupling agent provided in this embodiment is synthesized from the following materials:

[0032] The molecular structural formula of hydrogen-containing oligosiloxane (A) is:

[0033]

[0034] The molar mass of the reaction is 1mol;

[0035] The alkenyl-containing siloxane (B) is vinyltriethoxysilane, and the reaction molar weight is 1mol;

[0036] A class of compound (C) containing cyano and alkenyl is allyl cyanide, and the reaction molar weight is 1mol;

[0037] Platinum catalyst at 20 ppm calculated as platinum atoms.

[0038] Add the above-mentioned alkenyl-containing siloxane (B) component dropwise to the hydrogen-containing oligosiloxane (A) to which an appropriate amount of catalyst has been added to react to synthesize an intermediate product, add pentane as a solvent, and the reaction temperature is 45-55 °C , the reaction time is 2.5 h; then the obtained intermediate product is added dropwise to the cyano- and alkenyl-contai...

Embodiment 2

[0041] The cyano-containing silane coupling agent provided in this embodiment is synthesized from the following materials:

[0042] The molecular structural formula of hydrogen-containing oligosiloxane (A) is:

[0043]

[0044] The molar mass of the reaction is 1 mol;

[0045] A class of compound (C) containing cyano and alkenyl is allyl cyanide, and the reaction molar weight is 2 mol;

[0046] Platinum catalyst at 45 ppm calculated as platinum atoms.

[0047] The above-mentioned hydrogen-containing oligosiloxane (A) is added dropwise to a class of compounds (C) containing cyano and alkenyl groups to which an appropriate amount of catalyst has been added to react and synthesize the target product. The reaction temperature is 80-90 ° C, and the reaction The time is 30 minutes. Synthesize the target product:

[0048]

Embodiment 3

[0050] The cyano-containing silane coupling agent provided in this embodiment is synthesized from the following materials:

[0051] The molecular structural formula of hydrogen-containing oligosiloxane (A) is:

[0052]

[0053] The molar mass of the reaction is 1mol;

[0054] The alkenyl-containing siloxane (B) is methacryloxypropyltrimethoxysilane, and the reaction molar weight is 1mol;

[0055] A class of compound (C) containing cyano and alkenyl is cyclohexyl cyanoacrylate, and the reaction molar weight is 1mol;

[0056] Platinum catalyst at 10 ppm calculated as platinum atoms.

[0057] Add the above-mentioned alkenyl-containing siloxane (B) component dropwise to the hydrogen-containing oligosiloxane (A) to which an appropriate amount of catalyst has been added to react to synthesize an intermediate product, add n-hexane as a solvent, and the reaction temperature is 65-75 °C , the reaction time is 1 h; then the obtained intermediate product is added dropwise to a class ...

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Abstract

The invention relates to the field of silane coupling agents and particularly discloses a silane coupling agent containing a cyanogen group and a preparation method of the silane coupling agent. The silane coupling agent containing the cyanogen group is synthesized from oligosiloxane (A) containing a hydrogen group and a compound (C) containing a cyanogen group and an allyl group through hydrosilylation, or synthesized from oligosiloxane (A) containing the hydrogen group, siloxane (B) containing an allyl group, and the compound (C) containing the cyanogen group and the allyl group through hydrosilylation. The silane coupling agent containing the cyanogen group is capable of improving the bonding strength of silica gel to various base materials; and in additional, the preparation process is easy to control, the production efficiency is high and the yield of products is high.

Description

technical field [0001] The invention relates to a coupling agent, in particular to a cyano-containing silane coupling agent and a preparation method thereof. Background technique [0002] Silane coupling agent is a kind of low-molecular-weight organosilicon compound with special structure. It also has reactive groups that can combine with inorganic materials and organic materials. It can build molecular bridges between interfaces and couple two materials with different properties. Together, improve the bonding strength of the interface layer. Therefore, the mechanical properties and hydrolysis resistance of composite materials can be improved by pretreating fillers and glass fibers with silane coupling agents or directly doping silane coupling agents into resins, fillers, and fibers, or directly silane coupling The agent is added to the adhesive or used as a primer to improve the bonding strength of the adhesive to the substrate. [0003] Among the various functional group...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C07F7/10C08G77/388C08L83/04C08K5/5475C08K5/5455
Inventor 曹坚林
Owner 埃肯有机硅材料(中山)有限公司
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