CN1432279A - Delayed release biocide - Google Patents
Delayed release biocide Download PDFInfo
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- CN1432279A CN1432279A CN 02100331 CN02100331A CN1432279A CN 1432279 A CN1432279 A CN 1432279A CN 02100331 CN02100331 CN 02100331 CN 02100331 A CN02100331 A CN 02100331A CN 1432279 A CN1432279 A CN 1432279A
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- glycolylurea
- delayed release
- biocide
- bromine
- chlorine
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Abstract
The slow release bromide biocide for disinfection of industrial water and public places consists of bromochloro dimethyl hydantoin as main component 50-80 wt%, other halogenated hydantoin as supplementary material 15-35 wt% and active adhesive 5-15 wt%, and is prepared into tablet or granule with controlled dissolving rate and thus delayed release function. It has the germicidal advantage of bromide biocide maintained and prolonged biocidal effect. Its slow release function is realized through both stepped reaction to release active components slowly and properly selected adhesive to control dissolving rate.
Description
Technical field
The present invention relates to the sterilization processing in industry water field and the sterilization field of public place, (also being suitable for such as swimming pool, toilet, hotel etc.) specifically, is a kind of slowly-releasing bromine class biocide of oxidized form.
Background technology
Based on the biocide of bromine,, adopted by industrial water system gradually because of characteristics such as its consumption are low, effective, environmentally friendly.Early stage, there was the potential safety hazard on using in the product bromine chloride, because then can cause potential safety and harm just in case the leakage of gaseous oxidizer has taken place; There is the bad control of proportioning again in the bromine chloroformate mixture, influence problems such as bactericidal effect, has restricted their development in application.
Summary of the invention
The object of the present invention is to provide:
1 handling safety, convenience, effect stability.The present invention is with the tablet of solid or particle form, impacts or adds continuously, has avoided the destabilizing factor of medicament on safety and effect in the past;
2 reduce the water treatment expense.Slow release effect can give full play of the usefulness of medicament itself, low dosage, and long-acting bactericidal reduces common biocide and adds excessive waste;
A kind of delayed release biocide
The present invention is achieved in that
The present invention is a host with bromine Chlorodimethyl glycolylurea, the hydantoin halides that is equipped with other is done assistant agent, add reactive adhesive again, bromine Chlorodimethyl glycolylurea: assistant agent: reactive adhesive=50～80: 15～35: 5～15 by the control dissolution velocity, makes delayed release biocide with the form of tablet or particle.
Host bromine Chlorodimethyl glycolylurea synthetic is with 5,5-dimethyl hydantion and liquid bromine, liquid chlorine successively alkali lye as disacidify agent effect under, carry out two sections halogenations of N1, N3-and generate through low temperature, reaction equation is as follows:
Assistant agent can be hydantoin halides, chlorine class biocide, i.e. Babysafe, chlorine class glycolylurea.
Reactive adhesive can be the first and second basic glycolylurea classes, simple binder one or more.
Effect of the present invention
1. medicament of the present invention is that the solid form with tablet or particle adds, and no matter is to impact to add or add continuously, and more than bromine chloride or other pressed powder safety, convenience, effect is also stablized in the operation.
Since medicament of the present invention solvability 0.2% in water, but, the good sterilization effect is just arranged at low concentration 5ppm, cooperate suitable doser with tablet form, add better effects if continuously.The static sterilization of laboratory evaluation bactericidal effect 20ppm kept sterilizing rate more than 90% in 72 hours.Bactericidal effect and slow release effect such as table 1, table 2.
The sterilizing rate of table 1 different strain
| Bacterial classification | Sterilizing rate % | Initial bacterium several/ml | |
| Invention medicament 20mg/L | Babysafe 50mg/L | ||
| Heterotroph | ????99.7 | ????99.3 | ????4.6×10 7 |
| Iron bacteria | ????98.9 | ????95.2 | ????5.3×10 5 |
| Sulfate reducing bacteria | ????100 | ????95.1 | ????7.8×10 4 |
Table 2 long-acting bactericidal action time
| The medicament title | 5.4 * 107/ml of the original bacterium of sterilizing rate % |
| ?1h?????4h??????8h??????12h?????24h?????48h????72h | |
| Invention medicament 20mg/L Babysafe 50mg/L | ?99.2???99.2????99.6????98.9????98.6????97.8???92.4 ?99.3???99.6????99.5????96.7????67.5????-??????- |
The present invention, has overcome the shortcoming of product in earlier stage, handling safety, convenience at the advantage while that keeps the bromine bactericide.Particularly increased the function of slowly-releasing, it is low to make sterilization add dose, but the bactericidal action longer duration, can give full play to the sterilizing function of biocide in application process.Principle is the hydrolysis in water of bromine chlorine class glycolylurea, discharges bromine and chlorine with hypobromous acid and hypochlorous form.Discharge the almost very fast generation of reaction of bromine, and the reaction of release chlorine is very slow, the reaction of bromide ion and hypochlorous acid or hypochlorite also takes place generate active very high hypobromous acid in water.Hypobromous acid is the crucial active component of killing microorganisms.Realize that slow-release function one is to utilize its stepwise reaction slowly to discharge active component, the 2nd, select suitable binder, the control dissolution velocity.Concrete enforcement
Bromine Chlorodimethyl glycolylurea: auxiliary material (chlorine class biocide such as Babysafe, chlorine class glycolylurea etc.): reactive adhesive (the first and second basic glycolylurea classes, simple binder one or more etc.)=50～80: 15～35: 5～15.
Host bromine Chlorodimethyl glycolylurea synthetic is with 5,5-dimethyl hydantion and liquid bromine, liquid chlorine successively alkali lye as disacidify agent effect under, carry out two sections halogenations of N1, N3-and generate through low temperature.Because the solvability of target product in water is very little, more complete for what reaction was carried out, select phase transfer catalyst, can improve the yield of product on the one hand, brought convenience also on the other hand the control temperature.
Reaction equation is as follows:
Production process is an intermittent operation, (intermediate products dichloro-dimethyl glycolylurea or dibromo dimethyl hydantoin also can become product separately or as auxiliary material) is with a certain amount of 5,5-dimethyl hydantion, phase transfer catalyst and water add in the synthesis reactor, stir, under nearly freezing point temperature, successively react with simple substance and simple substance chlorine, strict control temperature and charging rate are finished until reaction.Filter then, the washing reaction product, with filter cake fragmentation, the oven dry after the washing, weigh, add some auxiliary materials and reactive adhesive again, or make particle or break into tablet, product.
Seven embodiment
Embodiment one
With bromine Chlorodimethyl glycolylurea: clorox: the proportioning of dichloromethane ethylhydantoin=65: 20: 15, tablet is made in drying, granulation, is applied in the disinfection system before water in the oil refining water field is back to use the cycle water field.The reusing sewage amount 20m of this system
3/ h, heterotroph is 10 before the sterilization
4～10
5Between, seriously exceeded the index 10 of supplementing water
2Individual/ml, dosing takes on-line continuous to add, and the control chlorine residue is at 0.2～0.3mg/L, and the heterotroph index reaches 10
2Individual/below the ml.Satisfied the requirement of circulation.
Embodiment two
With bromine Chlorodimethyl glycolylurea: the dichloro-dimethyl glycolylurea: the proportioning of dichloromethane ethylhydantoin=75: 10: 15 is mixed the back drying-granulating through solid blender, the formation product.The catalysis water field of one oil plant, because system leak is frequent, the water quality vicious circle, once cooperated 1227 alternately to add the control bacterium with Babysafe, liquid chlorine, bacterium index qualification rate only was about 50% in every month, added 2 hours liquid chlorines sometimes, and the cycle water residual chlorine reaction has only 0.1mg/L.After use chlorine dioxide again instead and do oxidative bactericide, effect also loses and is clearly better.Again because system possesses the very big 5000m of the water yield
3, can not do the sterilization of system continually and peel off a large amount of conversion in back water body, made one month experiment of the granule of medicament of the present invention.Add 10ppm later every day with 20ppm impact adding in first day, the heterotroph basic controlling is 10
5In individual/ml, bacterium index qualification rate reaches more than 85%.Embodiment three
With bromine Chlorodimethyl glycolylurea: the dichloro-dimethyl glycolylurea: the proportioning of ethyl cellulose=80: 13: 7 is through the solid blender mixed material, and the drying granulation breaks into tablet again, forms product.
Claims (4)
1. delayed release biocide, it is characterized in that: with bromine Chlorodimethyl glycolylurea is host, the hydantoin halides that is equipped with other is done assistant agent, add reactive adhesive again, bromine Chlorodimethyl glycolylurea: assistant agent: reactive adhesive=50～80: 15～35: 5～15 by the control dissolution velocity, makes delayed release biocide with the form of tablet or particle.
2. a kind of delayed release biocide according to claim 1, it is characterized in that: host bromine Chlorodimethyl glycolylurea synthetic, be with 5,5-dimethyl hydantion and liquid bromine, liquid chlorine successively alkali lye as disacidify agent effect under, carry out two sections halogenations of N1, N3-and generate through low temperature, reaction equation is as follows:
3. a kind of delayed release biocide according to claim 1 is characterized in that: assistant agent can be hydantoin halides, chlorine class biocide, i.e. Babysafe, chlorine class glycolylurea.
4. a kind of delayed release biocide according to claim 1 is characterized in that: reactive adhesive can be the first and second basic glycolylurea classes, simple binder one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02100331 CN1432279A (en) | 2002-01-11 | 2002-01-11 | Delayed release biocide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02100331 CN1432279A (en) | 2002-01-11 | 2002-01-11 | Delayed release biocide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1432279A true CN1432279A (en) | 2003-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02100331 Pending CN1432279A (en) | 2002-01-11 | 2002-01-11 | Delayed release biocide |
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| CN (1) | CN1432279A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7767240B2 (en) | 2001-06-28 | 2010-08-03 | Albemarle Corporation | Microbiological control in poultry processing |
| US7901276B2 (en) | 2003-06-24 | 2011-03-08 | Albemarle Corporation | Microbiocidal control in the processing of meat-producing four-legged animals |
| US7914365B2 (en) | 2005-12-01 | 2011-03-29 | Albemarle Corporation | Microbiocidal control in the processing of meat-producing four-legged animals |
| US7999118B2 (en) | 2000-01-18 | 2011-08-16 | Albemarle Corporation | Process for producing N-halogenated hydantoins |
| CN102246751A (en) * | 2011-05-18 | 2011-11-23 | 上海未来企业有限公司 | Sterilizing synergistic agent for oxidizing biocide |
-
2002
- 2002-01-11 CN CN 02100331 patent/CN1432279A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7999118B2 (en) | 2000-01-18 | 2011-08-16 | Albemarle Corporation | Process for producing N-halogenated hydantoins |
| US8586763B2 (en) | 2000-01-18 | 2013-11-19 | Albemarle Corporation | Process for producing N-halogenated hydantoins |
| US9029562B2 (en) | 2000-01-18 | 2015-05-12 | Albemarle Corporation | Process for producing N-halogenated hydantoins |
| US7767240B2 (en) | 2001-06-28 | 2010-08-03 | Albemarle Corporation | Microbiological control in poultry processing |
| US7901276B2 (en) | 2003-06-24 | 2011-03-08 | Albemarle Corporation | Microbiocidal control in the processing of meat-producing four-legged animals |
| US7914365B2 (en) | 2005-12-01 | 2011-03-29 | Albemarle Corporation | Microbiocidal control in the processing of meat-producing four-legged animals |
| CN102246751A (en) * | 2011-05-18 | 2011-11-23 | 上海未来企业有限公司 | Sterilizing synergistic agent for oxidizing biocide |
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