CN103833705A - Synthesis process of dodecenyl succinic anhydride - Google Patents
Synthesis process of dodecenyl succinic anhydride Download PDFInfo
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- CN103833705A CN103833705A CN201210481929.1A CN201210481929A CN103833705A CN 103833705 A CN103833705 A CN 103833705A CN 201210481929 A CN201210481929 A CN 201210481929A CN 103833705 A CN103833705 A CN 103833705A
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- China
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- synthesis process
- reactor
- reaction system
- succinic anhydride
- dodecenyl succinic
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/60—Two oxygen atoms, e.g. succinic anhydride
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Epoxy Resins (AREA)
Abstract
The invention discloses a synthesis process of dodecenyl succinic anhydride. The synthesis process comprises the steps: (a) firstly, mixing polyisobutylene and maleic anhydride according to a certain molar ratio, and placing in a reactor; (b) adding a catalyst and an initiator into the reactor, and adjusting the pH value of the reaction system; (c) adjusting the temperature of the reaction system, and stirring to carry out a reaction for a period time at the high temperature; (d) after finishing the reaction, distilling to obtain a product under a certain pressure, cooling for a period of time, and thus obtaining the target product. Dodecenyl succinic anhydride can be successfully synthesized, moreover, the synthesis process is simple, the synthesis efficiency is high, and the synthesis cost is low.
Description
Technical field
The present invention relates to a kind of synthesis technique of dodecenylsuccinic acid acid anhydride.
Background technology
Dodecenylsuccinic acid acid anhydride claims again dodecyl succinic anhydride, is called for short DDSA, molecular weight 266.38.Have two kinds of straight chain type (LDDSA) and branched chain types (BDDSA), LDDSA is long working life as epoxy curing agent, and pungency is little, and condensate performance is better.Light yellow transparent oily viscous liquid, relative density 1.002.180 ~ 182 ℃ of boiling points (0.67kPa).Specific refractory power 1.477.Viscosity (20 ℃) 590mPaS.Owing to containing long aliphatic chain in molecular structure, therefore can contribute good toughness for epoxy resin cured product.Be dissolved in acetone, toluene, sherwood oil, water insoluble.Low toxicity, LD50 3200mg/kg.Outward appearance: light yellow transparent oily liquid; Iodine number: 0 ~ 90mg I2/100g; Acid number: 250～340mg KOH/g; Moisture≤0.05%.
Dodecenylsuccinic acid acid anhydride is commonly used for the toughness solidifying agent of epoxy resin adhesive, with reference to 120 ~ 150 parts of consumptions, easily mixes with epoxy resin, reaches 3～4d working life.100 ℃ of conditions of cure/2h+150 ℃/2h or 85 ℃/2h+150 ℃/20h.Cured article has certain toughness, 66～78 ℃ of heat-drawn wires.Due to heat-resisting poor with chemical resistance, DDSA can mix with other acid anhydrides use.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of synthesis technique of dodecenylsuccinic acid acid anhydride is provided, this technique can successfully synthesize dodecenylsuccinic acid acid anhydride, and synthesis technique is simple, and combined coefficient is high, and synthetic cost is low.
Object of the present invention is achieved through the following technical solutions: a kind of synthesis technique of dodecenylsuccinic acid acid anhydride, comprises the following steps:
(a) first, polyisobutene mixes and is placed in reactor by certain mol proportion with maleic anhydride;
(b) in reactor, add catalyzer and initiator, regulate pH value of reaction system;
(c) temperature of adjusting reaction system, stirs it is at high temperature reacted for some time;
(d) after reaction finishes, under certain pressure, distill out product, cooling for some time, obtain target product.
In described step (c), stir by electric mixer.
In sum, the invention has the beneficial effects as follows: can successfully synthesize dodecenylsuccinic acid acid anhydride, and synthesis technique is simple, combined coefficient is high, synthetic cost is low.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment:
The synthesis technique of a kind of dodecenylsuccinic acid acid anhydride the present invention relates to, comprises the following steps:
(a) first, polyisobutene mixes and is placed in reactor by certain mol proportion with maleic anhydride;
(b) in reactor, add catalyzer and initiator, regulate pH value of reaction system;
(c) temperature of adjusting reaction system, stirs it is at high temperature reacted for some time;
(d) after reaction finishes, under certain pressure, distill out product, cooling for some time, obtain target product.
In described step (c), stir by electric mixer.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction, every foundation technical spirit of the present invention, and any simple modification, equivalent variations that above embodiment is done, within all falling into protection scope of the present invention.
Claims (2)
1. the synthesis technique of dodecenylsuccinic acid acid anhydride, is characterized in that, comprises the following steps:
(a) first, polyisobutene mixes and is placed in reactor by certain mol proportion with maleic anhydride;
(b) in reactor, add catalyzer and initiator, regulate pH value of reaction system;
(c) temperature of adjusting reaction system, stirs it is at high temperature reacted for some time;
(d) after reaction finishes, under certain pressure, distill out product, cooling for some time, obtain target product.
2. the synthesis technique of dodecenylsuccinic acid acid anhydride according to claim 1, is characterized in that, in described step (c), stirs by electric mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210481929.1A CN103833705A (en) | 2012-11-25 | 2012-11-25 | Synthesis process of dodecenyl succinic anhydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210481929.1A CN103833705A (en) | 2012-11-25 | 2012-11-25 | Synthesis process of dodecenyl succinic anhydride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103833705A true CN103833705A (en) | 2014-06-04 |
Family
ID=50797644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210481929.1A Pending CN103833705A (en) | 2012-11-25 | 2012-11-25 | Synthesis process of dodecenyl succinic anhydride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103833705A (en) |
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2012
- 2012-11-25 CN CN201210481929.1A patent/CN103833705A/en active Pending
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140604 |