CN106182267A - A kind of low toxicity efficient wood preservation from decay agent - Google Patents
A kind of low toxicity efficient wood preservation from decay agent Download PDFInfo
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- CN106182267A CN106182267A CN201610768305.6A CN201610768305A CN106182267A CN 106182267 A CN106182267 A CN 106182267A CN 201610768305 A CN201610768305 A CN 201610768305A CN 106182267 A CN106182267 A CN 106182267A
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- low toxicity
- wood preservation
- decay agent
- pyrethrin
- efficient wood
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Abstract
The invention provides a kind of low toxicity efficient wood preservation from decay agent, be made up of following parts by weight component: Pyrethrum 5 10 parts, Prochloraz 15 parts, organic solvent 8 15 parts, cosolvent 36 parts, benzophenone 0.5 1.2 parts and 70 75 parts of water.Insect-proof agent provided by the present invention, the natural extract pyrethrin using purity higher is made effective ingredient, is had low toxicity, efficient feature, and can dissolve each other with arbitrary proportion with water, conveniently uses.
Description
Technical field
The invention belongs to insect-proof agent technical field, be specifically related to a kind of low toxicity efficient wood preservation from decay agent.
Background technology
Timber is widely used in the industry such as furniture, building, but yield and the reserves of timber are all declining day by day at present, reason
Essentially consist in: one, whole world tree and grass coverage reduction；Two, timber is owing to contacting with light, air and dampness for a long time, easily by entomogenous fungi moth erosion,
Cause it to rot.Therefore the insect protected work of timber is significant.
The petal of Pyrethrum is the raw material extracting natural pyrethrum, usually manufactures insecticide with the Pyrethrum extracted, and uses
The anti-smelting of insect in fields such as agricultural, health.This pure natural organic insecticide compared with the insecticide of various synthetic, it
Have efficiently, low toxicity, without systemic action, to people and homoiothermic animal low toxicity, cause each major industrial country of the world today Pyrethrum
Being classified as the important object of research, this is undivided with the advantageous feature of pyrethrin.
The extracting method of pyrethrin has multiple, such as Sharpe extraction method, supercritical ultrasonics technology, super critical extraction, microwave method etc..
Chinese patent 971104700 discloses a kind of Tech. for extracting pyrethrin, uses supercritical liquid extraction technique, by shooting flow
Body and Pyrethrum raw material add in extractor, extract 2-3 under the conditions of extracting pressure 110-180bar, extraction temperature 30-50 DEG C
Hour；The most again supercritical fluid and extract being imported separator, change pressure is 5-40 bar, temperature is 30-45 DEG C and enters
Row separates.The used extracting method of the present invention, extraction ratio is high, and extraction rate is fast, but total treating capacity is less, and due to titanium dioxide
Carbon its penetration when supercriticality is extremely strong, and the impurity such as waxiness in pyrethrum flowers, fatty acid, tannin acid is also dissolved and extracts
Out, pyrethrin purity is reduced.Chinese patent CN1657518A discloses one under the conditions of microwave radiation with organic molten
The method of agent extracting pyrethrin, has process route simple, and extraction time is short, and solvent load is few, solvent recovering rate is high and produces
The advantage that product extraction ratio is high, but the volatile waste of the solvent of microwave extracting, while crossing multiple dose microwave radiation can cause deinsectization
Centautin Partial digestion.
Summary of the invention
The invention provides a kind of low toxicity efficient wood preservation from decay agent, use pyrethrum extract to make effective parasite killing
Point, there is low toxicity, efficient feature, and stability is high, can be miscible with arbitrary proportion with water, it is simple to dilution uses.
The present invention solves the technical scheme that technical problem used:
A kind of low toxicity efficient wood preservation from decay agent, is made up of following parts by weight component: Pyrethrum 5-10 part, Prochloraz 1-5 part,
Organic solvent 8-15 part, cosolvent 3-6 part, benzophenone 0.5-1.2 part and water 70-75 part；Add a small amount of benzophenone, be for
Prevent the pyrethrin from decomposing under light illumination and ineffective, increase product stability.Use organic solvent and cosolvent
Common effect so that insect repellent composite for timber can dissolve each other under arbitrary proportion with water, convenient use.
The extracting method of described pyrethrin comprises the steps:
(1), after Pyrethrum petal being dried 20 ~ 30 minutes at 95 ~ 105 DEG C, pulverized 80 ~ 100 mesh sieves and obtained pulvis flores pyrethri
End；Pyrethrum petal baking temperature 95 ~ 105 DEG C is optimal, and drying temperature is too low, and required drying time is long, can cause Pyrethrum
Element partial oxidation；Drying temperature is too high, and drying time is long, then pyrethrin degraded can be caused to lose efficacy.
(2) pyrethrum flowers powder, cellulase and mixed solvent are placed in Soxhlet extractor, are heated to backflow, simultaneously
After using ultraviolet light to irradiate 40 ~ 60min, take extract after continuing backflow 4 ~ 6 hours stand-by；Described mixed solvent is ethyl acetate
And normal octane, the two mass ratio is 1:0.5 ~ 0.8.
Containing a large amount of polysaccharide in pyrethrum flowers powder, there was added of cellulase helps polysaccharide chain decomposition, cell wall rupture,
Contribute to Pyrethrum florigen discharge and dissolve in mixed solvent.It is molten in mixing that ultraviolet light irradiation can be effectively increased Pyrethrum florigen
Dissolution velocity in agent and dissolution rate, improve extraction ratio.
The selection of solvent needs to have pyrethrin stronger solvability, and dielectric constant is less simultaneously, can fully send out
Wave the promotion dissolution of ultraviolet light.
(3) extract distillation being collected 75 ~ 80 DEG C and 122 ~ 130 DEG C of fractions respectively, excess is required pyrethrin.
Fraction collects beneficially solvent recovery respectively, and recovered solvent can be used for secondary and uses, and reduces discharging of waste liquid, reduces and produces into
This.
As preferably, described organic solvent is ethanol, propanol, isopropanol or petroleum ether.
As preferably, described cosolvent is Polyethylene Glycol, polyoxyethylene sorbitan monooleate dehydration or Sorbitan
Alcohol fatty acid ester.
As preferably, the mean molecule quantity of described Polyethylene Glycol is 400-600.
As preferably, described in step (2), pyrethrum flowers powder water content is 5 ~ 7%, and water is the thing that dielectric constant is bigger
Matter, can effectively absorb ultraviolet luminous energy and be converted into heat energy, and pyrethrin is to thermo-responsive, exceedes uniform temperature and just decomposes, therefore
Ultraviolet light assist pyrethrin extracting time, the moisture content of Flos Chrysanthemi is preferably controlled in 5 ~ 7% and is advisable, if moisture content high 7% time, then mix molten
The ability of extraction Pyrethrum is decreased by agent.And because moisture content is many, temperature rises fast, exceedes critical decomposition temperature, also makes to remove
Worm centautin extraction ratio reduces.
As preferably, described in step (2), the mass ratio of pyrethrum flowers powder, cellulase and mixed solvent is 1:0.05
~ 0.08:10 ~ 15.
As preferably, described in step (2), the mass ratio of ethyl acetate and normal octane is 1:0.7.
The invention have the benefit that
1, insect-proof agent provided by the present invention, the natural extract pyrethrin using purity higher is made effective ingredient, is had low
Feature malicious, efficient, and can dissolve each other with arbitrary proportion with water, convenient use.
2, the present invention uses ultraviolet light to assist extraction to extract pyrethrin, has efficiently, equipment is conventional, easy and simple to handle, produce
The advantage that product purity is high and extraction ratio is high, is suitable for large-scale production.
3, use cellulase to accelerate cell wall rupture so that pyrethrin quickly discharges dissolving, accelerate extraction efficiency.
Detailed description of the invention
In order to make technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is entered
One step describes in detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit this
Bright.
Embodiment 1
(1), after 1000g Pyrethrum petal being dried 30 minutes at 100 DEG C, pulverized 80 mesh sieves and obtained 650g pulvis flores pyrethri
End；
(2) 500g pyrethrum flowers powder, 25g cellulase, 2940g ethyl acetate and 2060g normal octane are placed in soxhlet type
In device, it is heated to backflow, after using ultraviolet light to irradiate 50min, takes extract after continuing backflow 5 hours stand-by simultaneously；
(3) extract distillation being collected 2510g 75 ~ 80 DEG C of fractions respectively is ethyl acetate, and 122 ~ 130 DEG C of fractions of 1980g are
Normal octane, excess is pyrethrin, and weight is 19.25g.
(4) by 8g pyrethrin, 3g Prochloraz, 10g ethanol, 4g PEG400,1g benzophenone and 74g water in instead
Mix homogeneously in still is answered i.e. to obtain required wood preservation from decay agent.
Embodiment 2
(1), after 1000g Pyrethrum petal being dried 25 minutes at 105 DEG C, pulverized 90 mesh sieves and obtained 625g pulvis flores pyrethri
End；
(2) 500g pyrethrum flowers powder, 35g cellulase, 4000g ethyl acetate and 2000g normal octane are placed in soxhlet type
In device, it is heated to backflow, after using ultraviolet light to irradiate 40min, takes extract after continuing backflow 6 hours stand-by simultaneously；
(3) extract distillation being collected 3600g 75 ~ 80 DEG C of fractions respectively is ethyl acetate, and 122 ~ 130 DEG C of fractions of 1860g are
Normal octane, excess is pyrethrin, and weight is 20.1g.
(4) by 5g pyrethrin, 5g Prochloraz, 15g propanol, 3g sorbitan fatty ester, 1.2g benzophenone
Required wood preservation from decay agent is i.e. obtained with 70.8g water mix homogeneously in reactor.
Embodiment 3
(1), after 1000g Pyrethrum petal being dried 20 minutes at 110 DEG C, pulverized 100 mesh sieves and obtained 610g pulvis flores pyrethri
End；
(2) 500g pyrethrum flowers powder, 40g cellulase, 4165g ethyl acetate and 3335g normal octane are placed in soxhlet type
In device, it is heated to backflow, after using ultraviolet light to irradiate 60min, takes extract after continuing backflow 4 hours stand-by simultaneously；
(3) extract distillation being collected 4000g 75 ~ 80 DEG C of fractions respectively is ethyl acetate, and 122 ~ 130 DEG C of fractions of 3205g are
Normal octane, excess is pyrethrin, and weight is 19.8g.
(4) by 10g pyrethrin, 1g Prochloraz, 8g isopropanol, 6g polyoxyethylene sorbitan monooleate dehydration, 0.5g
Benzophenone and 74.5g water mix homogeneously in reactor i.e. obtains required wood preservation from decay agent.
Embodiment described above is the one preferably scheme of the present invention, not makees the present invention any pro forma
Limit, on the premise of without departing from the technical scheme described in claim, also have other variant and remodeling.
Claims (7)
1. a low toxicity efficient wood preservation from decay agent, it is characterised in that described safety non-toxic wood preservation from decay agent is by following weight portion
Array is grouped into: pyrethrin 5-10 part, Prochloraz 1-5 part, organic solvent 8-15 part, cosolvent 3-6 part, benzophenone 0.5-
1.2 parts and water 70-75 part；
The extracting method of described pyrethrin comprises the steps:
(1), after Pyrethrum petal being dried 20 ~ 30 minutes at 100 ~ 110 DEG C, pulverized 80 ~ 100 mesh sieves and obtained pulvis flores pyrethri
End；
(2) pyrethrum flowers powder, cellulase and mixed solvent are placed in Soxhlet extractor, are heated to backflow, use simultaneously
After ultraviolet light irradiates 40 ~ 60min, take extract after continuing backflow 4 ~ 6 hours stand-by；Described mixed solvent is ethyl acetate and just
Octane, the two mass ratio is 1:0.5 ~ 0.8；
(3) extract distillation being collected 75 ~ 80 DEG C and 122 ~ 130 DEG C of fractions respectively, excess is required pyrethrin.
2. as claimed in claim 1 low toxicity efficient wood preservation from decay agent, it is characterised in that described organic solvent be ethanol, propanol,
Isopropanol or petroleum ether.
3. low toxicity efficient wood preservation from decay agent as claimed in claim 1, it is characterised in that described cosolvent is Polyethylene Glycol, gathers
Oxygen ethylene Arlacel-80 or sorbitan fatty ester.
4. low toxicity efficient wood preservation from decay agent as claimed in claim 1, it is characterised in that the mean molecule quantity of described Polyethylene Glycol
For 400-600.
5. low toxicity efficient wood preservation from decay agent as claimed in claim 1, it is characterised in that pulvis flores pyrethri described in step (2)
End water content is 5 ~ 7%.
6. low toxicity efficient wood preservation from decay agent as claimed in claim 1, it is characterised in that pulvis flores pyrethri described in step (2)
The mass ratio of end, cellulase and mixed solvent is 1:0.05 ~ 0.08:10 ~ 15.
7. as claimed in claim 1 low toxicity efficient wood preservation from decay agent, it is characterised in that ethyl acetate described in step (2) and
The mass ratio of normal octane is 1:0.7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610768305.6A CN106182267A (en) | 2016-08-31 | 2016-08-31 | A kind of low toxicity efficient wood preservation from decay agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610768305.6A CN106182267A (en) | 2016-08-31 | 2016-08-31 | A kind of low toxicity efficient wood preservation from decay agent |
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| CN106182267A true CN106182267A (en) | 2016-12-07 |
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| CN201610768305.6A Pending CN106182267A (en) | 2016-08-31 | 2016-08-31 | A kind of low toxicity efficient wood preservation from decay agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932653A (en) * | 2017-12-28 | 2018-04-20 | 东莞市名启木制品有限公司 | A kind of mothproof composite wood plate and manufacturing process |
| CN108115790A (en) * | 2017-11-20 | 2018-06-05 | 湖州南浔丽青木业有限公司 | A kind of preparation method of wood preservation from decay agent |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657518A (en) * | 2004-02-17 | 2005-08-24 | 金基明 | Extraction method of pyrethrin |
| CN101743808A (en) * | 2009-12-23 | 2010-06-23 | 红河森菊生物有限责任公司 | Method for timely collecting, processing and applying pyrethrum leaves |
| CN104068066A (en) * | 2014-06-20 | 2014-10-01 | 裴秀琴 | Compound bactericide |
| CN104210001A (en) * | 2014-07-24 | 2014-12-17 | 株洲市长缨有害生物防治有限责任公司 | Insect and mould inhibitor and application thereof |
| KR20150126575A (en) * | 2015-10-23 | 2015-11-12 | ㈜엠알이노베이션 | Pesticides using the Insect flower powder or sludge and manufacture method thereof |
-
2016
- 2016-08-31 CN CN201610768305.6A patent/CN106182267A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657518A (en) * | 2004-02-17 | 2005-08-24 | 金基明 | Extraction method of pyrethrin |
| CN101743808A (en) * | 2009-12-23 | 2010-06-23 | 红河森菊生物有限责任公司 | Method for timely collecting, processing and applying pyrethrum leaves |
| CN104068066A (en) * | 2014-06-20 | 2014-10-01 | 裴秀琴 | Compound bactericide |
| CN104210001A (en) * | 2014-07-24 | 2014-12-17 | 株洲市长缨有害生物防治有限责任公司 | Insect and mould inhibitor and application thereof |
| KR20150126575A (en) * | 2015-10-23 | 2015-11-12 | ㈜엠알이노베이션 | Pesticides using the Insect flower powder or sludge and manufacture method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈寿宏: "微波协助萃取技术应用于提取天然除虫菊素的工艺研究", 《农药科学与管理》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115790A (en) * | 2017-11-20 | 2018-06-05 | 湖州南浔丽青木业有限公司 | A kind of preparation method of wood preservation from decay agent |
| CN107932653A (en) * | 2017-12-28 | 2018-04-20 | 东莞市名启木制品有限公司 | A kind of mothproof composite wood plate and manufacturing process |
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