CN107987100A - A kind of synthetic method of environment-friendly type silane crosslinker - Google Patents

A kind of synthetic method of environment-friendly type silane crosslinker Download PDF

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Publication number
CN107987100A
CN107987100A CN201711423973.6A CN201711423973A CN107987100A CN 107987100 A CN107987100 A CN 107987100A CN 201711423973 A CN201711423973 A CN 201711423973A CN 107987100 A CN107987100 A CN 107987100A
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China
Prior art keywords
ethyl lactate
reaction
triethylamine
methyl
petroleum ether
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Pending
Application number
CN201711423973.6A
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Chinese (zh)
Inventor
王欣
陈其
张宇
阮少阳
陈圣云
甘俊
甘书官
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Jingzhou Jianghan Fine Chemical Co Ltd
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Jingzhou Jianghan Fine Chemical Co Ltd
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Priority to CN201711423973.6A priority Critical patent/CN107987100A/en
Publication of CN107987100A publication Critical patent/CN107987100A/en
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/18Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • C07F7/1804Compounds having Si-O-C linkages
    • C07F7/1872Preparation; Treatments not provided for in C07F7/20
    • C07F7/188Preparation; Treatments not provided for in C07F7/20 by reactions involving the formation of Si-O linkages
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J183/00Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
    • C09J183/04Polysiloxanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/54Silicon-containing compounds
    • C08K5/541Silicon-containing compounds containing oxygen
    • C08K5/5415Silicon-containing compounds containing oxygen containing at least one Si—O bond
    • C08K5/5419Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Abstract

The present invention relates to a kind of synthetic method of environment-friendly type silane crosslinker, belongs to silane crosslinker synthesis field.For the present invention using methyl trichlorosilane, ethyl lactate and triethylamine as raw material, petroleum ether is solvent, reaction generation three ethyl lactate silane of methyl(MTELS).It is filtered under diminished pressure after reaction, removes triethylamine hydrochloride, is then distilled to recover solvent petroleum ether, obtains three ethyl lactate silane crosslinker of product methyl.The present invention has the advantages that easy to operate, reaction conversion ratio is high, and yield is high, stay in grade, and product is safe to use environmentally friendly, and the non-corrosive hydrogen chloride gas of whole process, environmentally safe.

Description

A kind of synthetic method of environment-friendly type silane crosslinker
Technical field
The present invention relates to a kind of synthetic method of environment-friendly type silane crosslinker, belongs to silane crosslinker synthesis field.
Background technology
Organosilicon sealant mainly has three kinds of de-oxime type, dealcoholized type and de- acetic acid type at present, its sulfidation discharges respectively Go out oximes, alcohols and acetic acid small-molecule substance.Wherein, oximes small molecule has been considered having potential carcinogenesis, alcohol to human body Micromolecular particularly methanol, eyesight, respiratory system to human body etc. also have negative effect, the penetrating odor of acetic acid small molecule Also do not liked for major part construction personnel.Fluid sealant equally also will as one of material indispensable in electronic enterprises Adapt to the higher and higher technical requirements that industrial chain Downstream Market is proposed.Organosilicon sealant because its excellent high-low temperature resistant, Ageing-resistant, dielectric properties and low-corrosiveness etc., are applied very generally in electronic enterprises, such as pcb board coating, electronics member device Part adhering and sealing etc..In use, volatile matter is larger for de-oxime type, and is corrosive to many materials such as copper sheet, for ring Requirement in terms of guarantor, the organosilicon sealant suitable for electronic enterprises are mainly dealcoholized type.With high-precision electronics industry Development, common dealcoholized type organosilicon sealant can not meet the market demand, and exploitation novel organosilicon fluid sealant is extremely necessary.
Ethyl lactate has special Rum, fruit and cream fragrance, is a kind of important fine chemical material.Food Industry is widely used in spices, spices synergist and Wine additive, can be used to allocate food flavor, wine essence and foodstuff flavouring Fumet, it is also possible to modulate soft drink and inebriant.Simultaneously because ethyl lactate has, nontoxic, dissolubility is good, is not easy to wave Send out, have the features such as fruity smell, and there is biodegradable, therefore ethyl lactate is great Development volue and application prospect again " green solvent ".Demulsification acetoacetic ester type fluid sealant is a kind of organosilicon sealant using novel crosslinker, it uses lactic acid Ethyl ester type crosslinking agent, discharges nontoxic ethyl lactate small molecule in reaction process, harmless, to copper non-corrosiveness, and Fluid sealant volatile matter is low, superior electrical property, is very suitable for the more demanding high-precision electronics industry of glue.
The content of the invention
It is an object of the present invention to provide a kind of technique is simple, product with stable quality, high income, and to environment without any Pollution, the synthetic method of the environment-friendly type silane crosslinker of safety and environmental protection.
The technical scheme is that:
A kind of synthetic method of environment-friendly type silane crosslinker, it is characterised in that it includes the following steps:
1), a certain amount of ethyl lactate, three second are put into the reactor with mechanical agitation, constant pressure funnel and condenser Amine, solvent petroleum ether(60-90 DEG C of boiling range).
2), weigh a certain amount of methyl trichlorosilane and be added in constant pressure funnel, be every point in mechanical agitation speed Under conditions of 100 ~ 300 turns of clock, controlling reaction temperature starts dropwise reaction, during the dropwise addition of methyl trichlorosilane at 30 ~ 100 DEG C Between for 3 ~ 6 it is small when, react generation hydrogen chloride gas absorbed by triethylamine after form triethylamine hydrochloride.
3), after reaction, filtered by water vacuum pump pressure, remove the triethylamine hydrochloride in reaction system, with few The petroleum ether filter cake of amount.
4), mother liquor pass through air-distillation and recycle petroleum ether solvent, the then a small amount of excessive ethyl lactate of vacuum distillation recycling And a small amount of impurity component is removed, the product of colourless transparent liquid is obtained after filtering.
5), triethylamine hydrochloride neutralized by sodium hydrate aqueous solution, be dry, recycling.Whole process safety, ring Protect, superior product quality, do not produce a large amount of corrosive hydrogen chloride gas and produce.
Its chemical equation is as follows:
The molar ratio of the methyl trichlorosilane, triethylamine and ethyl lactate is 1:3:3.3.
The solvent petroleum ether quality is three kinds of total matter of reaction raw materials such as methyl trichlorosilane, triethylamine and ethyl lactate The 50 ~ 100% of amount.
The reaction principle of the present invention:
The present invention is to put into methyl trichlorosilane, triethylamine, ethyl lactate and petroleum ether solvent in reactor by a certain percentage Reacted, the hydrochloride of reaction generation three ethyl lactate base silane of methyl and triethylamine, wherein petroleum ether solvent was reacting Effect in journey is to reduce the viscosity of mixture.
After reaction, then system is recycled by air-distillation again first through being filtered under diminished pressure removing triethylamine hydrochloride Petroleum ether solvent, vacuum distillation obtain product.For triethylamine hydrochloride by neutralizing, after drying process, obtained triethylamine can be with Absorbent as hydrogen chloride gas again.Whole building-up process, molar yield more than 94.0%, product content reaches 94.0 ~ 96.0%, effective content reaches(The sum of main content and effective high-boiling components component content)To 98.0% or so, chloride ion content is less than 5ppm, and material can be recycled fully, non-corrosive hydrogen chloride gas produces, process safety, environmental protection.
The advantages of present invention is compared with existing product is as follows:
(1)The present invention is reacted by methyl trichlorosilane and ethyl lactate first using under the conditions of triethylamine and solvent petroleum ether Three ethyl lactate base silane crosslinking agent of synthesizing methyl, product are mainly used in organosilicon neutrality fluid sealant, to copper non-corrosiveness, And fluid sealant volatile matter is low, superior electrical property, is very suitable for the more demanding high-precision electronics industry of glue.
(2)During ketoxime type crosslinking agent use, the diacetylmonoxime chemical substance of release is a kind of potential carcinogenic substance, by European Union disables in many occasions, limits use scope and potentiality.Ketoxime type crosslinking agent is substituted using ethyl lactate type crosslinking agent, Nontoxic ethyl lactate small molecule is discharged in reaction process, it is harmless.
(3)Hydrogen chloride absorbs to form triethylamine hydrochloride by triethylamine in the reaction process of the present invention, and precipitation is easy to point From not producing a large amount of corrosive hydrogen chloride gas, technique is simple, safety and environmental protection.
Three ethyl lactate base silane of methyl provided by the invention, has good cross-linking effect, the demulsification acid second worked it out Ester type organosilicon sealant has excellent insulation performance, and fluid sealant volatile matter is low, is very suitable for copper metal non-corrosiveness High high-precision electronics industry is required with glue, existing similar-type products methyl tributanoximo silane can be substituted completely.
Embodiment
Embodiment 1:
Ethyl lactate is put into tetra- mouthfuls of reaction flasks of 3000ml with mechanical agitation, constant pressure funnel and condenser 779.5g and triethylamine 607.1g, adds solvent petroleum ether 1179.9g, methyl trichlorine is added in most backward constant pressure funnel Silane 299g.Methyl trichlorosilane is added dropwise under 300 turns per minute of mechanical agitation.Temperature control is at 30 DEG C, time for adding control System is when 6 is small.After dripping, the reaction was continued 30 minutes, reaction generation three ethyl lactate base silane of methyl and triethylamine hydrochloride Mixture.It is filtered under diminished pressure after reaction, except the triethylamine hydrochloride of dereaction generation, mother liquor air-distillation recycling design oil The ethyl lactate raw material of ether, the then a small amount of excess of vacuum distillation recycling.Obtain the three ethyl lactate base silane of methyl of water white transparency Finished product 770g, product yield reach 95.6%, and main content 95.1%, effective content reaches 98.0%, chloride ion content 2ppm.
Embodiment 2:
Ethyl lactate is put into tetra- mouthfuls of reaction flasks of 3000ml with mechanical agitation, constant pressure funnel and condenser 779.5g and triethylamine 607.1g, is adding solvent petroleum ether 1011.4g, methyl trichlorine is added in most backward constant pressure funnel Silane 299g.Methyl trichlorosilane is added dropwise under 300 turns per minute of mechanical agitation.Temperature control is at 50 DEG C, time for adding control System is when 5 is small.After dripping, the reaction was continued 30 minutes, reaction generation three ethyl lactate base silane of methyl and triethylamine hydrochloride Mixture.It is filtered under diminished pressure after reaction, except the triethylamine hydrochloride of dereaction generation, mother liquor air-distillation recycling design oil The ethyl lactate raw material of ether, the then a small amount of excess of vacuum distillation recycling.Finally obtain the three ethyl lactate base of methyl of water white transparency Silane finished product 764.8g, product yield reach 94.6%, and main content 94.3%, effective content reaches 97.6%, chloride ion content 3ppm。
Embodiment 3:
Ethyl lactate is put into tetra- mouthfuls of reaction flasks of 3000ml with mechanical agitation, constant pressure funnel and condenser 779.5g and triethylamine 607.1g, is adding solvent petroleum ether 842.8g, methyl trichlorine is added in most backward constant pressure funnel Silane 299g.Methyl trichlorosilane is added dropwise under 300 turns per minute of mechanical agitation.Temperature control is at 70 DEG C, time for adding control System is when 4 is small.After dripping, the reaction was continued 30 minutes, reaction generation three ethyl lactate base silane of methyl and triethylamine hydrochloride Mixture.It is filtered under diminished pressure after reaction, except the triethylamine hydrochloride of dereaction generation, mother liquor air-distillation recycling design oil The ethyl lactate raw material of ether, the then a small amount of excess of vacuum distillation recycling.Finally obtain the three ethyl lactate base of methyl of water white transparency Silane finished product 760.5g, product yield reach 94.7%, and main content 94.4%, effective content reaches 98.3%, chloride ion content 2ppm。

Claims (3)

1. a kind of synthetic method of environment-friendly type silane crosslinker, it is characterised in that it includes the following steps:
1), a certain amount of ethyl lactate, three second are put into the reactor with mechanical agitation, constant pressure funnel and condenser Amine, solvent petroleum ether(60-90 DEG C of boiling range);
2), weigh a certain amount of methyl trichlorosilane and be added in constant pressure funnel, be per minute 100 in mechanical agitation speed Under conditions of ~ 300 turns, controlling reaction temperature starts dropwise reaction at 30 ~ 100 DEG C, the time for adding of methyl trichlorosilane for 3 ~ 6 it is small when, react generation hydrogen chloride gas absorbed by triethylamine after form triethylamine hydrochloride;
3), after reaction, filtered by water vacuum pump pressure, the triethylamine hydrochloride in reaction system removed, with a small amount of Petroleum ether filter cake;
4), mother liquor petroleum ether solvent is recycled by air-distillation, then a small amount of excessive ethyl lactate of vacuum distillation recycling and remove A small amount of impurity component is removed, the product of colourless transparent liquid is obtained after filtering;
5), triethylamine hydrochloride neutralized by sodium hydrate aqueous solution, be dry, recycling;
Whole process safety, environmental protection, superior product quality, does not produce a large amount of corrosive hydrogen chloride gas and produces.
A kind of 2. synthetic method of environment-friendly type silane crosslinker according to claim 1, it is characterised in that the methyl The molar ratio of trichlorosilane, triethylamine and ethyl lactate is 1:3:3.3.
A kind of 3. synthetic method of environment-friendly type silane crosslinker according to claim 1, it is characterised in that the solvent Petroleum ether quality is methyl trichlorosilane, the 50 ~ 100% of three kinds of reaction raw materials gross masses of triethylamine and ethyl lactate.
CN201711423973.6A 2017-12-25 2017-12-25 A kind of synthetic method of environment-friendly type silane crosslinker Pending CN107987100A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112375096A (en) * 2020-11-24 2021-02-19 江西晨光新材料股份有限公司 Synthesis method of amidosilane
CN113583037A (en) * 2021-08-27 2021-11-02 湖北新蓝天新材料股份有限公司 Environment-friendly silane coupling agent and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120016072A1 (en) * 2007-08-31 2012-01-19 NITRO-CHEME ASCHAU GmbH hardener for silicone rubber materials
CN106749381A (en) * 2016-11-17 2017-05-31 湖北新蓝天新材料股份有限公司 A kind of preparation method of three lactic acid alkyl esters silane

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120016072A1 (en) * 2007-08-31 2012-01-19 NITRO-CHEME ASCHAU GmbH hardener for silicone rubber materials
CN106749381A (en) * 2016-11-17 2017-05-31 湖北新蓝天新材料股份有限公司 A kind of preparation method of three lactic acid alkyl esters silane

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112375096A (en) * 2020-11-24 2021-02-19 江西晨光新材料股份有限公司 Synthesis method of amidosilane
CN112375096B (en) * 2020-11-24 2023-05-02 江西晨光新材料股份有限公司 Synthesis method of amido silane
CN113583037A (en) * 2021-08-27 2021-11-02 湖北新蓝天新材料股份有限公司 Environment-friendly silane coupling agent and preparation method thereof
CN113583037B (en) * 2021-08-27 2024-05-10 湖北新蓝天新材料股份有限公司 Environment-friendly silane coupling agent and preparation method thereof

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