CN108203444A - A kind of synthesis preparation method of urea propyl-triethoxysilicane-methanol solution - Google Patents

A kind of synthesis preparation method of urea propyl-triethoxysilicane-methanol solution Download PDF

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Publication number
CN108203444A
CN108203444A CN201611188350.0A CN201611188350A CN108203444A CN 108203444 A CN108203444 A CN 108203444A CN 201611188350 A CN201611188350 A CN 201611188350A CN 108203444 A CN108203444 A CN 108203444A
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Prior art keywords
urea
triethoxysilicane
reaction
urea propyl
propyl
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不公告发明人
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Qingdao Xiangzhi Electronic Technology Co Ltd
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Qingdao Xiangzhi Electronic Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01CAMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00Ammonia; Compounds thereof
    • C01C1/16Halides of ammonium
    • C01C1/164Ammonium chloride
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05CNITROGENOUS FERTILISERS
    • C05C3/00Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
    • 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
    • C07F7/1892Preparation; Treatments not provided for in C07F7/20 by reactions not provided for in C07F7/1876 - C07F7/1888

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The present invention relates to a kind of synthesis preparations of urea propyl-triethoxysilicane methanol solution, belong to organic chemical industry field.The present invention is using urea and aminopropyl triethoxysilane by generation urea propyl-triethoxysilicane and by-product ammonia under certain reaction condition;The by-product ammonia dilute hydrochloric acid generated in reaction process is absorbed into aqueous ammonium chloride solution;Should after the completion of urea propyl-triethoxysilicane be configured to the solution containing methanol 0% 80%.The invention simple production process, not only production cost is low, and product yield is high, and pollution-free, environmental protection.The present invention relates to a kind of synthesis preparations of urea propyl-triethoxysilicane methanol solution, belong to organic chemical industry field.The present invention is using urea and aminopropyl triethoxysilane by generation urea propyl-triethoxysilicane and by-product ammonia under certain reaction condition;The by-product ammonia dilute hydrochloric acid generated in reaction process is absorbed into aqueous ammonium chloride solution;Urea propyl-triethoxysilicane after the completion of reaction is configured to the solution containing methanol 0% 80%.The invention simple production process, not only production cost is low, and product yield is high, and pollution-free, more environmentally friendly.

Description

A kind of synthesis preparation method of urea propyl-triethoxysilicane-methanol solution
Technical field
The present invention relates to a kind of synthesis preparations of urea propyl-triethoxysilicane-methanol solution, belong to organic chemical industry field.
Background technology
As a kind of special organo silane coupling agent, it is mainly used for polyvinyl chloride, gathers urea propyl-triethoxysilicane The adhesion promoters of styrene, polyamide;For epoxy resin, phenolic resin, melamine resin adhesive;It is used In glass fibre as size and surface conditioning agent, it is also used for the binding agent of mineral wool;It is exclusively used in foundry resin, is casting With sand mold and the binding agent of wear-resisting abrasive wheel.Urea propyl-triethoxysilicane is nineteen sixty-eight earliest in United States Patent (USP) US3671562 In put forward, but limited by economic and technique level at that time, the application of urea propyl-triethoxysilicane is also by very big limit System.With the development of industry, the appearance successively of various new materials, organo silane coupling agent are widely applied, urea propyl three Industrialized production has also been done step-by-step in Ethoxysilane.
It is first to use three ethoxy of urethanes and aminopropyl to produce and prepare at present urea propyl-triethoxysilicane method Base silane generates urea propyl-triethoxysilicane and ethyl alcohol in solvent and organotin catalyzed lower reaction, then distills out reaction life Into second alcohol and solvent, obtain urea propyl-triethoxysilicane sterling, the methanol solution of different content finally converted into methanol.Day This patent Unexamined Patent 8-333375-1996 has similar report.
It is very inconvenient when in use because product urea propyl-triethoxysilicane is solid at normal temperatures, so most producer It sells and uses after urea propyl-triethoxysilicane directly is converted into methanol solution, such as Degussa Dynasylan 2201 and Mai Tu A-1160 etc..The synthesis technology is simple, and reaction condition is mild, and product quality and yield are all very high, have industrially used very Long a period of time.But as environmental protection, food security, health etc. are increasingly closed in the developed countries such as USA and EU Note, successively discloses some high attention rate substances that may be had an impact to environment or health etc., wherein there is production urea third The raw material urethanes of ethyl triethoxy silicane alkane so that the production technology cannot increasingly meet environment and the need in market It asks, there are following some deficiencies in the synthetic method:
1. there is micro carbamic acid in the urea propyl-triethoxysilicane product produced after testing using this production technology The residual of ethyl ester, micro urethanes may influence health;
2. the catalyst organotin residual added in when producing urea propyl-triethoxysilicane is in the product, client is using When can influence performance, lead to the variation of the physicochemical properties such as xanthochromia rate, conductivity;
3. the solvent used during the technique productions urea propyl-triethoxysilicane is benzene mostly, first benezene material, such object Matter is strong carcinogen, is had a great impact to health;
4. raw material urethanes price is high, dosage is big, makes production cost height.
Invention content
The present invention is for the above-mentioned production technology problem, and providing one kind has product yield high, and environmental pollution is small, raw It produces the advantages that at low cost, and is suitble to the synthesis preparation method of urea propyl-triethoxysilicane-methanol solution of industrialized production.
A kind of synthesis preparation method of urea propyl-triethoxysilicane-methanol solution, it is characterised in that:It includes following step Suddenly:
1) urea, is subjected to azeotropic distillation dehydration with absolute ethyl alcohol first, makes the urea water content after dehydration Less than 0.03%, the ethyl alcohol water content after distillation is 0.2%, can make other industrial uses;Then by three second of urea and aminopropyl Oxysilane raw material presses 1:Aminopropyl triethoxysilane raw material is first pumped into the reaction kettle with stirring by 3.68 weight ratio, And urea raw material is put into reaction kettle in the case where stirring nitrogen protective condition;
2) after the completion of, urea raw material feeds intake, reaction kettle is warming up to 120 DEG C -130 DEG C in the case where stirring nitrogen protective condition, 125 DEG C of optimal reaction temperature;It is reacted 4 hours under normal pressure;
3), synthesis under normal pressure is after 4 hours, and opening water circulation vavuum pump, the reaction was continued under the vacuum degree of -0.09MPa 4 hours; Tail gas in entire reaction process is absorbed with dilute hydrochloric acid solution, and the aqueous ammonium chloride solution of generation can do agricultural fertilizer use;
4) after, the reaction was continued within 4 hours, kettle temperature is dropped to 45 DEG C -50 DEG C under nitrogen protective condition, obtains three second of urea propyl Oxysilane sterling, then quantitative methanol is pumped into, obtain urea propyl-triethoxysilicane-methanol solution of methanol content 0%-80% Finished product;
Complete three ethoxy of raw material aminopropyl of unreacted in the urea propyl-triethoxysilicane sterling that the synthesis technology is produced Base silane gas chromatographic detection (GC) content is less than 2%, and amine value is detected with acid-base titration is less than 0.2%, uses gel infiltration Chromatography (GPC) analysis product purity is more than 97.5%, and polymer content is less than 0.2%.
The advantageous effect of the present invention compared with prior art is:
1) with raw material urea instead of urethanes when feeding intake, dosage is less, and cost is lower, more environmentally friendly;
2) reaction is not required in addition add solvent and catalyst, reduces production cost;
3) by-product ammonia is absorbed with dilute hydrochloric acid into aqueous ammonium chloride solution, is a kind of raw material of agricultural fertilizer, without exhaust gas Row
Go out, not can cause environmental pollution;
4) methanol solution of arbitrary proportion can be configured to.
Specific embodiment
Embodiment 1:
100 grams of urea and 100 grams of absolute ethyl alcohols are added in equipped with churned mechanically 1000ml three-necked flasks, it will under stirring Kettle temperature is raised to 78-83 DEG C, and whole ethyl alcohol is distilled out under normal pressure, obtains the recycling ethyl alcohol that 99 grams of water content are 0.17%.The second Alcohol can make other industrial uses.The water content of urea is 0.02% in sampling detection flask.To flask under stirring and nitrogen protection 368 grams of aminopropyl triethoxysilanes of interior addition, are raised to 120 DEG C, tail gas is absorbed with diluted hydrochloric acid aqueous solution by reaction temperature.Reaction Water circulation vavuum pump is opened after 4 hours, the reaction was continued 4 hours at 120 DEG C of -0.09MPa vacuum degrees.It after completion of the reaction, will be anti- Kettle nitrogen is answered to cool to 50 DEG C under protecting, sampling detects the aminopropyl triethoxysilane content that unreacted is complete in product and is 1.85% (GC), amine value are 0.19% (acid-base titration), and urea propyl-triethoxysilicane content is 97.7% (GPC), is polymerize Object content is 0.16% (GPC).The product is urea propyl-triethoxysilicane sterling, and methanol content 0% is at room temperature white Waxy solid.
Embodiment 2:
100 grams of urea and 100 grams of absolute ethyl alcohols are added in equipped with churned mechanically 1000ml three-necked flasks, it will under stirring Kettle temperature is raised to 78-83 DEG C, and whole ethyl alcohol is distilled out under normal pressure, obtains the recycling ethyl alcohol that 98 grams of water content are 0.18%.The second Alcohol can make other industrial uses.The water content of urea is 0.017% in sampling detection flask.To flask under stirring and nitrogen protection 368 grams of aminopropyl triethoxysilanes of interior addition, are raised to 130 DEG C, tail gas is absorbed with diluted hydrochloric acid aqueous solution by reaction temperature.Reaction Water circulation vavuum pump is opened after 4 hours, the reaction was continued 4 hours at 130 DEG C of -0.09MPa vacuum degrees.It after completion of the reaction, will be anti- Kettle nitrogen is answered to cool to 45 DEG C under protecting, sampling detects the aminopropyl triethoxysilane content that unreacted is complete in product and is 1.80% (GC), amine value are 0.17% (acid-base titration), and urea propyl-triethoxysilicane content is 97.8% (GPC), is polymerize Object content is 0.15% (GPC).439 grams of absolute methanols are added in thereto, obtain 878 grams of urea propyl-triethoxysilicane-methanol Solution detects its methanol volatile content as 50% (baking).
Embodiment 3:
100 grams of urea and 100 grams of absolute ethyl alcohols are added in equipped with churned mechanically 2000ml three-necked flasks, it will under stirring Kettle temperature is raised to 78-83 DEG C, and whole ethyl alcohol is distilled out under normal pressure, obtains the recycling ethyl alcohol that 98 grams of water content are 0.16%.The second Alcohol can make other industrial uses.The water content of urea is 0.018% in sampling detection flask.To flask under stirring and nitrogen protection 368 grams of aminopropyl triethoxysilanes of interior addition, are raised to 125 DEG C, tail gas is absorbed with diluted hydrochloric acid aqueous solution by reaction temperature.Reaction Water circulation vavuum pump is opened after 4 hours, the reaction was continued 4 hours at 125 DEG C of -0.09MPa vacuum degrees.It after completion of the reaction, will be anti- Kettle nitrogen is answered to cool to 50 DEG C under protecting, sampling detects the aminopropyl triethoxysilane content that unreacted is complete in product and is 1.81% (GC), amine value are 0.16% (acid-base titration), and urea propyl-triethoxysilicane content is 97.8% (GPC), is polymerize Object content adds in 1756 grams of absolute methanols thereto for 0.16% (GPC), obtains 2193 grams of urea propyl-triethoxysilicane-first Alcoholic solution detects its methanol volatile content as 80% (baking).

Claims (3)

1. a kind of synthesis preparation method of urea propyl-triethoxysilicane-methanol solution, which is characterized in that it includes following step Suddenly:
1) urea, is subjected to azeotropic distillation dehydration with absolute ethyl alcohol first, is less than the urea water content after dehydration 0.03%, the ethyl alcohol water content after distillation is 0.2%, can make other industrial uses;Then by urea and aminopropyl-triethoxy Silane raw material presses 1:Aminopropyl triethoxysilane raw material is first pumped into the reaction kettle with stirring by 3.68 weight ratio, and Urea raw material is put into reaction kettle under stirring nitrogen protective condition;
2) after the completion of, urea raw material feeds intake, reaction kettle is heated up in the case where stirring nitrogen protective condition, is reacted 4 hours under normal pressure;
3), synthesis under normal pressure is after 4 hours, and opening water circulation vavuum pump, the reaction was continued under the vacuum degree of -0.09MPa 4 hours;Entirely Tail gas in reaction process is absorbed with dilute hydrochloric acid solution, and the aqueous ammonium chloride solution of generation can do agricultural fertilizer use;
4) after, the reaction was continued within 4 hours, kettle temperature is dropped to 45 DEG C -50 DEG C under nitrogen protective condition, obtains urea propyl triethoxy Silane sterling, then be pumped into quantitative methanol, obtain urea propyl-triethoxysilicane-methanol solution of methanol content 0%-80% into Product.
2. a kind of synthesis preparation method of urea propyl-triethoxysilicane-methanol solution according to claim 1, feature It is, temperature of reaction kettle is 120 DEG C -130 DEG C in step (2).
3. a kind of synthesis preparation method of urea propyl-triethoxysilicane-methanol solution according to claim 1, feature It is, the vacuum degree of (3) step water circulation vavuum pump is -0.09MPa.
CN201611188350.0A 2016-12-20 2016-12-20 A kind of synthesis preparation method of urea propyl-triethoxysilicane-methanol solution Pending CN108203444A (en)

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Application publication date: 20180626