The production method of epoxy aliphatic acid methyl ester/epoxy soybean oil
Technical field
The present invention relates to a kind of production method of epoxy aliphatic acid methyl ester/epoxy soybean oil.
Background technology
Epoxy soybean oil is a kind of most popular nontoxic polyvinyl chloride softening agent stablizer of holding concurrently.Have good thermostability and light stability, water tolerance and oil-proofness are also good, can give the good physical strength of goods, weathering resistance and electrical property, and nontoxicity, are the chemical technology auxiliary agents that is used for packaging material for food of international population.The epoxy aliphatic acid methyl ester softening agent not only can replace the DOP softening agent to produce PVC product nontoxic, environmental protection wholly or in part, be used for food product pack, medical article material, toy and water supply line etc., simultaneously also as celluosic resin and elastomeric non-toxic plasticizer and tenderizer, in the processing of goods, adding epoxy aliphatic acid methyl ester can obviously improve the physicals of goods and extend digestion time, with metal(lic)stabilizer and used times such as barium, cadmium, zinc, good synergy is arranged.In addition, because it also has good oilness, consistency and dispersion performance, go back useful as surfactants and application of dispersant in production industries such as epoxy coating and epoxy resin
The most of raw material that adopts of the production process of at present domestic epoxy methyl esters/epoxy soybean oil adds reactor, be heated to drip hydrogen peroxide behind 50 ℃ of left and right, and the concentration of hydrogen peroxide is the raw material of 25~50%, 10 cubes, about 8 hours reaction times, because the reaction times is long, in reaction process side reaction is more, so the product oxirane value is not high, epoxy soybean oil 6.3 left and right, epoxy methyl esters 3.8 left and right, product color is poor partially yellow.
Summary of the invention
The objective of the invention is to solve above-mentioned deficiency, the production method of short, quantity-produced epoxy aliphatic acid methyl ester/epoxy soybean oil of a kind of reaction times is provided.
The technical scheme that realizes the object of the invention is a kind of production method of epoxy aliphatic acid methyl ester/epoxy soybean oil, specifically comprises following processing step: one of get in soybean oil and fatty acid methyl ester (1), formic acid, hydrogen peroxide are preheated to 90 ± 2 ℃; (2) will add through soybean oil, formic acid and the hydrogen peroxide of preheating pipeline reactor internal reaction to reaction to finish.
The production method of above-mentioned epoxy aliphatic acid methyl ester/epoxy soybean oil, the concentration of described hydrogen peroxide are 70%.
The production method of above-mentioned epoxy aliphatic acid methyl ester/epoxy soybean oil, the add-on of described formic acid are 6% of raw material total amount.
The production method of above-mentioned epoxy aliphatic acid methyl ester/epoxy soybean oil, the internal diameter of described pipeline reactor are 25 ~ 50mm.
The production method of above-mentioned epoxy aliphatic acid methyl ester/epoxy soybean oil, step (2) will be for adding the pipeline reactor internal reaction 10 minutes through soybean oil, formic acid and the hydrogen peroxide of preheating.
The production method of above-mentioned epoxy aliphatic acid methyl ester/epoxy soybean oil: described step (1) one of is got in soybean oil and fatty acid methyl ester, formic acid, hydrogen peroxide are preheated to 90 ℃.
The production method of above-mentioned epoxy aliphatic acid methyl ester/epoxy soybean oil, described step (2) for volume pump with one of in soybean oil and fatty acid methyl ester, formic acid, hydrogen peroxide adds in pipeline reactor simultaneously.
The production method of above-mentioned epoxy aliphatic acid methyl ester/epoxy soybean oil, described pipeline reactor periphery has water-cooling jacket.
Reaction principle of the present invention is that hydrogen peroxide and formic acid reaction generate peroxyformic acid, and peroxyformic acid reacts with soybean oil again.
Reaction equation:
HCOOH+H
2O
2→HCOOOH+H
2O
The present invention has positive effect: (1) utilizes pipeline reactor to overcome the technology prejudice that can not adopt the high density hydrogen peroxide in traditional epoxy soybean oil production technique, use 70% high density hydrogen peroxide in production process, reaction times significantly shortens, and output significantly improves; (2) adopt hydrogen peroxide and a high proportion of formic acid of high density, speed of response is very fast, and side reaction is less, and the epoxy soybean oil of producing/epoxy aliphatic acid methyl ester oxirane value significantly improves, the color and luster aspect be improved significantly, its transparency is better.
Embodiment
(embodiment 1)
(1) getting 5 cubes of soybean oil, formic acid, the concentration of 200 kilograms is that 2 cubes, 70% hydrogen peroxide is preheated to 88 ℃ in tank; (2) use volume pump with 2.5m
3It is the pipeline reactor internal reaction 20 minutes of 25mm that the speed of/h will add simultaneously through soybean oil, formic acid and the hydrogen peroxide of preheating internal diameter, then charging again, successive reaction production.
(embodiment 2)
(1) getting 5 cubes of soybean oil, formic acid, the concentration of 200 kilograms is that 2 cubes, 70% hydrogen peroxide is preheated to 90 ℃ in tank; (2) use volume pump with 2.5m
3It is the pipeline reactor internal reaction 10 minutes of 25mm that the speed of/h will add simultaneously through soybean oil, formic acid and the hydrogen peroxide of preheating internal diameter, then charging again, successive reaction production.
(embodiment 3)
(1) getting 5 cubes of fatty acid methyl esters, formic acid, the concentration of 200 kilograms is that 2 cubes, 70% hydrogen peroxide is preheated to 92 ℃ in tank; (2) use volume pump with 2.5m
3It is the pipeline reactor internal reaction 15 minutes of 50mm that the speed of/h will add simultaneously through fatty acid methyl ester, formic acid and the hydrogen peroxide of preheating internal diameter, then charging again, successive reaction production.
(embodiment 4)
(1) getting 5 cubes of fatty acid methyl esters, formic acid, the concentration of 200 kilograms is that 2 cubes, 70% hydrogen peroxide is preheated to 92 ℃ in tank; (2) use volume pump with 2.5m
3It is the pipeline reactor internal reaction 15 minutes of 50mm that the speed of/h will add simultaneously through fatty acid methyl ester, formic acid and the hydrogen peroxide of preheating internal diameter, and the outer wall of pipeline reactor has water-cooling jacket, then charging again, successive reaction production.
This handicraft product compares with the Q/JAHG002 standard
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.