CN104557796B - The preparation method of epoxy aliphatic acid methyl ester - Google Patents

The preparation method of epoxy aliphatic acid methyl ester Download PDF

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CN104557796B
CN104557796B CN201510028048.8A CN201510028048A CN104557796B CN 104557796 B CN104557796 B CN 104557796B CN 201510028048 A CN201510028048 A CN 201510028048A CN 104557796 B CN104557796 B CN 104557796B
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methyl ester
acid methyl
parts
epoxy aliphatic
aliphatic acid
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CN104557796A (en
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吴俊荣
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Hunan Tuochuang Polymer New Materials Co ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D303/00Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
    • C07D303/02Compounds containing oxirane rings
    • C07D303/38Compounds containing oxirane rings with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D303/40Compounds containing oxirane rings with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals by ester radicals
    • C07D303/42Acyclic compounds having a chain of seven or more carbon atoms, e.g. epoxidised fats
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D301/00Preparation of oxiranes
    • C07D301/02Synthesis of the oxirane ring
    • C07D301/03Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
    • C07D301/12Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with hydrogen peroxide or inorganic peroxides or peracids

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  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Fats And Perfumes (AREA)

Abstract

The preparation method of a kind of epoxy aliphatic acid methyl ester of disclosure, belongs to chemical products preparing technical field.It includes first being made by pending waste oil waste oil pretreatment fluid, adds concentrated sulphuric acid, agitating heating, drips methanol, and constant temperature stirs, and stratification takes supernatant liquid, obtains crude fatty acid methyl ester, puts in rectifying column, and rectification obtains the fatty acid methyl ester refined;Fatty acid methyl ester is put in reactor, and adds salicylic acid and special catalyst, heat up and add hydrogen peroxide and concentrated sulphuric acid again, stir stratification, take supernatant liquid, obtain thick epoxy aliphatic acid methyl ester;Thick epoxy aliphatic acid methyl ester is carried out rectification, obtains the epoxy aliphatic acid methyl ester refined.The present invention adopts waste oil as primary raw material, thus replacing tradition directly to adopt fatty acid methyl ester as the scheme preparing raw material, waste oil not only can be made to be fully utilized, also can the production cost of significantly finished product epoxy aliphatic acid methyl ester.

Description

The preparation method of epoxy aliphatic acid methyl ester
Technical field
The invention belongs to chemical products preparing technical field, the preparation method particularly relating to a kind of epoxy aliphatic acid methyl ester.
Background technology
Waste oil, refers to all kinds of poor oils existed in life, such as the frying oil etc. of the edible oil reclaimed, Reusability.The appearance of waste oil, not only to environment, can there is likely to be waste oil backflow dining table and causes serious safe diet hidden danger on the one hand on the other hand.In order to eliminate safety and the environmental protection hidden danger that above-mentioned waste oil produces, people attempt converting waste oil to safer, useful product.
Epoxy aliphatic acid methyl ester is light yellow liquid at normal temperatures, is that a kind of nontoxic, tasteless novel environment-friendlyplasticizer plasticizer is held concurrently stabilizer.At present, epoxy aliphatic acid methyl ester is mainly directly prepared from fatty acid methyl ester for raw material, but, owing to the price of fatty acid methyl ester remains high always, cause that the preparation cost of epoxy aliphatic acid methyl ester exists too high defect.
Summary of the invention
The preparation method that the present invention provides a kind of epoxy aliphatic acid methyl ester, waste oil is made epoxy aliphatic acid methyl ester as raw material by method, thus while the existing waste oil of solution exists safety and environmental protection potential problem, the preparation cost of epoxy aliphatic acid methyl ester can be effectively reduced again.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is:
It comprises the following steps:
A, remove the solid matter contained in pending waste oil, it is then heated to 70 DEG C~80 DEG C, and filtered by nanometer overclocking vibration film group, then the polyacrylamide accounting for described waste oil pretreatment clear liquid quality 0.04%~0.5% is added again, stir 10 minutes~15 minutes, being 180 DEG C~200 DEG C in temperature again, pressure is the Water Under solution 4 hours~6 hours of 2.0MPa~2.5MPa, obtains waste oil pretreatment fluid;
B, by step A prepare waste oil pretreatment fluid put in agitator, under stirring condition, it is added to account for the concentrated sulphuric acid of described waste oil pretreatment fluid quality 0.5%~0.8%, stir, heating is to 65 DEG C~75 DEG C, dropping accounts for the methanol of described waste oil pretreatment fluid quality 8%~11%, and constant temperature stirs 8 hours~12 hours, then stratification, take supernatant liquid, obtain crude fatty acid methyl ester;
C, by step B prepare crude fatty acid methyl ester put in rectifying column, be 200 DEG C~220 DEG C in temperature, rectification when pressure is 0MPa~0.001MPa, obtain the fatty acid methyl ester refined;
D, by weight, the refining fatty acid methyl ester 100 parts of step C prepared is put in reactor, and add 46 parts of salicylic acid and 0.5 part of catalyst, stir, be then warming up to 80 DEG C~85 DEG C again, and add 22 parts of hydrogen peroxide and 3 parts of concentrated sulphuric acids, stir 4 hours~6 hours, last stratification, takes supernatant liquid, obtains thick epoxy aliphatic acid methyl ester;Wherein, described catalyst by weight, is prepared by 35 parts~45 parts sodium phosphates, 20 parts~22 parts iron sulfate and 8 parts~12 parts potassium phosphate mixing;
E, by D step prepare thick epoxy aliphatic acid methyl ester carry out rectification, obtain the epoxy aliphatic acid methyl ester refined.
In technique scheme, technical scheme is more specifically: in described D step catalyst, sodium phosphate 35 parts, 22 parts of iron sulfate, potassium phosphate 10 parts.
Further, in described D step catalyst, sodium phosphate 40 parts, 20 parts of iron sulfate, potassium phosphate 12 parts.
Further, in described D step catalyst, sodium phosphate 45 parts, 21 parts of iron sulfate, potassium phosphate 8 parts.
Owing to adopting technique scheme, the present invention obtains providing the benefit that:
1. the present invention adopts waste oil as primary raw material, thus replacing tradition directly to adopt fatty acid methyl ester as preparing the scheme of raw material and by adopting specific catalyst, waste oil not only can be made to be fully utilized, also can the production cost of significantly finished product epoxy aliphatic acid methyl ester.
2. the present invention produces the product epoxy aliphatic acid methyl ester purity height obtained.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described, and protection scope of the present invention is not intended to be limited to following example.
Embodiment 1
The preparation method of this epoxy aliphatic acid methyl ester comprises the following steps:
A, remove the solid matter contained in pending waste oil, it is then heated to 70 DEG C, and filtered by nanometer overclocking vibration film group, then the polyacrylamide accounting for described waste oil pretreatment clear liquid quality 0.04% is added again, stir 15 minutes, being 180 DEG C in temperature again, pressure is the Water Under solution 6 hours of 2.0MPa, obtains waste oil pretreatment fluid;
B, by step A prepare waste oil pretreatment fluid put in agitator, under stirring condition, it is added to account for the concentrated sulphuric acid of described waste oil pretreatment fluid quality 0.5%, stir, heating is to 65 DEG C, dropping accounts for the methanol of described waste oil pretreatment fluid quality 8%, and constant temperature stirs 12 hours, then stratification, take supernatant liquid, obtain crude fatty acid methyl ester;
C, by step B prepare crude fatty acid methyl ester put in rectifying column, be 200 DEG C in temperature, rectification when pressure is 0MPa, obtain the fatty acid methyl ester refined;
D, by weight, the refining fatty acid methyl ester 100 parts of step C prepared is put in reactor, and add 46 parts of salicylic acid and 0.5 part of catalyst, stir, be then warming up to 80 DEG C~85 DEG C again, and add 22 parts of hydrogen peroxide and 3 parts of concentrated sulphuric acids, stir 4 hours~6 hours, last stratification, takes supernatant liquid, obtains thick epoxy aliphatic acid methyl ester;Wherein, described catalyst by weight, is prepared by 35 parts of sodium phosphates, 22 parts of iron sulfate and 10 parts of potassium phosphate mixing;
E, by D step prepare thick epoxy aliphatic acid methyl ester carry out rectification, obtain the epoxy aliphatic acid methyl ester refined.
It is 96.1% that the present embodiment produces the product epoxy aliphatic acid methyl ester purity obtained.
Embodiment 2
The preparation method of this epoxy aliphatic acid methyl ester comprises the following steps:
A, remove the solid matter contained in pending waste oil, it is then heated to 80 DEG C, and filtered by nanometer overclocking vibration film group, then the polyacrylamide accounting for described waste oil pretreatment clear liquid quality 0.5% is added again, stir 10 minutes, being 200 DEG C in temperature again, pressure is the Water Under solution 4 hours of 2.5MPa, obtains waste oil pretreatment fluid;
B, by step A prepare waste oil pretreatment fluid put in agitator, under stirring condition, it is added to account for the concentrated sulphuric acid of described waste oil pretreatment fluid quality 0.8%, stir, heating is to 75 DEG C, dropping accounts for the methanol of described waste oil pretreatment fluid quality 11%, and constant temperature stirs 8 hours, then stratification, take supernatant liquid, obtain crude fatty acid methyl ester;
C, by step B prepare crude fatty acid methyl ester put in rectifying column, be 220 DEG C in temperature, rectification when pressure is 0.001MPa, obtain the fatty acid methyl ester refined;
D, by weight, the refining fatty acid methyl ester 100 parts of step C prepared is put in reactor, and add 46 parts of salicylic acid and 0.5 part of catalyst, stir, be then warming up to 80 DEG C~85 DEG C again, and add 22 parts of hydrogen peroxide and 3 parts of concentrated sulphuric acids, stir 4 hours~6 hours, last stratification, takes supernatant liquid, obtains thick epoxy aliphatic acid methyl ester;Wherein, described catalyst by weight, is prepared by 40 parts of sodium phosphates, 20 parts of iron sulfate and 12 parts of potassium phosphate mixing;
E, by D step prepare thick epoxy aliphatic acid methyl ester carry out rectification, obtain the epoxy aliphatic acid methyl ester refined.
It is 96.5% that the present embodiment produces the product epoxy aliphatic acid methyl ester purity obtained.
Embodiment 3
The preparation method of this epoxy aliphatic acid methyl ester comprises the following steps:
A, remove the solid matter contained in pending waste oil, it is then heated to 75 DEG C, and filtered by nanometer overclocking vibration film group, then the polyacrylamide accounting for described waste oil pretreatment clear liquid quality 0.3% is added again, stir 12 minutes, being 190 DEG C in temperature again, pressure is the Water Under solution 5 hours of 2.2MPa, obtains waste oil pretreatment fluid;
B, by step A prepare waste oil pretreatment fluid put in agitator, under stirring condition, it is added to account for the concentrated sulphuric acid of described waste oil pretreatment fluid quality 0.6%, stir, heating is to 70 DEG C, dropping accounts for the methanol of described waste oil pretreatment fluid quality 9%, and constant temperature stirs 10 hours, then stratification, take supernatant liquid, obtain crude fatty acid methyl ester;
C, by step B prepare crude fatty acid methyl ester put in rectifying column, be 210 DEG C in temperature, rectification when pressure is 0.001MPa, obtain the fatty acid methyl ester refined;
D, by weight, the refining fatty acid methyl ester 100 parts of step C prepared is put in reactor, and add 46 parts of salicylic acid and 0.5 part of catalyst, stir, be then warming up to 80 DEG C~85 DEG C again, and add 22 parts of hydrogen peroxide and 3 parts of concentrated sulphuric acids, stir 4 hours~6 hours, last stratification, takes supernatant liquid, obtains thick epoxy aliphatic acid methyl ester;Wherein, described catalyst by weight, is prepared by 45 parts of sodium phosphates, 21 parts of iron sulfate and 8 parts of potassium phosphate mixing;
E, by D step prepare thick epoxy aliphatic acid methyl ester carry out rectification, obtain the epoxy aliphatic acid methyl ester refined.
It is 95.8% that the present embodiment produces the product epoxy aliphatic acid methyl ester purity obtained.

Claims (4)

1. the preparation method of an epoxy aliphatic acid methyl ester, it is characterised in that comprise the following steps:
A, remove the solid matter contained in pending waste oil, it is then heated to 70 DEG C~80 DEG C, and filtered by nanometer overclocking vibration film group, then the polyacrylamide accounting for gained filtrate quality 0.04%~0.5% is added again, stir 10 minutes~15 minutes, being 180 DEG C~200 DEG C in temperature again, pressure is the Water Under solution 4 hours~6 hours of 2.0MPa~2.5MPa, obtains waste oil pretreatment fluid;
B, by step A prepare waste oil pretreatment fluid put in agitator, under stirring condition, it is added to account for the concentrated sulphuric acid of described waste oil pretreatment fluid quality 0.5%~0.8%, stir, heating is to 65 DEG C~75 DEG C, dropping accounts for the methanol of described waste oil pretreatment fluid quality 8%~11%, and constant temperature stirs 8 hours~12 hours, then stratification, take supernatant liquid, obtain crude fatty acid methyl ester;
C, by step B prepare crude fatty acid methyl ester put in rectifying column, be 200 DEG C~220 DEG C in temperature, rectification when pressure is 0.001MPa, obtain the fatty acid methyl ester refined;
D, by weight, the refining fatty acid methyl ester 100 parts of step C prepared is put in reactor, and add 46 parts of salicylic acid and 0.5 part of catalyst, stir, be then warming up to 80 DEG C~85 DEG C again, and add 22 parts of hydrogen peroxide and 3 parts of concentrated sulphuric acids, stir 4 hours~6 hours, last stratification, takes supernatant liquid, obtains thick epoxy aliphatic acid methyl ester;Wherein, described catalyst by weight, is prepared by 35 parts~45 parts sodium phosphates, 20 parts~22 parts iron sulfate and 8 parts~12 parts potassium phosphate mixing;
E, by D step prepare thick epoxy aliphatic acid methyl ester carry out rectification, obtain the epoxy aliphatic acid methyl ester refined.
2. the preparation method of epoxy aliphatic acid methyl ester according to claim 1, it is characterised in that: in described D step catalyst, sodium phosphate 35 parts, 22 parts of iron sulfate, potassium phosphate 10 parts.
3. the preparation method of epoxy aliphatic acid methyl ester according to claim 1, it is characterised in that: in described D step catalyst, sodium phosphate 40 parts, 20 parts of iron sulfate, potassium phosphate 12 parts.
4. the preparation method of epoxy aliphatic acid methyl ester according to claim 1, it is characterised in that: in described D step catalyst, sodium phosphate 45 parts, 21 parts of iron sulfate, potassium phosphate 8 parts.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101029177A (en) * 2007-02-27 2007-09-05 张伟明 Method for producing epoxy plasticizer dirty oil and vegetable and animal waste oil
CN101070510A (en) * 2007-05-22 2007-11-14 李祥庆 Method for producing epoxy plasticizer using waste grease
CN101372539A (en) * 2008-07-31 2009-02-25 浙江嘉澳化工有限公司 Method for producing environment-friendly type plasticiser using waste oil and oil foot
CN102060812A (en) * 2010-12-28 2011-05-18 江苏高科石化股份有限公司 Method for preparing epoxy fatty acid methyl ester
CN102161938A (en) * 2011-03-25 2011-08-24 河北金谷油脂科技有限公司 Method for producing epoxy fatty acid methyl ester by using illegal cooking oil
CN102344856A (en) * 2010-07-28 2012-02-08 肖连朝 Technological method for preparing epoxy fatty acid methyl ester plasticizer with waste vegetable oil
CN103709125A (en) * 2013-12-31 2014-04-09 成都恒润高新科技有限公司 Method for preparing biological plasticizers-epoxidized fatty acid methyl esters from kitchen waste grease

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101029177A (en) * 2007-02-27 2007-09-05 张伟明 Method for producing epoxy plasticizer dirty oil and vegetable and animal waste oil
CN101070510A (en) * 2007-05-22 2007-11-14 李祥庆 Method for producing epoxy plasticizer using waste grease
CN101372539A (en) * 2008-07-31 2009-02-25 浙江嘉澳化工有限公司 Method for producing environment-friendly type plasticiser using waste oil and oil foot
CN102344856A (en) * 2010-07-28 2012-02-08 肖连朝 Technological method for preparing epoxy fatty acid methyl ester plasticizer with waste vegetable oil
CN102060812A (en) * 2010-12-28 2011-05-18 江苏高科石化股份有限公司 Method for preparing epoxy fatty acid methyl ester
CN102161938A (en) * 2011-03-25 2011-08-24 河北金谷油脂科技有限公司 Method for producing epoxy fatty acid methyl ester by using illegal cooking oil
CN103709125A (en) * 2013-12-31 2014-04-09 成都恒润高新科技有限公司 Method for preparing biological plasticizers-epoxidized fatty acid methyl esters from kitchen waste grease

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
不饱和脂肪酸甲酯环氧化工艺的研究进展;刘敏等;《煤炭与化工》;20130731;第36卷(第3期);第19-23页 *
环氧大豆油的生产技术及其在PVC中的应用;蒋平平等;《塑料助剂》;20060220(第55期);第28-32页 *

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