CN101171933A - Method for synthesizing natural substance modified fungistat - Google Patents
Method for synthesizing natural substance modified fungistat Download PDFInfo
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- CN101171933A CN101171933A CNA2007101337281A CN200710133728A CN101171933A CN 101171933 A CN101171933 A CN 101171933A CN A2007101337281 A CNA2007101337281 A CN A2007101337281A CN 200710133728 A CN200710133728 A CN 200710133728A CN 101171933 A CN101171933 A CN 101171933A
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- bacteriostatic agent
- epoxidation reaction
- organic group
- natural substance
- substance modified
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Abstract
The invention discloses a synthetic method of bacteriostatic agent modified from natural materials. Epoxidation reaction is performed to pine tree resin and epoxide firstly, and electropositive ion reaction is performed to the epoxidation reaction product and the organic group containing the lone paired electrons, to obtain bacteriostatic agent modified from the natural materials. The lowest bacteriostasis density of the bacteriostatic agent of the invention can reach 3ppm, the using density is usually 5 to 10ppm, which is far lower than the prior bacteriostatic agent performing sterilization and alga removal through cooling circulation water.
Description
Technical field
The present invention is specifically related to the synthetic method of the water treatment sterilizing and algae-removing agent of the cold water process of power plant, petrochemical industry, metal smelt central air conditioner system and a kind of natural extract modification in the oil field reinjection water processing procedure.
Background technology
Along with industry constantly develops, petrochemical industry and power plant also increase sharply, and the treating capacity of its cooling circulating water and oil field reinjection water increases severely, and the requirement of the sterilizing and algae-removing medicament in the water treatment procedure is also being improved.
The sterilizing and algae-removing agent of using in cooling circulating water and the oil field reinjection water is divided into mostly at present inorganic type and organic type two classes.As number the described mineral-type of ISBN7-5025-2695-1/X Water Treatment Chemicals handbook halogen bactericide such as liquid chlorine, chlorine dioxide are arranged.There is certain safety problem in these sterilizing and algae-removing agent in transportation, storage and use, and these materials pipeline to cooling system in water body causes corrosion.And the agent of organic class sterilizing and algae-removing as 1227, isothiazolinone etc., these materials have stronger excitant, make operating personnel produce discomfort, and be not easy to decompose, can cause the pollution of environment during discharging, these material toxicity are bigger, and 1227 LD value as 45% only has 900mg/kg, and 1.5% isothiazolinone, its LD value has only 300mg/kg.As patent of invention CN1146281 quaternary ammonium salt bactericide and preparation method thereof, its usage amount is up to 40ppm, and therefore researching and developing new and effective low toxicity water treatment sterilizing and algae-removing agent meeting brings great environmental benefit and economic benefit.
Summary of the invention
The objective of the invention is existing natural extract is carried out chemical modification, thereby obtain the method that a kind of minimum inhibitory concentration is the water treatment sterilizing and algae-removing agent of 3ppm.
Purpose of the present invention can reach by following measure:
A kind of natural substance modified bacteriostatic agent synthetic method comprises the steps:
A, pine tree resin and epoxides are carried out epoxidation reaction, wherein pine tree resin and epoxides are 1: 0.5～1.5 in molar ratio, and reaction temperature is 40～80 ℃, and preferred 60～70 ℃, the reaction time is 1～8h.
B, epoxidation reaction product and the organic group that contains lone pair electrons are carried out the cationization reaction, obtain natural substance modified bacteriostatic agent, wherein the epoxidation reaction product is 1: 0.5～2.5 with the organic group that contains lone pair electrons in molar ratio, reaction temperature is 80～120 ℃, preferred 90～100 ℃, the reaction time is 2～10h.
Epoxides of the present invention can be epoxychloropropane, epoxy chlorobutane etc.The organic group that contains lone pair electrons can be for containing the nitrogen-containing compound of lone pair electrons, as trimethylamine, triethylamine, pyridine etc.
The mixture of pine tree resin of the present invention for extracting from trees, its main component is the resin acid of alkyl hydrogenation phenanthrene.Contain Compound I A or IB in the bacteriostatic agent that obtains after process method modification of the present invention is handled,
The wherein R ' among the IA, R " and R , the R1 among the IB is the C-organic group, its concrete group is by the concrete material decision of concrete material in the raw material pine tree resin or modification of the present invention.
The water treatment sterilizing and algae-removing agent of the resulting natural extract modification of the present invention can suppress the activity of the mitochondrial respiratory chain of iron bacteria in the water body, sulphur bacteria and algae, find through bacteriostatic experiment, its minimum inhibitory concentration can reach 3ppm, the half lethal dose LD value of big rat belongs to nontoxic level material greater than 8000mg/kg.Its working concentration is generally 5～10ppm, well below 1227 and the isothiazolinone of selling in the market.
Embodiment
Embodiment 1
Is between 60～70 degree with pine tree resin (chemical plant, Wuzhou, Guangxi) and epoxychloropropane in temperature, reaction in 1: 1 in molar ratio, the product and the trimethylamine that react after 4 hours reacted 4 hours between temperature 90～100 degree according to 1: 1.2 ratio of mol ratio, made to have the bacteriostatic agent that can be used in the cooling circulating water sterilizing and algae-removing.
Embodiment 2
Is between 60～70 degree with pine tree resin (chemical plant, Wuzhou, Guangxi) and epoxychloropropane in temperature, reaction in 1: 1 in molar ratio, the product and the pyridine that react after 4 hours synthesized 5 hours between temperature 90～100 degree according to 1: 1 ratio of mol ratio, made to have the bacteriostatic agent that can be used in the cooling circulating water sterilizing and algae-removing.
Claims (5)
1. a natural substance modified bacteriostatic agent synthetic method comprises the steps:
A, pine tree resin and epoxides are carried out epoxidation reaction,
B, epoxidation reaction product and the organic group that contains lone pair electrons are carried out the cationization reaction, obtain natural substance modified bacteriostatic agent.
2. method according to claim 1, the ratio that it is characterized in that pine tree resin and epoxides 1: 0.5 in molar ratio～1.5 is at 40～80 ℃ of following epoxidation reaction 1～8h.
3. method according to claim 1 is characterized in that epoxidation reaction product and the ratio of organic group 1: 0.5 in molar ratio～2.5 that contains lone pair electrons are at 80～120 ℃ of Xiayang ion reaction 2～10h.
4. method according to claim 1 and 2 is characterized in that described epoxides is epoxychloropropane or epoxy chlorobutane.
5. method according to claim 1 and 2 is characterized in that the described organic group that contains lone pair electrons is trimethylamine, triethylamine or pyridine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101337281A CN101171933A (en) | 2007-10-22 | 2007-10-22 | Method for synthesizing natural substance modified fungistat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101337281A CN101171933A (en) | 2007-10-22 | 2007-10-22 | Method for synthesizing natural substance modified fungistat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101171933A true CN101171933A (en) | 2008-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101337281A Pending CN101171933A (en) | 2007-10-22 | 2007-10-22 | Method for synthesizing natural substance modified fungistat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101171933A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898104A (en) * | 2010-07-12 | 2010-12-01 | 江南大学 | Method for cationization of surface of microcapsule with urea resin as capsule wall |
| CN103250740A (en) * | 2013-06-04 | 2013-08-21 | 常州和方环保科技有限公司 | Mildew inhibitor, and preparation method and application method thereof |
-
2007
- 2007-10-22 CN CNA2007101337281A patent/CN101171933A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898104A (en) * | 2010-07-12 | 2010-12-01 | 江南大学 | Method for cationization of surface of microcapsule with urea resin as capsule wall |
| CN101898104B (en) * | 2010-07-12 | 2012-05-23 | 江南大学 | Method for cationization of surface of microcapsule with urea resin as capsule wall |
| CN103250740A (en) * | 2013-06-04 | 2013-08-21 | 常州和方环保科技有限公司 | Mildew inhibitor, and preparation method and application method thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20080507 |